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John Overdeck’s Rubrik RBRK Stock Holding History

John Overdeck’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
2026
Q2 		$45M Sell
561,015
-1,752,229
-76% -$110M 0.03% 603
2026
Q1 		$113M Buy
2,313,244
+1,596,977
+223% +$91.7M 0.09% 241
2025
Q4 		$54.8M Buy
716,267
+657,267
+1,114% +$50.4M 0.08% 317
2025
Q3 		$4.85M Sell
59,000
-1,075,624
-95% -$92.5M 0.01% 1486
2025
Q2 		$102M Buy
1,134,624
+689,089
+155% +$54.5M 0.18% 150
2025
Q1 		$27.2M Sell
445,535
-203,814
-31% -$13.9M 0.06% 390
2024
Q4 		$42.4M Buy
649,349
+635,049
+4,441% +$31.4M 0.09% 265
2024
Q3 		$460K Hold
14,300
– – ﹤0.01% 2512
2024
Q2 		$438K Buy
+14,300
New +$470K ﹤0.01% 2426

Other funds holding RBRK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
VOYA Investment Management
VOYA Investment Management Atlanta, Georgia $116B AUM 61.47% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

John Overdeck's RBRK Position: Q2 2026 in Review

John Overdeck reduced its Rubrik (RBRK) stake by 76% in Q2 2026, selling an estimated $110M and leaving 561,015 shares worth $45M. The position accounts for 0.03% of the portfolio, ranked #603.

John Overdeck first reported a position in RBRK in Q2 2024 and has held it in 9 quarters since. The position peaked at $113M in Q1 2026. 569 funds tracked by Wall St. Rank hold RBRK as of Q2 2026.

  • John Overdeck held 561,015 shares of Rubrik worth $45M as of Q2 2026.
  • John Overdeck sold 1,752,229 Rubrik shares in Q2 2026, an estimated $110M.
  • Rubrik made up 0.03% of John Overdeck's portfolio in Q2 2026, its #603 holding.
  • John Overdeck first reported a position in Rubrik in Q2 2024 and has held it in 9 quarters since.
  • John Overdeck's Rubrik position peaked at $113M in Q1 2026.
  • 569 funds tracked by Wall St. Rank held Rubrik as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.