Pediatrix Medical Group, Inc. 13F holders
Of the 44 funds followed here, 5 reported a position in Pediatrix Medical Group, Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 2.2 million shares worth $56.4 million, 0.0% of its reported book. New this quarter: Millennium Management. Sold out: Citadel Advisors.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 2,226,028 | $56.4 million | 0.0% | +38,061 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 1,287,300 | $32.6 million | 0.0% | -245,000 | trimmed | 30 June 2026 | 13F |
| FMR LLC | 741,386 | $18.8 million | 0.0% | -1,526,048 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 55,124 | $1.4 million | 0.0% | +55,124 | new | 30 June 2026 | 13F |
| Two Sigma Investments | 45,472 | $1.2 million | 0.0% | -2,900 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 0 | $0 | 0.0% | -73,000 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 3 September 2026 | 13G | Vanguard Portfolio Management and 1 other | 6.3 million | 7.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 3 September 2026 | 13G | Vanguard Capital Management and 1 other | 4.3 million | 5.2% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 3 September 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 14 July 2026 | 13G | Dimensional Fund Advisors LP and 1 other | 4.2 million | 5.1% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 11 September 2026 | 728 | $26.73 | SEC |
| 9 September 2026 | 37,623 | $26.94 | SEC |
| 8 September 2026 | 99 | $27.03 | SEC |
| 4 September 2026 | 31,927 | $26.88 | SEC |
| 3 September 2026 | 32,005 | $26.86 | SEC |
| 2 September 2026 | 20 | $26.47 | SEC |
| 27 August 2026 | 1,579 | $26.95 | SEC |
| 25 August 2026 | 19 | $26.60 | SEC |
| 7 August 2026 | 48 | $26.51 | SEC |
| 6 August 2026 | 98 | $25.99 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.
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Largest in the window: 37,623 on 9 September 2026. A fail is an operational fact about settlement, not a position.Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to MD by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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