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Osterweis Capital Management’s Rubrik RBRK Stock Holding History

Osterweis Capital Management’s Portfolio RBRK Stock Details RBRK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-76,005
Closed -$6.25M – 320
2025
Q3 		$6.25M Sell
76,005
-1,180
-2% -$101K 0.28% 78
2025
Q2 		$6.92M Buy
+77,185
New +$6.1M 0.33% 72

Other funds holding RBRK

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $935B AUM
VOYA Investment Management
VOYA Investment Management Atlanta, Georgia $96.1B AUM 40.06% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
PC
PointState Capital New York $7.9B AUM 42.31% 1-Year Est. Return

Osterweis Capital Management's RBRK Position: Q4 2025 in Review

Osterweis Capital Management sold out of Rubrik (RBRK) in Q4 2025, closing a stake of 76,005 shares — an estimated $6.25M sold.

Osterweis Capital Management first reported a position in RBRK in Q2 2025 and held it in 2 quarters. The position peaked at $6.92M in Q2 2025. 473 funds tracked by Wall St. Rank hold RBRK as of Q4 2025.

  • Osterweis Capital Management reported no remaining Rubrik position as of Q4 2025 after selling out during the quarter.
  • Osterweis Capital Management sold 76,005 Rubrik shares in Q4 2025, an estimated $6.25M.
  • Osterweis Capital Management first reported a position in Rubrik in Q2 2025 and held it in 2 quarters.
  • Osterweis Capital Management's Rubrik position peaked at $6.92M in Q2 2025.
  • 473 funds tracked by Wall St. Rank held Rubrik as of Q4 2025.

Based on Osterweis Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.