Citadel Advisors
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Citadel Advisors’s Alphatec Holdings ATEC Stock Holding History

Citadel Advisors’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 		$1.1M Sell
127,300
-58,600
-32% -$534K ﹤0.01% 7968
2026
Q1 		$2.02M Buy
185,900
+4,200
+2% +$61.1K ﹤0.01% 6043
2025
Q4 		$3.82M Sell
181,700
-93,000
-34% -$1.72M ﹤0.01% 4746
2025
Q3 		$3.99M Sell
274,700
-42,100
-13% -$586K ﹤0.01% 4765
2025
Q2 		$3.52M Buy
316,800
+7,700
+2% +$88.4K ﹤0.01% 4703
2025
Q1 		$3.13M Buy
309,100
+28,200
+10% +$303K ﹤0.01% 4686
2024
Q4 		$2.58M Buy
280,900
+219,400
+357% +$1.75M ﹤0.01% 5113
2024
Q3 		$342K Buy
61,500
+40,300
+190% +$309K ﹤0.01% 9052
2024
Q2 		$222K Sell
21,200
-42,500
-67% -$495K ﹤0.01% 9707
2024
Q1 		$878K Sell
63,700
-301,500
-83% -$4.47M ﹤0.01% 7184
2023
Q4 		$5.52M Buy
365,200
+256,200
+235% +$3.06M ﹤0.01% 3642
2023
Q3 		$1.41M Buy
109,000
+8,300
+8% +$130K ﹤0.01% 5891
2023
Q2 		$1.81M Sell
100,700
-32,500
-24% -$506K ﹤0.01% 5320
2023
Q1 		$2.08M Buy
133,200
+104,200
+359% +$1.47M ﹤0.01% 5296
2022
Q4 		$358K Buy
+29,000
New +$292K ﹤0.01% 8936
2022
Q3 		– Sell
-16,200
Closed -$106K – 12571
2022
Q2 		$106K Buy
+16,200
New +$149K ﹤0.01% 11355
2022
Q1 		– Sell
-20,900
Closed -$239K – 13535
2021
Q4 		$239K Sell
20,900
-4,500
-18% -$53.1K ﹤0.01% 11452
2021
Q3 		$310K Sell
25,400
-23,800
-48% -$332K ﹤0.01% 11006
2021
Q2 		$754K Buy
49,200
+18,800
+62% +$290K ﹤0.01% 9089
2021
Q1 		$480K Sell
30,400
-10,500
-26% -$165K ﹤0.01% 9760
2020
Q4 		$594K Buy
40,900
+22,900
+127% +$242K ﹤0.01% 7830
2020
Q3 		$120K Sell
18,000
-16,200
-47% -$91.3K ﹤0.01% 9158
2020
Q2 		$161K Buy
34,200
+8,800
+35% +$38.9K ﹤0.01% 8688
2020
Q1 		$88K Buy
+25,400
New +$146K ﹤0.01% 8708

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

Citadel Advisors's ATEC Position: Q2 2026 in Review

Citadel Advisors increased its Alphatec Holdings (ATEC) stake by 187% in Q2 2026, buying an estimated $14.6M and bringing the position to 2,461,400 shares worth $21.3M. The position accounts for ﹤0.01% of the portfolio, ranked #2492.

Citadel Advisors first reported a position in ATEC in Q3 2013 and has held it in 32 quarters since. The position peaked at $35.5M in Q4 2023. 267 funds tracked by Wall St. Rank hold ATEC as of Q2 2026.

  • Citadel Advisors held 2,461,400 shares of Alphatec Holdings worth $21.3M as of Q2 2026.
  • Citadel Advisors bought 1,604,061 Alphatec Holdings shares in Q2 2026, an estimated $14.6M.
  • Alphatec Holdings made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #2492 holding.
  • Citadel Advisors first reported a position in Alphatec Holdings in Q3 2013 and has held it in 32 quarters since.
  • Citadel Advisors's Alphatec Holdings position peaked at $35.5M in Q4 2023.
  • 267 funds tracked by Wall St. Rank held Alphatec Holdings as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.