Stock Ownership/ANAB

ANAPTYSBIO INC (ANAB): Ownership & Insider Activity

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

Reported Holders
18
13F filers
Aggregate Value
$271.5M
Across holders
Last Price
$58.44
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity9 increased9 reduced4 exited
Full exits: Fisher Asset Management, LLC, Point72 Asset Management, L.P., BALYASNY ASSET MANAGEMENT LLC, Walleye Capital LLC
Institutional Holders of ANAB
↗
18 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund807K$54.5M20.1%0.0%Added+$22.4MQ2 2026
Woodline Partners LP
CIK 0001784547
Hedge Fund717K$48.4M17.8%0.1%Added+$25.2MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund540K$36.4M13.4%0.0%Reduced+$11.0MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund489K$33.0M12.2%0.0%Reduced$-234KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund394K$26.6M9.8%0.0%Added+$24.2MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund324K$21.9M8.1%0.0%Added+$3.8MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund263K$17.8M6.5%0.0%Reduced$-13.6MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund229K$15.4M5.7%0.0%Reduced$-1.8MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund58K$3.9M1.4%0.0%Reduced$-2.2MQ2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLC
CIK 0001556921
Hedge Fund58K$3.9M1.4%0.0%Reduced$-1.4MQ2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$54.5M· 20.1% of total· 0.0% port· 807K sh· +$22.4M QoQ· Q2 2026
Woodline Partners LPAdded
Hedge Fund
$48.4M· 17.8% of total· 0.1% port· 717K sh· +$25.2M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$36.4M· 13.4% of total· 0.0% port· 540K sh· +$11.0M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$33.0M· 12.2% of total· 0.0% port· 489K sh· $-234K QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$26.6M· 9.8% of total· 0.0% port· 394K sh· +$24.2M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$21.9M· 8.1% of total· 0.0% port· 324K sh· +$3.8M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$17.8M· 6.5% of total· 0.0% port· 263K sh· $-13.6M QoQ· Q2 2026
Qube Research & Technologies LtdReduced
Hedge Fund
$15.4M· 5.7% of total· 0.0% port· 229K sh· $-1.8M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$3.9M· 1.4% of total· 0.0% port· 58K sh· $-2.2M QoQ· Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLCReduced
Hedge Fund
$3.9M· 1.4% of total· 0.0% port· 58K sh· $-1.4M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$3.1M· 1.2% of total· 0.0% port· 46K sh· +$3.1M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$3.0M· 1.1% of total· 0.0% port· 44K sh· +$2.8M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$1.4M· 0.5% of total· 0.0% port· 20K sh· +$1.0M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$900K· 0.3% of total· 0.0% port· 13K sh· +$155K QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$506K· 0.2% of total· 0.0% port· 8K sh· — QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$425K· 0.2% of total· 0.0% port· 6K sh· $-518K QoQ· Q2 2026
Ancora Advisors, LLCAdded
Hedge Fund
$338K· 0.1% of total· 0.0% port· 5K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$10K· 0.0% of total· 0.0% port· 153 sh· $-25K QoQ· Q2 2026
1–10 of 18
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