Mariner
RBRK icon

Mariner’s Rubrik RBRK Stock Holding History

Mariner’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 		$25.5M Buy
317,774
+263,784
+489% +$16.6M 0.03% 423
2026
Q1 		$2.64M Buy
53,990
+22,733
+73% +$1.3M ﹤0.01% 1380
2025
Q4 		$2.39M Buy
31,257
+18,158
+139% +$1.39M ﹤0.01% 1396
2025
Q3 		$1.08M Buy
13,099
+10,041
+328% +$863K ﹤0.01% 1846
2025
Q2 		$274K Buy
+3,058
New +$242K ﹤0.01% 2791

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

Mariner's RBRK Position: Q2 2026 in Review

Mariner increased its Rubrik (RBRK) stake by 489% in Q2 2026, buying an estimated $16.6M and bringing the position to 317,774 shares worth $25.5M. The position accounts for 0.03% of the portfolio, ranked #423.

Mariner first reported a position in RBRK in Q2 2025 and has held it in 5 quarters since. 574 funds tracked by Wall St. Rank hold RBRK as of Q2 2026.

  • Mariner held 317,774 shares of Rubrik worth $25.5M as of Q2 2026.
  • Mariner bought 263,784 Rubrik shares in Q2 2026, an estimated $16.6M.
  • Rubrik made up 0.03% of Mariner's portfolio in Q2 2026, its #423 holding.
  • Mariner first reported a position in Rubrik in Q2 2025 and has held it in 5 quarters since.
  • 574 funds tracked by Wall St. Rank held Rubrik as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.