Alphatec Holdings, Inc. (ATEC) Stock
3 of the hedge funds AlphaScala tracks reported ATEC in 13F filings for the quarter ended Jun 30, 2026; the largest reported position is Citadel's at $21.29M. Company insiders reported 3 open-market buys and 0 sales on SEC Form 4 in the 90 days to Nov 10, 2026.
Which hedge funds own ATEC?
From 13F filings| Fund | Shares Held | Position Value | Change vs prior Q |
|---|---|---|---|
| Citadel Ken Griffin | 2.46M | $21.29M | +187% |
| Millennium Management Israel Englander | 1.15M | $9.91M | -59% |
| Renaissance Technologies Jim Simons (founder) | 285K | $2.46M | -73% |
13F holdings as of Jun 30, 2026
Explore all tracked funds →Are Alphatec Holdings, Inc. insiders buying or selling?
SEC Form 4 filings| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Nov 10, 26 | Valentine Keith | Director | BUY | 35.0K | $243K |
| Oct 30, 26 | Demski David M | Director | BUY | 60.0K | $409K |
| Sep 10, 26 | Miles Patrick | CEO | BUY | 115.0K | $1.0M |
| Aug 5, 26 | Marshall Tyson Eliot | GENERAL COUNSEL & CORP. SEC. | SELL | 8.2K | $79K |
SEC Form 4 filings as of Nov 10, 2026
See cluster-buy signals across all tickers →ATEC price chart
Powered by TradingViewWhat does Alphatec Holdings, Inc. do?
Alphatec Holdings Inc. is a medical technology company specializing in the design, development, and commercialization of surgical solutions for the treatment of spinal disorders. It focuses exclusively on spine surgery, offering an integrated ecosystem that includes implants, instruments, imaging systems, neuromonitoring technologies, and biologics to enhance procedural outcomes, reproducibility, and safety. Key platforms encompass the Alpha InformatiX system with EOS imaging for full-body analysis, VEA alignment applications, SafeOp Neural InformatiX for automated monitoring, and advanced procedural approaches like Prone TransPsoas (PTP) and Lateral TransPsoas (LTP). Through subsidiaries such as Alphatec Spine, Inc., EOS imaging S.A.S., and SafeOp Surgical, Inc., the company provides solutions for complex thoracolumbar pathologies, including degeneration, deformity, trauma, and tumors. These offerings support procedures like posterior and anterior cervical fusion, lateral and posterior lumbar interbody fusion, and vertebral body replacements with innovative NanoTec surface technology. Headquartered in Carlsbad, California, Alphatec Holdings Inc. serves surgeons and healthcare providers internationally, positioning itself as a leader in data-informed, clinically distinguished spine care.