Save your place

Sign in to WhoBought

Please try again later.

Pediatrix Medical Group, Inc. (MD) institutional ownership

Market cap$1.0B SectorHealthcare
Funds holding · Q1 2026
270
reported MD position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
133 buyers · 137 sellers

Pediatrix Medical Group, Inc. (MD) price and institutional activity

Dates

Q1 2026

$0 bought by 133 investors
Wasatch Advisors LPRoyce & Associates LP +131 more
$0 sold by 137 investors
Boston PartnersQube Research & Technologies Ltd +135 more
Sign in to see who bought
Bought Sold Totals per quarter; hover a bar for the names.

Pediatrix Medical Group, Inc. (MD) institutional activity · 270

Investor Type Est. change Change Δ Own Date
Wasatch Advisors LP · New
Change +2.1M Date Q1 2026
Wasatch Advisors LP New· Q1 2026 +2.1M Q1 2026
Boston Partners · Exited
Change −798K Δ Own −100.0% Date Q1 2026
Boston Partners Exited· Q1 2026 −798K −100.0% Q1 2026
Qube Research & Technologies Ltd · Reduced
Change −580K Date Q1 2026
Qube Research & Technologies Ltd Reduced· Q1 2026 −580K Q1 2026
Pacer Advisors, Inc. · Exited
Change −494K Δ Own −100.0% Date Q1 2026
Pacer Advisors, Inc. Exited· Q1 2026 −494K −100.0% Q1 2026
JPMorgan Chase & Co · Reduced
Change −478K Date Q1 2026
JPMorgan Chase & Co Reduced· Q1 2026 −478K Q1 2026
Royce & Associates LP · Added
Change +424K Date Q1 2026
Royce & Associates LP Added· Q1 2026 +424K Q1 2026
Allspring Global Investments Holdings, LLC · Added
Change +336K Date Q1 2026
Allspring Global Investments Holdings, LLC Added· Q1 2026 +336K Q1 2026
UBS Group AG · Reduced
Change −289K Date Q1 2026
UBS Group AG Reduced· Q1 2026 −289K Q1 2026
Dimensional · Added
Change +288K Date Q1 2026
Dimensional Added· Q1 2026 +288K Q1 2026
Arrowmark Colorado Holdings LLC · Reduced
Change −280K Date Q1 2026
Arrowmark Colorado Holdings LLC Reduced· Q1 2026 −280K Q1 2026
Nuveen, LLC · Reduced
Change −247K Date Q1 2026
Nuveen, LLC Reduced· Q1 2026 −247K Q1 2026
Castleknight Management LP · Added
Change +246K Date Q1 2026
Castleknight Management LP Added· Q1 2026 +246K Q1 2026
American Century Companies Inc · Added
Change +227K Date Q1 2026
American Century Companies Inc Added· Q1 2026 +227K Q1 2026
Arrowstreet Capital, Limited Partnership · Exited
Change −193K Δ Own −100.0% Date Q1 2026
Arrowstreet Capital, Limited Partnership Exited· Q1 2026 −193K −100.0% Q1 2026
Allianz Asset Management GMBH · Added
Change +183K Date Q1 2026
Allianz Asset Management GMBH Added· Q1 2026 +183K Q1 2026
Data through Q1 2026 · filed May 29, 2026
15 of 270

Famous investor activity in Pediatrix Medical Group, Inc. (MD)

Pediatrix Medical Group, Inc. (MD) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Haddock David · Officer 2 operations 71K
Owned 51K Trade date Jun 22, 2026 Filed date Jun 24, 2026
Haddock David Officer 2 operations 71K 51K Jun 22, 2026 Jun 24, 2026
Moore Mary Ann E. · Officer 2 operations 0
Owned 112K Trade date Jun 9, 2026 Filed date Jun 10, 2026
Moore Mary Ann E. Officer 2 operations 0 112K Jun 9, 2026 Jun 10, 2026
Ordan Mark S. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -97K
Owned 314K Trade date Jun 2, 2026 Filed date Jun 3, 2026
Ordan Mark S. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -97K 314K Jun 2, 2026 Jun 3, 2026
Ordan Mark S. · Director Grant (A) 97K
Owned 411K Trade date Jun 2, 2026 Filed date Jun 3, 2026
Ordan Mark S. Director Grant (A) 97K 411K Jun 2, 2026 Jun 3, 2026
Rossi Kasandra H. · Officer Tax withholding or exercise payment (F) -$80K
Price $21.54 Qty -4K Owned 101K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Rossi Kasandra H. Officer Tax withholding or exercise payment (F) $21.54 -4K -$80K 101K Jun 1, 2026 Jun 3, 2026
Rossi Kasandra H. · Officer Grant (A) 32K
Owned 105K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Rossi Kasandra H. Officer Grant (A) 32K 105K Jun 1, 2026 Jun 3, 2026
Ordan Mark S. · Director Tax withholding or exercise payment (F) -$412K
Price $21.54 Qty -19K Owned 411K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Ordan Mark S. Director Tax withholding or exercise payment (F) $21.54 -19K -$412K 411K Jun 1, 2026 Jun 3, 2026
Ordan Mark S. · Director Grant (A) 127K
Owned 430K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Ordan Mark S. Director Grant (A) 127K 430K Jun 1, 2026 Jun 3, 2026
Neeb Don Gregory · Officer Tax withholding or exercise payment (F) -$172K
Price $21.54 Qty -8K Owned 137K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Neeb Don Gregory Officer Tax withholding or exercise payment (F) $21.54 -8K -$172K 137K Jun 1, 2026 Jun 3, 2026
Neeb Don Gregory · Officer Grant (A) 64K
Owned 145K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Neeb Don Gregory Officer Grant (A) 64K 145K Jun 1, 2026 Jun 3, 2026
Moore Mary Ann E. · Officer Tax withholding or exercise payment (F) -$257K
Price $21.54 Qty -12K Owned 96K Trade date Jun 1, 2026 Filed date Jun 3, 2026
Moore Mary Ann E. Officer Tax withholding or exercise payment (F) $21.54 -12K -$257K 96K Jun 1, 2026 Jun 3, 2026
Weis Shirley A. · Director Sell −$856K
Price $23.75 Qty −36K Owned 0 Trade date May 13, 2026 Filed date May 14, 2026
Weis Shirley A. Director Sell $23.75 −36K −$856K 0 May 13, 2026 May 14, 2026
McEachin Thomas · Director 2 operations 0
Owned 66K Trade date May 13, 2026 Filed date May 14, 2026
McEachin Thomas Director 2 operations 0 66K May 13, 2026 May 14, 2026
Moore Mary Ann E. · Officer Gift (G) -41K
Owned 108K Trade date May 11, 2026 Filed date May 13, 2026
Moore Mary Ann E. Officer Gift (G) -41K 108K May 11, 2026 May 13, 2026
Rucker Michael A. · Director Grant (A) 7K
Owned 66K Trade date May 7, 2026 Filed date May 11, 2026
Rucker Michael A. Director Grant (A) 7K 66K May 7, 2026 May 11, 2026
15 of 32
15 of 32 Sign in to continue to older insider transactions.

Pediatrix Medical Group, Inc. (MD) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 13.6M
% of shares outstanding 16.2% Filing date Jan 22, 2024
BlackRock Inc. 13.6M 16.2% Jan 22, 2024
Vanguard Group Inc 10.4M
% of shares outstanding 12.4% Filing date Feb 13, 2024
Vanguard Group Inc 10.4M 12.4% Feb 13, 2024
Rubric Capital Management LP 8.3M
% of shares outstanding 9.6% Filing date Nov 13, 2024
Rubric Capital Management LP 8.3M 9.6% Nov 13, 2024
Alliancebernstein L.P. 7.9M
% of shares outstanding 9.4% Filing date Feb 14, 2024
Alliancebernstein L.P. 7.9M 9.4% Feb 14, 2024
Dimensional Fund Advisors LP 4.2M
% of shares outstanding 5.1% Filing date Jul 14, 2026
Dimensional Fund Advisors LP 4.2M 5.1% Jul 14, 2026
Earnest Partners LLC 3.9M
% of shares outstanding 4.6% Filing date Jun 10, 2024
Earnest Partners LLC 3.9M 4.6% Jun 10, 2024
Starboard Value LP 3.3M
% of shares outstanding 4.0% Filing date Jan 20, 2023
Starboard Value LP 3.3M 4.0% Jan 20, 2023
Arrowmark Colorado Holdings LLC 2.7M
% of shares outstanding 3.1% Filing date Feb 14, 2022
Arrowmark Colorado Holdings LLC 2.7M 3.1% Feb 14, 2022
8 of 9

Pediatrix Medical Group, Inc. (MD) ownership FAQ

Who owns MD?

270 reporting institutions disclosed MD position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.