Pediatrix Medical Group, Inc.
DE ˙ DB ˙ US58502B1061
18,70 € ↑0,20 (1,08%)
2026-06-04
DEL PRIS
SecurityDE:PDC / Pediatrix Medical Group, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership1,532,300 shares
Latest Disclosed Value $ 32,775,897
Renaissance Technologies Llc reports 12.86% increase in ownership of PDC / Pediatrix Medical Group, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 1,532,300 shares of Pediatrix Medical Group, Inc. (DE:PDC) valued at $27,581,400 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,357,700 shares of Pediatrix Medical Group, Inc.. This represents a change in shares of 12.86% during the quarter. The current value of the position is $28,654,010 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,532,300 174,600 12.86 32,776 12.86 0.0513
2026-02-12 2025-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,357,700 51,700 3.96 29,041 32.76 0.0451
2025-11-13 2025-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,306,000 102,100 8.48 21,876 26.63 0.0289
2025-08-13 2025-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,203,900 -17,100 -1.40 17,276 -2.36 0.0230
2025-05-14 2025-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,221,000 382,200 45.57 17,692 60.76 0.0268
2025-02-13 2024-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 838,800 453,000 117.42 11,005 146.14 0.0163
2024-11-13 2024-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 385,800 -28,200 -6.81 4,471 43.07 0.0067
2024-08-09 2024-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 414,000 -20,300 -4.67 3,126 78,025.00 0.0053
2024-05-13 2024-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 434,300 77,000 21.55 4 33.33 0.0068
2024-02-13 2023-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 357,300 309,100 641.29 3 0.0051
2023-11-14 2023-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 48,200 -5,100 -9.57 1 0.0010
2023-08-11 2023-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 53,300 -55,900 -51.19 1 -100.00 0.0011
2023-05-12 2023-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 109,200 109,200 2 0.0022
2022-11-14 2022-09-30 13F MEDNAX COM 58502B106 0 -140,200 -100.00 0 -100.00
2022-08-12 2022-06-30 13F MEDNAX COM 58502B106 140,200 -185,600 -56.97 2,946 -61.49 0.0035
2022-05-13 2022-03-31 13F MEDNAX COM 58502B106 325,800 205,600 171.05 7,650 133.87 0.0090
2022-02-11 2021-12-31 13F MEDNAX COM 58502B106 120,200 -98,500 -45.04 3,271 -47.39 0.0041
2021-11-12 2021-09-30 13F MEDNAX COM 58502B106 218,700 -92,600 -29.75 6,218 -33.75 0.0080
2021-08-13 2021-06-30 13F MEDNAX COM 58502B106 311,300 311,300 9,386 0.0117
2021-05-13 2021-03-31 13F MEDNAX COM 58502B106 0 -206,400 -100.00 0 -100.00
2021-02-10 2020-12-31 13F MEDNAX COM 58502B106 206,400 -209,100 -50.32 5,065 -25.12 0.0055
2020-11-13 2020-09-30 13F MEDNAX COM 58502B106 415,500 61,600 17.41 6,764 11.76 0.0068
2020-08-13 2020-06-30 13F MEDNAX COM 58502B106 353,900 -129,511 -26.79 6,052 7.55 0.0052
2020-05-14 2020-03-31 13F MEDNAX COM 58502B106 483,411 -413,259 -46.09 5,627 -77.42 0.0055
2020-02-13 2019-12-31 13F MEDNAX COM 58502B106 896,670 171,370 23.63 24,918 51.88 0.0191
2019-11-13 2019-09-30 13F MEDNAX COM 58502B106 725,300 -31,100 -4.11 16,406 -14.03 0.0139
2019-08-12 2019-06-30 13F MEDNAX COM 58502B106 756,400 49,700 7.03 19,084 -0.61 0.0168
2019-05-14 2019-03-31 13F MEDNAX COM 58502B106 706,700 214,500 43.58 19,201 18.21 0.0175
2019-02-12 2018-12-31 13F MEDNAX COM 58502B106 492,200 -85,000 -14.73 16,243 -39.69 0.0178
2018-11-13 2018-09-30 13F MEDNAX COM 58502B106 577,200 408,577 242.30 26,932 269.03 0.0277
2018-08-13 2018-06-30 13F/A-1 MEDNAX COM 58502B106 168,623 168,623 7,298 0.0080
2016-11-14 2016-09-30 13F MEDNAX COM 58502B106 0 -252,200 -100.00 0 -100.00
2016-08-12 2016-06-30 13F MEDNAX COM 58502B106 252,200 -189,400 -42.89 18,267 -35.99 0.0348
2016-05-13 2016-03-31 13F MEDNAX COM 58502B106 441,600 441,600 75.10 28,536 56.22 0.0542
2016-02-11 2015-12-31 13F MEDNAX COM 58502B106 0 0 0 0.0000
2015-11-12 2015-09-30 13F MEDNAX COM 58502B106 0 -371,000 -100.00 0 -100.00
2015-08-14 2015-06-30 13F MEDNAX COM 58502B106 371,000 -89,300 -19.40 27,495 -17.62 0.0626
2015-05-13 2015-03-31 13F MEDNAX COM 58502B106 460,300 107,000 30.29 33,376 42.90 0.0711
2015-02-13 2014-12-31 13F MEDNAX COM 58502B106 353,300 -46,500 -11.63 23,357 6.57 0.0564
2014-11-12 2014-09-30 13F MEDNAX COM 58502B106 399,800 370,100 1,246.13 21,917 1,169.08 0.0600
2014-08-13 2014-06-30 13F MEDNAX COM 58502B106 29,700 24,700 494.00 1,727 457.10 0.0040
2014-05-14 2014-03-31 13F MEDNAX COM 58502B106 5,000 5,000 310 0.0007
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.