Stock Ownership/ATEC

ALPHATEC HLDGS INC (ATEC): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ATEC · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
16
13F filers
Aggregate Value
$97.3M
Across holders
Last Price
$9.24
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity8 increased8 reduced7 exited
Full exits: Verition Fund Management LLC, Point72 Asset Management, L.P., MARSHALL WACE, LLP, Magnetar Financial LLC, SHAW D E & CO INC, CAPSTONE INVESTMENT ADVISORS, LLC, Walleye Capital LLC
Institutional Holders of ATEC
↗
16 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund2.46M$21.3M21.9%0.0%Added+$20.4MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund2.39M$20.6M21.2%0.0%Added+$20.6MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund1.56M$13.5M13.9%0.0%Added+$9.1MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund1.15M$9.9M10.2%0.0%Reduced$-14.4MQ2 2026
First Eagle Investment Management, LLC
CIK 0001325447
Institutional Manager997K$8.6M8.9%0.0%Added+$2.6MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund823K$7.1M7.3%0.0%Reduced$-10.5MQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund338K$2.9M3.0%0.0%Reduced$-6.0MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund327K$2.8M2.9%0.0%Reduced$-2.4MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund285K$2.5M2.5%0.0%Reduced$-6.7MQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund271K$2.3M2.4%0.0%Added+$36KQ2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$21.3M· 21.9% of total· 0.0% port· 2.46M sh· +$20.4M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$20.6M· 21.2% of total· 0.0% port· 2.39M sh· +$20.6M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$13.5M· 13.9% of total· 0.0% port· 1.56M sh· +$9.1M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$9.9M· 10.2% of total· 0.0% port· 1.15M sh· $-14.4M QoQ· Q2 2026
First Eagle Investment Management, LLCAdded
Institutional Manager
$8.6M· 8.9% of total· 0.0% port· 997K sh· +$2.6M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$7.1M· 7.3% of total· 0.0% port· 823K sh· $-10.5M QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$2.9M· 3.0% of total· 0.0% port· 338K sh· $-6.0M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$2.8M· 2.9% of total· 0.0% port· 327K sh· $-2.4M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$2.5M· 2.5% of total· 0.0% port· 285K sh· $-6.7M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$2.3M· 2.4% of total· 0.0% port· 271K sh· +$36K QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPAdded
Hedge Fund
$1.6M· 1.7% of total· 0.0% port· 189K sh· — QoQ· Q2 2026
Schonfeld Strategic Advisors LLCReduced
Hedge Fund
$1.4M· 1.5% of total· 0.0% port· 167K sh· $-5.2M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$1.4M· 1.4% of total· 0.0% port· 162K sh· — QoQ· Q2 2026
Qube Research & Technologies LtdReduced
Hedge Fund
$463K· 0.5% of total· 0.0% port· 54K sh· $-6.4M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$382K· 0.4% of total· 0.0% port· 44K sh· +$218K QoQ· Q2 2026
Brevan Howard Capital Management LPReduced
Hedge Fund
$317K· 0.3% of total· 0.0% port· 37K sh· $-935K QoQ· Q2 2026
1–10 of 16
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