Pediatrix Medical Group, Inc.
US ˙ NYSE ˙ US58502B1061

SecurityMD / Pediatrix Medical Group, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Boston Partners closes position in MD / Pediatrix Medical Group, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 0 shares of Pediatrix Medical Group, Inc. (US:MD) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 797,702 shares of Pediatrix Medical Group, Inc.. The current value of the position is $0 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)
2026-05-11 2026-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 0 -100.00 0
2026-02-13 2025-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 797,702 -630,251 -44.14 17,197 -28.53 0.0178
2025-11-13 2025-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,427,953 8,335 0.59 24,063 20.70 0.0247
2025-08-12 2025-06-30 13F/A-1 PEDIATRIX MEDICAL GROUP COM 58502B106 1,419,618 -562,271 -28.37 19,936 -28.78 0.0221
2025-08-07 2025-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,419,618 -562,271 19,936 0.0092
2025-05-13 2025-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,981,889 25,536 1.31 27,990 7.98 0.0339
2025-02-11 2024-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,956,353 393,600 25.19 25,922 40.68 0.0315
2024-11-12 2024-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,562,753 -128,947 -7.62 18,426 44.62 0.0217
2024-08-14 2024-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,691,700 -94,734 -5.30 12,741 -28.03 0.0158
2024-05-28 2024-03-31 13F/A-1 PEDIATRIX MEDICAL GROUP COM 58502B106 1,786,434 453,254 34.00 17,702 42.17 0.0211
2024-05-13 2024-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,786,434 453,254 17,702 0.0088
2024-02-07 2023-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 1,333,180 1,333,180 12,452 0.0165
2022-11-09 2022-09-30 13F MEDNAX COM 58502B106 0 -10,514 -100.00 0 -100.00
2022-08-10 2022-06-30 13F MEDNAX COM 58502B106 10,514 -11,680 -52.63 221 -57.58 0.0003
2022-05-10 2022-03-31 13F MEDNAX COM 58502B106 22,194 9,311 72.27 521 48.43 0.0006
2022-02-04 2021-12-31 13F MEDNAX COM 58502B106 12,883 12,883 351 0.0004
2017-08-02 2017-06-30 13F MEDNAX COM 58502B106 0 -42,384 -100.00 0 -100.00
2017-05-03 2017-03-31 13F MEDNAX COM 58502B106 42,384 0 0.00 2,941 4.11 0.0038
2017-02-06 2016-12-31 13F MEDNAX COM 58502B106 42,384 0 0.00 2,825 0.61 0.0037
2016-11-09 2016-09-30 13F MEDNAX COM 58502B106 42,384 42,384 0.00 2,808 0.0039
2016-05-12 2016-03-31 13F MEDNAX COM 58502B106 0 0 0 0.0000
2016-02-08 2015-12-31 13F MEDNAX COM 58502B106 0 -825,549 -100.00 0 -100.00
2015-11-10 2015-09-30 13F MEDNAX COM 58502B106 825,549 100,074 13.79 63,394 17.91 0.0966
2015-08-10 2015-06-30 13F MEDNAX COM 58502B106 725,475 725,475 53,765 0.0772
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.