BESIX Performance — William Blair Emerging Markets Small Cap Growth Fund, Class I
Data updated: 2026-08-14
BESIX returned +21.23% year to date and +32.38% over one year to Jun 2026. Annualised returns are +17.75% over 3 years and +6.03% over 5 years. The fund trailed its Emerging Markets Equity category average: $100 invested three years ago grew to $163, against $179 for the category, and to $132 over one year, against $141. Volatility over the past three years was 17.41% a year. In the 12 months to Jun 2026 the fund lost a net $22.9M, and assets reached $422.64M.
BESIX Growth of $100
What $100 invested in William Blair Emerging Markets Small Cap Growth Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Emerging Markets Equity category average over the same months.
| Period | BESIX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $132 | $141 |
| 3 years (Jul 2023 – Jun 2026) | $163 | $179 |
| 5 years (Jul 2021 – Jun 2026) | $134 | $144 |
| Since data start (Jul 2019 – Jun 2026) | $224 | $195 |
BESIX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +21.23% |
| 1 year | +32.38% |
| 3 years (annualised) | +17.75% |
| 5 years (annualised) | +6.03% |
BESIX Annual Returns
Calendar-year total returns of William Blair Emerging Markets Small Cap Growth Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +21.23% |
| 2025 | +13.95% |
| 2024 | +8.36% |
| 2023 | +22.25% |
| 2022 | −27.92% |
| 2021 | +15.51% |
| 2020 | +32.60% |
| 2019 (Jul–Dec) | +10.64% |
BESIX 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 | +8.3% | +7.4% | −9.9% | +15.4% | +1.6% | −1.3% | — | — | — | — | — | — |
| 2025 | −7.1% | −6.1% | +1.4% | +4.0% | +4.9% | +8.1% | −1.2% | +5.6% | +2.5% | +3.0% | −2.2% | +1.3% |
| 2024 | −1.0% | +3.5% | +0.7% | +0.5% | +2.5% | +3.8% | −3.9% | +1.8% | +0.9% | −1.0% | −0.4% | +0.9% |
| 2023 | +4.7% | −1.9% | +2.4% | −0.9% | +2.5% | +4.9% | +3.1% | −1.7% | −2.6% | −5.2% | +11.2% | +4.8% |
| 2022 | −6.5% | −4.5% | +0.7% | −7.8% | −2.9% | −9.2% | +2.6% | +2.0% | −5.1% | +2.7% | +2.5% | −5.7% |
| 2021 | +2.4% | +1.9% | −1.8% | +3.5% | +3.3% | +3.8% | −2.6% | +4.5% | −1.4% | +1.1% | −2.0% | +2.2% |
| 2020 | +0.5% | −2.9% | −18.9% | +14.5% | +5.7% | +5.6% | +10.7% | +1.9% | −3.4% | +1.4% | +8.5% | +9.4% |
| 2019 | — | — | — | — | — | — | −0.9% | −1.0% | +2.1% | +6.3% | −2.3% | +6.3% |
BESIX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 17.41%
- 3-year Sharpe ratio: 0.76 (vs 4.5% risk-free rate)
- Best month: +15.41% (Apr 2026)
- Worst month: −9.90% (Mar 2026)
BESIX Fund Flows
Monthly money in and out of William Blair Emerging Markets Small Cap Growth Fund, from SEC Form N-PORT.
- 12-month net flow: −$22.9M
- 12-month gross sales (incl. reinvestments): $64.7M
- Sales ÷ redemptions: 0.74×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $2.9M | $3.0M | −$78K |
| May 2026 | $2.7M | $19.3M | −$16.6M |
| Apr 2026 | $2.1M | $3.4M | −$1.4M |
| Mar 2026 | $3.5M | $6.3M | −$2.8M |
| Feb 2026 | $3.3M | $4.3M | −$989K |
| Jan 2026 | $4.4M | $4.9M | −$412K |
| Dec 2025 | $35.3M | $16.1M | $19.1M |
| Nov 2025 | $1.7M | $2.7M | −$1.0M |
| Oct 2025 | $1.6M | $6.1M | −$4.5M |
| Sep 2025 | $2.1M | $3.6M | −$1.5M |
| Aug 2025 | $2.7M | $7.5M | −$4.8M |
| Jul 2025 | $2.4M | $10.3M | −$8.0M |
BESIX Assets Under Management
Net assets of William Blair Emerging Markets Small Cap Growth Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $422.64M |
| 2026-03-31 | $381.34M |
| 2025-12-31 | $367.97M |
| 2025-09-30 | $380.10M |
| 2025-06-30 | $369.69M |
| 2025-03-31 | $333.20M |
| 2024-12-31 | $398.40M |
| 2024-09-30 | $405.14M |
| 2024-06-30 | $408.79M |
| 2024-03-31 | $407.41M |
| 2023-12-31 | $389.64M |
| 2023-09-30 | $362.46M |
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.