William Blair Small Cap Growth Fund Class I (WBSIX)

NASDAQ · Mutual Fund · Delayed Price · Currency is USD
37.92
+0.25 (0.66%)
May 14, 2026, 4:00 PM EST
Fund Assets1.13B
Expense Ratio0.99%
Min. Investment$500,000
Turnover94.00%
Dividend (ttm)2.54
Dividend Yield6.72%
Dividend Growth-28.79%
Payout FrequencyAnnual
Ex-Dividend DateDec 18, 2025
Previous Close37.67
YTD Return11.25%
1-Year Return25.54%
5-Year Return47.99%
52-Week Low31.40
52-Week High38.11
Beta (5Y)1.10
Holdings95
Inception DateDec 27, 1999

About WBSIX

William Blair Small Cap Growth Fund Class I is an actively managed mutual fund focused on delivering long-term capital appreciation by investing primarily in equity securities of small-cap U.S. companies exhibiting strong growth potential. The fund targets firms at the lower end of the market-capitalization spectrum that demonstrate accelerated earnings, sales, or cash flow growth, often operating in emerging or rapidly evolving industries. This strategy results in a portfolio that tends to emphasize innovation-driven businesses and early-stage market leaders, spanning sectors such as industrials, healthcare, technology, and consumer goods. Designed for institutional investors, the fund maintains a diversified approach to help mitigate the inherent volatility associated with smaller, high-growth companies. By carefully selecting holdings based on quality and growth prospects, the fund aims to outperform standard small-cap growth benchmarks over time. With a sizable asset base and an expense structure positioned competitively within its peer group, William Blair Small Cap Growth Fund Class I plays a significant role as a potential engine of growth within a broader diversified investment portfolio, contributing exposure to dynamic segments of the equity market.

Fund Family William Blair
Category Small Growth
Performance Rating Above Average
Risk Rating Average
Stock Exchange NASDAQ
Ticker Symbol WBSIX
Share Class Class I
Index Russell 2000 Growth TR

Performance

WBSIX had a total return of 25.54% in the past year, including dividends. Since the fund's inception, the average annual return has been 12.35%.

Equivalent Funds

These are funds that follow the same index from the other major fund companies.

SymbolProviderNameExpense Ratio
VRTGXVanguardVanguard Russell 2000 Growth Index Fund Institutional Shares0.08%

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

SymbolShare ClassExpense Ratio
WBSRXClass R60.94%
WBSNXClass N1.24%

Top 10 Holdings

19.89% of assets
NameSymbolWeight
Fixed Inc Clearing Corp.Repon/a3.70%
Diebold Nixdorf, IncorporatedDBD2.44%
Twist Bioscience CorporationTWST2.14%
Balchem CorporationBCPC1.85%
Cognex CorporationCGNX1.72%
Marex Group plcMRX1.72%
Rush Street Interactive, Inc.RSI1.60%
Garrett Motion Inc.GTX1.60%
Regal Rexnord CorporationRRX1.58%
Globus Medical, Inc.GMED1.56%
View More Holdings

Dividend History

Ex-DividendAmountPay Date
Dec 18, 2025$2.5351Dec 19, 2025
Dec 19, 2024$3.55983Dec 20, 2024
Dec 14, 2023$0.49993Dec 15, 2023
Dec 15, 2022$1.01206Dec 16, 2022
Dec 16, 2021$6.69889Dec 17, 2021
Dec 17, 2020$3.83162Dec 18, 2020
Full Dividend History