MAM
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Mainsail Asset Management’s Blackrock BLK Stock Holding History

Mainsail 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 		$252K Buy
262
+68
+35% +$71.5K 0.11% 83
2025
Q4 		$208K Buy
+194
New +$212K 0.09% 98

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

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

Mainsail Asset Management increased its Blackrock (BLK) stake by 35% in Q1 2026, buying an estimated $71.5K and bringing the position to 262 shares worth $252K. The position accounts for 0.11% of the portfolio, ranked #83.

Mainsail Asset Management first reported a position in BLK in Q4 2025 and has held it in 2 quarters since. 2,320 funds tracked by Wall St. Rank hold BLK as of Q1 2026.

  • Mainsail Asset Management held 262 shares of Blackrock worth $252K as of Q1 2026.
  • Mainsail Asset Management bought 68 Blackrock shares in Q1 2026, an estimated $71.5K.
  • Blackrock made up 0.11% of Mainsail Asset Management's portfolio in Q1 2026, its #83 holding.
  • Mainsail Asset Management first reported a position in Blackrock in Q4 2025 and has held it in 2 quarters since.
  • 2,320 funds tracked by Wall St. Rank held Blackrock as of Q1 2026.

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