One River Asset Management’s Blackrock BLK Stock Holding History

One River Asset Management’s Portfolio BLK Stock Details BLK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.54M	Buy	1,600 +1,300	+433%	+$1.37M	0.56%	40
2025 Q4	$321K	Buy	+300	New	+$328K	0.03%	161
2025 Q1	–	Sell	-900	Closed	-$923K	–	108
2024 Q4	$923K	Sell	900 -100	-10%	-$101K	0.08%	95
2024 Q3	$950K	Sell	1,000 -200	-17%	-$173K	0.12%	83
2024 Q2	$945K	Sell	1,200 -1,300	-52%	-$1.01M	0.07%	107
2024 Q1	$2.08M	Sell	2,500 -8,200	-77%	-$6.59M	0.05%	144
2023 Q4	$8.69M	Buy	10,700 +500	+5%	+$349K	0.2%	98
2023 Q3	$6.59M	Buy	10,200 +10,100	+10,100%	+$7.05M	0.2%	100
2023 Q2	$69.1K	Sell	100 -3,600	-97%	-$2.41M	0.01%	259
2023 Q1	$2.48M	Sell	3,700 -300	-8%	-$211K	0.11%	134
2022 Q4	$2.83M	Buy	+4,000	New	+$2.67M	0.17%	122

Other funds holding BLK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Temasek Holdings Singapore $30.5B AUM 13.98% 1-Year Est. Return

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

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

One River Asset Management's BLK Position: Q1 2026 in Review

One River Asset Management increased its Blackrock (BLK) stake by 1,002% in Q1 2026, buying an estimated $590K and bringing the position to 617 shares worth $593K. The position accounts for 0.22% of the portfolio, ranked #113.

One River Asset Management first reported a position in BLK in Q1 2023 and has held it in 6 quarters since. The position peaked at $1.95M in Q3 2023. 2,320 funds tracked by Wall St. Rank hold BLK as of Q1 2026.

One River Asset Management held 617 shares of Blackrock worth $593K as of Q1 2026.
One River Asset Management bought 561 Blackrock shares in Q1 2026, an estimated $590K.
Blackrock made up 0.22% of One River Asset Management's portfolio in Q1 2026, its #113 holding.
One River Asset Management first reported a position in Blackrock in Q1 2023 and has held it in 6 quarters since.
One River Asset Management's Blackrock position peaked at $1.95M in Q3 2023.
2,320 funds tracked by Wall St. Rank held Blackrock as of Q1 2026.

Based on One River Asset Management's 13F filing for Q1 2026, filed 27 Apr 2026.