William Blair Small-Mid Cap Core Fund Class I (WBCIX)

Fund Assets	234.00M
Expense Ratio	0.978%
Min. Investment	$500,000
Turnover	81.00%
Dividend (ttm)	n/a
Dividend Yield	n/a
Dividend Growth	n/a
Payout Frequency	Annual
Ex-Dividend Date	Dec 18, 2025

Previous Close	18.03
YTD Return	9.51%
1-Year Return	10.77%
5-Year Return	12.51%
52-Week Low	15.84
52-Week High	19.93
Beta (5Y)	1.04
Holdings	97
Inception Date	Oct 1, 2019

About WBCIX

The William Blair Small-Mid Cap Core Fund Class I is a mutual fund designed to provide long-term capital appreciation by investing primarily in equity securities of small- and mid-capitalization U.S. companies. The fund targets businesses deemed to possess strong fundamentals, enduring competitive advantages, and the potential for durable returns, focusing on quality companies within its capitalization range. Managed by the experienced team at William Blair, the fund maintains a diversified portfolio, typically holding stocks across multiple sectors to mitigate risk and enhance growth potential. The fund's strategy emphasizes assessing business quality, growth prospects, and prudent risk management, making it relevant for investors seeking exposure to dynamic segments of the U.S. equity market. With a disciplined approach and focus on fundamental research, the fund aims to capture opportunities in small- and mid-cap spaces, which can be key drivers of innovation and economic expansion in the broader market.

• Fund Family: William Blair
• Category: Small Blend
• Performance Rating: Below Average
• Risk Rating: Below Average
• Stock Exchange: Nasdaq
• Ticker Symbol: WBCIX
• Share Class: Class I
• Index: Russell 2500 TR

Performance

WBCIX had a total return of 10.77% in the past year, including dividends. Since the fund's inception, the average annual return has been 9.98%.

Other Share Classes

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

Symbol	Share Class	Expense Ratio
WBCRX	Class R6	0.90%

Top 10 Holdings

17.75% of assets

Name	Symbol	Weight
Everpure, Inc.	P	2.05%
BorgWarner Inc.	BWA	1.97%
Talen Energy Corporation	TLN	1.87%
Repligen Corporation	RGEN	1.86%
Everest Group, Ltd.	EG	1.83%
Dynatrace, Inc.	DT	1.69%
Banner Corporation	BANR	1.66%
Elastic N.V.	ESTC	1.63%
Twist Bioscience Corporation	TWST	1.61%
TPG Inc.	TPG	1.60%

Dividend History

Ex-Dividend	Amount	Pay Date
Dec 18, 2025	$0.49609	Dec 19, 2025
Dec 19, 2024	$0.22794	Dec 20, 2024
Dec 14, 2023	$0.0224	Dec 15, 2023
Dec 12, 2019	$0.00658	Dec 13, 2019

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Nov 9, 2026

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