INTERNAL CONTROL RPT

ReportofIndependentRegisteredPublicAccountingFirm 

TotheBoardofTrusteesofPrudentialInvestmentPortfolios3andShareholdersofPGIMJennison

FocusedGrowthFund 

InplanningandperformingourauditofthefinancialstatementsofPGIMJennison20/20FocusFund(one of the funds constituting Prudential Investment Portfolios 18, referred to hereafter as the "Fund") asof and for the year ended November 30, 2021, in accordance with the standards of the Public CompanyAccounting Oversight Board (United States) (PCAOB), we considered the Fund’s internal control overfinancial reporting, including controls over safeguarding securities, as a basis for designing our auditingprocedures for the purpose of expressing our opinion on the financial statements and to comply with therequirements of Form N-CEN, but not for the purpose of expressing an opinion on the effectiveness of theFund’s internal control over financial reporting. Accordingly, we do not express an opinion on theeffectivenessoftheFund’sinternalcontrolover financialreporting. 

The management of the Fund is responsible for establishing and maintaining effective internal controlover financial reporting. In fulfilling this responsibility, estimates and judgments by management arerequired to assess the expected benefits and related costs of controls. A company’s internal control overfinancial reporting is a process designed to provide reasonable assurance regarding the reliability offinancial reporting and the preparation of financial statements for external purposes in accordance withgenerally accepted accounting principles. A company’s internal control over financial reporting includesthose policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail,accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) providereasonable assurance that transactions are recorded as necessary to permit preparation of financialstatements in accordance with generally accepted accounting principles, and that receipts andexpenditures of the company are being made only in accordance with authorizations of management anddirectors of the company; and (3) provide reasonable assurance regarding prevention or timely detectionof unauthorized acquisition, use or disposition of a company’s assets that could have a material effect onthefinancialstatements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detectmisstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the riskthat controls may become inadequate because of changes in conditions, or that the degree of compliancewiththepoliciesorproceduresmaydeteriorate. 

A deficiency in internal control over financial reporting exists when the design or operation of a controldoes not allow management or employees, in the normal course of performing their assigned functions, toprevent or detect misstatements on a timely basis. A material weakness is a deficiency, or a combinationof deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that amaterial misstatement of the company’s annual or interim financial statements will not be prevented ordetectedonatimelybasis. 

Our consideration of the Fund’s internal control over financial reporting was for the limited purposedescribed in the first paragraph and would not necessarily disclose all deficiencies in internal control overfinancial reporting that might be material weaknesses under standards established by the PCAOB.However, we noted no deficiencies in the Fund’s internal control over financial reporting and its operation,including controls over safeguarding securities, that we consider to be material weaknesses as definedaboveas ofNovember30,2021.

This report is intended solely for the information and use of the Board of Trustees of PrudentialInvestment Portfolios 3 and the Securities and Exchange Commission and is not intended to be andshouldnotbeusedbyanyoneotherthanthesespecifiedparties. 

/s/ PricewaterhouseCoopers LLP 

January14,2022

 

2 

INTERNAL CONTROL RPT

ReportofIndependentRegisteredPublicAccountingFirm 

TotheBoardofTrusteesofPrudentialInvestmentPortfolios18andShareholdersofPGIMJennison MLPFund

In planning and performing our audit of the financial statements of PGIM Jennison MLP Fund (one of thefunds constituting Prudential Investment Portfolios 18, referred to hereafter as the "Fund") as of and forthe year ended November 30, 2021, in accordance with the standards of the Public Company AccountingOversight Board (United States) (PCAOB), we considered the Fund's internal control over financialreporting,includingcontrolsoversafeguardingsecurities,asabasisfordesigningourauditingprocedures for the purpose of expressing our opinion on the financial statements and to comply with therequirements of Form N-CEN, but not for the purpose of expressing an opinion on the effectiveness of theFund’s internal control over financial reporting. Accordingly, we do not express an opinion on theeffectivenessoftheFund’sinternalcontrolover financialreporting. 

The management of the Fund is responsible for establishing and maintaining effective internal controlover financial reporting. In fulfilling this responsibility, estimates and judgments by management arerequired to assess the expected benefits and related costs of controls. A company’s internal control overfinancial reporting is a process designed to provide reasonable assurance regarding the reliability offinancial reporting and the preparation of financial statements for external purposes in accordance withgenerally accepted accounting principles. A company’s internal control over financial reporting includesthose policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail,accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) providereasonable assurance that transactions are recorded as necessary to permit preparation of financialstatements in accordance with generally accepted accounting principles, and that receipts andexpenditures of the company are being made only in accordance with authorizations of management anddirectors of the company; and (3) provide reasonable assurance regarding prevention or timely detectionof unauthorized acquisition, use or disposition of a company’s assets that could have a material effect onthefinancialstatements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detectmisstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the riskthat controls may become inadequate because of changes in conditions, or that the degree of compliancewiththepoliciesorproceduresmaydeteriorate. 

A deficiency in internal control over financial reporting exists when the design or operation of a controldoesnotallowmanagementoremployees,inthenormalcourseofperformingtheirassignedfunctions,to prevent or detect misstatements on a timely basis. A material weakness is a deficiency, or acombination of deficiencies, in internal control over financial reporting, such that there is a reasonablepossibility that a material misstatement of the company’s annual or interim financial statements will not bepreventedordetectedonatimelybasis. 

Our consideration of the Fund’s internal control over financial reporting was for the limited purposedescribed in the first paragraph and would not necessarily disclose all deficiencies in internal control overfinancial reporting that might be material weaknesses under standards established by the PCAOB.However, we noted no deficiencies in the Fund’s internal control over financial reporting and its operation,including controls over safeguarding securities, that we consider to be material weaknesses as definedaboveas ofNovember30,2021.

This report is intended solely for the information and use of the Board of Trustees of Prudential InvestmentPortfolios 18 and the Securities and Exchange Commission and is not intended to be and should not beusedbyanyoneotherthanthesespecifiedparties. 

/s/ PricewaterhouseCoopers LLP 

January14,2022 

 

2