Disc Medicine IRON Institutional Ownership

NASDAQ IRON

$79.23 -0.14 (-0.18%)

As of: Sep 4, 2026 · 3:59 PM EDT

Institutions by Trading Activity

217 Institutions

Increased 116 53.5%

Unchanged 39 18.0%

Reduced 62 28.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

111.09%

▲+2.01 pp QoQ

Shares Held by Institutions

42.97Mn

of 38.69Mn outstanding

▲+3.52% QoQ

Shares Outstanding

38.69Mn

-4.29Mn held outside 13F filers

Institutional Investors

217

filed 13F for Jun 2026

▲+14 vs prior quarter

Net Shares Added (QoQ)

+1.46Mn

accumulated since last quarter

Value of Holdings

$3.41Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Disc Medicine, Inc. (NASDAQ:IRON) appears in 217 institutional 13F filings for the quarter ending June 2026.

Collectively, these holders controlled 111.1% of Disc Medicine's outstanding shares in June 2026, up from 109.1% in March 2026.
Their total shares held in IRON increased 3.52% from the prior quarter, while the number of investors in Disc Medicine increased 43.71% year over year.
During the quarter, 116 of these 217 funds increased positions in IRON, 62 reduced exposure, and 39 held steady.
In total, institutional investors held 42.97Mn shares in Disc Medicine as of June 2026, up by 1.46Mn shares quarter on quarter, and up 8.56Mn shares year over year.
FMR LLC holds the largest position in IRON at 4.89Mn shares as of June 30, 2026, or 12.65% of shares outstanding.
The largest buyers of Disc Medicine for the quarter ending June 2026 were Vestal Point Capital, LP (850.0K), Jpmorgan Chase & Co (504.32K), Opaleye Management Inc. (434.0K), PRICE T ROWE ASSOCIATES INC /MD/ (326.05K), Logos Global Management LP (315.0K).
The largest sales of IRON for the quarter ending June 2026 came from ORBIMED ADVISORS LLC (710.02K), FMR LLC (692.42K), Goldman Sachs Group Inc (542.46K), JENNISON ASSOCIATES LLC (170.86K), Assenagon Asset Management S.A. (162.09K).
Per Business Quant, the top 10 investors in IRON for the quarter ending June 2026 include FMR LLC (4.89Mn), BlackRock, Inc. (2.47Mn), RA CAPITAL MANAGEMENT, L.P. (2.45Mn), Jpmorgan Chase & Co (1.88Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.88Mn), WELLINGTON MANAGEMENT GROUP LLP (1.74Mn), State Street Corp (1.65Mn), Vestal Point Capital, LP (1.55Mn), Atlas Venture Life Science Advisors, LLC (1.51Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.37Mn).

Form 13F Holdings

217 Institutional Holders

Report period 30 Jun, 2026

Total shares held 42.97Mn

Of outstanding 111.09%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	FMR LLC	0000315066	4,894,473	12.65%	▼692,421	-12.39%	$357.98Mn
2	BlackRock, Inc.	0002012383	2,467,899	6.38%	▲194,068	+8.53%	$180.50Mn
3	RA CAPITAL MANAGEMENT, L.P.	0001346824	2,450,221	6.33%	0	0.00%	$179.21Mn
4	Jpmorgan Chase & Co	0000019617	1,875,795	4.85%	▲504,315	+36.77%	$139.87Mn
5	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,875,399	4.85%	▲326,049	+21.04%	$137.17K
6	WELLINGTON MANAGEMENT GROUP LLP	0000902219	1,741,351	4.50%	▲5,975	+0.34%	$127.36Mn
7	State Street Corp	0000093751	1,648,836	4.26%	▼49,408	-2.91%	$120.60Mn
8	Vestal Point Capital, LP	0001974915	1,550,000	4.01%	▲850,000	+121.43%	$113.37Mn
9	Atlas Venture Life Science Advisors, LLC	0001917529	1,513,875	3.91%	0	0.00%	$110.72Mn
10	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,369,027	3.54%	▼6,403	-0.47%	$100.13Mn
11	Frazier Life Sciences Management, L.P.	0001892134	1,354,852	3.50%	0	0.00%	$99.09Mn
12	TCG Crossover Management, LLC	0001839948	1,341,862	3.47%	0	0.00%	$98.14Mn
13	BVF INC/IL	0001056807	1,153,612	2.98%	▼118,700	-9.33%	$84.38Mn
14	Woodline Partners LP	0001784547	958,281	2.48%	0	0.00%	$70.09Mn
15	Siren, L.L.C.	0002005245	888,401	2.30%	▼100,000	-10.12%	$64.98Mn
16	Logos Global Management LP	0001792126	875,000	2.26%	▲315,000	+56.25%	$64.00Mn
17	Opaleye Management Inc.	0001595855	855,000	2.21%	▲434,000	+103.09%	$62.53Mn
18	GEODE CAPITAL MANAGEMENT, LLC	0001214717	789,724	2.04%	▲45,502	+6.11%	$57.77Mn
19	DEERFIELD MANAGEMENT COMPANY, L.P.	0001009258	657,000	1.70%	0	0.00%	$48.05Mn
20	DIMENSIONAL FUND ADVISORS LP	0000354204	569,018	1.47%	▲174,571	+44.26%	$41.62Mn

Showing 1 to 20 of 217 holders