Company · Ownership research

GeneDx Holdings Corp. WGS

CIK 0001818331 · CUSIP 81663L200

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 81663L200 (WGS), not CUSIP 81663L900 (WGS), CUSIP 81663L950 (WGS), and does not merge CUSIPs.

This page lists the top 20 of 268 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

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	Corvex Management LP CIK 1535472 · View history	$329.54M 3,058,629 shares	11.80%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
02	Casdin Capital, LLC CIK 1534261 · View history	$323.99M 3,007,164 shares	27.01%	-500.00K(-14.30%)Reduced	SEC filing ↗ Nov 14, 2025	▾
03	BlackRock, Inc. CIK 2012383 · View history	$164.74M 1,529,075 shares	0.00%	+94.44K(+6.60%)Added	SEC filing ↗ Nov 12, 2025	▾
04	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$131.46M 1,220,138 shares	0.34%	-411.26K(-25.20%)Reduced	SEC filing ↗ Nov 12, 2025	▾
05	VANGUARD GROUP INC CIK 102909 · View history	$126.10M 1,170,422 shares	0.00%	-10.50K(-0.90%)Reduced	SEC filing ↗ Nov 7, 2025	▾
06	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$125.86M 1,168,180 shares	0.02%	+118.74K(+11.30%)Added	SEC filing ↗ Nov 14, 2025	▾
07	ORACLE INVESTMENT MANAGEMENT INC CIK 1012622 · View history	$95.88M 889,954 shares	66.91%	-32.50K(-3.50%)Reduced	SEC filing ↗ Nov 19, 2025	▾
08	SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC CIK 1638555 · View history	$88.73M 823,567 shares	2.89%	+56.30K(+7.30%)Added	SEC filing ↗ Nov 14, 2025	▾
09	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$77.36M 718,003 shares	0.05%	-319.11K(-30.80%)Reduced	SEC filing ↗ Nov 14, 2025	▾
10	FRANKLIN RESOURCES INC CIK 38777 · View history	$73.41M 681,381 shares	0.02%	+343.95K(+101.90%)Added	SEC filing ↗ Nov 13, 2025	▾
11	Zweig-DiMenna Associates LLC CIK 1533950 · View history	$64.89M 602,300 shares	5.04%	+16.20K(+2.80%)Added	SEC filing ↗ Nov 7, 2025	▾
12	JENNISON ASSOCIATES LLC CIK 53417 · View history	$64.47M 598,426 shares	0.04%	+200.53K(+50.40%)Added	SEC filing ↗ Oct 30, 2025	▾
13	WESTFIELD CAPITAL MANAGEMENT CO LP CIK 1177719 · View history	$58.62M 544,094 shares	0.25%	-45.09K(-7.70%)Reduced	SEC filing ↗ Nov 12, 2025	▾
14	LORD, ABBETT & CO. LLC CIK 728100 · View history	$56.60M 525,377 shares	0.17%	+90.91K(+20.90%)Added	SEC filing ↗ Nov 13, 2025	▾
15	FMR LLC CIK 315066 · View history	$54.23M 503,309 shares	0.00%	+339.99K(+208.20%)Added	SEC filing ↗ Nov 13, 2025	▾
16	Invesco Ltd. CIK 914208 · View history	$53.23M 494,072 shares	0.01%	-60.35K(-10.90%)Reduced	SEC filing ↗ Nov 13, 2025	▾
17	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$52.74M 489,397 shares	0.00%	+4.68K(+1.00%)Added	SEC filing ↗ Nov 12, 2025	▾
18	RAYMOND JAMES FINANCIAL INC CIK 720005 · View history	$51.24M 475,543 shares	0.02%	+62.32K(+15.10%)Added	SEC filing ↗ Nov 14, 2025	▾
19	MORGAN STANLEY CIK 895421 · Amended · View history	$50.40M 467,812 shares	0.00%	-19.26K(-4.00%)Reduced	SEC filing ↗ May 27, 2026	▾
20	ARK Investment Management LLC CIK 1697748 · View history	$48.16M 446,979 shares	0.29%	+446.98KNew	SEC filing ↗ Nov 12, 2025	▾

Showing 20 / 268 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

268

Cancelled or null records excluded

Disclosed shares

30,103,214

Not deduplicated across managers

Disclosed value

$3.24B

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.

GeneDx Holdings Corp. · Q3 2025

Explore all 268 reporting institutions.

This page includes 20 of 268 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 268 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":"81663L200","quarter":"2025Q3","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.