Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MD held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 13.6M | $290.4M | +0.1% | 16.340% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2M | $131.6M | β | 7.408% | 0.01% |
| 3 | AMERICAN CENTURY COMPANIES INC | 3.9M | $84.0M | +6.1% | 4.725% | 0.04% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 3.9M | $82.5M | +8.1% | 4.643% | 0.02% |
| 5 | VICTORY CAPITAL MANAGEMENT INC | 3.8M | $82.2M | +0.6% | 4.625% | 0.05% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 3.7M | $78.2M | β | 4.401% | 0.00% |
| 7 | STATE STREET CORP | 3.4M | $72.3M | +2.0% | 4.067% | 0.00% |
| 8 | FMR LLC | 2.3M | $48.5M | -6.6% | 2.729% | 0.00% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $46.8M | +0.3% | 2.634% | 0.00% |
| 10 | WASATCH ADVISORS INC | 2.1M | $43.9M | β | 2.468% | 0.29% |
| 11 | D. E. Shaw & Co., Inc. | 1.7M | $36.5M | -7.8% | 2.057% | 0.03% |
| 12 | RENAISSANCE TECHNOLOGIES LLC | 1.5M | $32.8M | +12.9% | 1.845% | 0.05% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.4M | $30.9M | -7.0% | 1.738% | 0.00% |
| 14 | MORGAN STANLEY | 1.3M | $26.8M | -4.1% | 1.506% | 0.00% |
| 15 | FULLER & THALER ASSET MANAGEMENT, INC. | 1.2M | $26.3M | -0.0% | 1.480% | 0.09% |
| 16 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 971K | $20.8M | -6.0% | 1.168% | 0.15% |
| 17 | Nuveen, LLC | 953K | $20.4M | -20.6% | 1.147% | 0.01% |
| 18 | Allspring Global Investments Holdings, LLC | 975K | $20.2M | +52.5% | 1.174% | 0.03% |
| 19 | Invesco Ltd. | 922K | $19.7M | -15.4% | 1.110% | 0.00% |
| 20 | NORTHERN TRUST CORP | 900K | $19.3M | +3.2% | 1.084% | 0.00% |
| 21 | GOLDMAN SACHS GROUP INC | 851K | $18.2M | +8.2% | 1.025% | 0.00% |
| 22 | ALLIANCEBERNSTEIN L.P. | 771K | $16.5M | -5.5% | 0.928% | 0.01% |
| 23 | Rockefeller Capital Management L.P. | 762K | $16.3M | +28.3% | 0.918% | 0.03% |
| 24 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 752K | $16.1M | +1.6% | 0.905% | 0.32% |
| 25 | Dana Investment Advisors, Inc. | 727K | $15.6M | +12.1% | 0.875% | 0.46% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in MD β a direct measure of their conviction.
Filings activity in MD during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new MD position in Q1 2026
Institutions that fully closed their MD position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 287 | 2.0% | 84.65% | 0.14 pp | $1.71B | 0.2% |
| Q4 2025 | 293 | +11% | 84.79% | +19.28 pp | $1.71B | +29% |
| Q3 2025 | 264 | +1.1% | 65.51% | +9.40 pp | $1.32B | +17% |
| Q2 2025 | 261 | +12% | 56.11% | 0.25 pp | $1.13B | 0.4% |
| Q1 2025 | 234 | +3.5% | 56.36% | +4.05 pp | $1.14B | +7.7% |
| Q4 2024 | 226 | +5.6% | 52.31% | +4.29 pp | $1.06B | +8.9% |
| Q3 2024 | 214 | 4.9% | 48.02% | 64.95 pp | $969M | 57% |
| Q2 2024 | 225 | β | 112.97% | β | $2.28B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MD stock.
Based on Q1 2026 13F filings, institutional ownership of Pediatrix Medical Group, Inc. stands at 84.7%, held across 287 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MD, with approximately 13,574,373 shares worth $0.29B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of MD, including RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for MD is 44 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
41 institutions opened new positions in MD during Q1 2026, while 47 fully exited. 104 added to existing positions and 98 trimmed.
MD institutional ownership fell by 0.14 percentage points quarter-over-quarter, with a net change of -6 holders.
The top 10 institutions account for 56.2% of all reported 13F value in MD, and the top 25 account for 75.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Pediatrix Medical Group, Inc. (MD) Institutional Ownership