William Blair & Company’s ProShares UltraPro S&P 500 UPRO Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$97K	Sell	1,000 -200	-17%	-$22.6K	﹤0.01%	1593
2025 Q4	$139K	Sell	1,200 -322	-21%	-$36.8K	﹤0.01%	1522
2025 Q3	$170K	Hold	1,522	–	–	﹤0.01%	1490
2025 Q2	$139K	Hold	1,522	–	–	﹤0.01%	1473
2025 Q1	$112K	Hold	1,522	–	–	﹤0.01%	1484
2024 Q4	$135K	Buy	+1,522	New	+$139K	﹤0.01%	1501
2024 Q1	–	Sell	-9	Closed	-$510	–	1852
2023 Q4	$510	Hold	9	–	–	﹤0.01%	1777
2023 Q3	$383	Hold	9	–	–	﹤0.01%	1781
2023 Q2	$440	Sell	9 -9	-50%	-$367	﹤0.01%	1799
2023 Q1	$706	Hold	18	–	–	﹤0.01%	1792
2022 Q4	$600	Hold	18	–	–	﹤0.01%	1804
2022 Q3	$1K	Hold	18	–	–	﹤0.01%	1813
2022 Q2	$1K	Hold	18	–	–	﹤0.01%	1855
2022 Q1	$1K	Buy	+18	New	+$1.12K	﹤0.01%	1903
2021 Q2	–	Sell	-250	Closed	-$11K	–	1934
2021 Q1	$11K	Hold	250	–	–	﹤0.01%	1781
2020 Q4	$10K	Hold	250	–	–	﹤0.01%	1746
2020 Q3	$7K	Hold	250	–	–	﹤0.01%	1653
2020 Q2	$6K	Hold	250	–	–	﹤0.01%	1619
2020 Q1	$3K	Buy	+250	New	+$7.46K	﹤0.01%	1615

Other funds holding UPRO

RAM

Revere Asset Management Dallas, Texas $195M AUM 80.44% 1-Year Est. Return

RCM

Ridgepath Capital Management Knoxville, Tennessee $201M AUM 10.5% 1-Year Est. Return

SFA

Spectrum Financial Alliance Nicholasville, Kentucky $520M AUM 48.03% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return

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

FTUS

Flow Traders U.S. New York $3.16B AUM 19.52% 1-Year Est. Return

MSG

Main Street Group Glen Allen, Virginia $429M AUM 34.03% 1-Year Est. Return

Diversified Trust Memphis, Tennessee $6.24B AUM 28.78% 1-Year Est. Return

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

MFA

Millington Financial Advisors Naperville, Illinois $237M AUM 22.22% 1-Year Est. Return

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

William Blair & Company reduced its ProShares UltraPro S&P 500 (UPRO) stake by 17% in Q1 2026, selling an estimated $22.6K and leaving 1,000 shares worth $97K. The position accounts for ﹤0.01% of the portfolio, ranked #1593.

William Blair & Company first reported a position in UPRO in Q1 2020 and has held it in 19 quarters since. The position peaked at $170K in Q3 2025. 120 funds tracked by Wall St. Rank hold UPRO as of Q1 2026.

William Blair & Company held 1,000 shares of ProShares UltraPro S&P 500 worth $97K as of Q1 2026.
William Blair & Company sold 200 ProShares UltraPro S&P 500 shares in Q1 2026, an estimated $22.6K.
ProShares UltraPro S&P 500 made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1593 holding.
William Blair & Company first reported a position in ProShares UltraPro S&P 500 in Q1 2020 and has held it in 19 quarters since.
William Blair & Company's ProShares UltraPro S&P 500 position peaked at $170K in Q3 2025.
120 funds tracked by Wall St. Rank held ProShares UltraPro S&P 500 as of Q1 2026.

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