delivered the opinion of the court:
Plaintiffs, Mary Claire Collins, co-guardian of the estates of Joseph Collins Lieberman and Megan Collins Lieberman, minors, and Megan Collins Lieberman appeal the trial court’s order striking plaintiffs’ amended objection to the third and final account filed by co-guardian defendant Northern Trust Company. In the objection, plaintiffs alleged that defendant failed to properly and prudently invest millions of the wards’ dollars under the prudent-investor rule. The cases of the two estates were consolidated on appeal. We reverse and remand for further proceedings.
In 2000 Joseph and Megan (wards) were involved in a car accident; their father was killed and the wards suffered severe and permanent injuries. Megan received $13,175,477.26 and Joseph received $2,527,504.06 from the party that caused the accident. In addition, Joseph will receive monthly payments of $2,000 beginning at age 18 and payments of $10,000 per month beginning at age 25. In total, Joseph will receive a guaranteed annuity payment totaling $6,898,193.
Defendant was appointed to serve as co-guardian of the wards’ estates. On November 1, 2002, defendant received the majority of the wards’ assets, a total of $15,702,981.32 ($13,175,477.26 of Megan’s estate and $2,527,504.06 of Joseph’s estate). Over the next year, defendant placed approximately half of the assets in a taxable short-term investment fund that generated a 1% return after taxes and guardian fees.
On January 9, 2004, defendant and Mary Claire Collins filed their “Current and First Accounts” (first account) regarding Megan’s and Joseph’s accounts for approval by the probate court. The first account reported that as of October 31, 2003, one year after defendant received the assets, over half of Joseph’s assets remained underinvested as cash in defendant’s short-term investment account. The first account reported that slightly less than half of Megan’s assets remained underinvested as cash in defendant’s short-term investment account as of October 31, 2003. Defendant redistributed the funds on its own accord after the first accounting.
The next year, on February 10, 2005, defendant and Mary Claire Collins filed their “Current and Second Accounts” (second account) for approval by the probate court. The court approved both the first and second accounts filed by defendant and Mary Claire Collins.
On August 25, 2005, defendant filed a “Petition For Approval Of The Northern Trust Company’s Third And Final Account, Declaratory Relief, Leave to Resign As Co-Guardian, And Appointment of Successor Co-Guardian” (petition). In the petition, defendant sought a declaration that its “allocation, management, and investment of the Estate’s assets was prudent, reasonable, and in accordance with Illinois law.”
On August 17, 2006, plaintiffs, including Megan who was no longer a ward, filed an objection to the third and final account and prior current accounts. The objection alleged that defendant was accountable for 12 months during which it had “mismanaged” the wards’ estates by leaving the assets in a short-term investment fund that yielded a return of about 1% after taxes and guardian fees. The objection challenged the propriety of defendant’s management and requested the trial court to surcharge or otherwise enter judgment against defendant for the losses resulting from its excessive investment in a short-term fund as opposed to longer-term investments during the period of November 30, 2002, through December 31, 2003. Specifically, the objection alleged: (1) defendant was a corporate fiduciary that holds itself out as having particular experience and expertise with the investment and management of funds for guardianship estates; (2) defendant was the co-guardian of the wards’ estates and was entrusted with the responsibility to invest the wards’ assets; (3) defendant, in breach of that duty, inexplicably invested substantial portions of the wards’ assets in a short-term investment fund that generated a return of about 1% after taxes and guardian fees between November 30, 2002, and December 31, 2003; (4) defendant had no excuse and no explanation for holding the wards’ assets in such short-term investments, because it had sufficient income and other assets to address their needs; and (5) if the funds had been invested in any long-term investment, the funds would have achieved a substantially greater rate of return over the same period.
Defendant filed a motion to strike plaintiffs’ objection pursuant to section 2 — 615 of the Code of Civil Procedure (Code) (735 ILCS 5/2— 615 (West 2006)), claiming that the allegations directed against it were insufficient as a matter of law because they failed to state a valid claim upon which relief could be granted. The trial court granted defendant’s motion without prejudice.
Plaintiffs filed a second objection that contained the same allegations as the original objection, with this additional language:
“For example: if The Northern had invested these funds in the same fixed income investments in which it had invested portions of [the wards’] other assets, such an investment would have generated a return of over 3% a full 2% higher than Northern’s short term investments. By way of a further example, if The Northern had invested these funds in a simple Dow Jones Industrial Average Mutual Fund, such an investment would have increased in value by almost 18% over the same period.”
Defendant moved to strike the amended objection pursuant to section 2 — 615 of the Code, claiming that the language of the amended objection did nothing more than add percentages to plaintiffs’ allegations that the return on the wards’ assets should have been greater.
The trial court first acknowledged that “a guardian is required to observe that care and diligence in the performance of his duties that a good and conscientious business man exercises in his own affairs, under like circumstances.” The trial court then stated that “[t]he standard is essentially the same as the prudent person standard rule.” However, the trial court then went on to apply a standard of “bad faith, fraud or acts or omissions constituting gross neglect of the estate that are so unreasonable they cannot be characterized as mere errors in judgment.” The trial court found that the objection did not allege that defendant’s decisions were the result of bad faith, fraud, or gross neglect, and it granted defendant’s motion to strike plaintiffs’ objection.
This timely appeal followed.
STANDARD OF REVIEW
Pursuant to section 2 — 615(a) of the Code, a defendant may file a motion to strike a pleading because it is “substantially insufficient in law.” 735 ILCS 5/2 — 615(a) (West 2006). A section 2 — 615 motion to dismiss “challenges the legal sufficiency of a complaint based on defects apparent on its face.” Marshall v. Burger King Corp., 222 Ill. 2d 422, 429 (2006). “In reviewing the sufficiency of a complaint, we accept as true all well-pleaded facts and all reasonable inferences that may be drawn from those facts.” Marshall, 222 Ill. 2d at 429. In reviewing the sufficiency of a complaint, courts construe the allegations in the complaint in the light most favorable to the plaintiff. Marshall, 222 Ill. 2d at 429. Therefore, pursuant to section 2 — 615, a court should not dismiss a cause of action unless it is clearly apparent that no set of facts can be proved that would entitle the plaintiff to recovery. Marshall, 222 Ill. 2d at 429. An order granting or denying a section 2 — 615 motion to dismiss is reviewed de novo. Marshall, 222 111. 2d at 429.
ANALYSIS
On appeal, plaintiffs argue that the trial court erred by applying an incorrect standard to evaluate the amended objection. Plaintiffs contend that the trial court incorrectly applied a gross-negligence standard requiring plaintiffs to allege that defendant’s decisions were the result of bad faith, fraud, or something more than mere errors in judgment. Plaintiffs also contend that the prudent-investor standard should apply rather than the prudent-person standard alluded to.
Because we are reviewing the meaning of a statute, our review is de novo. See Alvarez v. Pappas, 229 Ill. 2d 217, 220 (2008). When interpreting a statute, our primary objective is to ascertain and give effect to the intent of the legislature. Harrisonville Telephone Co. v. Illinois Commerce Comm’n, 212 Ill. 2d 237, 251 (2004). The most reliable indicator of such intent is the language of the statute, which is to be given its plain and ordinary meaning. Alvarez, 229 Ill. 2d at 228. We must not consider words and phrases in isolation; rather, we must interpret words and phrases in light of other relevant provisions and interpret the statute as a whole. See Williams v. Staples, 208 Ill. 2d 480, 487 (2004).
Section 11 — 13(b) of the Probate Act of 1975 (Probate Act) provides:
“(b) The guardian or other representative of the ward’s estate shall have the care, management and investment of the estate, shall manage the estate frugally and shall apply the income and principal of the estate so far as necessary for the comfort and suitable support and education of the ward ***.” 755 ILCS 5/11 — 13(b) (West 2002).
Section 21 — 2 of the Probate Act provides:
“(a) It is the duty of the representative to invest the ward’s money. A representative is chargeable with interest at a rate equal to the rate on 90-day United States Treasury Bills upon any money that the representative wrongfully or negligently allows to remain uninvested after it might have been invested. Reasonable sums of money retained uninvested by the representative in order to pay for the current or imminent expenses of the ward shall not be considered wrongfully or negligently uninvested.
(c) A representative may invest only in the types of property specified in Sections 21 — 2.01 through 21 — 2.15.” (Emphases added.) 755 ILCS 5/21 — 2(a), (c) (West 2002).
The relationship between a guardian and his ward is that of fiduciary as a matter of law. In re Estate of Dyniewicz, 271 Ill. App. 3d 616, 622 (1995). The relationship between guardian and ward is equivalent to that between a trustee and a beneficiary. In re Estate of Swiecicki, 106 Ill. 2d 111, 117 (1985). A guardian has an affirmative statutory duty to invest a ward’s money, except for reasonable amounts that may be necessary to pay for “the current or imminent expenses of the ward.” 755 ILCS 5/21 — 2(a) (West 2002). Subsection (c) of section 21 — 2 of the Probate Act provides: “A representative may invest only in the types of property specified in Sections 21 — 2.01 through 21 — 2.15.” 755 ILCS 5/21 — 2(c) (West 2002). A guardian is one type of representative. 755 ILCS 5/1 — 2.15 (West 2002). Section 21 — 2.12 specifies “stocks” as one of the permitted types of investments. See 755 ILCS 5/21 — 2.12 (West 2002). This statute applies to all guardians regardless of alleged expertise.
Regarding uninvested money, the Probate Act provides that a representative/guardian must not allow a ward’s money to remain uninvested in a negligent or wrongful manner. 755 ILCS 5/21 — 2(a) (West 2002). With two exceptions, the Probate Act is silent regarding the standard for investment decisions under sections 21 — 2.01 through 21 — 2.15. Two of those sections expressly hold the representative/ guardian to the prudent-investor standard. 755 ILCS 5/21 — 13, 21 — 14 (West 2002). Section 21 — 13 provides:
“Interests in one or more common trust funds, *** the Investments of which are not restricted to the investments otherwise authorized for representatives by Sections 21 — 01 [stock] and 21- — 14 [mutual funds] of this Act, provided that the investment in such common trust fund meets the standard of the prudent investor rule for the investment of trust funds.” 755 ILCS 5/21 — 13 (West 2002).
Section 21 — 14 contains the same prudent-investor rule regarding investment in mutual funds. 755 ILCS 5/21 — 14 (West 2002).
The standard for the remaining 13 permitted investments has not been established by the statute itself or by an Illinois court. However, the standard of care required in the general management of a ward’s estate is well established in the State of Illinois. A guardian must “manage the ward’s property with the same degree of vigilance, diligence and prudence as a reasonable man would use in managing his own property.” Parsons v. Estate of Wambaugh, 110 Ill. App. 3d 374, 377 (1982); see also Hughes v. People, 111 Ill. 457, 458 (1885) (“A guardian is not liable for an error in judgment in making investments, where he acts in good faith, and is reasonably prudent under the circumstances”); Dyniewicz, 271 Ill. App. 3d at 627 (“A guardian is bound to use ordinary prudence in managing his or her ward’s estate and is liable for losses incurred through culpable indifference and negligence”); Means v. Earls, 15 Ill. App. 273, 274 (1884) (“A guardian is bound to use ordinary prudence and diligence in the management of his ward’s estate”). Because Illinois case law provides the standard by which guardians must manage their wards’ estates generally, we will apply this standard to decisions regarding the limited array of investments permitted by the Probate Act. Application of the reasonable-man, or prudent-person, standard to the remaining 13 permitted investments is in accord with section 21 — (a), which holds representatives/guardians liable for acting in a negligent or wrongful manner. 755 ILCS 5/21 — (a) (West 2002).
Although we do not mandate that a professional standard of care (and the procedural requirements that would come with the standard such as hiring an expert to establish the standard) be applied to defendant, as advocated by the special concurrence, we do agree that the prudent-person standard may to some extent incorporate the characteristics of a particular defendant. In Advincula v. United Blood Services, 176 Ill. 2d 1, 22 (1996), the court stated that, generally, the basic standard of care in a negligence case is that of the “ordinarily careful person” or the “reasonably prudent person.” The Advincula court further stated:
“To be complete, however, a standard of care must also be subjective, in that it makes proper allowance for the actor’s capacity to meet the risk apparent to him, and the circumstances under which he must act. [Citation.]
Accordingly, the basic reasonable person standard allows for and incorporates the physical characteristics of the defendant, himself. [Citations.]” Advincula, 176 Ill. 2d at 22.
In light of this discussion in Advincula, even under the prudent-person standard, it is relevant to consider the unique characteristics of a particular defendant, including whether said defendant is a professional.
Additionally, it would be within the trial court’s discretion to consider a guardian’s professional status when evaluating whether the guardian made a mistake in judgment. A professional guardian would have a more difficult time contending he or she acted in good faith, yet merely made a mistake in judgment that resulted in a loss, if the alleged mistake was one that only a less-skilled investor was likely to make. See In re Estate of Busby, 288 Ill. App. 500, 524-25 (1937) (where the court expressly mentioned the bank’s status as a professional fiduciary in rejecting the bank’s claim that it merely made a mistake in judgment by failing to sell off speculative stock). Thus, even under the prudent-person standard, the trial court may consider professional status as part of the “circumstances” under which defendant acted if defendant raises a mistake-in-judgment defense.
Plaintiffs urge us to adopt the prudent-investor standard provided in section 174 of the Restatement (Second) of Trusts, which imposes a higher standard for all acts carried out by the greater-skilled trustee. Restatement (Second) of Trusts §174 (1959). Section 174 states:
“The trustee is under a duty to the beneficiary in administering the trust to exercise such care and skill as a man of ordinary prudence would exercise in dealing with his own property; and if the trustee has or procures his appointment as trustee by representing that he has greater skill than that of a man of ordinary prudence, he is under a duty to exercise such skill.” (Emphasis added.) Restatement (Second) of Trusts §174, at 379 (1959).
However, because Illinois case law provides a standard, we need not resort to other sources such as section 174 of the Restatement (Second) of Trusts.
The trial court here was confronted by an issue for which little precedent existed, so it turned to, but ultimately rejected, the Restatement (Second) of Trusts. Restatements are not binding on Illinois courts unless adopted by our supreme court; and, because our supreme court has not adopted the Restatement (Second) of Trusts section 174, it merely provides guidance. See Ziemba v. Mierzwa, 142 Ill. 2d 42, 49 (1991); see also In re Marriage of Chrobak, 349 Ill. App. 3d 894, 898 (2004). Although as noted we need not resort to such sources, we observe that the Restatement (Third) of Trusts supports our rejection of plaintiffs’ position that we apply the prudent-investor standard to guardians. The Restatement (Third) of Trusts narrows its scope to trusts only and distinguishes trusts from other relationships that resemble trusts. The Restatement provides:
“Analogous, nontrust relationships. There are a number of widely varying relationships that more or less closely resemble trusts but are not trusts, although the terms ‘trust’ and ‘trustee’ are often used loosely in relation to some of these relationships. It is important to differentiate trusts from these other relationships because many of the rules applicable to trusts are not applicable to them. ***
The term ‘trust’ is sometimes used to encompass all fiduciary relationships. This Restatement does not use the term in this broad sense, given that so many of the rules applicable to trustees are not applicable to other fiduciaries. Thus, an executor, guardian, agent, or corporate officer or director is a fiduciary, but the fiduciary duties and relationships involved differ in many ways from those of a trustee.” (Emphasis added.) Restatement (Third) of Trusts, Introductory Note, at 5 (2003).
Therefore, the Restatement (Third) of Trusts persuades us that it was intended to apply, narrowly, to trusts and ought not be applied to guardianships.
In addition, the higher standard proposed by plaintiffs, the prudent-investor standard, was expressly included in section 5(a)(1) of the Trusts and Trustees Act (760 ILCS 5/5(a)(l) (West 2002)). Section 5(a)(1) of the Trusts and Trustees Act provides:
Ҥ5. Investments, (a) Prudent Investor Rule. A trustee administering a trust has a duty to invest and manage the trust assets as follows:
(1) The trustee has a duty to invest and manage trust assets as a prudent investor would considering the purposes, terms, distribution requirements, and other circumstances of the trust. This standard requires the exercise of reasonable care, skill, and caution and is to be applied to investments not in isolation, but in the context of the trust portfolio as a whole and as a part of an overall investment strategy that should incorporate risk and return objectives reasonably suitable to the trust.” 760 ILCS 5/5(a)(l) (West 2002).
The Probate Act, the act that governs here, does not include the prudent-investor standard or any standard regarding the general investment and management decisions of a guardian. However, the legislature expressly applied the prudent-investor rule to only two limited acts of a guardian. Only decisions to invest in common trust funds (section 21 — 2.13) or mutual funds (section 21 — 2.14) must meet “the standard of the prudent investor rule for the investment” of such funds. 755 ILCS 5/21 — 2.13, 21 — 2.14 (West 2002). Therefore, the legislature chose very specifically to apply the prudent-investor rule only in these two statutory provisions. The investments described in these two statutory provisions are distinguishable from those in the other 13 provisions, as these two provisions entail investments in which the guardian has a financial interest that would reasonably require a higher standard of care. Thus, there is a rationale as to why the prudent-investor rule is set forth only in these two sections.
Given that the legislature included the prudent-investor standard in the Trusts and Trustees Act and omitted it from all but two sections of the Probate Act, we must conclude that the legislature has not definitively adopted a position that would suggest the higher standard should apply. We believe the appropriate standard is the same standard that applies to the general administration of a ward’s estate, i.e., the prudent-person standard. In re Guardianship of Connor, 170 Ill. App. 3d 759, 763 (1988) (the court applied the prudent-person standard to a corporate guardian but not with regard to statutory investments); see also In re Estate of Pirie, 141 Ill. App. 3d 750, 766 (1986) (the court interpreted a portion of the Probate Act to apply the prudent-person standard to investments by corporate executors; it also agreed that if the prudent-investor standard is to be applied, it should be applied by the legislature and not the court).
In this case, plaintiffs pleaded that defendant was the co-guardian of the wards’ money and that it owed a duty to prudently invest it. Yet, defendant invested substantial portions of the wards’ assets in short-term investment funds that generated a return of about 1% after taxes and guardian fees between November 2002 and December 2003. Defendant admitted that it invested 54% of Joseph’s estate, or $1,315,095.29, in short-term investments. Defendant also admitted that it invested 48% of Megan’s estate, or $6,482,689.95, in short-term investments. Defendant provided no explanation for holding the wards’ assets in these short-term investments. The wards had sufficient income and other assets to address their current needs. Plaintiffs also alleged that, if the funds had been invested in any statutorily permissible long-term investments, such as the same fixed-income investments in which defendant had invested other portions of the estates’ assets, the funds would have achieved a substantially greater rate of return over the same period.
Construing the allegations in the complaint in the light most favorable to plaintiffs (Marshall, 222 Ill. 2d at 429), we find that plaintiffs stated a valid claim. As stated above, a guardian is required by law to invest a ward’s money. See 755 ILCS 5/21 — 2(a) (West 2002). Here, plaintiffs alleged that defendant knew that the wards did not need substantial sums of money to address their current needs, and, instead of investing that money in a property that would have yielded a higher return, it decided to invest the money in a property yielding a 1% return. Viewing these allegations in the light most favorable to plaintiffs, we do not believe this is vigilant, diligent, reasonable, or prudent. See Parsons, 110 Ill. App. 3d at 377. We believe a trier of fact could find that the investment of such a large amount in short-term funds was not reasonable or prudent and could constitute a breach of fiduciary duty.
Contrary to defendant’s contention, the fact that the money-market investment was a statutorily permitted investment does not immunize it from liability or limit the requirement that its investments be prudent. Defendant cites only to section 21 — 2(c) of the Probate Act to support its contention that “a guardian is free, without liability, to invest an estate’s assets in any of the statutory investments, in any given mix.” Section 21 — 2(c) provides only: “A representative may invest only in the types of property specified in sections 21 — 2.01 through 21 — 2.15.” 755 ILCS 5/21 — 2(c) (West 2002). According to the plain and ordinary meaning of the statute (see Orlak v. Loyola University Health System, 228 Ill. 2d 1, 8 (2007)), the legislature has merely supplied a list of permissible investment properties. Nothing in the language of the statute indicates that the legislature has abrogated a guardian’s duty to choose the properties in a prudent manner, using discretion and investing as would a reasonable man, using vigilance and diligence. See Parsons, 110 Ill. App. 3d at 377. Section 21 — 2(c) does not state that any arrangement or proportion of investments in the listed properties is per se prudent, and defendant has not cited to, nor can we find, any statute or Illinois case supporting its proposition.
Defendant contends that the proper standard was enunciated by the trial court as that of “bad faith, fraud or acts of omission constituting gross neglect of the estate that are so unreasonable that they cannot be characterized as mere errors in judgment.” Defendant argues that plaintiffs failed to allege that defendant acted in such a manner. Defendant cites Christy v. Christy, 225 Ill. 547 (1907), and In re Estate of Corrington, 124 Ill. 363 (1888), to support its position.
After a close reading of Christy, we determine that it supports our position that the prudent-person standard is all that applies and that the wards successfully pleaded that defendant breached its duty. Christy provides, “[an administrator of an estate] is held to the exercise of only that degree of skill and diligence which an ordinarily prudent man bestows on his own similar private affairs.” Christy, 225 Ill. at 552-53. Christy continues, stating that fraud would render the administrator liable (Christy, 224 Ill. at 554), but fraudulent conduct fits within the parameters of imprudent conduct. Therefore, Christy provides that prudent behavior is the minimum expected of an administrator of an estate. Christy does not provide that only fraud, and nothing less culpable, is required for liability.
Similarly, Corrington supports our position that the prudent-person standard applies. Corrington provides, “[the executor of an estate] must exercise such discretion with fidelity to the interests of the beneficiaries, and in a reasonable and prudent manner.” Corrington, 124 Ill. at 367. Corrington explains:
“He was required to act in good faith, and with that degree of reasonable diligence ordinarily employed in like business affairs by men of common prudence, and if, from his failure to do so, injury and loss occurred to the distributees under the will, he must make good the loss so occasioned. Acts of negligence in respect of the control or disposition of the estate, careless administration of it, or a willful disposition of the assets of the estate, whereby the rights of creditors or legatees, or parties entitled in distribution, are defeated, amount to a devastavit.” (Emphases added.) Corrington, 124 Ill. at 368.
Thus, the prudent-person standard includes a range of conduct that encompasses negligent as well as willful conduct. Therefore, we disagree with defendant that plaintiffs were required to allege “bad faith, fraud or acts of omission constituting gross neglect of the estate that are so unreasonable that they cannot be characterized as mere errors in judgment.”
Defendant also contends that plaintiffs failed to state a cause of action in that they did not allege that defendant caused the estates to “lose money.” We disagree with defendant, as the definition of a loss is broader than as defined by defendant. Illinois guardian and estate cases generally provide that a guardian should not be surcharged for matters in which there is no loss suffered by the estate (see, e.g., Dyniewicz, 271 Ill. App. 3d at 625). However, “loss” includes lost opportunity to invest in other more profitable investments. See Dyniewicz, 271 Ill. App. 3d at 626; see also In re Estate of Swiecicki, 106 Ill. 2d 111 (1985) (bank, which was guardian, invested its ward’s money in its own savings accounts and certificates of deposit and was found liable even though the ward’s estate made money). There is a distinction between losing money as defined by defendant (having less than what you had) and a loss of realizing additional money through more profitable investments (having less than what you could have had absent the breach). The definition of “losing money” proffered by defendant is incorrectly narrow. We reject defendant’s contention that plaintiffs were required to plead that the wards’ estates “lost money” due to defendant’s conduct. Plaintiffs were required to allege only a loss, and they did so.
CONCLUSION
Because plaintiffs stated a cause of action under the prudent-person standard, the trial court erred by granting defendant’s motion to strike plaintiffs’ objection. For these reasons, the judgment of the circuit court of Lake County is reversed, and the cause is remanded for further proceedings consistent with this opinion.
Reversed and remanded.
JORGENSEN, J., concurs.