William Blair & Company’s Butterfly Network BFLY Stock Holding History

William Blair & Company’s Portfolio BFLY Stock Details BFLY Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$99.7K	Sell	11,843 -67,657	-85%	-$350K	﹤0.01%	1685
2026 Q1	$321K	Sell	79,500 -50,000	-39%	-$193K	﹤0.01%	1308
2025 Q4	$492K	Buy	129,500 +1,000	+0.8%	+$2.72K	﹤0.01%	1154
2025 Q3	$248K	Buy	128,500 +10,000	+8%	+$17K	﹤0.01%	1381
2025 Q2	$237K	Buy	118,500 +15,000	+14%	+$34.4K	﹤0.01%	1352
2025 Q1	$236K	Buy	103,500 +30,000	+41%	+$107K	﹤0.01%	1338
2024 Q4	$229K	Buy	73,500 +35,200	+92%	+$91.6K	﹤0.01%	1394
2024 Q3	$67.8K	Buy	+38,300	New	+$47.9K	﹤0.01%	1591
2021 Q2	–	Sell	-18,767	Closed	-$316K	–	1893
2021 Q1	$316K	Buy	+18,767	New	+$371K	﹤0.01%	1310

Other funds holding BFLY

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

GCM

Glenview Capital Management New York $5.49B AUM 46.89% 1-Year Est. Return

HRCM

Hood River Capital Management Palm Beach Gardens, Florida $13.8B AUM 163.97% 1-Year Est. Return

Fosun International Hong Kong, China $446M AUM 13.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

AIM

ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return

Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

William Blair & Company's BFLY Position: Q2 2026 in Review

William Blair & Company reduced its Butterfly Network (BFLY) stake by 85% in Q2 2026, selling an estimated $350K and leaving 11,843 shares worth $99.7K. The position accounts for ﹤0.01% of the portfolio, ranked #1685.

William Blair & Company first reported a position in BFLY in Q1 2021 and has held it in 9 quarters since. The position peaked at $492K in Q4 2025. 245 funds tracked by Wall St. Rank hold BFLY as of Q2 2026.

William Blair & Company held 11,843 shares of Butterfly Network worth $99.7K as of Q2 2026.
William Blair & Company sold 67,657 Butterfly Network shares in Q2 2026, an estimated $350K.
Butterfly Network made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1685 holding.
William Blair & Company first reported a position in Butterfly Network in Q1 2021 and has held it in 9 quarters since.
William Blair & Company's Butterfly Network position peaked at $492K in Q4 2025.
245 funds tracked by Wall St. Rank held Butterfly Network as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.