William Blair & Company’s State Street SPDR S&P 500 ETF Trust SPY Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q2	–	Sell	-500	Closed	-$141K	–	1768
2019 Q1	$141K	Hold	500	–	–	﹤0.01%	1360
2018 Q4	$125K	Hold	500	–	–	﹤0.01%	1292
2018 Q3	$145K	Hold	500	–	–	﹤0.01%	1335
2018 Q2	$136K	Hold	500	–	–	﹤0.01%	1316
2018 Q1	$132K	Hold	500	–	–	﹤0.01%	1242
2017 Q4	$133K	Hold	500	–	–	﹤0.01%	1302
2017 Q3	$126K	Buy	+500	New	+$123K	﹤0.01%	1297
2016 Q2	–	Sell	-2,000	Closed	-$411K	–	1270
2016 Q1	$411K	Buy	+2,000	New	+$390K	﹤0.01%	844
2014 Q2	–	Sell	-4,000	Closed	-$748K	–	2114
2014 Q1	$748K	Buy	+4,000	New	+$734K	﹤0.01%	1498

Other funds holding SPY

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return

Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return

William Blair & Company's SPY Position: Q1 2026 in Review

William Blair & Company reduced its State Street SPDR S&P 500 ETF Trust (SPY) stake by 1.5% in Q1 2026, selling an estimated $8.5M and leaving 845,294 shares worth $550M. The position accounts for 1.58% of the portfolio, ranked #10.

William Blair & Company first reported a position in SPY in Q2 2013 and has held it in 52 quarters since. The position peaked at $585M in Q4 2025. 4,558 funds tracked by Wall St. Rank hold SPY as of Q1 2026.

William Blair & Company held 845,294 shares of State Street SPDR S&P 500 ETF Trust worth $550M as of Q1 2026.
William Blair & Company sold 12,509 State Street SPDR S&P 500 ETF Trust shares in Q1 2026, an estimated $8.5M.
State Street SPDR S&P 500 ETF Trust made up 1.58% of William Blair & Company's portfolio in Q1 2026, its #10 holding.
William Blair & Company first reported a position in State Street SPDR S&P 500 ETF Trust in Q2 2013 and has held it in 52 quarters since.
William Blair & Company's State Street SPDR S&P 500 ETF Trust position peaked at $585M in Q4 2025.
4,558 funds tracked by Wall St. Rank held State Street SPDR S&P 500 ETF Trust as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.