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Osterweis Capital Management’s Blackrock BLK Stock Holding History

Osterweis Capital 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
Q2 		$59.6K Hold
62
– – ﹤0.01% 183
2026
Q1 		$59.6K Sell
62
-11
-15% -$11.6K ﹤0.01% 186
2025
Q4 		$78.1K Sell
73
-20
-22% -$21.9K ﹤0.01% 185
2025
Q3 		$108K Hold
93
– – ﹤0.01% 165
2025
Q2 		$97.6K Buy
+93
New +$87.9K ﹤0.01% 178

Other funds holding BLK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Temasek Holdings
Temasek Holdings Singapore $37.3B AUM 12.6% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Osterweis Capital Management's BLK Position: Q2 2026 in Review

Osterweis Capital Management held its Blackrock (BLK) position steady in Q2 2026 at 62 shares worth $59.6K. The position accounts for ﹤0.01% of the portfolio, ranked #183.

Osterweis Capital Management first reported a position in BLK in Q2 2025 and has held it in 5 quarters since. The position peaked at $108K in Q3 2025. 2,322 funds tracked by Wall St. Rank hold BLK as of Q2 2026.

  • Osterweis Capital Management held 62 shares of Blackrock worth $59.6K as of Q2 2026.
  • Osterweis Capital Management left its Blackrock share count unchanged in Q2 2026.
  • Blackrock made up ﹤0.01% of Osterweis Capital Management's portfolio in Q2 2026, its #183 holding.
  • Osterweis Capital Management first reported a position in Blackrock in Q2 2025 and has held it in 5 quarters since.
  • Osterweis Capital Management's Blackrock position peaked at $108K in Q3 2025.
  • 2,322 funds tracked by Wall St. Rank held Blackrock as of Q2 2026.

Based on Osterweis Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.