Rock Springs Capital Management’s Oscar Health OSCR Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-700,000	Closed	-$15M	–	100
2025 Q2	$15M	Sell	700,000 -350,000	-33%	-$5.2M	0.94%	39
2025 Q1	$13.8M	Hold	1,050,000	–	–	0.79%	45
2024 Q4	$14.1M	Buy	1,050,000 +38,600	+4%	+$621K	0.54%	56
2024 Q3	$21.5M	Sell	1,011,400 -240,100	-19%	-$4.32M	0.7%	50
2024 Q2	$19.8M	Sell	1,251,500 -858,500	-41%	-$15.8M	0.6%	51
2024 Q1	$31.4M	Buy	2,110,000 +1,375,000	+187%	+$18.8M	0.8%	42
2023 Q4	$6.73M	Buy	+735,000	New	+$5.07M	0.17%	81

Other funds holding OSCR

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

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

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

TCMNY

Thrive Capital Management (New York) New York $344M AUM 25.6% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

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

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

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

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Rock Springs Capital Management's OSCR Position: Q3 2025 in Review

Rock Springs Capital Management sold out of Oscar Health (OSCR) in Q3 2025, closing a stake of 700,000 shares — an estimated $15M sold.

Rock Springs Capital Management first reported a position in OSCR in Q4 2023 and held it in 7 quarters. The position peaked at $31.4M in Q1 2024. 343 funds tracked by Wall St. Rank hold OSCR as of Q3 2025.

Rock Springs Capital Management reported no remaining Oscar Health position as of Q3 2025 after selling out during the quarter.
Rock Springs Capital Management sold 700,000 Oscar Health shares in Q3 2025, an estimated $15M.
Rock Springs Capital Management first reported a position in Oscar Health in Q4 2023 and held it in 7 quarters.
Rock Springs Capital Management's Oscar Health position peaked at $31.4M in Q1 2024.
343 funds tracked by Wall St. Rank held Oscar Health as of Q3 2025.

Based on Rock Springs Capital Management's 13F filing for Q3 2025, filed 14 Nov 2025.