Disc Medicine Ownership | Who Owns Disc Medicine?

Disc Medicine Ownership Summary

Disc Medicine is owned by 118.43% institutional investors, 7.78% insiders. Fmr is the largest institutional shareholder, holding 15.83% of IRON shares. Strategic Advisers Fidelity US TtlStk is the top mutual fund, with 4.89% of its assets in Disc Medicine shares.

IRON Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Disc Medicine	118.43%	7.78%	-26.22%
Sector	Healthcare Stocks	35.75%	11.89%	52.37%
Industry	Biotech Stocks	36.05%	11.82%	52.13%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	5.59M	15.83%	$357.23M
Ra capital management	2.45M	6.94%	$156.67M
Blackrock funding, inc. /de	2.27M	6.44%	$145.39M
Vanguard group	1.77M	5.02%	$140.37M
Wellington management group llp	1.74M	4.92%	$110.96M
State street	1.70M	4.81%	$108.59M
Price t rowe associates inc /md/	1.55M	4.39%	$99.07M
Atlas venture life science advisors	1.51M	4.29%	$96.80M
Jpmorgan chase	1.37M	3.89%	$83.36M
Frazier life sciences management	1.35M	3.84%	$86.63M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Atlas venture life science advisors	1.51M	12.25%	$96.80M
Foresite capital management v	374.07K	8.83%	$23.92M
Checkpoint capital	286.66K	6.58%	$18.33M
Saturn v capital management	449.93K	5.21%	$28.77M
Palo alto investors lp	401.72K	3.93%	$25.69M
Opaleye management	421.00K	3.55%	$26.92M
Lion point capital, lp	8.10K	3.10%	$517.91K
Bvf inc/il	1.27M	2.59%	$81.35M
Tcg crossover management	1.34M	2.45%	$85.80M
Frazier life sciences management	1.35M	2.23%	$86.63M

Top Buyers

Holder	Shares	% Assets	Change
Tcg crossover management	1.34M	2.45%	1.34M
Bvf inc/il	1.27M	2.59%	622.31K
State street	1.70M	0.00%	510.25K
Ra capital management	2.45M	1.66%	474.09K
Bellevue group	459.31K	0.70%	459.31K

Top Sellers

Holder	Shares	% Assets	Change
Paradigm biocapital advisors lp	247.72K	0.47%	-963.25K
First light asset management	-	-	-523.17K
Perceptive advisors	-	-	-450.74K
Bioimpact capital	-	-	-346.40K
Great point partners	-	-	-250.00K

New Positions

Holder	Shares	% Assets	Change	Value
Bellevue group	459.31K	0.70%	459.31K	$29.37M
Octagon capital advisors lp	270.00K	1.91%	270.00K	$17.26M
Vanguard fiduciary trust	217.44K	0.00%	217.44K	$13.90M
Silverarc capital management	196.03K	1.28%	196.03K	$12.53M
Integral health asset management	170.00K	0.52%	170.00K	$10.87M

Sold Out

Holder	Change
Srs capital advisors	-2.00
Parallel advisors	-4.00
Amundi	-5.00
Corecap advisors	-9.00
Stephens consulting	-10.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	205	3.02%	41,801,986	9.16%	118	1.00%	128	-	43	-12.24%
Dec 31, 2025	44	-74.42%	5,560,393	-83.75%	15	0.17%	31	-64.37%	8	-82.98%
Sep 30, 2025	51	-66.45%	3,188,170	-90.64%	9	0.10%	26	-73.20%	13	-63.89%
Jun 30, 2025	151	-4.43%	34,062,461	12.23%	97	1.17%	96	-4.00%	36	16.13%
Mar 31, 2025	159	1.27%	33,141,259	24.71%	99	1.26%	100	13.64%	32	-27.27%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Strategic Advisers Fidelity US TtlStk	1.87M	4.89%	55.00K
State Street® SPDR® S&P® Biotech ETF	1.12M	2.93%	-6.90K
Vanguard Total Stock Mkt Idx Inv	993.63K	2.60%	4.13K
Fidelity Select Health Care	690.00K	1.81%	40.00K
iShares Russell 2000 ETF	653.20K	1.71%	6.03K
US Small-Cap Growth II Equity Comp	504.99K	1.32%	33.13K
T. Rowe Price New Horizons	504.76K	1.32%	-226.00
Fidelity Select Biotechnology	494.47K	1.29%	-37.70K
Fidelity Small Cap Growth	398.36K	1.04%	-
Eventide Healthcare & Life Sciences I	395.24K	1.03%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jun 29, 2026	Khara Rahul	Chief Legal Officer	Sell	$123.67K
Jun 26, 2026	Yu Jonathan Yen-Wen	Chief Operating Officer	Sell	$21.75K
Jun 22, 2026	Yu Jonathan Yen-Wen	Chief Operating Officer	Sell	$704.80K
Jun 18, 2026	Khara Rahul	Chief Legal Officer	Sell	$377.69K
Jun 18, 2026	Khara Rahul	Chief Legal Officer	Sell	$113.16K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	15
2026 Q1	-	15
2025 Q4	-	58
2025 Q3	-	12
2025 Q2	-	4

IRON Ownership FAQ

Who Owns Disc Medicine?

Disc Medicine shareholders are primarily institutional investors at 118.43%, followed by 7.78% insiders and -26.21% retail investors. The average institutional ownership in Disc Medicine's industry, Biotech Stocks , is 36.05%, which Disc Medicine exceeds.

Who owns the most shares of Disc Medicine?

Disc Medicine’s largest shareholders are Fmr (5.59M shares, 15.83%), Ra capital management (2.45M shares, 6.94%), and Blackrock funding, inc. /de (2.27M shares, 6.44%). Together, they hold 29.21% of Disc Medicine’s total shares outstanding.

Does Blackrock own Disc Medicine?

BlackRock is not among the top 10 institutional shareholders of Disc Medicine.

Who is Disc Medicine’s biggest shareholder by percentage of total assets invested?

Atlas venture life science advisors is Disc Medicine’s biggest shareholder by percentage of total assets invested, with 12.25% of its assets in 1.51M Disc Medicine shares, valued at 96.8M$.

Who is the top mutual fund holder of Disc Medicine shares?

Strategic Advisers Fidelity US TtlStk is the top mutual fund holder of Disc Medicine shares, with 4.89% of its total shares outstanding invested in 1.87M Disc Medicine shares.

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