Company · Ownership research

Pediatrix Medical Group, Inc. MD

CIK 0000893949 · CUSIP 58502B106

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 58502B106 (MD), not CUSIP 58502B906 (MD), and does not merge CUSIPs.

This page lists the top 20 of 297 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$290.36M 13,574,373 shares	0.01%	+12.10K(+0.10%)Added	SEC filing ↗ May 13, 2026	▾
02	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$131.64M 6,154,126 shares	0.01%	—	SEC filing ↗ May 8, 2026	▾
03	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$83.96M 3,925,366 shares	0.04%	+227.23K(+6.10%)Added	SEC filing ↗ May 15, 2026	▾
04	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$82.50M 3,856,915 shares	0.02%	+287.70K(+8.10%)Added	SEC filing ↗ May 7, 2026	▾
05	VICTORY CAPITAL MANAGEMENT INC CIK 1040188 · View history	$82.18M 3,841,933 shares	0.05%	+23.65K(+0.60%)Added	SEC filing ↗ May 15, 2026	▾
06	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$78.21M 3,656,321 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
07	STATE STREET CORP CIK 93751 · View history	$72.27M 3,378,500 shares	0.00%	+66.35K(+2.00%)Added	SEC filing ↗ May 15, 2026	▾
08	FMR LLC CIK 315066 · View history	$48.50M 2,267,434 shares	0.00%	-161.35K(-6.60%)Reduced	SEC filing ↗ May 15, 2026	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$46.81M 2,187,967 shares	0.00%	+6.25K(+0.30%)Added	SEC filing ↗ May 15, 2026	▾
10	WASATCH ADVISORS LP CIK 814133 · View history	$43.86M 2,050,524 shares	0.29%	+2.05MNew	SEC filing ↗ Apr 21, 2026	▾
11	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$36.54M 1,708,433 shares	0.03%	-143.79K(-7.80%)Reduced	SEC filing ↗ May 15, 2026	▾
12	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$32.78M 1,532,300 shares	0.05%	+174.60K(+12.90%)Added	SEC filing ↗ May 14, 2026	▾
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$30.87M 1,443,391 shares	0.00%	-109.19K(-7.00%)Reduced	SEC filing ↗ May 15, 2026	▾
14	MORGAN STANLEY CIK 895421 · View history	$26.75M 1,250,625 shares	0.00%	-53.45K(-4.10%)Reduced	SEC filing ↗ May 15, 2026	▾
15	FULLER & THALER ASSET MANAGEMENT, INC. CIK 1082327 · View history	$26.30M 1,229,431 shares	0.09%	-74(0.00%)Reduced	SEC filing ↗ May 14, 2026	▾
16	SILVERCREST ASSET MANAGEMENT GROUP LLC CIK 1232395 · View history	$20.76M 970,610 shares	0.15%	-61.74K(-6.00%)Reduced	SEC filing ↗ May 15, 2026	▾
17	Nuveen, LLC CIK 1871926 · View history	$20.39M 953,099 shares	0.01%	-247.11K(-20.60%)Reduced	SEC filing ↗ Apr 30, 2026	▾
18	Allspring Global Investments Holdings, LLC CIK 1890906 · View history	$20.19M 975,133 shares	0.03%	+335.73K(+52.50%)Added	SEC filing ↗ May 5, 2026	▾
19	Invesco Ltd. CIK 914208 · Amended · View history	$19.73M 922,177 shares	0.00%	-168.48K(-15.40%)Reduced	SEC filing ↗ May 12, 2026	▾
20	NORTHERN TRUST CORP CIK 73124 · View history	$19.26M 900,270 shares	0.00%	+27.92K(+3.20%)Added	SEC filing ↗ May 14, 2026	▾

Showing 20 / 297 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

297

Cancelled or null records excluded

Disclosed shares

83,072,770

Not deduplicated across managers

Disclosed value

$1.78B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Pediatrix Medical Group, Inc. · Q1 2026

Explore all 297 reporting institutions.

This page includes 20 of 297 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 297 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"58502B106","quarter":"2026Q1","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.