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Alphatec Holdings Inc

CUSIP: 02081G102 | 125 institutional holders

Quarters

Q3 2026Q4 2016Q3 2016Q2 2016Q1 2016
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13D/AGen IV Investment Opportunities, LLC3,494,25814.1%−2,019,390Aug 7, 2026Not yet in a 13F
13D/ALSP Investment Advisors, LLC5,513,64823.2%New 5%+ stakeMar 25, 2026Not yet in a 13F
13D/AGen IV Investment Opportunities, LLC3,494,258
14.1% of class · Aug 7, 2026−2,019,390
Not yet in a 13F
13D/ALSP Investment Advisors, LLC5,513,648
23.2% of class · Mar 25, 2026New 5%+ stake
Not yet in a 13F

Institutional Holders — Q3 2026

Byrne Asset Management LLC600
0.0% of portfolio›$5.9K
StyleTurnoverLocationFiled
Byrne Asset Management LLC
600$5.9K0.0%CoreLowKingston, NJ2026-10-06