June 4, 2019

Sean Burke
Chief Financial Officer and Executive Vice President
Investors Bancorp, Inc.
101 JFK Parkway
Short Hills, NJ 07078

       Re: Investors Bancorp, Inc.
           Form 10-K for Fiscal Year Ended December 31, 2018
           Filed March 1, 2019
           File No. 001-36441

Dear Mr. Burke:

       We have reviewed your filing and have the following comments. In some of
our
comments, we may ask you to provide us with information so we may better
understand your
disclosure.

       Please respond to these comments within ten business days by providing
the requested
information or advise us as soon as possible when you will respond. If you do
not believe our
comments apply to your facts and circumstances, please tell us why in your
response.

       After reviewing your response to these comments, we may have additional
comments.

Form 10-K filed March 1, 2019

Item 6.Selected Financial Data
Selected Financial Ratios and Other Data, page 45

1.    We note your presentation of "Return on assets-Adjusted", "Return on
equity-Adjusted",
      "Efficiency ratio-Adjusted", "Tangible equity to tangible assets" and
"Tangible book
      value per common share" on page 45. These measures appear to be non-GAAP
measures
      as defined by Regulation G and Item 10(e) of Regulation S-K as they are
not required by
      GAAP, Commission Rules, or banking regulatory requirements. To the extent
you
      provide non-GAAP financial measures in future filings, please disclose
the information
      required in Item 10(e) of Regulation S-K.
Note 12. Commitments and Contingencies   Financial Transactions with
Off-Balance Sheet Risk
and Concentrations of Credit Risk, page 107

2.    Please revise this section and MD&A as appropriate in future filings to
quantify the
 Sean Burke
Investors Bancorp, Inc.
June 4, 2019
Page 2
         amount of loans at each period end presented that cause a
concentration of credit risk (e.g.
         interest-only, no income verification loans, etc.) and to clearly
describe the terms of the
         loans that causes the concentration. Refer to ASC 825-10-50-20 for
guidance.
         Additionally, revise MD&A to discuss material trends in these loans
and the impact on
         credit risk. In your response please provide a draft of your
disclosure for the periods
         presented in the current Form 10-K.
        We remind you that the company and its management are responsible for
the accuracy
and adequacy of their disclosures, notwithstanding any review, comments, action
or absence of
action by the staff.

       You may contact William Schroeder, Staff Accountant, at 202-551-3294 or
Michael
Volley, Staff Accountant, at 202-551-3437 if you have questions.



FirstName LastNameSean Burke                                   Sincerely,
Comapany NameInvestors Bancorp, Inc.
                                                               Division of
Corporation Finance
June 4, 2019 Page 2                                            Office of
Financial Services
FirstName LastName