Definium Therapeutics DFTX Institutional Ownership

NASDAQ DFTX

$38.41 +2.24 (+6.19%)

At close: Sep 28, 2026 · 4:00 PM EDT

Institutions by Trading Activity

360 Institutions

Increased 265 73.6%

Unchanged 32 8.9%

Reduced 63 17.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

104.70%

▲+33.07 pp QoQ

Shares Held by Institutions

115.89Mn

of 110.68Mn outstanding

▲+62.56% QoQ

Shares Outstanding

110.68Mn

-5.20Mn held outside 13F filers

Institutional Investors

360

filed 13F for Jun 2026

▲+115 vs prior quarter

Net Shares Added (QoQ)

+44.60Mn

accumulated since last quarter

Value of Holdings

$4.19Bn

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

Definium Therapeutics, Inc. (NASDAQ:DFTX) has 360 institutional investors with active 13F positions as of June 2026.

Collectively, these holders controlled 104.7% of Definium Therapeutics's outstanding shares in June 2026, up from 71.6% in March 2026.
Their total shares held in DFTX increased 62.56% from the prior quarter, while the number of investors in Definium Therapeutics stayed flat year over year.
Among the 360 funds, 265 bought more Definium Therapeutics shares, 63 sold down, and 32 held their ground.
Altogether, these fund groups held 115.89Mn shares in DFTX by June 2026, up by 44.6Mn shares quarter on quarter, and with no net change year over year.
As of June 30, 2026, the biggest holder of Definium Therapeutics is BlackRock, Inc. at 11.23Mn shares, representing 10.15% of shares outstanding.
The largest buyers of Definium Therapeutics for the quarter ending June 2026 were Jupiter Topco LLC (5.62Mn), Capital World Investors (5.37Mn), PRICE T ROWE ASSOCIATES INC /MD/ (4.58Mn), Capital International Investors (2.96Mn), FMR LLC (2.94Mn).
Top sellers of DFTX stock for the quarter ending June 2026 included ArrowMark Colorado Holdings LLC (1.03Mn), Candriam S.C.A. (679.2K), MILLENNIUM MANAGEMENT LLC (580.82K), Catalio Capital Management, LP (475.31K), ORBIMED ADVISORS LLC (438.6K).
Definium Therapeutics's 10 largest shareholders as of June 2026 include BlackRock, Inc. (11.23Mn), Avoro Capital Advisors LLC (7.19Mn), DRIEHAUS CAPITAL MANAGEMENT LLC (6.85Mn), Jupiter Topco LLC (5.62Mn), Capital World Investors (5.37Mn), FMR LLC (4.75Mn), PRICE T ROWE ASSOCIATES INC /MD/ (4.65Mn), GEODE CAPITAL MANAGEMENT, LLC (3.64Mn), State Street Corp (3.07Mn), Capital International Investors (2.96Mn) per Business Quant data.

Form 13F Holdings

360 Institutional Holders

Report period 30 Jun, 2026

Total shares held 115.89Mn

Of outstanding 104.70%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	11,232,834	10.15%	▲2,752,604	+32.46%	$528.39Mn
2	Avoro Capital Advisors LLC	0001633313	7,188,888	6.49%	▲2,188,888	+43.78%	$338.17Mn
3	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	6,845,276	6.18%	▲933,387	+15.79%	$322.00Mn
4	Jupiter Topco LLC	0002146052	5,615,645	5.07%	▲5,615,645	0.00%	$264.00Mn
5	Capital World Investors	0001422849	5,367,723	4.85%	▲5,367,723	0.00%	$252.50Mn
6	FMR LLC	0000315066	4,752,921	4.29%	▲2,943,311	+162.65%	$223.58Mn
7	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	4,652,032	4.20%	▲4,582,031	+6,545.67%	$218.83K
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	3,644,813	3.29%	▲1,149,414	+46.06%	$171.48Mn
9	State Street Corp	0000093751	3,065,390	2.77%	▲593,517	+24.01%	$144.20Mn
10	Capital International Investors	0001562230	2,963,410	2.68%	▲2,963,410	0.00%	$139.40Mn
11	Octagon Capital Advisors LP	0001839435	2,950,000	2.67%	▲510,000	+20.90%	$138.77Mn
12	WELLINGTON MANAGEMENT GROUP LLP	0000902219	2,949,734	2.66%	▲1,644,985	+126.08%	$138.76Mn
13	Deep Track Capital, LP	0001856083	2,750,000	2.48%	▼250,000	-8.33%	$129.36Mn
14	Commodore Capital LP	0001831942	2,000,000	1.81%	0	0.00%	$94.08Mn
15	ALLIANCEBERNSTEIN L.P.	0001109448	1,803,287	1.63%	▲1,711,584	+1,866.44%	$34.08Mn
16	Goldman Sachs Group Inc	0000886982	1,800,852	1.63%	▲125,441	+7.49%	$84.71Mn
17	CITADEL ADVISORS LLC	0001423053	1,688,587	1.53%	▲355,145	+26.63%	$79.43Mn
18	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,648,426	1.49%	▲775,761	+88.90%	$77.54Mn
19	RA CAPITAL MANAGEMENT, L.P.	0001346824	1,500,000	1.36%	▲1,500,000	0.00%	$70.56Mn
20	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,486,454	1.34%	▲389,476	+35.50%	$69.92Mn

Showing 1 to 20 of 360 holders