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Magnetar Financial’s Alphatec Holdings ATEC Stock Holding History

Magnetar Financial’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 		– Sell
-32,794
Closed -$357K – 1169
2026
Q1 		$357K Buy
+32,794
New +$477K ﹤0.01% 718
2025
Q1 		– Sell
-710,576
Closed -$6.52M – 731
2024
Q4 		$6.52M Sell
710,576
-392,438
-36% -$3.13M 0.15% 106
2024
Q3 		$6.13M Buy
1,103,014
+54,503
+5% +$418K 0.13% 126
2024
Q2 		$11M Buy
+1,048,511
New +$12.2M 0.23% 88

Other funds holding ATEC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BNP Paribas Asset Management
BNP Paribas Asset Management Paris, France $99.8B AUM 45.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

Magnetar Financial's ATEC Position: Q2 2026 in Review

Magnetar Financial sold out of Alphatec Holdings (ATEC) in Q2 2026, closing a stake of 32,794 shares — an estimated $357K sold.

Magnetar Financial first reported a position in ATEC in Q2 2024 and held it in 4 quarters. The position peaked at $11M in Q2 2024. 267 funds tracked by Wall St. Rank hold ATEC as of Q2 2026.

  • Magnetar Financial reported no remaining Alphatec Holdings position as of Q2 2026 after selling out during the quarter.
  • Magnetar Financial sold 32,794 Alphatec Holdings shares in Q2 2026, an estimated $357K.
  • Magnetar Financial first reported a position in Alphatec Holdings in Q2 2024 and held it in 4 quarters.
  • Magnetar Financial's Alphatec Holdings position peaked at $11M in Q2 2024.
  • 267 funds tracked by Wall St. Rank held Alphatec Holdings as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.