ATEC — ALPHATEC HLDGS INC
Public company
InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.
Sourced from SEC EDGAR public filings
Why are billionaires buying ATEC?
Built from public SEC filings and public economic data. Not a recommendation.
Why? — Evidence & Confidence ▾
Of 5 tracked investors who changed their ATEC position last quarter, 3 bought and 2 sold (60% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).
- +3 tracked investors added or increased positions last quarter (Howard Marks, Ken Griffin, Paul Tudor Jones)
- +4 tracked investors reported holding ATEC at their latest filing
- +Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource
- −2 tracked investors reduced or exited last quarter (1 reduced, 1 sold out)
- −13F data is disclosed up to 45 days after quarter end — positions may have changed since
- · 13F disclosure lag (up to 45 days)
- · Tracked investors are a sample, not the whole market
- · Sector regime fit is a historical average, not a guarantee
Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.
About ALPHATEC HLDGS INC (ATEC)
ALPHATEC HLDGS INC (ATEC) appears in the most recent 13F filings of 4 tracked institutional investors. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $71M. Across recent filings, tracked investors recorded 7 new positions, 16 increased, 12 reduced, and 3 exited. All data sourced from SEC 13F filings.
Based on recent institutional activity in ATEC
How many top investors track ATEC
A small number of top investors own this.
ATEC Ownership Composition
How ALPHATEC HLDGS INC is held across tracked investor types, based on reported 13F positions.
- Multi-Strategy / Quant74.3%
- Value & Distressed20.5%
- Macro5.2%
Tracked investors currently reporting ATEC
1 tracked investor has since exited this position — listed separately below.
- Izzy EnglanderJun 30, 2026Millennium ManagementShares1.1MValue$9.9M% Portfolio0.00%
- Ken GriffinJun 30, 2026Citadel AdvisorsShares2.7MValue$23.3M% Portfolio0.00%
- Paul Tudor JonesJun 30, 2026Tudor Investment CorpShares270.7KValue$2.3M% Portfolio0.00%
- Howard MarksJun 30, 2026Oaktree Capital ManagementShares9.2MValue$9.1M% Portfolio0.13%
Previously held ATEC
These investors reported ATEC in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.
| Investor | Firm | Last reported shares | Value then | Last held |
|---|---|---|---|---|
| Steve Cohen | Point72 Asset Management | 2.5M | $27.1M | Mar 31, 2026 |
Recent activity
- Increased$24.6M(30.43%)Nov 14, 2024
- Increased$8.1M(91.77%)Feb 14, 2025
- Reduced$3.4M(-96.06%)May 15, 2025
- Increased$5.4M(44.75%)Aug 14, 2025
- Increased$46.8M(292.18%)Feb 17, 2026
- Increased$30.6M(26.22%)May 15, 2026
- Reduced$334.3K(-87.54%)Aug 14, 2026
- Increased$4.6M(1.00%)Aug 14, 2024
- Increased$13.5M(217.06%)Nov 14, 2024
- Unchanged$14.2M(0.00%)Feb 12, 2025
- Sold$0(-100.00%)May 15, 2025
- New$9.1MAug 14, 2026
- Increased$1.9M(4.55%)Nov 14, 2024
- Increased$10.8M(107.45%)May 15, 2025
- Reduced$6.4M(-45.57%)Aug 14, 2025
- Reduced$7.9M(-6.48%)Nov 14, 2025
- Increased$32.7M(186.80%)Feb 17, 2026
- Increased$23.3M(146.10%)Aug 14, 2026
- Reduced$4.8M(-73.06%)Nov 14, 2024
- Reduced$5.5M(-30.47%)Feb 14, 2025
- Reduced$5.7M(-6.28%)Jul 21, 2025
- Reduced$3.4M(-44.78%)Aug 14, 2025
- Reduced$2.2M(-51.42%)Nov 14, 2025
- Increased$23.1M(631.60%)Feb 17, 2026
- Increased$27.1M(126.71%)May 15, 2026
- Sold$0(-100.00%)Aug 14, 2026
- Sold$0(-100.00%)Aug 14, 2024
- $823.9KNov 14, 2024
- Increased$5.4M(295.39%)Feb 14, 2025
- Reduced$4.2M(-28.71%)May 15, 2025
- Reduced$1.4M(-69.56%)Aug 14, 2025
- Increased$13.1M(608.36%)Dec 9, 2025
- Reduced$2.9M(-70.30%)May 15, 2026
- Increased$2.3M(1.56%)Aug 14, 2026
- New$33.4MSep 16, 2024
- New$3.4MAug 14, 2024
- New$4.9MMay 14, 2024
- $71.1MMay 15, 2024
- $187.2KMay 15, 2024
Frequently asked questions
- How many institutional investors hold ATEC?
- 4 tracked institutional investors disclosed a position in ATEC (ALPHATEC HLDGS INC) in their most recent 13F filing.
- Who is the largest institutional holder of ATEC?
- Izzy Englander, Millennium Management, holds the largest disclosed position in ATEC, valued at $71M.
- Did institutional ownership of ATEC increase or decrease?
- Across recent 13F filings, tracked investors recorded 7 new positions, 16 increased, 12 reduced, and 3 fully exited ATEC.
- Where does this ATEC ownership data come from?
- SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.