Ostrum Asset Management’s Blackrock BLK Stock Holding History

Ostrum 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	$214K	Sell	222 -1,336	-86%	-$1.41M	0.01%	512
2025 Q4	$1.67M	Sell	1,558 -42	-3%	-$45.9K	0.08%	195
2025 Q3	$1.87M	Sell	1,600 -132	-8%	-$148K	0.08%	206
2025 Q2	$1.82M	Buy	1,732 +6	+0.3%	+$5.67K	0.09%	208
2025 Q1	$1.63M	Sell	1,726 -9	-0.5%	-$8.82K	0.09%	216
2024 Q4	$1.78M	Sell	1,735 -77	-4%	-$78.1K	0.15%	213
2024 Q3	$1.72M	Sell	1,812 -244	-12%	-$211K	0.14%	240
2024 Q2	$1.62M	Sell	2,056 -143	-7%	-$112K	0.14%	226
2024 Q1	$1.83M	Sell	2,199 -369	-14%	-$296K	0.14%	240
2023 Q4	$2.08M	Buy	2,568 +267	+12%	+$186K	0.18%	187
2023 Q3	$1.49M	Sell	2,301 -620	-21%	-$433K	0.14%	229
2023 Q2	$2.02M	Sell	2,921 -136	-4%	-$91.1K	0.17%	197
2023 Q1	$2.05M	Buy	+3,057	New	+$2.15M	0.18%	191

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

Ostrum Asset Management's BLK Position: Q1 2026 in Review

Ostrum Asset Management reduced its Blackrock (BLK) stake by 86% in Q1 2026, selling an estimated $1.41M and leaving 222 shares worth $214K. The position accounts for 0.01% of the portfolio, ranked #512.

Ostrum Asset Management first reported a position in BLK in Q1 2023 and has held it in 13 quarters since. The position peaked at $2.08M in Q4 2023. 2,319 funds tracked by Wall St. Rank hold BLK as of Q1 2026.

Ostrum Asset Management held 222 shares of Blackrock worth $214K as of Q1 2026.
Ostrum Asset Management sold 1,336 Blackrock shares in Q1 2026, an estimated $1.41M.
Blackrock made up 0.01% of Ostrum Asset Management's portfolio in Q1 2026, its #512 holding.
Ostrum Asset Management first reported a position in Blackrock in Q1 2023 and has held it in 13 quarters since.
Ostrum Asset Management's Blackrock position peaked at $2.08M in Q4 2023.
2,319 funds tracked by Wall St. Rank held Blackrock as of Q1 2026.

Based on Ostrum Asset Management's 13F filing for Q1 2026, filed 14 May 2026.