Rock Springs Capital Management’s LENZ Therapeutics LENZ Stock Holding History

Rock Springs Capital Management’s Portfolio LENZ Stock Details LENZ Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.46M	Hold	257,460	–	–	0.07%	93
2026 Q1	$2.36M	Hold	257,460	–	–	0.14%	85
2025 Q4	$4.12M	Buy	257,460 +21,233	+9%	+$619K	0.21%	77
2025 Q3	$11M	Buy	236,227 +152,245	+181%	+$5.6M	0.64%	50
2025 Q2	$2.46M	Buy	83,982 +900	+1%	+$24.5K	0.15%	75
2025 Q1	$2.14M	Buy	83,082 +53,777	+184%	+$1.32M	0.12%	78
2024 Q4	$846K	Buy	+29,305	New	+$893K	0.03%	100
2022 Q2	–	Sell	-255,822	Closed	-$9.13M	–	139
2022 Q1	$9.13M	Sell	255,822 -41,165	-14%	-$2.58M	0.23%	84
2021 Q4	$25.8M	Buy	296,987 +314	+0.1%	+$26K	0.6%	53
2021 Q3	$34M	Sell	296,673 -10,718	-3%	-$1.59M	0.72%	47
2021 Q2	$66.1M	Buy	+307,391	New	+$53.5M	1.31%	21

Other funds holding LENZ

RCM

RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return

AWG

Alpha Wave Global New York $6.24B AUM 59.73% 1-Year Est. Return

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

VVM

Versant Venture Management San Francisco, California $163M AUM 240.43% 1-Year Est. Return

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

Squarepoint New York $90.5B AUM 33.95% 1-Year Est. Return

Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

7IH

72 Investment Holdings Stamford, Connecticut $50M AUM 647.58% 1-Year Est. Return

Rock Springs Capital Management's LENZ Position: Q2 2026 in Review

Rock Springs Capital Management held its LENZ Therapeutics (LENZ) position steady in Q2 2026 at 257,460 shares worth $1.46M. The position accounts for 0.07% of the portfolio, ranked #93.

Rock Springs Capital Management first reported a position in LENZ in Q2 2021 and has held it in 11 quarters since. The position peaked at $66.1M in Q2 2021. 144 funds tracked by Wall St. Rank hold LENZ as of Q2 2026.

Rock Springs Capital Management held 257,460 shares of LENZ Therapeutics worth $1.46M as of Q2 2026.
Rock Springs Capital Management left its LENZ Therapeutics share count unchanged in Q2 2026.
LENZ Therapeutics made up 0.07% of Rock Springs Capital Management's portfolio in Q2 2026, its #93 holding.
Rock Springs Capital Management first reported a position in LENZ Therapeutics in Q2 2021 and has held it in 11 quarters since.
Rock Springs Capital Management's LENZ Therapeutics position peaked at $66.1M in Q2 2021.
144 funds tracked by Wall St. Rank held LENZ Therapeutics as of Q2 2026.

Based on Rock Springs Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.