Rock Springs Capital Management’s Alphatec Holdings ATEC Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$3.11M	Buy	360,000 +10,000	+3%	+$91.1K	0.15%	84
2026 Q1	$3.81M	Buy	350,000 +47,500	+16%	+$691K	0.22%	72
2025 Q4	$6.36M	Hold	302,500	–	–	0.33%	64
2025 Q3	$4.4M	Buy	302,500 +35,000	+13%	+$487K	0.26%	68
2025 Q2	$2.97M	Hold	267,500	–	–	0.19%	74
2025 Q1	$2.71M	Buy	267,500 +67,500	+34%	+$725K	0.16%	74
2024 Q4	$1.84M	Buy	+200,000	New	+$1.6M	0.07%	92

Other funds holding ATEC

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

Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

BNP Paribas Asset Management Paris, France $99.8B AUM 45.22% 1-Year Est. Return

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

Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return

Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

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

Rock Springs Capital Management increased its Alphatec Holdings (ATEC) stake by 2.9% in Q2 2026, buying an estimated $91.1K and bringing the position to 360,000 shares worth $3.11M. The position accounts for 0.15% of the portfolio, ranked #84.

Rock Springs Capital Management first reported a position in ATEC in Q4 2024 and has held it in 7 quarters since. The position peaked at $6.36M in Q4 2025. 267 funds tracked by Wall St. Rank hold ATEC as of Q2 2026.

Rock Springs Capital Management held 360,000 shares of Alphatec Holdings worth $3.11M as of Q2 2026.
Rock Springs Capital Management bought 10,000 Alphatec Holdings shares in Q2 2026, an estimated $91.1K.
Alphatec Holdings made up 0.15% of Rock Springs Capital Management's portfolio in Q2 2026, its #84 holding.
Rock Springs Capital Management first reported a position in Alphatec Holdings in Q4 2024 and has held it in 7 quarters since.
Rock Springs Capital Management's Alphatec Holdings position peaked at $6.36M in Q4 2025.
267 funds tracked by Wall St. Rank held Alphatec Holdings as of Q2 2026.

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