MMNJX Performance — MassMutual Small Cap Growth Equity Fund, Class Y
Data updated: 2026-08-27
MMNJX returned +29.74% year to date and +45.09% over one year to Jun 2026. The annualised 3-year return is +20.59%. The fund beat its US Multi-Cap Growth category average: $100 invested three years ago grew to $175, against $164 for the category, and to $145 over one year, against $122. Volatility over the past three years was 18.87% a year. In the 12 months to Jun 2026 the fund took in a net $47.8M, and assets reached $736.42M.
MMNJX Growth of $100
What $100 invested in MassMutual Small Cap Growth Equity Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Multi-Cap Growth category average over the same months.
| Period | MMNJX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $145 | $122 |
| 3 years (Jul 2023 – Jun 2026) | $175 | $164 |
| Since data start (Jan 2023 – Jun 2026) | $177 | $193 |
MMNJX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +29.74% |
| 1 year | +45.09% |
| 3 years (annualised) | +20.59% |
MMNJX Annual Returns
Calendar-year total returns of MassMutual Small Cap Growth Equity Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +29.74% |
| 2025 | +11.32% |
| 2024 | +15.28% |
| 2023 | +6.59% |
MMNJX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +5.5% | +2.3% | −4.7% | +13.3% | +4.0% | +7.0% | — | — | — | — | — | — |
| 2025 | −7.0% | −7.4% | +4.3% | −0.4% | +5.5% | +5.4% | +1.2% | +3.1% | +2.5% | +2.5% | +2.8% | −0.8% |
| 2024 | +2.9% | +7.5% | −2.0% | +0.4% | +4.3% | −6.2% | +1.8% | +0.9% | +5.4% | −8.1% | +10.8% | −2.0% |
| 2023 | −2.2% | −2.6% | 0.0% | +8.8% | −1.6% | −0.7% | −5.4% | −2.8% | +2.1% | +10.6% | +9.1% | −7.0% |
MMNJX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 18.87%
- 3-year Sharpe ratio: 0.85 (vs 4.5% risk-free rate)
- Best month: +13.30% (Apr 2026)
- Worst month: −8.07% (Oct 2024)
MMNJX Fund Flows
Monthly money in and out of MassMutual Small Cap Growth Equity Fund, from SEC Form N-PORT.
- 12-month net flow: $47.8M
- 12-month gross sales (incl. reinvestments): $286.8M
- Sales ÷ redemptions: 1.20×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $24.9M | $22.7M | $2.3M |
| May 2026 | $23.2M | $22.5M | $689K |
| Apr 2026 | $28.7M | $8.7M | $20.0M |
| Mar 2026 | $8.0M | $14.9M | −$6.8M |
| Feb 2026 | $8.2M | $10.2M | −$2.1M |
| Jan 2026 | $6.4M | $19.3M | −$12.8M |
| Dec 2025 | $103.4M | $34.6M | $68.8M |
| Nov 2025 | $15.8M | $18.9M | −$3.2M |
| Oct 2025 | $22.0M | $13.3M | $8.7M |
| Sep 2025 | $29.7M | $24.0M | $5.6M |
| Aug 2025 | $12.2M | $27.0M | −$14.9M |
| Jul 2025 | $4.3M | $22.8M | −$18.5M |
MMNJX Assets Under Management
Net assets of MassMutual Small Cap Growth Equity Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $736.42M |
| 2026-03-31 | $562.61M |
| 2025-12-31 | $568.26M |
| 2025-09-30 | $565.62M |
| 2025-06-30 | $556.93M |
| 2025-03-31 | $543.49M |
| 2024-12-31 | $767.38M |
| 2024-09-30 | $772.30M |
| 2024-06-30 | $733.80M |
| 2024-03-31 | $907.29M |
| 2023-12-31 | $839.82M |
| 2023-09-30 | $759.71M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.