Alphatec Holdings, Inc. (ATEC) ownership: Top institutional holder: VANGUARD GROUP INC ($144.83M). Insider activity: Net Seller (3 buys, 17 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 6883626.00 | $144.83M | 2025-12-31 |
| BlackRock, Inc. | 10088182.00 | $109.76M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 6424777.00 | $69.90M | 2026-03-31 |
| Driehaus Capital Management LLC | 2858771.00 | $60.15M | 2025-12-31 |
| UBS Group AG | 5211600.00 | $56.70M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4913779.00 | $53.46M | 2026-03-31 |
| ROYAL BANK OF CANADA | 4516592.00 | $49.14M | 2026-03-31 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 3616330.00 | $39.35M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-10 | |
| Sell | null | 2026-06-10 | |
| Sell | null | 2026-06-10 | |
| Sell | null | 2026-06-10 | |
| Sell | null | 2026-06-10 | |
| Sell | null | 2026-06-10 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-08 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.