Pediatrix Medical Group (MD)
Pediatrix Medical Group on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as services-hospitals.
4.6M
Short interest
settlement 2026-09-30
6.0
Days to cover
-0.9 days vs prior
47.2%
Short share of volume
2026-10-23
18,936
Fails to deliver
settlement 2026-09-21
Mon 2 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in MD is 4,610,228 shares, down 207,262 shares over the last month. Over the last 48 readings it ranged from 1,393,134 shares (15 May 2025) to 4,942,920 shares (14 August 2026). The latest reading sits at the top of that range. At the reported average volume of 762K shares a day that is 6.0 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/md" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 4,610,228 | -2.5% | 761,576 | 6.05 |
| 2026-09-15 | 4,730,174 | -1.8% | 685,069 | 6.90 |
| 2026-08-31 | 4,817,490 | -2.5% | 762,513 | 6.32 |
| 2026-08-14 | 4,942,920 | +19.4% | 922,389 | 5.36 |
| 2026-07-31 | 4,139,091 | -15.7% | 623,866 | 6.63 |
| 2026-07-15 | 4,908,297 | +29.0% | 905,748 | 5.42 |
| 2026-06-30 | 3,803,637 | +1.1% | 928,286 | 4.10 |
| 2026-06-15 | 3,762,756 | +12.0% | 685,438 | 5.49 |
| 2026-05-29 | 3,359,966 | -3.0% | 755,292 | 4.45 |
| 2026-05-15 | 3,463,315 | +1.7% | 1,091,147 | 3.17 |
| 2026-04-30 | 3,404,198 | -1.5% | 599,769 | 5.68 |
| 2026-04-15 | 3,455,256 | -2.0% | 679,036 | 5.09 |
| 2026-03-31 | 3,525,349 | +16.0% | 1,022,627 | 3.45 |
| 2026-03-13 | 3,038,001 | +12.0% | 832,587 | 3.65 |
| 2026-02-27 | 2,713,520 | -8.4% | 1,469,864 | 1.85 |
| 2026-02-13 | 2,963,355 | +6.0% | 497,295 | 5.96 |
| 2026-01-30 | 2,795,305 | -8.1% | 589,754 | 4.74 |
| 2026-01-15 | 3,041,843 | +0.2% | 529,771 | 5.74 |
| 2025-12-31 | 3,035,860 | -9.6% | 886,750 | 3.42 |
| 2025-12-15 | 3,358,967 | +6.3% | 985,578 | 3.41 |
| 2025-11-28 | 3,161,380 | +8.3% | 1,248,696 | 2.53 |
| 2025-11-14 | 2,919,400 | -3.3% | 1,331,559 | 2.19 |
| 2025-10-31 | 3,018,804 | +9.9% | 694,403 | 4.35 |
| 2025-10-15 | 2,746,734 | +7.6% | 792,564 | 3.47 |
| 2025-09-30 | 2,553,030 | +6.7% | 709,298 | 3.60 |
| 2025-09-15 | 2,393,237 | +24.2% | 736,134 | 3.25 |
| 2025-08-29 | 1,926,988 | -5.6% | 803,650 | 2.40 |
| 2025-08-15 | 2,041,208 | +11.4% | 1,059,851 | 1.93 |
| 2025-07-31 | 1,831,551 | -10.0% | 630,832 | 2.90 |
| 2025-07-15 | 2,034,279 | -12.8% | 509,248 | 3.99 |
| 2025-06-30 | 2,332,742 | +7.1% | 730,431 | 3.19 |
| 2025-06-13 | 2,178,973 | +25.4% | 678,324 | 3.21 |
| 2025-05-30 | 1,737,300 | +24.7% | 1,388,702 | 1.25 |
| 2025-05-15 | 1,393,134 | -28.6% | 1,181,508 | 1.18 |
| 2025-04-30 | 1,949,793 | +3.8% | 561,291 | 3.47 |
| 2025-04-15 | 1,878,726 | +1.1% | 683,680 | 2.75 |
| 2025-03-31 | 1,858,061 | -35.7% | 800,136 | 2.32 |
| 2025-03-14 | 2,891,203 | +4.3% | 640,890 | 4.51 |
| 2025-02-28 | 2,772,713 | +7.7% | 1,018,603 | 2.72 |
| 2025-02-14 | 2,575,560 | +8.5% | 430,379 | 5.98 |
| 2025-01-31 | 2,373,565 | -0.8% | 482,540 | 4.92 |
| 2025-01-15 | 2,391,704 | +3.3% | 490,315 | 4.88 |
| 2024-12-31 | 2,315,166 | +0.9% | 1,003,849 | 2.31 |
| 2024-12-13 | 2,295,108 | -23.1% | 590,672 | 3.89 |
| 2024-11-29 | 2,982,450 | -20.9% | 750,735 | 3.97 |
| 2024-11-15 | 3,772,713 | -4.3% | 1,002,056 | 3.76 |
| 2024-10-31 | 3,943,253 | -10.1% | 561,777 | 7.02 |
| 2024-10-15 | 4,385,647 | +3.6% | 569,054 | 7.71 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of MD volume is 47.2%, down 3.0 points over the last five sessions. Over the last 30 readings it ranged from 32.1% (7 October 2026) to 77.2% (9 October 2026). The latest reading is 14.0 points below the 30-session average of 61.2%, on 180K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 85K | 180K | 47.2% | 0 |
| 2026-10-22 | 244K | 373K | 65.3% | 0 |
| 2026-10-21 | 93K | 169K | 54.8% | 0 |
| 2026-10-20 | 111K | 220K | 50.2% | 0 |
| 2026-10-19 | 105K | 158K | 66.6% | 0 |
| 2026-10-16 | 107K | 214K | 50.1% | 0 |
| 2026-10-15 | 85K | 153K | 55.2% | 0 |
| 2026-10-14 | 104K | 233K | 44.5% | 0 |
| 2026-10-13 | 80K | 159K | 50.3% | 216 |
| 2026-10-12 | 107K | 142K | 75.7% | 0 |
| 2026-10-09 | 73K | 94K | 77.2% | 11 |
| 2026-10-08 | 106K | 150K | 70.5% | 200 |
| 2026-10-07 | 85K | 266K | 32.1% | 134 |
| 2026-10-06 | 100K | 219K | 45.7% | 0 |
| 2026-10-05 | 111K | 150K | 74.0% | 0 |
| 2026-10-02 | 137K | 179K | 76.3% | 0 |
| 2026-10-01 | 148K | 249K | 59.3% | 0 |
| 2026-09-30 | 126K | 195K | 64.4% | 0 |
| 2026-09-29 | 138K | 210K | 65.6% | 0 |
| 2026-09-28 | 87K | 157K | 55.5% | 0 |
| 2026-09-25 | 63K | 119K | 52.6% | 0 |
| 2026-09-24 | 117K | 210K | 55.8% | 0 |
| 2026-09-23 | 142K | 190K | 74.9% | 0 |
| 2026-09-22 | 147K | 273K | 53.8% | 0 |
| 2026-09-21 | 111K | 153K | 72.4% | 0 |
| 2026-09-18 | 162K | 213K | 75.8% | 0 |
| 2026-09-17 | 125K | 179K | 70.1% | 0 |
| 2026-09-16 | 106K | 151K | 70.6% | 470 |
| 2026-09-15 | 122K | 219K | 55.8% | 0 |
| 2026-09-14 | 143K | 196K | 73.3% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 21 September 2026, the fails-to-deliver balance in MD is 18,936 shares, down 31,252 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (27 July 2026) to 50,188 shares (16 September 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-21 | 18,936 | $25.93 | $491K |
| 2026-09-16 | 50,188 | $26.69 | $1.3M |
| 2026-09-11 | 728 | $26.73 | $19K |
| 2026-09-09 | 37,623 | $26.94 | $1.0M |
| 2026-09-08 | 99 | $27.03 | $3K |
| 2026-09-04 | 31,927 | $26.88 | $858K |
| 2026-09-03 | 32,005 | $26.86 | $860K |
| 2026-09-02 | 20 | $26.47 | $529 |
| 2026-08-27 | 1,579 | $26.95 | $43K |
| 2026-08-25 | 19 | $26.60 | $505 |
| 2026-08-07 | 48 | $26.51 | $1K |
| 2026-08-06 | 98 | $25.99 | $3K |
| 2026-07-27 | 2 | $26.26 | $53 |
| 2026-07-20 | 1,410 | $26.13 | $37K |
| 2026-07-16 | 158 | $25.88 | $4K |
| 2026-07-02 | 72 | $26.14 | $2K |
| 2026-06-26 | 31 | $24.11 | $747 |
| 2026-06-16 | 479 | $24.37 | $12K |
| 2026-06-15 | 125 | $24.30 | $3K |
| 2026-06-11 | 588 | $23.56 | $14K |
| 2026-05-26 | 2,624 | $21.26 | $56K |
| 2026-05-15 | 1,308 | $23.48 | $31K |
| 2026-05-07 | 8 | $22.21 | $178 |
| 2026-05-06 | 694 | $20.83 | $14K |
| 2026-04-15 | 136 | $22.61 | $3K |
| 2026-04-14 | 11 | $21.81 | $240 |
| 2026-04-13 | 39 | $21.45 | $837 |
| 2026-04-02 | 72 | $20.70 | $1K |
| 2026-04-01 | 439 | $21.39 | $9K |
| 2026-03-31 | 116 | $20.80 | $2K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for MD in the last 90 days. The most recent filings are listed below. Latest filing: Linynsky Laura A (Director) on 2026-09-10.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-10 | Linynsky Laura A | Director | Returned to company | 6K | $26.82 | $161K | 34K |
| 2026-08-14 | Young Sylvia Jean | Director | Returned to company | 19K | $26.62 | $492K | 30K |
| 2026-08-12 | Weis Shirley A | Director | Grant | 472 | $26.50 | $13K | 19K |
| 2026-08-12 | Starcher John M. Jr. | Director | Grant | 472 | $26.50 | $13K | 74K |
| 2026-08-12 | Rucker Michael A. | Director | Grant | 472 | $26.50 | $13K | 67K |
| 2026-08-12 | Young Sylvia Jean | Director | Grant | 472 | $26.50 | $13K | 48K |
| 2026-08-12 | SANSONE GUY P | Director | Grant | 472 | $26.50 | $13K | 87K |
| 2026-08-12 | Newman Kurt Douglas | Director | Grant | 472 | $26.50 | $13K | 17K |
| 2026-08-12 | McEachin Thomas | Director | Grant | 472 | $26.50 | $13K | 8K |
| 2026-08-12 | Linynsky Laura A | Director | Grant | 472 | $26.50 | $13K | 40K |
| 2026-06-22 | Haddock David | EVP, GC & Corp Sec | Grant | 20K | $0.00 | $0 | 20K |
| 2026-06-09 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift | 18K | $0.00 | $0 | 112K |
| 2026-06-09 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift | 18K | $0.00 | $0 | 78K |
| 2026-06-02 | ORDAN MARK S | Chief Executive Officer | Grant | 97K | $0.00 | $0 | 411K |
| 2026-06-02 | ORDAN MARK S | Chief Executive Officer | Returned to company | 97K | $0.00 | $0 | 314K |
| 2026-06-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Tax withholding | 4K | $21.54 | $80K | 101K |
| 2026-06-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Grant | 32K | $0.00 | $0 | 105K |
| 2026-06-01 | ORDAN MARK S | Chief Executive Officer | Tax withholding | 19K | $21.54 | $412K | 411K |
| 2026-06-01 | ORDAN MARK S | Chief Executive Officer | Grant | 127K | $0.00 | $0 | 430K |
| 2026-06-01 | Neeb Don Gregory | EVP, Chief Invest & Strategy | Tax withholding | 8K | $21.54 | $172K | 137K |
| 2026-06-01 | Neeb Don Gregory | EVP, Chief Invest & Strategy | Grant | 64K | $0.00 | $0 | 145K |
| 2026-06-01 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Tax withholding | 12K | $21.54 | $257K | 96K |
| 2026-05-13 | McEachin Thomas | Director | Gift | 11K | $0.00 | $0 | 66K |
| 2026-05-13 | Weis Shirley A | Director | Sell | 36K | $23.75 | $856K | 0 |
| 2026-05-13 | McEachin Thomas | Director | Gift | 11K | $0.00 | $0 | 7K |
| 2026-05-11 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift | 41K | $0.00 | $0 | 108K |
| 2026-05-07 | Rucker Michael A. | Director | Grant | 7K | $0.00 | $0 | 66K |
| 2026-05-07 | SANSONE GUY P | Director | Grant | 7K | $0.00 | $0 | 87K |
| 2026-05-07 | Young Sylvia Jean | Director | Grant | 7K | $0.00 | $0 | 48K |
| 2026-05-07 | Starcher John M. Jr. | Director | Grant | 7K | $0.00 | $0 | 73K |
| 2026-05-07 | Weis Shirley A | Director | Grant | 7K | $0.00 | $0 | 19K |
| 2026-05-07 | Newman Kurt Douglas | Director | Grant | 7K | $0.00 | $0 | 17K |
| 2026-05-07 | McEachin Thomas | Director | Grant | 7K | $0.00 | $0 | 19K |
| 2026-05-07 | Linynsky Laura A | Director | Grant | 7K | $0.00 | $0 | 39K |
| 2026-03-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Tax withholding | 4K | $19.85 | $73K | 73K |
| 2026-03-01 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Tax withholding | 27K | $19.85 | $535K | 149K |
| 2026-03-01 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Grant | 40K | $0.00 | $0 | 176K |
| 2025-12-15 | ORDAN MARK S | Chief Executive Officer | Sell | 23K | $22.41 | $515K | 303K |
| 2025-11-17 | Rucker Michael A. | Director | Sell | 10K | $23.00 | $241K | 59K |
| 2025-11-06 | Linynsky Laura A | Director | Sell | 10K | $21.65 | $217K | 32K |
| 2025-08-20 | McEachin Thomas | Director | Gift | 625 | $0.00 | $0 | 11K |
| 2025-08-19 | McEachin Thomas | Director | Gift | 54K | $0.00 | $0 | 12K |
| 2025-08-01 | Newman Kurt Douglas | Director | Grant | 10K | $0.00 | $0 | 10K |
| 2025-08-01 | Neeb Don Gregory | EVP, Chief Invest & Strategy | Grant | 81K | $0.00 | $0 | 81K |
| 2025-06-10 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift | 10K | $0.00 | $0 | 136K |
| 2025-06-01 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Grant | 53K | $0.00 | $0 | 153K |
| 2025-06-01 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Tax withholding | 7K | $14.15 | $95K | 147K |
| 2025-06-01 | ORDAN MARK S | Chief Executive Officer | Grant | 194K | $0.00 | $0 | 326K |
| 2025-06-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Tax withholding | 677 | $14.15 | $10K | 77K |
| 2025-06-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Grant | 27K | $0.00 | $0 | 78K |
| 2025-05-23 | Weis Shirley A | Director | Gift | 18K | $0.00 | $0 | 11K |
| 2025-05-09 | ORDAN MARK S | Chief Executive Officer | Tax withholding | 7K | $14.44 | $104K | 131K |
| 2025-05-08 | Starcher John M. Jr. | Director | Grant | 11K | $0.00 | $0 | 66K |
| 2025-05-08 | SANSONE GUY P | Director | Grant | 11K | $0.00 | $0 | 80K |
| 2025-05-08 | Weis Shirley A | Director | Grant | 11K | $0.00 | $0 | 30K |
| 2025-05-08 | Rucker Michael A. | Director | Grant | 11K | $0.00 | $0 | 70K |
| 2025-05-08 | McEachin Thomas | Director | Grant | 11K | $0.00 | $0 | 66K |
| 2025-05-08 | Linynsky Laura A | Director | Grant | 11K | $0.00 | $0 | 42K |
| 2025-05-08 | Young Sylvia Jean | Director | Grant | 11K | $0.00 | $0 | 41K |
| 2025-03-06 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Gift | 26K | $0.00 | $0 | 100K |
| 2025-03-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Tax withholding | 4K | $14.77 | $55K | 51K |
| 2025-03-01 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Tax withholding | 9K | $14.77 | $133K | 127K |
| 2025-02-25 | Weis Shirley A | Director | Gift | 18K | $0.00 | $0 | 18K |
| 2024-12-01 | Rossi Kasandra H | EVP, CFO and Treasurer | Grant | 11K | $0.00 | $0 | 55K |
| 2024-11-13 | ORDAN MARK S | Director | Sell | 28K | $15.35 | $424K | 139K |
| 2024-11-08 | Moore Mary Ann E | EVP, GC, Chief Admin Off & Sec | Sell | 8K | $16.00 | $130K | 136K |
| 2024-08-30 | Swift James D | Chief Executive Officer | Sell | 11K | $10.79 | $120K | 170K |
| 2024-08-27 | Linynsky Laura A | Director | Sell | 7K | $11.16 | $78K | 31K |
| 2024-08-12 | Richards C Marc | EVP, Chief Financial Officer | Sell | 17K | $10.08 | $176K | 175K |
| 2024-08-09 | Richards C Marc | EVP, Chief Financial Officer | Sell | 33K | $10.08 | $328K | 193K |
| 2024-06-01 | Moore Mary Ann E | EVP, General Counsel & Sec | Grant | 68K | $0.00 | $0 | 144K |
| 2024-06-01 | Wood Lee | EVP, Natl & Market Operations | Tax withholding | 813 | $7.31 | $6K | 117K |
| 2024-06-01 | Wood Lee | EVP, Natl & Market Operations | Grant | 51K | $0.00 | $0 | 118K |
| 2024-06-01 | Richards C Marc | EVP, Chief Financial Officer | Grant | 96K | $0.00 | $0 | 225K |
| 2024-06-01 | Pickert Curtis | EVP, Chief Operating Officer | Gift | 2K | $0.00 | $0 | 118K |
| 2024-06-01 | Pickert Curtis | EVP, Chief Operating Officer | Tax withholding | 751 | $7.31 | $5K | 121K |
| 2024-06-01 | Pickert Curtis | EVP, Chief Operating Officer | Grant | 68K | $0.00 | $0 | 121K |
| 2024-06-01 | Swift James D | Chief Executive Officer | Grant | 105K | $0.00 | $0 | 181K |
| 2024-05-09 | ORDAN MARK S | Director | Grant | 18K | $0.00 | $0 | 166K |
| 2024-05-09 | McEachin Thomas | Director | Grant | 18K | $0.00 | $0 | 55K |
| 2024-05-09 | Rucker Michael A. | Director | Grant | 18K | $0.00 | $0 | 58K |
| 2024-05-09 | SANSONE GUY P | Director | Grant | 18K | $0.00 | $0 | 68K |
| 2024-05-09 | Linynsky Laura A | Director | Grant | 18K | $0.00 | $0 | 38K |
| 2024-05-09 | Weis Shirley A | Director | Grant | 18K | $0.00 | $0 | 36K |
| 2024-05-09 | Young Sylvia Jean | Director | Grant | 18K | $0.00 | $0 | 29K |
| 2024-05-09 | Starcher John M. Jr. | Director | Grant | 18K | $0.00 | $0 | 55K |
| 2024-03-13 | Pickert Curtis | EVP, Chief Operating Officer | Gift | 13K | $0.00 | $0 | 53K |
| 2024-03-01 | Moore Mary Ann E | EVP, General Counsel & Sec | Tax withholding | 6K | $9.15 | $54K | 76K |
| 2024-03-01 | Richards C Marc | EVP, Chief Financial Officer | Tax withholding | 21K | $9.15 | $196K | 130K |
| 2024-03-01 | Wood Lee | EVP, Natl & Market Operations | Tax withholding | 5K | $9.15 | $45K | 67K |
| 2024-03-01 | Pickert Curtis | EVP, Chief Operating Officer | Tax withholding | 9K | $9.15 | $84K | 66K |
| 2024-03-01 | Swift James D | Chief Executive Officer | Tax withholding | 15K | $9.15 | $137K | 76K |
| 2023-12-14 | Swift James D | Chief Executive Officer | Sell | 6K | $9.58 | $55K | 91K |
| 2023-12-14 | Moore Mary Ann E | EVP, General Counsel & Sec | Sell | 970 | $9.62 | $9K | 81K |
| 2023-12-14 | Moore Mary Ann E | EVP, General Counsel & Sec | Sell | 1K | $9.62 | $11K | 16K |
| 2023-06-14 | Swift James D | Chief Executive Officer | Sell | 13K | $14.14 | $187K | 97K |
| 2023-06-07 | Pickert Curtis | EVP, Chief Operating Officer | Gift | 1K | $0.00 | $0 | 75K |
| 2023-06-01 | Wood Lee | EVP, Natl & Market Operations | Tax withholding | 407 | $13.30 | $5K | 72K |
| 2023-06-01 | Pickert Curtis | EVP, Chief Operating Officer | Tax withholding | 376 | $13.30 | $5K | 76K |
| 2023-05-25 | ORDAN MARK S | Director | Sell | 33K | $13.26 | $438K | 148K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON4 Form 144 notices on file for MD worth $1.8M at the prices reported; 0 in the last 90 days worth $0. Latest: Weis Shirley A filed on 2026-05-13 to sell 36,028 shares ($853K) from 2026-05-13.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-05-13 | Weis Shirley ADirector | 36K | $853K | 0.044% | 2026-05-13 | Robert W. Baird & Co. |
| 2025-12-15 | ORDAN MARK SDirector | 23K | $518K | 0.027% | 2025-12-15 | Piper Sandler & Co Inc |
| 2025-11-17 | Rucker Michael A.Director | 10K | $241K | 0.012% | 2025-11-17 | Robert W. Baird |
| 2025-11-06 | Laura A LinynskyDirector | 10K | $216K | 0.012% | 2025-11-06 | Merrill Lynch |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON3 holders report 5% or more of MD in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 7.5% of the class (6,278,234 shares), filed 2026-09-03 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-09-03 | 13G | Vanguard Portfolio Managementinvestment adviser | 6.3M | 7.5% | 2026-03-31 |
| 2026-09-03 | 13G | Vanguard Capital Managementinvestment adviser | 4.3M | 5.2% | 2026-03-31 |
| 2026-09-03 | 13G/Ano. 13 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-07-14 | 13G | Dimensional Fund Advisors LPinvestment adviser | 4.2M | 5.1% | 2026-06-30 |
13F holders
Tracked managers holding MD at their latest 13F. JSON5 of the 30 tracked managers held MD at their latest 13F, $87.5M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $40.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 1.6M | $40.9M | 0.02% | -95K |
| Renaissance Technologies | 2026-06-30 | 1.3M | $32.6M | 0.04% | -245K |
| AQR Capital Management | 2026-06-30 | 471K | $11.5M | 0.00% | -89K |
| Millennium Management | 2026-06-30 | 55K | $1.4M | 0.00% | new |
| Two Sigma Investments | 2026-06-30 | 45K | $1.2M | 0.00% | -3K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Pediatrix Medical Group in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Pediatrix Medical Group (MD), SEC CIK 893949, listed on NYSE, classified by the SEC as services-hospitals. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-21.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-05-13.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-09-03.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-04.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-10.JSON and CSV
- Company record
- EDGAR filing index for CIK 893949Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of MD is sold short?
4,610,228 shares were held short at the 2026-09-30 settlement, 6.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is MD's daily short volume?
On 2026-10-23, 84,844 of the 179,901 MD shares reported to FINRA were sold short, 47.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does MD have fails to deliver?
The SEC's latest file shows 18,936 MD shares failed to deliver at settlement 2026-09-21. Fails are reported per settlement date and published twice a month with a lag.
Are MD insiders buying or selling?
No open-market insider trades were reported for MD in the last 90 days. The most recent filings are listed below. Latest filing: Linynsky Laura A (Director) on 2026-09-10.
Have MD insiders filed to sell?
4 Form 144 notices on file for MD worth $1.8M at the prices reported; 0 in the last 90 days worth $0. Latest: Weis Shirley A filed on 2026-05-13 to sell 36,028 shares ($853K) from 2026-05-13.
Who owns 5% or more of MD?
3 holders report 5% or more of MD in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 7.5% of the class (6,278,234 shares), filed 2026-09-03 for an event on 2026-03-31.
Which tracked 13F managers own MD?
5 of the 30 tracked 13F managers held MD shares at their latest filing, $87.5M in all. The largest: D. E. Shaw & Co. (1.6M shares, $40.9M), Renaissance Technologies (1.3M shares, $32.6M), Cliff Asness's AQR Capital Management (471K shares, $11.5M), Izzy Englander's Millennium Management (55K shares, $1.4M), Two Sigma Investments (45K shares, $1.2M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.