Rock Springs Capital Management’s Perspective Therapeutics CATX Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-444,383	Closed	-$1.52M	–	102
2025 Q3	$1.52M	Hold	444,383	–	–	0.09%	81
2025 Q2	$1.53M	Hold	444,383	–	–	0.1%	81
2025 Q1	$947K	Hold	444,383	–	–	0.05%	89
2024 Q4	$1.42M	Buy	444,383 +29,987	+7%	+$245K	0.05%	95
2024 Q3	$5.53M	Buy	414,396 +13,200	+3%	+$176K	0.18%	84
2024 Q2	$4M	Buy	+401,196	New	+$5.8M	0.12%	91

Other funds holding CATX

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

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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

APM

Avidity Partners Management Dallas, Texas $936M AUM 195% 1-Year Est. Return

Opaleye Management Boston, Massachusetts $759M AUM 124.8% 1-Year Est. Return

NWMG

Nicholson Wealth Management Group Charlestown, South Carolina $172M AUM 10.38% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

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

Rock Springs Capital Management sold out of Perspective Therapeutics (CATX) in Q4 2025, closing a stake of 444,383 shares — an estimated $1.52M sold.

Rock Springs Capital Management first reported a position in CATX in Q2 2024 and held it in 6 quarters. The position peaked at $5.53M in Q3 2024. 117 funds tracked by Wall St. Rank hold CATX as of Q4 2025.

Rock Springs Capital Management reported no remaining Perspective Therapeutics position as of Q4 2025 after selling out during the quarter.
Rock Springs Capital Management sold 444,383 Perspective Therapeutics shares in Q4 2025, an estimated $1.52M.
Rock Springs Capital Management first reported a position in Perspective Therapeutics in Q2 2024 and held it in 6 quarters.
Rock Springs Capital Management's Perspective Therapeutics position peaked at $5.53M in Q3 2024.
117 funds tracked by Wall St. Rank held Perspective Therapeutics as of Q4 2025.

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