Security key
254604101
Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON)
CUSIP: 254604101
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Common Stock, $0.0001 par value per share
- Shares outstanding
- 37,778,373
- Total 13F shares
- 38,292,771
- Share change
- +3,887,626
- Total reported value
- $3,040,405,091
- Put/Call ratio
- 321%
- Price per share
- $79.41
- Number of holders
- 195
- Value change
- +$327,723,771
- Number of buys
- 120
- Number of sells
- 59
Report period
Q4 2025
Institutions
195
Top holders
10
IRON full security history
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Disc Medicine, Inc. SEC filings
Disc Medicine, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 254604101
Recent filing periods:
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 first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings 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
|
4,935,159
|
$326,115,306 | — | 30 Sep 2025 | |
| 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 | |
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
13F
|
Company |
5.9%
|
2,228,924
|
$177,001,530 | $0 | 30 Dec 2025 | |
| ORBIMED ADVISORS LLC |
13F
13D/G
3/4/5
|
Company · Director |
4.5%
from 13D/G
|
1,415,020
|
$93,504,522 | — | 30 Sep 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
|
Company |
4.1%
from 13D/G
|
1,410,077
|
$93,177,887 | — | 30 Sep 2025 | |
| Paradigm Biocapital Advisors LP |
13D/G
13F
|
Company |
3.5%
|
1,210,971
|
$57,097,283 | $0 | 31 Mar 2025 | |
| Bain Capital Life Sciences Opportunities III, LP |
13D/G
|
— |
3.3%
|
983,500
|
$46,372,025 | $0 | 31 Dec 2024 | |
| Frazier Life Sciences Public Fund, L.P. |
13D/G
|
— |
3%
|
1,026,489
|
$57,339,676 | $0 | 30 Jun 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 | |
| Kevin Bitterman |
3/4/5
|
Director |
0.04%
|
14,013
|
$1,281,769 | -$36,590,630 | 17 Dec 2025 | |
| Atlas Venture Life Science Advisors, LLC |
13F
|
Company |
5.7%
|
2,142,617
|
$141,584,131 | — | 30 Sep 2025 | |
| BlackRock, Inc. |
13F
|
Company |
5.3%
|
2,019,283
|
$133,434,221 | — | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
3.8%
|
1,448,059
|
$95,687,738 | — | 30 Sep 2025 | |
| Frazier Life Sciences Management, L.P. |
13F
|
Company |
3.8%
|
1,438,534
|
$95,058,327 | — | 30 Sep 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
3.5%
|
1,326,429
|
$87,651,000 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.8%
|
1,045,597
|
$69,093,050 | — | 30 Sep 2025 | |
| DEERFIELD MANAGEMENT COMPANY, L.P. |
13F
|
Company |
2.4%
|
919,403
|
$60,754,150 | — | 30 Sep 2025 | |
| Siren, L.L.C. |
13F
|
Individual |
2.4%
|
913,401
|
$60,357,538 | — | 30 Sep 2025 | |
| Woodline Partners LP |
13F
|
Company |
2.3%
|
866,955
|
$57,288,386 | — | 30 Sep 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
2%
|
752,879
|
$49,750,244 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.7%
|
628,151
|
$41,515,834 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.4%
|
529,081
|
$34,961,672 | — | 30 Sep 2025 | |
| Vestal Point Capital, LP |
13F
|
Company |
1.3%
|
500,000
|
$33,040,000 | — | 30 Sep 2025 | |
| TCG Crossover Management, LLC |
13F
|
Company |
1.2%
|
465,257
|
$30,744,183 | — | 30 Sep 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
1.2%
|
450,000
|
$29,736,000 | — | 30 Sep 2025 | |
| Logos Global Management LP |
13F
|
Company |
1.2%
|
450,000
|
$29,736,000 | — | 30 Sep 2025 | |
| ARMISTICE CAPITAL, LLC |
13F
|
Company |
1.2%
|
436,000
|
$28,810,880 | — | 30 Sep 2025 | |
| Checkpoint Capital L.P. |
13F
|
Company |
1.1%
|
430,000
|
$28,414,400 | — | 30 Sep 2025 | |
| First Turn Management, LLC |
13F
|
Company |
1.1%
|
397,693
|
$26,279,553 | — | 30 Sep 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
0.96%
|
361,704
|
$23,901,085 | — | 30 Sep 2025 | |
| Saturn V Capital Management LP |
13F
|
Company |
0.9%
|
340,897
|
$22,526,474 | — | 30 Sep 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
0.89%
|
338,101
|
$22,341,714 | — | 30 Sep 2025 | |
| BAKER BROS. ADVISORS LP |
13F
|
Company |
0.89%
|
337,050
|
$22,272,264 | — | 30 Sep 2025 | |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
|
Company |
0.82%
|
308,043
|
$20,355,468 | — | 30 Sep 2025 | |
| Foresite Capital Management V, LLC |
13F
|
Company |
0.79%
|
299,069
|
$19,762,480 | — | 30 Sep 2025 | |
| Nantahala Capital Management, LLC |
13F
|
Company |
0.76%
|
287,800
|
$19,017,824 | — | 30 Sep 2025 | |
| Sio Capital Management, LLC |
13F
|
Company |
0.75%
|
284,787
|
$18,818,725 | — | 30 Sep 2025 | |
| First Light Asset Management, LLC |
13F
|
Company |
0.61%
|
231,186
|
$15,276,771 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.61%
|
230,423
|
$15,223,560 | — | 30 Sep 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.6%
|
226,655
|
$14,977,362 | — | 30 Sep 2025 | |
| Palo Alto Investors LP |
13F
|
Company |
0.59%
|
224,300
|
$14,821,744 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.58%
|
219,489
|
$14,503,833 | — | 30 Sep 2025 | |
| Catalio Capital Management, LP |
13F
|
Company |
0.57%
|
216,527
|
$14,308,104 | — | 30 Sep 2025 | |
| Opaleye Management Inc. |
13F
|
Company |
0.51%
|
193,773
|
$12,804,520 | — | 30 Sep 2025 | |
| TimesSquare Capital Management, LLC |
13F
|
Company |
0.48%
|
182,170
|
$12,037,794 | — | 30 Sep 2025 | |
| Ensign Peak Advisors, Inc |
13F
|
Company |
0.47%
|
177,050
|
$11,699,464 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.45%
|
171,623
|
$11,340,848 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.43%
|
161,184
|
$10,651,038 | — | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.43%
|
161,000
|
$10,638,880 | — | 30 Sep 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.4%
|
149,864
|
$9,903,013 | — | 30 Sep 2025 |
Institutional Holders of Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON) as of Q4 2025
As of 31 Dec 2025,
Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON) was held by
195 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
38,292,771 shares.
The largest 10 holders included
FMR LLC, BlackRock, Inc., RA CAPITAL MANAGEMENT, L.P., VANGUARD GROUP INC, PRICE T ROWE ASSOCIATES INC /MD/, JPMORGAN CHASE & CO, WELLINGTON MANAGEMENT GROUP LLP, Atlas Venture Life Science Advisors, LLC, Frazier Life Sciences Management, L.P., and STATE STREET CORP.
This page lists
195
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
164
Q4 2025 holders
195
Holder diff
31
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 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.