Two Sigma Advisers’s Alphatec Holdings ATEC Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | – | Sell |
-1,635,100
| Closed | -$34.4M | – | 190 |
|
|
2025
Q4 | $34.4M | Buy |
1,635,100
+379,600
| +30% | +$7.03M | 0.07% | 237 |
|
|
2025
Q3 | $18.3M | Buy |
1,255,500
+497,800
| +66% | +$6.93M | 0.04% | 352 |
|
|
2025
Q2 | $8.41M | Buy |
757,700
+456,800
| +152% | +$5.25M | 0.02% | 570 |
|
|
2025
Q1 | $3.05M | Buy |
300,900
+155,000
| +106% | +$1.66M | 0.01% | 990 |
|
|
2024
Q4 | $1.34M | Buy |
145,900
+62,400
| +75% | +$498K | ﹤0.01% | 1323 |
|
|
2024
Q3 | $464K | Buy |
83,500
+70,800
| +557% | +$544K | ﹤0.01% | 1740 |
|
|
2024
Q2 | $133K | Sell |
12,700
-21,100
| -62% | -$246K | ﹤0.01% | 2287 |
|
|
2024
Q1 | $466K | Sell |
33,800
-104,400
| -76% | -$1.55M | ﹤0.01% | 1899 |
|
|
2023
Q4 | $2.09M | Sell |
138,200
-329,600
| -70% | -$3.94M | ﹤0.01% | 1264 |
|
|
2023
Q3 | $6.07M | Sell |
467,800
-503,000
| -52% | -$7.88M | 0.02% | 648 |
|
|
2023
Q2 | $17.5M | Buy |
970,800
+212,700
| +28% | +$3.31M | 0.04% | 337 |
|
|
2023
Q1 | $11.8M | Buy |
758,100
+312,400
| +70% | +$4.42M | 0.03% | 497 |
|
|
2022
Q4 | $5.5M | Buy |
445,700
+367,700
| +471% | +$3.71M | 0.02% | 745 |
|
|
2022
Q3 | $682K | Buy |
78,000
+65,100
| +505% | +$515K | ﹤0.01% | 1714 |
|
|
2022
Q2 | $84K | Buy |
+12,900
| New | +$119K | ﹤0.01% | 2409 |
|
|
2021
Q4 | – | Sell |
-469,700
| Closed | -$5.73M | – | 2618 |
|
|
2021
Q3 | $5.73M | Sell |
469,700
-109,800
| -19% | -$1.53M | 0.01% | 723 |
|
|
2021
Q2 | $8.88M | Buy |
579,500
+128,700
| +29% | +$1.99M | 0.02% | 617 |
|
|
2021
Q1 | $7.12M | Buy |
450,800
+334,900
| +289% | +$5.27M | 0.02% | 707 |
|
|
2020
Q4 | $1.68M | Buy |
115,900
+500
| +0.4% | +$5.28K | ﹤0.01% | 1343 |
|
|
2020
Q3 | $766K | Sell |
115,400
-27,300
| -19% | -$154K | ﹤0.01% | 1620 |
|
|
2020
Q2 | $671K | Buy |
142,700
+10,000
| +8% | +$44.2K | ﹤0.01% | 1759 |
|
|
2020
Q1 | $458K | Buy |
132,700
+52,500
| +65% | +$302K | ﹤0.01% | 1844 |
|
|
2019
Q4 | $569K | Buy |
+80,200
| New | +$515K | ﹤0.01% | 1820 |
|
|
2014
Q4 | – | Sell |
-2,300
| Closed | -$47K | – | 2421 |
|
|
2014
Q3 | $47K | Buy |
2,300
+258
| +13% | +$4.74K | ﹤0.01% | 2252 |
|
|
2014
Q2 | $40K | Buy |
2,042
+25
| +1% | +$420 | ﹤0.01% | 2398 |
|
|
2014
Q1 | $37K | Buy |
2,017
+167
| +9% | +$3.67K | ﹤0.01% | 2205 |
|
|
2013
Q4 | $44K | Buy |
1,850
+42
| +2% | +$970 | ﹤0.01% | 2244 |
|
|
2013
Q3 | $43K | Sell |
1,808
-218
| -11% | -$5.52K | ﹤0.01% | 2044 |
|
|
2013
Q2 | $50K | Buy |
+2,026
| New | +$47.1K | ﹤0.01% | 2115 |
|
Other funds holding ATEC
VCM
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Two Sigma Advisers's ATEC Position: Q1 2026 in Review
Two Sigma Advisers sold out of Alphatec Holdings (ATEC) in Q1 2026, closing a stake of 1,635,100 shares — an estimated $34.4M sold.
Two Sigma Advisers first reported a position in ATEC in Q2 2013 and held it in 29 quarters. The position peaked at $34.4M in Q4 2025. 285 funds tracked by Wall St. Rank hold ATEC as of Q1 2026.
- Two Sigma Advisers reported no remaining Alphatec Holdings position as of Q1 2026 after selling out during the quarter.
- Two Sigma Advisers sold 1,635,100 Alphatec Holdings shares in Q1 2026, an estimated $34.4M.
- Two Sigma Advisers first reported a position in Alphatec Holdings in Q2 2013 and held it in 29 quarters.
- Two Sigma Advisers's Alphatec Holdings position peaked at $34.4M in Q4 2025.
- 285 funds tracked by Wall St. Rank held Alphatec Holdings as of Q1 2026.
Based on Two Sigma Advisers's 13F filing for Q1 2026.