Mutual of America Institutional Funds, Inc.
  Total Return Performance Data
Periods Ended 9/30/19
  Average Annual Returns
Fund (Inception Date) - NASDAQ Ticker Symbol
Benchmark Index
3 Months Year-to-Date 1 Year 3 Years 5 Years 10 Years
Money Market Fund 1 (05/01/1997) - MAFXX
7-day Current Yield as of 10/09/2019 was 1.79%
7-day Effective Annual Yield as of 10/09/2019 was 1.79%
0.51% 1.64% 2.17% 1.38% 0.87% 0.44%
FTSE 3-Month Treasury Bill Index 0.56% 1.78% 2.36% 1.52% 0.96% 0.52%
Bond Fund (05/01/1996) - MABOX
2.13% 7.72% 9.70% 2.84% 3.47% 3.85%
Bloomberg Barclays U.S. Aggregate Bond Index 2.27% 8.52% 10.30% 2.92% 3.38% 3.75%
Equity Index Fund (05/03/1999) - MAEQX
1.67% 20.56% 4.22% 13.26% 10.72% 13.11%
S&P 500 Index^ 1.70% 20.55% 4.25% 13.39% 10.84% 13.24%
All America Fund (05/01/1996) - MALLX
0.77% 18.34% 0.39% 10.47% 8.89% 11.67%
S&P 500 Index^ 1.70% 20.55% 4.25% 13.39% 10.84% 13.24%
Small Cap Value Fund (05/01/2007) - MAVSX
-0.63% 11.30% -6.90% 4.25% 5.16% 9.28%
Russell 2000 Value Index -0.57% 12.82% -8.24% 6.54% 7.17% 10.06%
Small Cap Growth Fund (05/01/2007) - MASSX
-2.53% 14.17% -8.38% 7.63% 7.73% 10.83%
Russell 2000 Growth Index -4.17% 15.34% -9.63% 9.79% 9.08% 12.25%
Mid-Cap Equity Index Fund (09/01/2000) - MAMQX
-0.14% 17.79% -2.62% 9.18% 8.70% 12.39%
S&P MidCap 400 Index^ -0.09% 17.87% -2.49% 9.38% 8.88% 12.56%
International Fund (05/01/2019) - MAIUX
-0.68% N/A N/A N/A N/A -0.60%
MSCI EAFE Index -1.07% N/A N/A N/A N/A -0.23%

The performance data shown above represent past performance, which is not a guarantee of future results. Investment returns and net asset values will fluctuate so that shares, when redeemed, may be worth more or less than their original cost. Fund total return performance currently may be lower or higher than the figures stated above.

The total return figures reflect the reinvestment of investment income and capital gains and losses, and are net of expenses which include management fees. Returns would have been lower without expense reimbursements provided by the Adviser. Amounts purchased or redeemed within the periods shown would experience different rates of return based on the net asset values on the dates of such transactions.

Annual Fees and Expenses

The following table describes the fees and expenses that you may pay if you buy and hold shares of the Funds. Annual operating expenses are shown as a percentage of average net assets and are based on actual operating expenses incurred by the Fund (before reimbursement) in 2019. Net Expenses consist of investment management fees. These net expenses may be slightly higher or lower than the investment management fee percentages set forth in the prospectus due to rounding.

  All
America
Fund
Small Cap
Value
Fund
Small Cap
Growth Fund
Bond
Fund
Total Annual Fund
Operating Expenses
 2.51%  2.08%  2.20%  1.78%
Expense Reimbursement (2.01%) (1.23%) (1.35%) (1.33%)
Net Expenses     .50%***     .85%***     .85%***     .45%***

  Equity
Index
Fund
Mid-Cap
Equity
Index
Fund
Money
Market
Fund
International
Fund
Total Annual Fund
Operating Expenses
 1.35%  1.40%  1.31%  2.23%
Expense Reimbursement (1.22%) (1.27%) (1.11%) (1.85%)
Net Expenses  .13%**  .13%** .20%*      .38%****

1 Please note: the Current Yield quotation more closely reflects the current earnings of the Money Market fund than the total return performance data. The Current Yield is calculated based on the income generated by an investment in the fund over a seven-day period and is expressed as an annual percentage rate. The 7-day Effective Annual Yield is an annual percentage rate which includes the effects of compounding. The 7-day Effective Annual Yield assumes that income earned from the fund's investments is reinvested in the fund.

Before investing in Mutual of America Institutional Funds, Inc., you should consider the investment objectives, risks, charges and expenses carefully. This and other information is contained in the prospectus. Please read the prospectus carefully before investing. The prospectus can be obtained by calling 1-800-914-8716. Please note that an investment in the Institutional Funds is subject to investment risk and that your principal may increase or decrease.

Money Market Fund Investors: You could lose money by investing in the Fund. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.

* The Adviser contractually agreed beginning as of January 1, 2013, to limit the Fund's total operating expenses (excluding any extraordinary expenses that may arise and charges incurred in trading portfolio securities) to its investment management fees. This contractual obligation continues in effect until April 30, 2020, and will continue for each succeeding 12 month period thereafter, unless either the Investment Company gives not less than 30 days' notice of termination to the Adviser or the Adviser gives notice of termination to the Investment Company within a 45 day calendar period prior to the next May 1.

Beginning in 2009, the Adviser has waived a portion or all of the Money Market Fund's Management Fee (not to exceed 0.20%), and other expenses of the Fund for which the Adviser is entitled to reimbursement, to cause the cumulative monthly total investment returns, net of fees and expenses, to be no less than zero. This waiver is not permanent or contractual, is at the discretion of the Adviser, and may be revoked in whole or in part at any time. Upon such revocation, the fund will not be liable for the fees and expenses that were waived, but the full amount of these fees and expenses will be imposed from the time of revocation forward.

** The Adviser contractually agreed beginning as of April 1, 2002, to limit the Fund's total operating expenses (excluding any extraordinary expenses that may arise and charges incurred in trading portfolio securities) to its investment management fees. This contractual obligation continues in effect until April 30, 2020, and will continue for each succeeding 12 month period thereafter, unless either the Investment Company gives not less than 30 days' notice of termination to the Adviser or the Adviser gives written notice of termination to the Investment Company within a 45 calendar day period prior to the next May 1.

*** The Adviser contractually agreed beginning as of January 1, 2013, to reimburse or otherwise limit the Fund's total operating expenses (excluding any extraordinary expenses that may arise and charges incurred in trading portfolio securities) to its investment management fees. This contractual obligation continues in effect until April 30, 2020, and will continue for each succeeding 12 month period thereafter, unless either the Investment Company gives not less than 30 days' notice of termination to the Adviser or the Adviser gives written notice of termination to the Investment Company within a 45 calendar day period prior to the next May 1.

**** The Adviser contractually agreed beginning as of the inception of the Fund to reimburse or otherwise limit the Fund's total operating expenses (excluding any extraordinary expenses that may arise and charges incurred in trading portfolio securities) to its investment management fees and underlying fund fees and expenses. This contractual obligation continues in effect until April 30, 2020, and will continue for each succeeding 12 month period thereafter, unless either the Investment Company gives not less than 30 days' notice of termination to the Adviser or the Adviser gives written notice of termination to the Investment Company within a 45 calendar day period prior to the next May 1.

Or Since Inception if the Fund has been in existence for less than 10 years.

Source for benchmark returns information: eVestment.

DIVIDENDS:
Dividend distributions will be declared at the end of June and end of December to pay out all or substantially all of the Fund's net investment income (dividends) and declares dividends at the end of December to pay out substantially all of the Fund's net realized short and long term capital gains (capital gains distributions). A Fund may make a special distribution on or before September 15 of each year to comply with federal tax law requirements for mutual funds. Dividend distributions will be reinvested in full, reinvested from any Fund in shares of the Money Market Fund or paid in cash.

^ "Standard & Poor's," "S&P 500" and "S&P MidCap 400" are trademarks of the McGraw-Hill Companies, Inc., and have been licensed for use by the Investment Company. Standard & Poor's does not sponsor, endorse, sell or promote the Equity Index, All America or Mid-Cap Equity Index Funds. It has no obligation or liability for the sale or operation of the Funds and makes no representations as to the advisability of investing in the Funds.


Distributor, Mutual of America Securities LLC, member FINRA and SIPC.