Company · Ownership research

Dianthus Therapeutics, Inc. /DE/ DNTH

CIK 0001690585 · CUSIP 252828108

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 252828108 (DNTH), not CUSIP 252828908 (DNTH), CUSIP 252828958 (DNTH), and does not merge CUSIPs.

This page lists the top 20 of 241 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	FMR LLC CIK 315066 · View history	$651.86M 7,767,686 shares	0.03%	+1.34M(+20.80%)Added	SEC filing ↗ May 15, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$266.50M 3,175,703 shares	0.00%	+1.26M(+65.80%)Added	SEC filing ↗ May 13, 2026	▾
03	RA CAPITAL MANAGEMENT, L.P. CIK 1346824 · View history	$219.18M 2,611,733 shares	2.32%	+1.00M(+62.00%)Added	SEC filing ↗ May 15, 2026	▾
04	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$217.84M 2,595,783 shares	0.04%	+92.59K(+3.70%)Added	SEC filing ↗ May 15, 2026	▾
05	Fairmount Funds Management LLC CIK 1802528 · View history	$212.92M 2,537,191 shares	15.38%	+400.00K(+18.70%)Added	SEC filing ↗ May 15, 2026	▾
06	Avidity Partners Management LP CIK 1791827 · Amended · View history	$176.58M 2,104,184 shares	35.76%	0(0.00%)Unchanged	SEC filing ↗ May 28, 2026	▾
07	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$170.46M 2,031,249 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
08	Octagon Capital Advisors LP CIK 1839435 · View history	$163.36M 1,946,667 shares	18.08%	-470.00K(-19.40%)Reduced	SEC filing ↗ May 15, 2026	▾
09	TCG Crossover Management, LLC CIK 1839948 · View history	$140.70M 1,676,624 shares	4.03%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2026	▾
10	CITADEL ADVISORS LLC CIK 1423053 · View history	$135.15M 1,610,483 shares	0.10%	+541.55K(+50.70%)Added	SEC filing ↗ May 15, 2026	▾
11	STATE STREET CORP CIK 93751 · View history	$117.40M 1,398,913 shares	0.00%	-108.71K(-7.20%)Reduced	SEC filing ↗ May 15, 2026	▾
12	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$108.44M 1,292,182 shares	0.07%	+1.29MNew	SEC filing ↗ May 15, 2026	▾
13	VR Adviser, LLC CIK 1615982 · View history	$99.03M 1,180,000 shares	3.70%	+180.00K(+18.00%)Added	SEC filing ↗ May 15, 2026	▾
14	FRED ALGER MANAGEMENT, LLC CIK 3520 · View history	$97.51M 1,161,923 shares	0.43%	+1.13M(+3,372.60%)Added	SEC filing ↗ May 15, 2026	▾
15	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$96.25M 1,146,948 shares	0.01%	+530.91K(+86.20%)Added	SEC filing ↗ May 15, 2026	▾
16	Polar Capital Holdings Plc CIK 1837309 · View history	$90.30M 1,076,009 shares	0.39%	+71.28K(+7.10%)Added	SEC filing ↗ May 15, 2026	▾
17	DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) CIK 1009258 · View history	$85.58M 1,019,813 shares	1.01%	+1.02MNew	SEC filing ↗ May 15, 2026	▾
18	FRANKLIN RESOURCES INC CIK 38777 · View history	$81.25M 968,182 shares	0.02%	+505.36K(+109.20%)Added	SEC filing ↗ May 13, 2026	▾
19	Cormorant Asset Management, LP CIK 1583977 · View history	$79.72M 950,000 shares	4.02%	+950.00KNew	SEC filing ↗ May 15, 2026	▾
20	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$76.90M 916,211 shares	0.00%	+239.55K(+35.40%)Added	SEC filing ↗ May 15, 2026	▾

Showing 20 / 241 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

241

Cancelled or null records excluded

Disclosed shares

62,197,446

Not deduplicated across managers

Disclosed value

$5.18B

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.

Dianthus Therapeutics, Inc. /DE/ · Q1 2026

Explore all 241 reporting institutions.

This page includes 20 of 241 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 241 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":"252828108","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.