Stock Ownership/MD

PEDIATRIX MEDICAL GROUP INC (MD): Ownership & Insider Activity

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

Reported Holders
14
13F filers
Aggregate Value
$133.5M
Across holders
Last Price
$26.60
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity7 increased7 reduced2 exited
Full exits: BALYASNY ASSET MANAGEMENT LLC, CITADEL ADVISORS LLC
Institutional Holders of MD
↗
14 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
SHAW D E & CO INC
CIK 0001009207
Hedge Fund1.61M$40.9M30.6%0.0%Reduced+$36.5MQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund1.34M$33.9M25.4%0.1%Added+$29.5MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund1.29M$32.6M24.4%0.0%Reduced$-6.2MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund471K$11.5M8.6%0.0%Reduced+$11.5MQ2 2026
ArrowMark Colorado Holdings LLC
CIK 0001483859
Hedge Fund203K$5.1M3.8%0.2%Reduced$-2.1MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund121K$3.1M2.3%0.0%Reduced$-666KQ2 2026
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund83K$2.1M1.6%0.0%Reduced$-1.0MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund55K$1.4M1.0%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund45K$1.2M0.9%0.0%Reduced$-73KQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund34K$872K0.7%0.0%Added—Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$40.9M· 30.6% of total· 0.0% port· 1.61M sh· +$36.5M QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$33.9M· 25.4% of total· 0.1% port· 1.34M sh· +$29.5M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$32.6M· 24.4% of total· 0.0% port· 1.29M sh· $-6.2M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$11.5M· 8.6% of total· 0.0% port· 471K sh· +$11.5M QoQ· Q2 2026
ArrowMark Colorado Holdings LLCReduced
Hedge Fund
$5.1M· 3.8% of total· 0.2% port· 203K sh· $-2.1M QoQ· Q2 2026
Qube Research & Technologies LtdReduced
Hedge Fund
$3.1M· 2.3% of total· 0.0% port· 121K sh· $-666K QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$2.1M· 1.6% of total· 0.0% port· 83K sh· $-1.0M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$1.4M· 1.0% of total· 0.0% port· 55K sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$1.2M· 0.9% of total· 0.0% port· 45K sh· $-73K QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$872K· 0.7% of total· 0.0% port· 34K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$331K· 0.2% of total· 0.0% port· 13K sh· +$88K QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$279K· 0.2% of total· 0.0% port· 11K sh· +$33K QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDAdded
Hedge Fund
$224K· 0.2% of total· 0.0% port· 9K sh· — QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$35K· 0.0% of total· 0.0% port· 1K sh· — QoQ· Q2 2026
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