NESIX Performance — Needham Small Cap Growth Fund, Institutional Class
Data updated: 2026-08-26
NESIX returned +87.13% year to date and +114.08% over one year to Jun 2026. Annualised returns are +34.49% over 3 years and +10.26% over 5 years. The fund beat its US Small Blend category average: $100 invested three years ago grew to $243, against $156 for the category, and to $214 over one year, against $133. Volatility over the past three years was 33.36% a year. In the 12 months to Jun 2026 the fund took in a net $100.3M, and assets reached $417.26M.
NESIX Growth of $100
What $100 invested in Needham Small Cap Growth Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Small Blend category average over the same months.
| Period | NESIX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $214 | $133 |
| 3 years (Jul 2023 – Jun 2026) | $243 | $156 |
| 5 years (Jul 2021 – Jun 2026) | $163 | $141 |
| Since data start (Jan 2020 – Jun 2026) | $338 | $197 |
NESIX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +87.13% |
| 1 year | +114.08% |
| 3 years (annualised) | +34.49% |
| 5 years (annualised) | +10.26% |
NESIX Annual Returns
Calendar-year total returns of Needham Small Cap Growth Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +87.13% |
| 2025 | +11.16% |
| 2024 | +13.46% |
| 2023 | +5.84% |
| 2022 | −29.83% |
| 2021 | +11.77% |
| 2020 | +72.47% |
NESIX 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 | +11.4% | +5.9% | −2.1% | +27.6% | +17.1% | +8.4% | — | — | — | — | — | — |
| 2025 | +2.0% | −7.9% | −12.8% | −4.5% | +11.0% | +11.8% | +2.7% | +1.7% | +6.9% | +8.3% | −7.6% | +2.4% |
| 2024 | −8.4% | +10.3% | +2.6% | −8.1% | +18.9% | −3.5% | +5.9% | −2.0% | −0.2% | −5.0% | +8.4% | −2.6% |
| 2023 | +12.9% | −2.3% | −4.2% | −14.6% | +10.7% | +2.8% | +3.9% | −11.0% | −2.9% | −13.7% | +14.1% | +16.6% |
| 2022 | −9.5% | −1.8% | −0.2% | −16.2% | −3.0% | −8.9% | +7.3% | +2.2% | −11.1% | +5.9% | +4.4% | −0.6% |
| 2021 | +8.5% | +3.7% | −4.4% | +1.3% | +4.6% | +5.5% | +0.7% | −0.4% | −3.8% | +0.1% | −4.9% | +1.2% |
| 2020 | +0.3% | −4.8% | −10.8% | +21.4% | +4.3% | +6.5% | +9.1% | +0.7% | +0.1% | +0.2% | +22.1% | +11.6% |
NESIX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 33.36%
- 3-year Sharpe ratio: 0.90 (vs 4.5% risk-free rate)
- Best month: +27.58% (Apr 2026)
- Worst month: −13.74% (Oct 2023)
NESIX Fund Flows
Monthly money in and out of Needham Small Cap Growth Fund, from SEC Form N-PORT.
- 12-month net flow: $100.3M
- 12-month gross sales (incl. reinvestments): $198.2M
- Sales ÷ redemptions: 2.02×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $39.3M | $10.3M | $29.0M |
| May 2026 | $52.2M | $28.4M | $23.7M |
| Apr 2026 | $71.6M | $15.4M | $56.3M |
| Mar 2026 | $1.4M | $15.5M | −$14.1M |
| Feb 2026 | $2.1M | $4.5M | −$2.4M |
| Jan 2026 | $17.8M | $3.3M | $14.6M |
| Dec 2025 | $2.4M | $3.1M | −$646K |
| Nov 2025 | $2.7M | $2.5M | $172K |
| Oct 2025 | $2.4M | $3.9M | −$1.6M |
| Sep 2025 | $1.5M | $3.4M | −$1.9M |
| Aug 2025 | $2.7M | $3.2M | −$516K |
| Jul 2025 | $2.2M | $4.5M | −$2.3M |
NESIX Assets Under Management
Net assets of Needham Small Cap Growth Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $417.26M |
| 2026-03-31 | $173.42M |
| 2025-12-31 | $151.87M |
| 2025-09-30 | $150.13M |
| 2025-06-30 | $139.09M |
| 2025-03-31 | $122.87M |
| 2024-12-31 | $162.33M |
| 2024-09-30 | $168.61M |
| 2024-06-30 | $165.82M |
| 2024-03-31 | $166.23M |
| 2023-12-31 | $166.57M |
| 2023-09-30 | $143.73M |
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.