Summit Partners Public Asset Management’s Rubrik RBRK Stock Holding History

Summit Partners Public Asset Management’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	–	Sell	-80,000	Closed	-$6.12M	–	207
2025 Q4	$6.12M	Sell	80,000 -120,000	-60%	-$9.21M	0.13%	102
2025 Q3	$16.4M	Buy	200,000 +160,000	+400%	+$13.8M	0.34%	78
2025 Q2	$3.58M	Sell	40,000 -35,000	-47%	-$2.77M	0.09%	117
2025 Q1	$4.57M	Buy	+75,000	New	+$5.12M	0.12%	119

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 $105B AUM 38.07% 1-Year Est. Return

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

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Summit Partners Public Asset Management's RBRK Position: Q1 2026 in Review

Summit Partners Public Asset Management reduced its Rubrik (RBRK) stake by 80% in Q1 2026, selling an estimated $45.1M and leaving 200,000 shares worth $9.79M. The position accounts for 0.26% of the portfolio, ranked #91.

Summit Partners Public Asset Management first reported a position in RBRK in Q3 2024 and has held it in 7 quarters since. The position peaked at $89.1M in Q2 2025. 463 funds tracked by Wall St. Rank hold RBRK as of Q1 2026.

Summit Partners Public Asset Management held 200,000 shares of Rubrik worth $9.79M as of Q1 2026.
Summit Partners Public Asset Management sold 785,000 Rubrik shares in Q1 2026, an estimated $45.1M.
Rubrik made up 0.26% of Summit Partners Public Asset Management's portfolio in Q1 2026, its #91 holding.
Summit Partners Public Asset Management first reported a position in Rubrik in Q3 2024 and has held it in 7 quarters since.
Summit Partners Public Asset Management's Rubrik position peaked at $89.1M in Q2 2025.
463 funds tracked by Wall St. Rank held Rubrik as of Q1 2026.

Based on Summit Partners Public Asset Management's 13F filing for Q1 2026, filed 15 May 2026.