CSS LLC’s Rocket Lab Corp RKLB Stock Holding History

CSS LLC’s Portfolio RKLB Stock Details RKLB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$135K	Sell	2,100 -149,500	-99%	-$11.3M	0.01%	778
2025 Q4	$10.6M	Hold	151,600	–	–	0.47%	38
2025 Q3	$7.26M	Hold	151,600	–	–	0.33%	52
2025 Q2	$5.42M	Hold	151,600	–	–	0.25%	72
2025 Q1	$2.71M	Sell	151,600 -10,000	-6%	-$240K	0.15%	111
2024 Q4	$4.12M	Sell	161,600 -2,000	-1%	-$35.1K	0.18%	96
2024 Q3	$1.59M	Buy	163,600 +100	+0.1%	+$607	0.07%	194
2024 Q2	$785K	Buy	163,500 +49,600	+44%	+$207K	0.04%	350
2024 Q1	$468K	Buy	+113,900	New	+$526K	0.03%	465
2021 Q4	–	Sell	-400	Closed	-$6K	–	1313
2021 Q3	$6K	Buy	+400	New	+$4.81K	﹤0.01%	1158

Other funds holding RKLB

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

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

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

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Defiance ETFs New York $6.98B AUM

CSS LLC's RKLB Position: Q1 2026 in Review

CSS LLC reduced its Rocket Lab Corp (RKLB) stake by 92% in Q1 2026, selling an estimated $4.09M and leaving 4,927 shares worth $316K. The position accounts for 0.02% of the portfolio, ranked #640.

CSS LLC first reported a position in RKLB in Q1 2022 and has held it in 10 quarters since. The position peaked at $4.12M in Q4 2025. 872 funds tracked by Wall St. Rank hold RKLB as of Q1 2026.

CSS LLC held 4,927 shares of Rocket Lab Corp worth $316K as of Q1 2026.
CSS LLC sold 54,200 Rocket Lab Corp shares in Q1 2026, an estimated $4.09M.
Rocket Lab Corp made up 0.02% of CSS LLC's portfolio in Q1 2026, its #640 holding.
CSS LLC first reported a position in Rocket Lab Corp in Q1 2022 and has held it in 10 quarters since.
CSS LLC's Rocket Lab Corp position peaked at $4.12M in Q4 2025.
872 funds tracked by Wall St. Rank held Rocket Lab Corp as of Q1 2026.

Based on CSS LLC's 13F filing for Q1 2026, filed 15 May 2026.