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Rossby Financial’s Blackrock BLK Stock Holding History

Rossby Financial’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 		$91.1K Buy
95
+25
+36% +$26.3K 0.02% 562
2025
Q4 		$74.9K Buy
70
+18
+35% +$19.7K 0.02% 465
2025
Q3 		$59.3K Buy
52
+15
+41% +$16.8K 0.02% 507
2025
Q2 		$38.8K Buy
37
+11
+42% +$10.4K 0.01% 539
2025
Q1 		$23.6K Buy
+26
New +$25.5K 0.01% 589

Other funds holding BLK

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Temasek Holdings
Temasek Holdings Singapore $30.5B AUM 13.98% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Rossby Financial's BLK Position: Q1 2026 in Review

Rossby Financial increased its Blackrock (BLK) stake by 36% in Q1 2026, buying an estimated $26.3K and bringing the position to 95 shares worth $91.1K. The position accounts for 0.02% of the portfolio, ranked #562.

Rossby Financial first reported a position in BLK in Q1 2025 and has held it in 5 quarters since. 2,320 funds tracked by Wall St. Rank hold BLK as of Q1 2026.

  • Rossby Financial held 95 shares of Blackrock worth $91.1K as of Q1 2026.
  • Rossby Financial bought 25 Blackrock shares in Q1 2026, an estimated $26.3K.
  • Blackrock made up 0.02% of Rossby Financial's portfolio in Q1 2026, its #562 holding.
  • Rossby Financial first reported a position in Blackrock in Q1 2025 and has held it in 5 quarters since.
  • 2,320 funds tracked by Wall St. Rank held Blackrock as of Q1 2026.

Based on Rossby Financial's 13F filing for Q1 2026, filed 11 May 2026.