# DIANTHUS THERAPEUTICS INC COM

DIANTHUS THERAPEUTICS INC COM is a security (CUSIP 252828108) tracked across SEC portfolio filings. 261 institutional managers reported $5.0B on Form 13F as of 2026-06-30; 38 registered fund positions totaling $585.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: DIANTHUS THERAPEUTICS INC
- Class: COM
- CUSIP: 252828108
- Asset category: EC
- 13F holders: 261
- 13F value: $5.0B
- 13F period: 2026-06-30
- N-PORT fund positions: 38
- N-PORT value: $585.4M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 261 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| FMR LLC | BOSTON, MA | $651.9M | 7,767,686 |
| BlackRock, Inc. | New York, NY | $266.5M | 3,175,703 |
| RA CAPITAL MANAGEMENT, L.P. | Boston, MA | $219.2M | 2,611,733 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $217.8M | 2,595,783 |
| [Fairmount Funds Management LLC](https://search.stillhousedata.com/firm/284844) | WEST CONSHOHOCKEN, PA | $212.9M | 2,537,191 |
| [Avidity Partners Management LP](https://search.stillhousedata.com/firm/304628) | DALLAS, TX | $176.6M | 2,104,184 |
| [Octagon Capital Advisors LP](https://search.stillhousedata.com/firm/306424) | NEW YORK, NY | $163.4M | 1,946,667 |
| TCG Crossover Management, LLC | PALO ALTO, CA | $140.7M | 1,676,624 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $138.4M | 1,610,483 |
| STATE STREET CORP | BOSTON, MA | $117.4M | 1,398,913 |
| [JENNISON ASSOCIATES LLC](https://search.stillhousedata.com/firm/107959) | NEW YORK, NY | $99.6M | 1,021,763 |
| [VR Adviser, LLC](https://search.stillhousedata.com/firm/169288) | NEW YORK, NY | $99.0M | 1,180,000 |
| [FRED ALGER MANAGEMENT, LLC](https://search.stillhousedata.com/firm/106750) | NEW YORK, NY | $97.5M | 1,161,923 |
| [Polar Capital Holdings Plc](https://search.stillhousedata.com/firm/136133) | London, X0 | $90.3M | 1,076,009 |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | New York, NY | $85.6M | 1,019,813 |

## Top fund holders (N-PORT)

_Showing 15 of 38 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $148.3M | 15.01% |
| [VANGUARD HEALTH CARE FUND](https://search.stillhousedata.com/fund/S000002922) | VANGUARD SPECIALIZED FUNDS | $109.3M | 29.64% |
| [T. Rowe Price Small-Cap Stock Fund, Inc.](https://search.stillhousedata.com/fund/S000002120) | T. ROWE PRICE SMALL-CAP STOCK FUND, INC. | $41.9M | 51.92% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $40.5M | 37.19% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $34.5M | 4.23% |
| [ALGER FOCUS EQUITY FUND](https://search.stillhousedata.com/fund/S000009201) | ALGER INSTITUTIONAL FUNDS | $32.7M | 53.57% |
| [T. Rowe Price Institutional Small-Cap Stock Fund](https://search.stillhousedata.com/fund/S000002094) | T. Rowe Price Equity Funds, Inc. | $22.9M | 52.95% |
| [ALGER SPECTRA FUND](https://search.stillhousedata.com/fund/S000009190) | ALGER FUNDS II | $21.4M | 49.77% |
| [PGIM Jennison Health Sciences Fund](https://search.stillhousedata.com/fund/S000004380) | Prudential Sector Funds, Inc. | $17.7M | 127.73% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $17.1M | 9.77% |
| [T. Rowe Price New Horizons Fund, Inc.](https://search.stillhousedata.com/fund/S000002106) | T. ROWE PRICE NEW HORIZONS FUND, INC. | $15.9M | 12.42% |
| [AB DISCOVERY GROWTH FUND, INC.](https://search.stillhousedata.com/fund/S000010117) | AB DISCOVERY GROWTH FUND, INC. | $15.6M | 57.75% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $10.2M | 45.73% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $8.0M | 8.62% |
| [Fidelity Advisor Health Care Fund](https://search.stillhousedata.com/fund/S000005329) | Fidelity Advisor Series VII | $7.5M | 25.85% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/252828108.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.