Citadel Advisors’s Rubrik RBRK Stock Holding History

Citadel Advisors’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	$7.75M	Sell	158,200 -64,500	-29%	-$3.7M	﹤0.01%	3629
2025 Q4	$17M	Sell	222,700 -363,600	-62%	-$27.9M	﹤0.01%	2555
2025 Q3	$48.2M	Buy	586,300 +131,500	+29%	+$11.3M	0.01%	1416
2025 Q2	$40.7M	Buy	454,800 +289,100	+174%	+$22.9M	0.01%	1399
2025 Q1	$10.1M	Buy	165,700 +14,500	+10%	+$990K	﹤0.01%	2844
2024 Q4	$9.88M	Sell	151,200 -177,300	-54%	-$8.76M	﹤0.01%	3002
2024 Q3	$10.6M	Buy	328,500 +291,000	+776%	+$9.64M	﹤0.01%	2815
2024 Q2	$1.15M	Buy	+37,500	New	+$1.23M	﹤0.01%	6315

Other funds holding RBRK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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 Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

VOYA Investment Management Atlanta, Georgia $96.1B AUM 40.06% 1-Year Est. Return

PointState Capital New York $7.9B AUM 42.31% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $94.8B AUM 24.11% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Citadel Advisors's RBRK Position: Q1 2026 in Review

Citadel Advisors increased its Rubrik (RBRK) stake by 27% in Q1 2026, buying an estimated $8.92M and bringing the position to 731,217 shares worth $35.8M. The position accounts for 0.01% of the portfolio, ranked #1676.

Citadel Advisors first reported a position in RBRK in Q2 2024 and has held it in 8 quarters since. The position peaked at $220M in Q3 2025. 462 funds tracked by Wall St. Rank hold RBRK as of Q1 2026.

Citadel Advisors held 731,217 shares of Rubrik worth $35.8M as of Q1 2026.
Citadel Advisors bought 155,344 Rubrik shares in Q1 2026, an estimated $8.92M.
Rubrik made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #1676 holding.
Citadel Advisors first reported a position in Rubrik in Q2 2024 and has held it in 8 quarters since.
Citadel Advisors's Rubrik position peaked at $220M in Q3 2025.
462 funds tracked by Wall St. Rank held Rubrik as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.