HISGX Performance — Harbor Small Cap Growth Fund, Investor Class
Data updated: 2026-09-25
HISGX returned +11.49% year to date and +20.30% over one year to Jul 2026. Annualised returns are +12.00% over 3 years and +5.10% over 5 years. The fund beat its US Mid-Cap Growth category average: $100 invested three years ago grew to $140, against $139 for the category, and to $120 over one year, against $110. Volatility over the past three years was 20.46% a year. In the 12 months to Jul 2026 the fund took in a net $272.3M, and assets reached $2.67B.
HISGX Growth of $100
What $100 invested in Harbor Small Cap Growth Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Growth category average over the same months.
| Period | HISGX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $120 | $110 |
| 3 years (Aug 2023 – Jul 2026) | $140 | $139 |
| 5 years (Aug 2021 – Jul 2026) | $128 | $121 |
| Since data start (Aug 2019 – Jul 2026) | $201 | $189 |
HISGX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +11.49% |
| 1 year | +20.30% |
| 3 years (annualised) | +12.00% |
| 5 years (annualised) | +5.10% |
HISGX Annual Returns
Calendar-year total returns of Harbor Small Cap Growth Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +11.49% |
| 2025 | +10.95% |
| 2024 | +9.03% |
| 2023 | +21.68% |
| 2022 | −25.81% |
| 2021 | +9.40% |
| 2020 | +37.84% |
| 2019 (Aug–Dec) | +9.64% |
HISGX 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 | +5.7% | +2.4% | −7.0% | +13.1% | +4.4% | +1.4% | −7.4% | — | — | — | — | — |
| 2025 | +3.8% | −5.7% | −8.6% | −0.3% | +6.5% | +5.5% | +2.6% | +1.6% | +3.2% | +4.0% | +0.8% | −1.8% |
| 2024 | −0.9% | +7.8% | +1.9% | −8.1% | +2.1% | +0.5% | +5.8% | +0.8% | +2.4% | −2.7% | +9.5% | −8.8% |
| 2023 | +9.1% | +1.0% | −2.3% | −0.5% | +0.1% | +7.3% | +1.6% | −3.7% | −4.0% | −8.5% | +10.0% | +11.9% |
| 2022 | −12.3% | −0.9% | +1.1% | −9.3% | −2.3% | −7.6% | +11.1% | −2.9% | −8.2% | +7.2% | +1.6% | −4.4% |
| 2021 | −1.2% | +5.6% | −0.6% | +3.6% | −3.7% | +1.9% | −1.5% | +5.3% | −4.1% | +4.9% | −5.4% | +5.1% |
| 2020 | +1.4% | −8.5% | −17.9% | +16.1% | +10.3% | +2.9% | +4.2% | +6.9% | −0.4% | +1.7% | +11.4% | +9.2% |
| 2019 | — | — | — | — | — | — | — | −2.5% | −0.6% | +3.1% | +6.7% | +2.8% |
HISGX Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 20.46%
- 3-year Sharpe ratio: 0.37 (vs 4.5% risk-free rate)
- Best month: +13.13% (Apr 2026)
- Worst month: −8.83% (Dec 2024)
HISGX Fund Flows
Monthly money in and out of Harbor Small Cap Growth Fund, from SEC Form N-PORT.
- 12-month net flow: $272.3M
- 12-month gross sales (incl. reinvestments): $780.6M
- Sales ÷ redemptions: 1.54×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $76.4M | $66.0M | $10.4M |
| Jun 2026 | $97.7M | $34.8M | $63.0M |
| May 2026 | $96.9M | $37.5M | $59.3M |
| Apr 2026 | $99.0M | $38.1M | $60.9M |
| Mar 2026 | $69.7M | $33.2M | $36.5M |
| Feb 2026 | $51.4M | $41.2M | $10.2M |
| Jan 2026 | $80.9M | $39.7M | $41.2M |
| Dec 2025 | $50.1M | $53.2M | −$3.1M |
| Nov 2025 | $51.0M | $32.1M | $18.9M |
| Oct 2025 | $34.9M | $38.3M | −$3.5M |
| Sep 2025 | $51.2M | $67.2M | −$16.0M |
| Aug 2025 | $21.3M | $26.9M | −$5.6M |
HISGX Assets Under Management
Net assets of Harbor Small Cap Growth Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $2.67B |
| 2026-04-30 | $2.59B |
| 2026-01-31 | $2.29B |
| 2025-10-31 | $2.16B |
| 2025-07-31 | $2.00B |
| 2025-04-30 | $1.80B |
| 2025-01-31 | $2.09B |
| 2024-10-31 | $1.77B |
| 2024-07-31 | $1.67B |
| 2024-04-30 | $1.48B |
| 2024-01-31 | $1.28B |
| 2023-10-31 | $985.06M |
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.