Jim Simons
RBRK icon

Jim Simons’s Rubrik RBRK Stock Holding History

Jim Simons’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
Q1 		$18.5M Sell
377,489
-345,900
-48% -$19.9M 0.03% 683
2025
Q4 		$55.3M Sell
723,389
-84,311
-10% -$6.47M 0.09% 264
2025
Q3 		$66.4M Sell
807,700
-410,300
-34% -$35.3M 0.09% 256
2025
Q2 		$109M Sell
1,218,000
-163,400
-12% -$12.9M 0.15% 145
2025
Q1 		$84.2M Buy
1,381,400
+394,100
+40% +$26.9M 0.13% 193
2024
Q4 		$64.5M Buy
+987,300
New +$48.8M 0.1% 245

Other funds holding RBRK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
VOYA Investment Management
VOYA Investment Management Atlanta, Georgia $96.1B AUM 40.06% 1-Year Est. Return
PC
PointState Capital New York $7.9B AUM 42.31% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Jim Simons's RBRK Position: Q1 2026 in Review

Jim Simons reduced its Rubrik (RBRK) stake by 48% in Q1 2026, selling an estimated $19.9M and leaving 377,489 shares worth $18.5M. The position accounts for 0.03% of the portfolio, ranked #683.

Jim Simons first reported a position in RBRK in Q4 2024 and has held it in 6 quarters since. The position peaked at $109M in Q2 2025. 463 funds tracked by Wall St. Rank hold RBRK as of Q1 2026.

  • Jim Simons held 377,489 shares of Rubrik worth $18.5M as of Q1 2026.
  • Jim Simons sold 345,900 Rubrik shares in Q1 2026, an estimated $19.9M.
  • Rubrik made up 0.03% of Jim Simons's portfolio in Q1 2026, its #683 holding.
  • Jim Simons first reported a position in Rubrik in Q4 2024 and has held it in 6 quarters since.
  • Jim Simons's Rubrik position peaked at $109M in Q2 2025.
  • 463 funds tracked by Wall St. Rank held Rubrik as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.