Calamos Advisors LLC
- SEC CIK
- 0001316507
- Latest filing
- Jul 31, 2026
ATEC holding history
Alphatec Holdings, Inc. in every 13F filed by Calamos Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
ATEC overviewAll 13F holders of ATECFull Q2 2026 holdings
- Shares (Q2 2024)
- 0
- Sold out in Q2 2024
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 8
- Since Q1 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2024 | 0 | $0 | 0.0% | −94,312−100.0% | Sold out | Holders |
| Q1 2024 | 94,312 | $1.30M | <0.1% | −80,399−46.0% | Reduced | Holders |
| Q4 2023 | 174,711 | $2.64M | <0.1% | +16,949+10.7% | Added | Holders |
| Q3 2023 | 157,762 | $2.05M | <0.1% | −129,004−45.0% | Reduced | Holders |
| Q2 2023 | 286,766 | $5.16M | <0.1% | +81,681+39.8% | Added | Holders |
| Q1 2023 | 205,085 | $3.20M | <0.1% | +46,330+29.2% | Added | Holders |
| Q4 2022 | 158,755 | $1.96M | <0.1% | +158,755 | New | Holders |
| Q3 2021 | 0 | $0 | 0.0% | −172,016−100.0% | Sold out | Holders |
| Q2 2021 | 172,016 | $2.63M | <0.1% | −81,245−32.1% | Reduced | Holders |
| Q1 2021 | 253,261 | $4.00M | <0.1% | – | – | Holders |
Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.