Mariner
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Mariner’s Alphatec Holdings ATEC Stock Holding History

Mariner’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 		$805K Buy
93,024
+50,978
+121% +$464K ﹤0.01% 2119
2026
Q1 		$457K Buy
42,046
+27,103
+181% +$395K ﹤0.01% 2557
2025
Q4 		$314K Buy
+14,943
New +$277K ﹤0.01% 2795
2025
Q3 		– Sell
-10,729
Closed -$119K – 3562
2025
Q2 		$119K Buy
+10,729
New +$123K ﹤0.01% 3199

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

Mariner's ATEC Position: Q2 2026 in Review

Mariner increased its Alphatec Holdings (ATEC) stake by 121% in Q2 2026, buying an estimated $464K and bringing the position to 93,024 shares worth $805K. The position accounts for ﹤0.01% of the portfolio, ranked #2119.

Mariner first reported a position in ATEC in Q2 2025 and has held it in 4 quarters since. 267 funds tracked by Wall St. Rank hold ATEC as of Q2 2026.

  • Mariner held 93,024 shares of Alphatec Holdings worth $805K as of Q2 2026.
  • Mariner bought 50,978 Alphatec Holdings shares in Q2 2026, an estimated $464K.
  • Alphatec Holdings made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2119 holding.
  • Mariner first reported a position in Alphatec Holdings in Q2 2025 and has held it in 4 quarters since.
  • 267 funds tracked by Wall St. Rank held Alphatec Holdings as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.