Rock Springs Capital Management’s Charles River Laboratories CRL Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-2,700	Closed	-$422K	–	104
2025 Q3	$422K	Hold	2,700	–	–	0.02%	87
2025 Q2	$410K	Buy	+2,700	New	+$360K	0.03%	88
2024 Q3	–	Sell	-60,250	Closed	-$12.4M	–	111
2024 Q2	$12.4M	Buy	60,250 +11,750	+24%	+$2.66M	0.37%	64
2024 Q1	$13.1M	Buy	+48,500	New	+$11.6M	0.33%	71
2014 Q3	–	Sell	-71,250	Closed	-$3.81M	–	85
2014 Q2	$3.81M	Buy	71,250 +21,750	+44%	+$1.19M	0.68%	55
2014 Q1	$2.99M	Buy	+49,500	New	+$2.89M	0.69%	46

Other funds holding CRL

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Allspring Global Investments Charlotte, North Carolina $65.2B AUM 39.42% 1-Year Est. Return

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

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

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

Harris Associates Chicago, Illinois $75.4B AUM 14.46% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return

Rock Springs Capital Management's CRL Position: Q4 2025 in Review

Rock Springs Capital Management sold out of Charles River Laboratories (CRL) in Q4 2025, closing a stake of 2,700 shares — an estimated $422K sold.

Rock Springs Capital Management first reported a position in CRL in Q1 2014 and held it in 6 quarters. The position peaked at $13.1M in Q1 2024. 582 funds tracked by Wall St. Rank hold CRL as of Q4 2025.

Rock Springs Capital Management reported no remaining Charles River Laboratories position as of Q4 2025 after selling out during the quarter.
Rock Springs Capital Management sold 2,700 Charles River Laboratories shares in Q4 2025, an estimated $422K.
Rock Springs Capital Management first reported a position in Charles River Laboratories in Q1 2014 and held it in 6 quarters.
Rock Springs Capital Management's Charles River Laboratories position peaked at $13.1M in Q1 2024.
582 funds tracked by Wall St. Rank held Charles River Laboratories as of Q4 2025.

Based on Rock Springs Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.