ATEC
Alphatec Holdings, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -7.1% ·
share flow -2.2% ·
net new positions -7.7%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 97 | -8 | 75.07M | $650.01M | +3 | −12 |
| Q1 2026 | 109 | +7 | 80.20M | $874.01M | +9 | −3 |
| Q4 2025 | 102 | 0 | 84.66M | $1.78B | +2 | −1 |
| Q3 2025 | 18 | +2 | 33.33M | $484.67M | +2 | — |
| Q2 2025 | 13 | -1 | 26.04M | $289.00M | — | −1 |
| Q1 2025 | 11 | +1 | 10.43M | $105.73M | +1 | — |
| Q4 2024 | 10 | 0 | 10.18M | $93.47M | — | — |
| Q3 2024 | 9 | 0 | 9.49M | $52.77M | — | — |
| Q2 2024 | 9 | — | 10.94M | $114.34M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 9.52M | — | $105.63M | 0.0% | n/c | 1 | SEC ↗ ×13 |
| 2 | The Vanguard Group ✦ (passive) | 6.66M | — | $73.89M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | State Street Global Advisors ✦ (passive) | 2.76M | -2.3% | $30.67M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 2.70M | +7.4% | $29.95M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 5 | Two Sigma Investments ✦ | 1.13M | +74.2% | $12.53M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 6 | Marshall Wace ✦ | 865.98K | -49.7% | $9.61M | 0.0% | ▼ Trim | 5 | SEC ↗ ×3 |
| 7 | Renaissance Technologies ✦ | 744.20K | +243.8% | $8.26M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | AQR Capital Management ✦ | 612.07K | -9.6% | $6.79M | 0.0% | ▼ Trim | 5 | SEC ↗ ×5 |
| 9 | Millennium Management ✦ | 484.96K | +44.8% | $5.38M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | Point72 Asset Management ✦ | 309.50K | -44.8% | $3.44M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 168.15K | -69.9% | $1.87M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 78.40K | +17.9% | $871,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 10.31K | — | $114,400 | 0.0% | n/c | 1 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| D. E. Shaw & Co. | $3.08M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 282 holders, 112.73M shares, $1.22B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Officer, Director · CEO · 115.00K sh @ 8.81 · $1.01M
Open-market sales (S)
No open-market insider sales in our coverage window.
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology