Ken Griffin’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 | $9.33M | Sell |
857,339
-480,226
| -36% | -$6.99M | ﹤0.01% | 3355 |
|
|
2025
Q4 | $28.1M | Buy |
1,337,565
+1,152,673
| +623% | +$21.3M | ﹤0.01% | 1972 |
|
|
2025
Q3 | $2.69M | Buy |
184,892
+16,739
| +10% | +$233K | ﹤0.01% | 5499 |
|
|
2025
Q2 | $1.87M | Sell |
168,153
-390,916
| -70% | -$4.49M | ﹤0.01% | 5820 |
|
|
2025
Q1 | $5.67M | Buy |
559,069
+451,400
| +419% | +$4.85M | ﹤0.01% | 3678 |
|
|
2024
Q4 | $988K | Sell |
107,669
-64,873
| -38% | -$518K | ﹤0.01% | 7047 |
|
|
2024
Q3 | $959K | Sell |
172,542
-58,480
| -25% | -$449K | ﹤0.01% | 6948 |
|
|
2024
Q2 | $2.41M | Sell |
231,022
-1,379,821
| -86% | -$16.1M | ﹤0.01% | 4967 |
|
|
2024
Q1 | $22.2M | Sell |
1,610,843
-735,981
| -31% | -$10.9M | ﹤0.01% | 1957 |
|
|
2023
Q4 | $35.5M | Buy |
2,346,824
+2,216,431
| +1,700% | +$26.5M | 0.01% | 1467 |
|
|
2023
Q3 | $1.69M | Sell |
130,393
-150,779
| -54% | -$2.36M | ﹤0.01% | 5528 |
|
|
2023
Q2 | $5.06M | Sell |
281,172
-853,279
| -75% | -$13.3M | ﹤0.01% | 3626 |
|
|
2023
Q1 | $17.7M | Buy |
1,134,451
+240,527
| +27% | +$3.4M | ﹤0.01% | 2054 |
|
|
2022
Q4 | $11M | Buy |
893,924
+174,799
| +24% | +$1.76M | ﹤0.01% | 2697 |
|
|
2022
Q3 | $6.29M | Sell |
719,125
-145,097
| -17% | -$1.15M | ﹤0.01% | 3507 |
|
|
2022
Q2 | $5.65M | Buy |
864,222
+284,206
| +49% | +$2.62M | ﹤0.01% | 3569 |
|
|
2022
Q1 | $6.67M | Buy |
580,016
+414,017
| +249% | +$4.48M | ﹤0.01% | 3628 |
|
|
2021
Q4 | $1.9M | Buy |
165,999
+78,720
| +90% | +$929K | ﹤0.01% | 6375 |
|
|
2021
Q3 | $1.06M | Sell |
87,279
-244,733
| -74% | -$3.41M | ﹤0.01% | 7996 |
|
|
2021
Q2 | $5.09M | Sell |
332,012
-35,990
| -10% | -$555K | ﹤0.01% | 4389 |
|
|
2021
Q1 | $5.81M | Buy |
368,002
+193,471
| +111% | +$3.05M | ﹤0.01% | 3934 |
|
|
2020
Q4 | $2.53M | Buy |
174,531
+81,517
| +88% | +$861K | ﹤0.01% | 4865 |
|
|
2020
Q3 | $618K | Buy |
93,014
+36,691
| +65% | +$207K | ﹤0.01% | 6909 |
|
|
2020
Q2 | $265K | Sell |
56,323
-72,430
| -56% | -$320K | ﹤0.01% | 8105 |
|
|
2020
Q1 | $444K | Sell |
128,753
-109,549
| -46% | -$630K | ﹤0.01% | 6658 |
|
|
2019
Q4 | $1.69M | Buy |
+238,302
| New | +$1.53M | ﹤0.01% | 4688 |
|
|
2015
Q3 | – | Sell |
-1,084
| Closed | -$18K | – | 8860 |
|
|
2015
Q2 | $18K | Buy |
+1,084
| New | +$18.1K | ﹤0.01% | 8201 |
|
|
2015
Q1 | – | Sell |
-1,262
| Closed | -$21K | – | 8498 |
|
|
2014
Q4 | $21K | Buy |
+1,262
| New | +$21.5K | ﹤0.01% | 7754 |
|
|
2014
Q2 | – | Sell |
-15,369
| Closed | -$277K | – | 7948 |
|
|
2014
Q1 | $277K | Buy |
15,369
+12,445
| +426% | +$273K | ﹤0.01% | 5105 |
|
|
2013
Q4 | $70K | Buy |
2,924
+2,478
| +556% | +$57.2K | ﹤0.01% | 5854 |
|
|
2013
Q3 | $11K | Buy |
+446
| New | +$11.3K | ﹤0.01% | 6440 |
|
Other funds holding ATEC
VCM
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Ken Griffin's ATEC Position: Q1 2026 in Review
Ken Griffin reduced its Alphatec Holdings (ATEC) stake by 36% in Q1 2026, selling an estimated $6.99M and leaving 857,339 shares worth $9.33M. The position accounts for ﹤0.01% of the portfolio, ranked #3355.
Ken Griffin first reported a position in ATEC in Q3 2013 and has held it in 31 quarters since. The position peaked at $35.5M in Q4 2023. 285 funds tracked by Wall St. Rank hold ATEC as of Q1 2026.
- Ken Griffin held 857,339 shares of Alphatec Holdings worth $9.33M as of Q1 2026.
- Ken Griffin sold 480,226 Alphatec Holdings shares in Q1 2026, an estimated $6.99M.
- Alphatec Holdings made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #3355 holding.
- Ken Griffin first reported a position in Alphatec Holdings in Q3 2013 and has held it in 31 quarters since.
- Ken Griffin's Alphatec Holdings position peaked at $35.5M in Q4 2023.
- 285 funds tracked by Wall St. Rank held Alphatec Holdings as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.