C000027837 Performance — William Blair Mid Cap Growth Fund, Class I

Data updated: 2023-05-24

C000027837 returned −8.47% over one year to Mar 2023. The annualised 3-year return is +11.08%. Against its US Mid-Cap Growth category average the fund came out behind over three years but ahead over one: $100 invested three years ago grew to $137, against $148 for the category, and to $92 over one year, against $89. Volatility over the past three years was 23.44% a year. In the 12 months to Mar 2023 the fund took in a net $3.8M, and assets reached $33.51M.

C000027837 Growth of $100

What $100 invested in William Blair Mid 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.

PeriodC000027837Category average
1 year (Apr 2022 – Mar 2023)$92$89
3 years (Apr 2020 – Mar 2023)$137$148
Since data start (Jul 2019 – Mar 2023)$117$127

C000027837 Trailing Returns

Total returns to Mar 2023, from SEC N-PORT.

PeriodTotal return
1 year−8.47%
3 years (annualised)+11.08%

C000027837 Annual Returns

Calendar-year total returns of William Blair Mid Cap Growth Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.

YearTotal return
2023 (Jan–Mar)+8.72%
2022−26.72%
2021+8.38%
2020+27.19%
2019 (Jul–Dec)+6.86%

C000027837 Monthly Returns

Monthly total returns as reported on SEC Form N-PORT.

YearJanFebMarAprMayJunJulAugSepOctNovDec
2023+10.5%−2.2%+0.6%—————————
2022−13.2%−2.6%+2.9%−12.1%−3.9%−7.4%+12.6%−5.1%−10.4%+7.1%+10.3%−4.9%
2021−2.8%+2.5%−1.4%+5.0%−2.5%+3.2%+2.1%+2.5%−4.1%+6.7%−5.4%+3.3%
2020+1.9%−7.4%−15.1%+12.1%+10.1%−0.1%+5.4%+4.3%−0.9%−0.9%+11.7%+6.7%
2019——————+2.4%−2.1%+0.1%+0.2%+3.8%+2.3%

C000027837 Risk

Risk measures from monthly returns over Apr 2020 – Mar 2023.

  • 3-year volatility (annualised): 23.44%
  • 3-year Sharpe ratio: 0.28 (vs 4.5% risk-free rate)
  • Best month: +12.63% (Jul 2022)
  • Worst month: −13.16% (Jan 2022)

C000027837 Fund Flows

Monthly money in and out of William Blair Mid Cap Growth Fund, from SEC Form N-PORT.

  • 12-month net flow: $3.8M
  • 12-month gross sales (incl. reinvestments): $15.5M
  • Sales ÷ redemptions: 1.32×
MonthSalesRedemptionsNet flow
Mar 2023$134K$258K−$124K
Feb 2023$490K$530K−$40K
Jan 2023$89K$1.7M−$1.6M
Dec 2022$11.6M$2.3M$9.3M
Nov 2022$340K$529K−$189K
Oct 2022$237K$306K−$69K
Sep 2022$284K$1.1M−$804K
Aug 2022$143K$1.6M−$1.5M
Jul 2022$279K$1.8M−$1.5M
Jun 2022$243K$198K$45K
May 2022$1.1M$722K$365K
Apr 2022$594K$670K−$76K

C000027837 Assets Under Management

Net assets of William Blair Mid Cap Growth Fund by report date, from SEC N-PORT filings.

Report dateNet assets
2023-03-31$33.51M
2022-12-31$32.51M
2022-09-30$30.45M
2022-06-30$35.31M
2022-03-31$44.76M
2021-12-31$52.86M
2021-09-30$86.80M
2021-06-30$85.99M
2021-03-31$82.29M
2020-12-31$83.93M
2020-09-30$72.70M
2020-06-30$70.98M

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.