PEAK6’s Rubrik RBRK Stock Holding History

PEAK6’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	$6.95M	Buy	86,600 +36,600	+73%	+$2.3M	0.01%	714
2026 Q1	$2.45M	Buy	50,000 +44,800	+862%	+$2.57M	0.01%	1275
2025 Q4	$398K	Sell	5,200 -94,800	-95%	-$7.27M	﹤0.01%	2188
2025 Q3	$8.22M	Sell	100,000 -5,100	-5%	-$438K	0.01%	783
2025 Q2	$9.42M	Buy	105,100 +99,800	+1,883%	+$7.89M	0.02%	652
2025 Q1	$323K	Buy	+5,300	New	+$362K	﹤0.01%	2251

Other funds holding RBRK

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

VOYA Investment Management Atlanta, Georgia $116B AUM 61.47% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

PEAK6's RBRK Position: Q2 2026 in Review

PEAK6 sold out of Rubrik (RBRK) in Q2 2026, closing a stake of 27,373 shares — an estimated $1.72M sold.

PEAK6 first reported a position in RBRK in Q2 2025 and held it in 2 quarters. The position peaked at $1.34M in Q1 2026. 575 funds tracked by Wall St. Rank hold RBRK as of Q2 2026.

PEAK6 reported no remaining Rubrik position as of Q2 2026 after selling out during the quarter.
PEAK6 sold 27,373 Rubrik shares in Q2 2026, an estimated $1.72M.
PEAK6 first reported a position in Rubrik in Q2 2025 and held it in 2 quarters.
PEAK6's Rubrik position peaked at $1.34M in Q1 2026.
575 funds tracked by Wall St. Rank held Rubrik as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.