Alphatec Holdings
ATEC · NASDAQ
$10.86+$0.45 (+4.32%)TodayMarket closed ·
Prev close $10.41
Who owns ATEC
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 38.5% of ATEC’s shares.
- Squadron Capital LLC6.8%
- BlackRock Institutional Trust Company, N.A.6.0%
- Braidwell LP4.2%
- American Century Investment Management, Inc.4.2%
- Next 6 largest institutions17.2%
- All other shareholders61.5%
| Holder | Shares | % of shares |
|---|---|---|
| Squadron Capital LLC | 10.40M | 6.76% |
| BlackRock Institutional Trust Company, N.A. | 9.26M | 6.02% |
| Braidwell LP | 6.53M | 4.25% |
| American Century Investment Management, Inc. | 6.52M | 4.24% |
| L-5 Healthcare Partners LLC | 6.07M | 3.95% |
| Vanguard Capital Management, LLC | 5.12M | 3.33% |
| Miles (Patrick S) | 4.92M | 3.20% |
| BNP Paribas Asset Management USA, Inc. | 3.53M | 2.30% |
| State Street Investment Management (US) | 3.48M | 2.26% |
| Emerald Advisers LLC | 3.36M | 2.19% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| American Century Small Cap Growth Fund | 4.90M | 3.19% |
| Vanguard Total Stock Market Index Fund | 3.65M | 2.37% |
| iShares Russell 2000 ETF | 3.21M | 2.09% |
| Vanguard Mid-Cap Growth Fund | 2.21M | 1.44% |
| BNP Paribas US Small Cap | 1.85M | 1.20% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $2.01M (4 trades) and sold $127.28K (2 trades) of ATEC on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Carls Thomas Andrew | Award | 200.00K | — |
| Miles Patrick | Buy | 115.00K | $1.01M |
| Marshall Tyson Eliot | Sale | 8.17K | $78.82K |
| MCGINNIS KAREN K | Sale | 6.05K | $48.46K |
| Pelizzon David R | Award | 32.01K | — |
| Blackford Quentin S. | Award | 32.01K | — |
| Demski David M | Award | 32.01K | — |
| Berkowitz Mortimer III | Award | 32.01K | — |
| Valentine Keith | Award | 32.01K | — |
| MCGINNIS KAREN K | Award | 32.01K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 14.07M
- Days to cover
- 6.97
- % of shares outstanding
- 9.15%
- Average daily volume
- 2.02M
- Change since last report
- −2.5%
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