Alphatec
ATEC
10.25
-0.29
-2.75%
Alphatec
US · ATEC
#2945 by market cap
Listed 1970
10.25
-0.29
-2.75%
Live - 5344 symbols - heartbeat 221s ago
· 2026-10-08 04:27
Pre-market
10.06
-1.85%
After-hours
10.27
+0.19%
Overnight
10.25
0.00%
- Market cap
- 1.58B
- P/E (TTM)i
- -14.44
- P/Bi
- -131.41
- EPSi
- -0.96
- Div yieldi
- 0.00%
- 52W posi
- 21%
Reader sentiment
Are you bullish or bearish on ATEC?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 2 in the most recent period (2026/Q3).
- Total institutional ownership fell 1.3 percentage points.
Institutional ownership
- Held by institutions
- 86.02% -1.34pp
- Institutions
- 313 -2
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund54.31%
Hedge Fund13.61%
Individual/Insider10.31%
VC/PE Fund6.73%
Public Company4.98%
Private Company4.65%
Government Pension Fund0.96%
Insurance Company0.37%
Sovereign Wealth Fund0.23%
Other3.85%
Top holders as of 2026-06-30
BlackRock
7.33% · 11.33M sh
Squadron Capital, LLC
6.73% · 10.40M sh
Braidwell LP
4.23% · 6.53M sh
American Century Investment Management
4.22% · 6.52M sh
LS Power Development, LLC
3.93% · 6.07M sh
Vanguard Capital Management, LLC
3.87% · 5.97M sh
Patrick Miles
3.26% · 5.03M sh
BNPP Asset Management Holding
2.29% · 3.54M sh
State Street Global Advisors
2.25% · 3.48M sh
Emerald Advisers, LLC
2.18% · 3.36M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 22 buys · 27 sells
| Name | Role | Stake |
|---|---|---|
| Patrick Miles | Chairperson & CEO | 3.26% |
| Ward Woods | Independent Director | 1.42% |
| Mortimer Berkowitz | Lead Independent Director | 0.79% |
| Craig Hunsaker | Executive VP of People and Culture | 0.77% |
| Evan Bakst | Independent Director | 0.74% |
| Quentin Blackford | Independent Director | 0.37% |
| David Pelizzon | Independent Director | 0.22% |
| David Demski | Independent Director | 0.19% |
| Scott Lish | Officer | 0.19% |
| Tyson Marshall | General Counsel | 0.18% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-13 | Thomas Carls | Executive Vice President, Data Intelligence & Strategy | Initial Statement of Beneficial | 0 | -- |
| 2026-09-09 | Patrick Miles | Chairperson & CEO | Open Market Acquisition | +115,000 | $8.81 |
| 2026-08-04 | Tyson Marshall | General Counsel | Automatic Disposition | -8,168 | $9.65 |
| 2026-06-10 | Karen McGinnis | Independent Director | Automatic Disposition | -6,050 | $8.01 |
| 2026-06-09 | David Demski | Independent Director | Other Acquisition | +32,012 | -- |
| 2026-06-09 | Mortimer Berkowitz | Lead Independent Director | Other Acquisition | +32,012 | -- |
| 2026-06-09 | Karen McGinnis | Independent Director | Other Acquisition | +32,012 | -- |
| 2026-06-09 | Keith Valentine | Special Advisor to the Board | Other Acquisition | +32,012 | -- |
| 2026-06-09 | David Pelizzon | Independent Director | Other Acquisition | +32,012 | -- |
| 2026-06-09 | Quentin Blackford | Independent Director | Other Acquisition | +32,012 | -- |
| 2026-05-10 | Keith Valentine | Special Advisor to the Board | Open Market Acquisition | +135,000 | $7.00–7.54 |
| 2026-04-06 | Tyson Marshall | General Counsel | Derivative Exercise and Sale | -23,393 | $2.69–11.03 |
| 2026-04-06 | Tyson Marshall | General Counsel | Derivative Exercise and Retained | +79,107 | $1.68–3.34 |
| 2026-03-12 | J. Koning | Chief Financial Officer | Automatic Disposition | -79,789 | $12.36 |
| 2026-03-12 | Scott Lish | Officer | Open Market Disposition | -260,535 | $12.30 |
| 2026-03-10 | David Sponsel | Executive Vice President of Sales | Automatic Disposition | -163,452 | $12.52 |
| 2026-03-08 | Craig Hunsaker | Executive VP of People and Culture | Other Disposition | -600 | -- |
| 2026-03-08 | Craig Hunsaker | Executive VP of People and Culture | Open Market Disposition | -82,765 | $12.45 |
| 2026-03-05 | Craig Hunsaker | Executive VP of People and Culture | Automatic Disposition | -33,602 | $12.22 |
| 2026-03-04 | Patrick Miles | Chairperson & CEO | Sale to Issuer | -219,749 | $12.57 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 04:27:26 · For reference only, not investment advice and not tailored to your situation.