Pediatrix Medical Group, Inc.
US ˙ NYSE ˙ US58502B1061

SecurityMD / Pediatrix Medical Group, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership194,971 shares
Latest Disclosed Value $ 4,170,450
Sei Investments Co reports 6.61% increase in ownership of MD / Pediatrix Medical Group, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 194,971 shares of Pediatrix Medical Group, Inc. (US:MD) valued at $4,170,430 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 182,874 shares of Pediatrix Medical Group, Inc.. This represents a change in shares of 6.61% during the quarter. The current value of the position is $4,258,167 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)
2026-02-13 2025-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 194,971 12,097 6.61 4,170 36.14 0.0041
2025-11-13 2025-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 182,874 8,909 5.12 3,063 22.72 0.0033
2025-08-14 2025-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 173,965 33,393 23.76 2,496 22.59 0.0029
2025-05-14 2025-03-31 13F/A-1 PEDIATRIX MEDICAL GROUP COM 58502B106 140,572 6,994 5.24 2,037 16.21 0.0026
2025-05-13 2025-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 134,067 489 1,761 0.0019
2025-02-11 2024-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 133,578 -16,202 -10.82 1,753 0.98 0.0023
2024-11-12 2024-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 149,780 -18,412 -10.95 1,736 36.72 0.0023
2024-08-13 2024-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 168,192 -15,719 -8.55 1,270 -31.18 0.0018
2024-05-07 2024-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 183,911 -13,520 -6.85 1,845 0.44 0.0027
2024-02-14 2023-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 197,431 1,494 0.76 1,836 -26.27 0.0029
2023-11-14 2023-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 195,937 -2,835 -1.43 2,490 -11.83 0.0045
2023-08-11 2023-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 198,772 -239 -0.12 2,825 -4.82 0.0049
2023-05-12 2023-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 199,011 48,100 31.87 2,967 32.34 0.0055
2023-02-10 2022-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 150,911 6,203 4.29 2,243 -6.15 0.0050
2022-11-14 2022-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 144,708 -36 -0.02 2,389 -21.36 0.0053
2022-08-15 2022-06-30 13F MEDNAX COM 58502B106 144,744 8,173 5.98 3,038 -5.24 0.0066
2022-05-13 2022-03-31 13F MEDNAX COM 58502B106 136,571 3,764 2.83 3,206 -11.29 0.0064
2022-02-14 2021-12-31 13F MEDNAX COM 58502B106 132,807 -14,262 -9.70 3,614 -13.23 0.0068
2021-11-12 2021-09-30 13F MEDNAX COM 58502B106 147,069 -19,204 -11.55 4,165 -16.72 0.0087
2021-08-06 2021-06-30 13F MEDNAX COM 58502B106 166,273 -1,342 -0.80 5,001 17.15 0.0111
2021-05-12 2021-03-31 13F MEDNAX COM 58502B106 167,615 -110,689 -39.77 4,269 -37.52 0.0108
2021-02-08 2020-12-31 13F MEDNAX COM 58502B106 278,304 -6,557 -2.30 6,833 47.42 0.0177
2020-12-04 2020-09-30 13F/A-1 MEDNAX COM 58502B106 284,861 9,590 3.48 4,635 -1.42 0.0134
2020-11-06 2020-09-30 13F MEDNAX COM 58502B106 287,439 12,168 4,677 11,261.1761
2020-08-17 2020-06-30 13F/A-1 MEDNAX COM 58502B106 275,271 -18,961 -6.44 4,702 38.05 0.0146
2020-08-11 2020-06-30 13F MEDNAX COM 58502B106 214,066 -80,166 5,882 15,955.2381
2020-05-14 2020-03-31 13F MEDNAX COM 58502B106 294,232 29,418 11.11 3,406 -53.70 0.0125
2020-02-06 2019-12-31 13F MEDNAX COM 58502B106 264,814 64,238 32.03 7,356 62.64 0.0219
2019-11-12 2019-09-30 13F MEDNAX COM 58502B106 200,576 18,617 10.23 4,523 -1.29 0.0116
2019-08-14 2019-06-30 13F MEDNAX COM 58502B106 181,959 30,458 20.10 4,582 11.67 0.0150
2019-05-15 2019-03-31 13F MEDNAX COM 58502B106 151,501 30,012 24.70 4,103 -27.60 0.0138
2019-02-13 2018-12-31 13F MEDNAX COM 58502B106 121,489 97 0.08 5,667 -0.04 0.0202
2018-11-08 2018-09-30 13F MEDNAX COM 58502B106 121,392 -24,205 -16.62 5,669 -10.03 0.0205
2018-08-03 2018-06-30 13F MEDNAX COM 58502B106 145,597 -12,939 -8.16 6,301 -28.55 0.0214
2018-05-11 2018-03-31 13F MEDNAX COM 58502B106 158,536 17,303 12.25 8,819 16.84 0.0338
2018-02-08 2017-12-31 13F MEDNAX COM 58502B106 141,233 33,362 30.93 7,548 62.25 0.0262
2017-11-06 2017-09-30 13F MEDNAX COM 58502B106 107,871 4,763 4.62 4,652 -25.26 0.0165
2017-07-31 2017-06-30 13F MEDNAX COM 58502B106 103,108 3,139 3.14 6,224 -10.27 0.0248
2017-05-05 2017-03-31 13F MEDNAX COM 58502B106 99,969 -20,503 -17.02 6,936 -13.63 0.0304
2017-02-02 2016-12-31 13F MEDNAX COM 58502B106 120,472 -8,139 -6.33 8,031 -5.75 0.0389
2016-11-04 2016-09-30 13F MEDNAX COM 58502B106 128,611 -2,750 -2.09 8,521 -10.45 0.0433
2016-08-11 2016-06-30 13F MEDNAX COM 58502B106 131,361 -36,569 -21.78 9,515 -12.32 0.0571
2016-05-10 2016-03-31 13F/A-1 MEDNAX COM 58502B106 167,930 6,606 4.09 10,852 -6.12 0.0675
2016-02-03 2015-12-31 13F MEDNAX COM 58502B106 161,324 9,329 6.14 11,560 -0.96 0.0705
2015-11-02 2015-09-30 13F/A-1 MEDNAX COM 58502B106 151,995 24,918 19.61 11,672 23.95 0.1071
2015-10-30 2015-09-30 13F DIREXION SHS ETF TR COM 58502B106 151,995 11,673
2015-08-07 2015-06-30 13F/A-1 MEDNAX COM 58502B106 127,077 -763 -0.60 9,417 1.57 0.0851
2015-08-04 2015-06-30 13F MEDNAX COM 58502B106 127,077 -763 9,417 0.0851
2015-05-14 2015-03-31 13F/A-1 MEDNAX COM 58502B106 127,840 -9,120 -6.66 9,271 2.37 0.0805
2015-05-01 2015-03-31 13F MEDNAX COM 58502B106 127,840 9,271
2015-02-10 2014-12-31 13F MEDNAX COM 58502B106 136,960 136,960 9,056 0.0800
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.