HIISX Performance — Harbor International Small Cap Fund, Investor Class
Data updated: 2026-09-25
HIISX returned +15.24% year to date and +20.80% over one year to Jul 2026. Annualised returns are +12.65% over 3 years and +6.81% over 5 years. The fund trailed its International Multi-Cap Blend category average: $100 invested three years ago grew to $143, against $159 for the category, and to $121 over one year, against $125. Volatility over the past three years was 14.52% a year. In the 12 months to Jul 2026 the fund lost a net $11.8M, and assets reached $196.79M.
HIISX Growth of $100
What $100 invested in Harbor International Small Cap Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the International Multi-Cap Blend category average over the same months.
| Period | HIISX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $121 | $125 |
| 3 years (Aug 2023 – Jul 2026) | $143 | $159 |
| 5 years (Aug 2021 – Jul 2026) | $139 | $155 |
| Since data start (Aug 2019 – Jul 2026) | $196 | $204 |
HIISX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +15.24% |
| 1 year | +20.80% |
| 3 years (annualised) | +12.65% |
| 5 years (annualised) | +6.81% |
HIISX Annual Returns
Calendar-year total returns of Harbor International Small Cap Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +15.24% |
| 2025 | +24.36% |
| 2024 | −1.12% |
| 2023 | +8.87% |
| 2022 | −8.71% |
| 2021 | +16.79% |
| 2020 | +7.73% |
| 2019 (Aug–Dec) | +10.51% |
HIISX 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 | +4.1% | +5.6% | −8.3% | +7.8% | +4.3% | −1.9% | +3.6% | — | — | — | — | — |
| 2025 | +2.4% | +0.6% | +1.7% | +4.0% | +5.0% | +4.9% | −1.2% | +3.3% | −0.3% | −1.8% | +1.4% | +2.2% |
| 2024 | −2.3% | +0.4% | +4.0% | −2.2% | +4.0% | −4.0% | +5.8% | +1.2% | +1.0% | −8.0% | +0.2% | −0.6% |
| 2023 | +6.8% | −1.4% | −0.3% | +3.3% | −5.9% | +3.3% | +2.2% | −3.6% | −5.3% | −4.9% | +9.1% | +6.5% |
| 2022 | −3.5% | −1.8% | −0.8% | −5.9% | +4.0% | −7.0% | +4.5% | −4.4% | −8.1% | +5.9% | +11.4% | −1.3% |
| 2021 | +0.4% | +5.6% | +4.0% | +4.4% | +3.2% | −1.1% | +0.9% | +1.8% | −3.2% | +0.6% | −5.1% | +4.9% |
| 2020 | −5.5% | −6.5% | −19.9% | +9.8% | +5.5% | +2.5% | +2.1% | +5.7% | −2.0% | −2.1% | +16.4% | +6.4% |
| 2019 | — | — | — | — | — | — | — | −4.6% | +2.3% | +5.8% | +2.2% | +4.9% |
HIISX Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 14.52%
- 3-year Sharpe ratio: 0.56 (vs 4.5% risk-free rate)
- Best month: +9.08% (Nov 2023)
- Worst month: −8.30% (Mar 2026)
HIISX Fund Flows
Monthly money in and out of Harbor International Small Cap Fund, from SEC Form N-PORT.
- 12-month net flow: −$11.8M
- 12-month gross sales (incl. reinvestments): $43.6M
- Sales ÷ redemptions: 0.79×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $2.1M | $2.8M | −$734K |
| Jun 2026 | $2.4M | $2.3M | $60K |
| May 2026 | $1.8M | $2.9M | −$1.1M |
| Apr 2026 | $3.3M | $3.5M | −$221K |
| Mar 2026 | $2.4M | $3.9M | −$1.4M |
| Feb 2026 | $1.9M | $5.4M | −$3.5M |
| Jan 2026 | $2.0M | $4.1M | −$2.1M |
| Dec 2025 | $18.7M | $4.9M | $13.8M |
| Nov 2025 | $1.9M | $8.6M | −$6.7M |
| Oct 2025 | $2.2M | $5.2M | −$2.9M |
| Sep 2025 | $2.5M | $4.1M | −$1.6M |
| Aug 2025 | $2.5M | $7.8M | −$5.4M |
HIISX Assets Under Management
Net assets of Harbor International Small Cap Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $196.79M |
| 2026-04-30 | $187.14M |
| 2026-01-31 | $184.05M |
| 2025-10-31 | $180.67M |
| 2025-07-31 | $188.13M |
| 2025-04-30 | $184.00M |
| 2025-01-31 | $178.57M |
| 2024-10-31 | $224.20M |
| 2024-07-31 | $287.02M |
| 2024-04-30 | $314.94M |
| 2024-01-31 | $326.31M |
| 2023-10-31 | $330.18M |
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.