Pediatrix Medical Group, Inc.
US ˙ NYSE ˙ US58502B1061

SecurityMD / Pediatrix Medical Group, Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership59,939 shares
Latest Disclosed Value $ 1,282,095
XTX Topco Ltd reports 39.98% decrease in ownership of MD / Pediatrix Medical Group, Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 59,939 shares of Pediatrix Medical Group, Inc. (US:MD) valued at $1,282,095 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 99,867 shares of Pediatrix Medical Group, Inc.. This represents a change in shares of -39.98% during the quarter. The current value of the position is $1,309,068 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)
2026-05-15 2026-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 59,939 -39,928 -39.98 1,282 -39.98 0.0223
2026-02-17 2025-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 99,867 82,750 483.44 2,136 646.85 0.0561
2025-11-14 2025-09-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 17,117 308 1.83 287 18.67 0.0149
2025-08-12 2025-06-30 13F PEDIATRIX MEDICAL GROUP COM 58502B106 16,809 -27,943 -62.44 241 -62.81 0.0100
2025-05-08 2025-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 44,752 31,835 246.46 648 283.43 0.0332
2025-02-13 2024-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 12,917 12,917 169 0.0139
2024-05-13 2024-03-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 0 -20,918 -100.00 0 -100.00
2024-02-13 2023-12-31 13F PEDIATRIX MEDICAL GROUP COM 58502B106 20,918 20,918 195 0.0426
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.