Who owns Pediatrix Medical Group (MD)
Which tracked institutional funds hold MD, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MD company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
98 tracked funds added or opened MD while 34 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MD’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes MD more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MD divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 278 tracked filers holding MD, 143 increased or opened the position and 147 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MD between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 12
- Edgestream Partners, L.P.$5M
- Integrated Quantitative Investments LLC$2M
- Inspire Investing, LLC$2M
- CWA Asset Management Group, LLC$2M
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$1M
- MILLENNIUM MANAGEMENT LLC$1M
Full exits 20
- LSV ASSET MANAGEMENT$12M
- CSM Advisors, LLC$8M
- LORD, ABBETT & CO. LLC$5M
- BESSEMER GROUP INC$3M
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$2M
- GREAT LAKES ADVISORS, LLC$2M
Largest adds
- BlackRock, Inc.$153M
- DIMENSIONAL FUND ADVISORS LP$24M
- Allspring Global Investments Holdings, LLC$22M
- VANGUARD PORTFOLIO MANAGEMENT LLC$20M
- WASATCH ADVISORS LP$19M
- Rockefeller Capital Management L.P.$18M
Largest trims
- FMR LLC$30M
- AMERICAN CENTURY COMPANIES INC$28M
- JANE STREET GROUP, LLC$4M
- CastleKnight Management LP$3M
- Engineers Gate Manager LP$1M
- ArrowMark Colorado Holdings LLC$1M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 13,714,275 | $347M | 17.7% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 5,985,147 | $152M | 7.7% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 4,220,311 | $107M | 5.4% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 3,620,040 | $92M | 4.7% | 2026-Q2 |
| STATE STREET CORP added | 3,533,248 | $89M | 4.6% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 3,416,913 | $87M | 4.4% | 2026-Q2 |
| WASATCH ADVISORS LP added | 2,498,884 | $63M | 3.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,226,028 | $56M | 2.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 2,192,017 | $56M | 2.8% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,721,451 | $44M | 2.2% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 1,618,910 | $42M | 2.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 1,613,100 | $41M | 2.1% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 1,338,592 | $34M | 1.7% | 2026-Q2 |
| MORGAN STANLEY added | 1,328,477 | $34M | 1.7% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,294,185 | $33M | 1.7% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,287,300 | $33M | 1.7% | 2026-Q2 |
| Invesco Ltd. added | 1,173,609 | $30M | 1.5% | 2026-Q2 |
| Public Sector Pension Investment Board added | 987,860 | $25M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP added | 934,307 | $24M | 1.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 914,348 | $23M | 1.2% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 912,380 | $23M | 1.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 868,272 | $22M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 825,636 | $21M | 1.1% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 761,642 | $19M | 1.0% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 761,010 | $16M | 0.8% | 2026-Q2 |
| FMR LLC trimmed | 741,386 | $19M | 1.0% | 2026-Q2 |
| Dana Investment Advisors, Inc. trimmed | 681,748 | $17M | 0.9% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 663,400 | $17M | 0.9% | 2026-Q2 |
| OBERWEIS ASSET MANAGEMENT INC/ trimmed | 623,087 | $16M | 0.8% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 619,935 | $16M | 0.8% | 2026-Q2 |
| Tidal Investments LLC added | 616,048 | $16M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 564,419 | $14M | 0.7% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 563,461 | $14M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 533,800 | $14M | 0.7% | 2026-Q2 |
| Empowered Funds, LLC trimmed | 500,118 | $13M | 0.6% | 2026-Q2 |
| Allianz Asset Management GmbH added | 494,286 | $13M | 0.6% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 471,289 | $12M | 0.6% | 2026-Q2 |
| Hillsdale Investment Management Inc. added | 464,340 | $12M | 0.6% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 461,334 | $12M | 0.6% | 2026-Q2 |
| UBS Group AG added | 435,819 | $11M | 0.6% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 427,404 | $11M | 0.6% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 421,256 | $11M | 0.5% | 2026-Q2 |
| CastleKnight Management LP trimmed | 405,866 | $10M | 0.5% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP trimmed | 402,140 | $10M | 0.5% | 2026-Q2 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 389,080 | $10M | 0.5% | 2026-Q2 |
| Aristotle Capital Boston, LLC trimmed | 318,184 | $8M | 0.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 309,413 | $8M | 0.4% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 300,671 | $8M | 0.4% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 283,687 | $7M | 0.4% | 2026-Q2 |
| Phocas Financial Corp. trimmed | 248,762 | $6M | 0.3% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 239,421 | $6M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 227,836 | $6M | 0.3% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 220,149 | $5M | 0.3% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 209,894 | $5M | 0.3% | 2026-Q2 |
| ArrowMark Colorado Holdings LLC trimmed | 202,555 | $5M | 0.3% | 2026-Q2 |
| RITHOLTZ WEALTH MANAGEMENT added | 189,431 | $5M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 187,732 | $5M | 0.2% | 2026-Q2 |
| Edgestream Partners, L.P. added | 184,928 | $5M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 184,908 | $5M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 183,099 | $5M | 0.2% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 179,784 | $5M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 177,038 | $4M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 166,700 | $4M | 0.2% | 2026-Q2 |
| MARTINGALE ASSET MANAGEMENT L P trimmed | 154,232 | $4M | 0.2% | 2026-Q2 |
| CLARK ESTATES INC/NY added | 153,000 | $4M | 0.2% | 2026-Q2 |
| Bridge City Capital, LLC trimmed | 146,000 | $4M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 129,574 | $3M | 0.2% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 127,982 | $3M | 0.2% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 121,250 | $3M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 120,439 | $3M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 120,378 | $3M | 0.2% | 2026-Q2 |
| RBF Capital, LLC | 115,000 | $3M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 114,240 | $3M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 112,020 | $3M | 0.1% | 2026-Q2 |
| ZACKS INVESTMENT MANAGEMENT added | 109,134 | $3M | 0.1% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC trimmed | 109,110 | $3M | 0.1% | 2026-Q2 |
| BURNEY CO/ added | 104,951 | $3M | 0.1% | 2026-Q2 |
| Integrated Quantitative Investments LLC added | 97,040 | $2M | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC added | 95,910 | $2M | 0.1% | 2026-Q2 |
| Inspire Investing, LLC added | 94,392 | $2M | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 88,425 | $2M | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 88,090 | $2M | 0.1% | 2026-Q2 |
| CWA Asset Management Group, LLC new | 88,074 | $2M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 86,459 | $2M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 86,424 | $2M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 83,763 | $2M | 0.1% | 2026-Q2 |
| Gotham Asset Management, LLC trimmed | 82,776 | $2M | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 76,664 | $2M | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 73,605 | $2M | 0.1% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 73,142 | $2M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 73,041 | $2M | 0.1% | 2026-Q2 |
| LPL Financial LLC added | 70,400 | $2M | 0.1% | 2026-Q2 |
| Legato Capital Management LLC added | 68,916 | $2M | 0.1% | 2026-Q2 |
| Creative Planning added | 67,488 | $2M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 67,107 | $2M | 0.1% | 2026-Q2 |
| HUSSMAN STRATEGIC ADVISORS, INC. | 63,000 | $2M | 0.1% | 2026-Q2 |
| VARCOV Co. added | 60,414 | $2M | 0.1% | 2026-Q2 |
| NOMURA HOLDINGS INC trimmed | 60,246 | $2M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 60,017 | $2M | 0.1% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 59,906 | $1M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.