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Name

As of 06/12/2026

Price

Aum/Mkt Cap

YIELD

Annualized forward dividend yield. Multiplies the most recent dividend payout amount by its frequency and divides by the previous close price.

Exp Ratio

Expense ratio is the fund’s total annual operating expenses, including management fees, distribution fees, and other expenses, expressed as a percentage of average net assets.

Watchlist

MM S&P 500 Index Fund

MMIZX | Fund

$15.85

$2.29 B

1.14%

$0.18

0.14%

Vitals

YTD Return

9.1%

1 yr return

25.7%

3 Yr Avg Return

20.8%

5 Yr Avg Return

13.2%

Net Assets

$2.29 B

Holdings in Top 10

36.5%

52 WEEK LOW AND HIGH

$15.8
N/A
N/A

Expenses

OPERATING FEES

Expense Ratio 0.14%

SALES FEES

Front Load N/A

Deferred Load N/A

TRADING FEES

Turnover 4.00%

Redemption Fee N/A

Min Investment

Standard (Taxable)

$0

IRA

N/A

Fund Classification

Fund Type

Open End Mutual Fund

Name

As of 06/12/2026

Price

Aum/Mkt Cap

YIELD

Annualized forward dividend yield. Multiplies the most recent dividend payout amount by its frequency and divides by the previous close price.

Exp Ratio

Expense ratio is the fund’s total annual operating expenses, including management fees, distribution fees, and other expenses, expressed as a percentage of average net assets.

Watchlist

MM S&P 500 Index Fund

MMIZX | Fund

$15.85

$2.29 B

1.14%

$0.18

0.14%

MMIZX - Profile

Distributions

  • YTD Total Return 9.1%
  • 3 Yr Annualized Total Return 20.8%
  • 5 Yr Annualized Total Return 13.2%
  • Capital Gain Distribution Frequency Annually
  • Net Income Ratio 1.36%
DIVIDENDS
  • Dividend Yield 1.1%
  • Dividend Distribution Frequency Annual

Fund Details

  • Legal Name
    MM S&P 500 Index Fund
  • Fund Family Name
    MASSMUTUAL FUNDS
  • Inception Date
    Dec 07, 2011
  • Shares Outstanding
    N/A
  • Share Class
    I
  • Currency
    USD
  • Domiciled Country
    US
  • Manager
    Brent Reeder

Fund Description

Principal Investment Strategies
Under normal circumstances, the Fund invests at least 80% (and, typically, substantially all) of its net assets (plus the amount of any borrowings for investment purposes) in the equity securities of companies included within the S&P 500  Index (the “Index”). The Fund invests in the equity securities of companies included in the Index in weightings that approximate the relative composition of the securities contained in the Index, and in S&P 500 Index futures contracts. The Index is a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies. As of December 31, 2025, the market capitalization range of companies included in the Index was $5.54 billion to $4.53 trillion. If the securities represented in the Index were to become concentrated in any particular industry, the Fund’s investments would likewise be concentrated in securities of issuers in that industry; the Index is not currently concentrated in any single industry.
The Fund is passively managed, which means it tries to replicate the investment composition and performance of the Index by using computer programs and statistical procedures. The Fund’s  subadviser, BlackRock Investment Management, LLC (“BlackRock”), will buy and sell securities in response to changes in the Index. The Fund may use Index futures contracts, a type of derivative, to gain exposure to the Index in lieu of
investing in cash, or to reduce its exposure to the Index while it sells the securities in its portfolio. Use of Index futures contracts by the Fund may create investment leverage. Because the Fund, unlike the Index, is subject to fees and transaction expenses, the Fund’s returns are likely to be less than those of the Index. BlackRock expects that, under normal circumstances, the annual performance of the Fund, before fees and expenses, will track the performance of the Index within a 0.95 correlation coefficient.
The Fund intends to be diversified in approximately the same proportion as the Index is diversified. The Fund may become “non-diversified,” as defined in the Investment Company Act of 1940, as amended (the “1940 Act”), solely as a result of a change in relative market capitalization or index weighting of one or more constituents of the Index. In these circumstances, the Fund may hold larger positions in a smaller number of issuers than a diversified fund. Shareholder approval will not be sought if the Fund becomes “non-diversified” due solely to a change in the relative market capitalization or index weighting of one or more constituents of the Index.  
Read More

MMIZX - Performance

Return Ranking - Trailing

Period MMIZX Return Category Return Low Category Return High Rank in Category (%)
YTD 9.1% -12.2% 40.2% 30.59%
1 Yr 25.7% -14.1% 86.5% 28.81%
3 Yr 20.8%* 0.8% 36.7% 23.78%
5 Yr 13.2%* -3.6% 18.8% 18.81%
10 Yr 15.4%* 6.2% 55.8% 12.61%

* Annualized

Return Ranking - Calendar

Period MMIZX Return Category Return Low Category Return High Rank in Category (%)
2025 0.2% -25.2% 36.9% 79.52%
2024 -5.0% -51.6% 37.0% 96.72%
2023 17.5% -15.6% 47.4% 58.84%
2022 -37.9% -56.3% 1.1% 98.12%
2021 13.1% -27.2% 537.8% 68.19%

Total Return Ranking - Trailing

Period MMIZX Return Category Return Low Category Return High Rank in Category (%)
YTD 9.1% -12.2% 40.2% 30.59%
1 Yr 25.7% -14.1% 86.5% 28.81%
3 Yr 20.8%* 0.8% 36.7% 23.78%
5 Yr 13.2%* -3.6% 18.8% 18.81%
10 Yr 15.4%* 6.2% 55.8% 12.61%

* Annualized

Total Return Ranking - Calendar

Period MMIZX Return Category Return Low Category Return High Rank in Category (%)
2025 17.7% -3.4% 43.4% 28.19%
2024 24.7% -20.1% 44.5% 26.77%
2023 26.2% 0.3% 47.4% 28.44%
2022 -18.2% -31.9% 11.0% 51.61%
2021 28.6% 4.1% 537.8% 23.88%

NAV & Total Return History

MMIZX - Holdings

Concentration Analysis

MMIZX Category Low Category High MMIZX % Rank
Net Assets 2.29 B 1.83 M 2.31 T 47.43%
Number of Holdings 506 2 3885 19.24%
Net Assets in Top 10 740 M 3.24 M 639 B 48.85%
Weighting of Top 10 36.47% 2.5% 102.7% 62.33%

Top 10 Holdings

  1. NVIDIA Corp 7.57%
  2. Apple Inc 6.66%
  3. Microsoft Corp 4.91%
  4. Amazon.com Inc 3.64%
  5. Alphabet Inc 2.99%
  6. Broadcom Inc 2.62%
  7. Alphabet Inc 2.40%
  8. Meta Platforms Inc 2.24%
  9. Tesla Inc 1.87%
  10. Berkshire Hathaway Inc 1.57%

Asset Allocation

Weighting Return Low Return High MMIZX % Rank
Stocks 		99.90% 0.00% 105.13% 6.38%
Other 		0.09% -13.91% 100.00% 17.82%
Cash 		0.03% 0.00% 69.97% 91.93%
Preferred Stocks 		0.00% 0.00% 5.74% 24.82%
Convertible Bonds 		0.00% 0.00% 5.54% 19.84%
Bonds 		0.00% 0.00% 136.21% 23.76%

Stock Sector Breakdown

Weighting Return Low Return High MMIZX % Rank
Technology 		25.58% 0.00% 48.94% 26.67%
Healthcare 		13.70% 0.00% 52.29% 71.52%
Financial Services 		13.22% 0.00% 55.59% 59.86%
Consumer Cyclical 		11.83% 0.00% 30.33% 22.60%
Communication Services 		9.36% 0.00% 27.94% 26.13%
Industrials 		8.15% 0.00% 29.90% 75.05%
Consumer Defense 		6.51% 0.00% 47.71% 59.86%
Energy 		3.87% 0.00% 41.64% 58.41%
Utilities 		2.74% 0.00% 15.25% 45.84%
Real Estate 		2.72% 0.00% 31.91% 52.62%
Basic Materials 		2.31% 0.00% 19.45% 66.73%

Stock Geographic Breakdown

Weighting Return Low Return High MMIZX % Rank
US 		99.90% 0.00% 101.31% 5.14%
Non US 		0.00% 0.00% 70.69% 35.02%

MMIZX - Expenses

Operational Fees

MMIZX Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Expense Ratio 0.14% 0.01% 4.93% 91.25%
Management Fee 0.10% 0.00% 1.89% 11.58%
12b-1 Fee N/A 0.00% 1.00% N/A
Administrative Fee N/A 0.00% 0.85% 24.52%

Sales Fees

MMIZX Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Front Load N/A 1.00% 5.75% N/A
Deferred Load N/A 1.00% 4.00% N/A

Trading Fees

MMIZX Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Max Redemption Fee N/A 0.25% 2.00% N/A

Related Fees

Turnover provides investors a proxy for the trading fees incurred by mutual fund managers who frequently adjust position allocations. Higher turnover means higher trading fees.

MMIZX Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Turnover 4.00% 0.00% 268.00% 7.52%

MMIZX - Distributions

Dividend Yield Analysis

MMIZX Category Low Category High MMIZX % Rank
Dividend Yield 1.14% 0.00% 25.47% 91.05%

Dividend Distribution Analysis

MMIZX Category Low Category High Category Mod
Dividend Distribution Frequency Annual Annual Quarterly Annual

Net Income Ratio Analysis

MMIZX Category Low Category High MMIZX % Rank
Net Income Ratio 1.36% -54.00% 2.44% 10.51%

Capital Gain Distribution Analysis

MMIZX Category Low Category High Capital Mode
Capital Gain Distribution Frequency Annually Annually Semi-Annually Annually

Distributions History

View More +

MMIZX - Fund Manager Analysis

Managers

Brent Reeder

Start Date

Tenure

Tenure Rank

Apr 02, 2007

15.17

15.2%

Brent Reeder, Senior Vice President at The Northern Trust Company, Chicago, is the Team Leader-Domestic Index in the Quantitative Management Group of Northern Trust Global Investments (NTGI). Before his current role, he was a Portfolio Manager in the Quantitative Management Group of NTGI, responsible for the management of index portfolios. Brent has a broad range of expertise in both large capitalization and small capitalization index mandates. Prior to this, Brent spent five years in trust operations as a team leader of the Foundations and Endowments team. He received a B.A. degree in Economics from DePauw University and an M.B.A. degree in Finance from DePaul University. Brent is an Associated Person with the National Futures Association.

Tenure Analysis

Category Low Category High Category Average Category Mode
0.04 39.02 7.35 2.25

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