Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON)
CUSIP: 254604101
Q1 2026 13F Holders as of 31 Mar 2026
- Type / Class
- Equity / Common Stock, $0.0001 par value per share
- Shares outstanding
- 37,778,373
- Total 13F shares
- 5,053,214
- Share change
- +390,076
- Total reported value
- $323,094,439
- Price per share
- $63.94
- Number of holders
- 72
- Value change
- +$21,576,542
- Number of buys
- 33
- Number of sells
- 27
Quarterly Holders Quick Answers
What is CUSIP 254604101?
CUSIP 254604101 identifies IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
Next holder-history checks
These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.
- Back to full security ownership history for the broader multi-quarter picture.
- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Previous quarter: Q4 2025
Recent filing periods for CUSIP 254604101:
Top shareholders of IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
|
Company |
14%
from 13D/G
|
5,450,222
|
$432,802,132 | — | 31 Dec 2025 | |
| Braden Michael Leonard |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
5,247,500
|
$354,993,375 | — | 26 Oct 2022 | |
| AI DMI LLC |
3/4/5
13D/G
|
10%+ Owner |
8%
from 13D/G
|
2,814,379
|
$226,473,078 | -$59,873,462 | 22 Oct 2025 | |
| BlackRock, Inc. |
13F
|
Company |
6%
|
2,274,980
|
$180,656,161 | — | 31 Dec 2025 | |
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
13F
|
Company |
5.9%
|
2,228,924
|
$177,001,530 | $0 | 30 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
4.7%
|
1,767,680
|
$140,371,470 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
4.5%
|
1,698,005
|
$134,839,000 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
4.2%
|
1,581,127
|
$125,557,326 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
|
Company |
4.1%
from 13D/G
|
1,518,274
|
$120,566,138 | — | 31 Dec 2025 | |
| Atlas Venture Life Science Advisors, LLC |
13F
|
Company |
4%
|
1,513,875
|
$120,216,814 | — | 31 Dec 2025 | |
| Atlas Venture Fund X, L.P. |
3/4/5
13D/G
|
10%+ Owner |
2.2%
from 13D/G
|
1,600,512
|
$108,274,637 | — | 23 Jan 2024 | |
| Frazier Life Sciences Management, L.P. |
13F
|
Company |
3.3%
|
1,260,000
|
$100,056,600 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
3.1%
|
1,187,991
|
$94,338,365 | — | 31 Dec 2025 | |
| ORBIMED ADVISORS LLC |
13F
13D/G
3/4/5
|
Company · Director |
4.5%
from 13D/G
|
1,067,550
|
$84,774,146 | — | 31 Dec 2025 | |
| Siren, L.L.C. |
13F
|
Individual |
2.6%
|
988,401
|
$78,488,923 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
|
Company |
2.5%
|
957,833
|
$76,061,519 | — | 31 Dec 2025 | |
| Novo Holdings A/S |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
1,090,772
|
$73,790,726 | — | 28 Jun 2023 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2%
|
754,195
|
$59,890,625 | — | 31 Dec 2025 | |
| Vestal Point Capital, LP |
13F
|
Company |
1.9%
|
735,000
|
$58,366,350 | — | 31 Dec 2025 | |
| Frazier Life Sciences Public Fund, L.P. |
13D/G
|
— |
3%
|
1,026,489
|
$57,339,676 | $0 | 30 Jun 2025 | |
| Paradigm Biocapital Advisors LP |
13D/G
|
— |
3.5%
|
1,210,971
|
$57,097,283 | $0 | 31 Mar 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.8%
|
684,958
|
$54,402,165 | — | 31 Dec 2025 | |
| BVF INC/IL |
13F
|
Company |
1.7%
|
650,000
|
$51,616,500 | — | 31 Dec 2025 | |
| Bain Capital Life Sciences Opportunities III, LP |
13D/G
|
— |
3.3%
|
983,500
|
$46,372,025 | $0 | 31 Dec 2024 | |
| JENNISON ASSOCIATES LLC |
13F
|
Company |
1.4%
|
532,079
|
$42,252,392 | — | 31 Dec 2025 | |
| First Light Asset Management, LLC |
13F
|
Company |
1.4%
|
523,167
|
$41,544,691 | — | 31 Dec 2025 | |
| DEERFIELD MANAGEMENT COMPANY, L.P. |
13F
|
Company |
1.4%
|
511,163
|
$40,591,454 | — | 31 Dec 2025 | |
| Logos Global Management LP |
13F
|
Company |
1.3%
|
510,000
|
$40,499,100 | — | 31 Dec 2025 | |
| ARMISTICE CAPITAL, LLC |
13F
|
Company |
1.3%
|
499,391
|
$39,656,639 | — | 31 Dec 2025 | |
| Checkpoint Capital L.P. |
13F
|
Company |
1.2%
|
452,992
|
$35,972,095 | — | 31 Dec 2025 | |
| PERCEPTIVE ADVISORS LLC |
13F
|
Company |
1.2%
|
450,743
|
$35,793,502 | — | 31 Dec 2025 | |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
|
Company |
1%
|
395,392
|
$31,397,693 | — | 31 Dec 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
1%
|
394,374
|
$31,317,239 | — | 31 Dec 2025 | |
| Assenagon Asset Management S.A. |
13F
|
Company |
0.95%
|
357,836
|
$28,415,757 | — | 31 Dec 2025 | |
| James B. Tananbaum |
3/4/5
|
Director, 10%+ Owner |
—
mixed-class rows
|
428,745
mixed-class rows
|
$27,837,975 | — | 04 Oct 2021 | |
| BAKER BROS. ADVISORS LP |
13F
|
Company |
0.89%
|
337,050
|
$26,765,141 | — | 31 Dec 2025 | |
| Palo Alto Investors LP |
13F
|
Company |
0.84%
|
317,456
|
$25,209,181 | — | 31 Dec 2025 | |
| Foresite Capital Management V, LLC |
13F
|
Company |
0.79%
|
299,069
|
$23,749,069 | — | 31 Dec 2025 | |
| Saturn V Capital Management LP |
13F
|
Company |
0.79%
|
298,429
|
$23,698,247 | — | 31 Dec 2025 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
0.75%
|
282,409
|
$22,426,098 | — | 31 Dec 2025 | |
| GREAT POINT PARTNERS LLC |
13F
|
Company |
0.66%
|
250,000
|
$19,852,500 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.65%
|
247,039
|
$19,617,367 | — | 31 Dec 2025 | |
| Aberdeen Group plc |
13F
|
Company |
0.62%
|
234,358
|
$18,610,369 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.6%
|
228,070
|
$18,111,039 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.59%
|
223,575
|
$17,747,193 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
0.59%
|
221,761
|
$17,610,041 | — | 31 Dec 2025 | |
| Opaleye Management Inc. |
13F
|
Company |
0.53%
|
200,000
|
$15,882,000 | — | 31 Dec 2025 | |
| TimesSquare Capital Management, LLC |
13F
|
Company |
0.5%
|
187,777
|
$14,911,372 | — | 31 Dec 2025 | |
| Atlas Venture Opportunity Fund II, L.P. |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
218,326
|
$14,769,754 | — | 29 Dec 2022 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.49%
|
184,779
|
$14,673,300 | — | 31 Dec 2025 |
Institutional Holders of Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON) as of Q1 2026
As of 31 Mar 2026,
Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON) was held by
72 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
5,053,214 shares.
The largest 10 holders included
VANGUARD CAPITAL MANAGEMENT LLC, JENNISON ASSOCIATES LLC, Assenagon Asset Management S.A., DIMENSIONAL FUND ADVISORS LP, Pictet Asset Management Holding SA, Aberdeen Group plc, VANGUARD PORTFOLIO MANAGEMENT LLC, VANGUARD FIDUCIARY TRUST CO, Bank of New York Mellon Corp, and BNP PARIBAS FINANCIAL MARKETS.
This page lists
77
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
194
Q1 2026 holders
72
Holder diff
-122
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.