ASP Isotopes ASPI Institutional Ownership

NASDAQ ASPI

$2.58 -0.08 (-2.83%)

As of: Oct 1, 2026 · 12:15 PM EDT

Institutions by Trading Activity

187 Institutions

Increased 114 61.0%

Unchanged 20 10.7%

Reduced 53 28.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

54.08%

▲+1.73 pp QoQ

Shares Held by Institutions

66.36Mn

of 122.72Mn outstanding

▲+9.16% QoQ

Shares Outstanding

122.72Mn

56.35Mn held outside 13F filers

Institutional Investors

187

filed 13F for Jun 2026

▲+11 vs prior quarter

Net Shares Added (QoQ)

+5.57Mn

accumulated since last quarter

Value of Holdings

$175.86Mn

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

ASP Isotopes Inc. (NASDAQ:ASPI) is held by 187 institutional investors per 13F filings through June 2026.

Their combined ownership stood at 54.1% of outstanding shares in June 2026, up from 52.3% in March 2026.
Their total shares held in ASPI increased 9.16% from the prior quarter, while the number of investors in ASP Isotopes increased 44.96% year over year.
Of these 187 funds, 114 grew their exposure to ASP Isotopes, 53 cut back, and 20 maintained positions.
Institutional investors collectively held 66.36Mn shares in ASP Isotopes as of June 2026, up by 5.57Mn shares quarter on quarter, and up 23.25Mn shares year over year.
BlackRock, Inc. holds the largest position in ASPI at 9.22Mn shares as of June 30, 2026, or 7.51% of shares outstanding.
Top purchasers of ASPI stock for the quarter ending June 2026 included Sixth Street Partners Management Company, L.P. (935.35K), BlackRock, Inc. (889.05K), MARSHALL WACE, LLP (835.66K), Man Group plc (828.38K), Pacer Advisors, Inc. (734.96K).
Leading sellers of ASP Isotopes shares for the quarter ending June 2026 were JANE STREET GROUP, LLC (663.38K), AWM Investment Company, Inc. (543.01K), Diametric Capital, LP (414.99K), Morgan Stanley (414.09K), CITADEL ADVISORS LLC (410.42K).
Per Business Quant data, the top 10 holders of ASP Isotopes for the quarter ending June 2026 are BlackRock, Inc. (9.22Mn), Encompass Capital Advisors LLC (6.56Mn), VANGUARD CAPITAL MANAGEMENT LLC (4.98Mn), Rovida Investment Management Ltd (4.1Mn), UBS Group AG (3.25Mn), GEODE CAPITAL MANAGEMENT, LLC (2.95Mn), Alyeska Investment Group, L.P. (2.84Mn), State Street Corp (2.6Mn), EXCHANGE TRADED CONCEPTS, LLC (2.26Mn), AWM Investment Company, Inc. (1.58Mn).

Form 13F Holdings

187 Institutional Holders

Report period 30 Jun, 2026

Total shares held 66.36Mn

Of outstanding 54.08%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	9,217,198	7.51%	▲889,054	+10.68%	$57.33Mn
2	Encompass Capital Advisors LLC	0001541901	6,561,754	5.35%	▼350,300	-5.07%	$40.81Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	4,982,953	4.06%	▼77,511	-1.53%	$30.99Mn
4	Rovida Investment Management Ltd	0002053064	4,100,000	3.34%	0	0.00%	$25.50Mn
5	UBS Group AG	0001610520	3,247,633	2.65%	▲405,924	+14.28%	$20.20Mn
6	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,945,901	2.40%	▲205,437	+7.50%	$18.33Mn
7	Alyeska Investment Group, L.P.	0001453072	2,843,503	2.32%	▲151,337	+5.62%	$17.69Mn
8	State Street Corp	0000093751	2,595,573	2.12%	▲273,414	+11.77%	$16.14Mn
9	EXCHANGE TRADED CONCEPTS, LLC	0001457320	2,255,509	1.84%	▲71,955	+3.30%	$14.03Mn
10	AWM Investment Company, Inc.	0001535264	1,581,490	1.29%	▼543,006	-25.56%	$9.84Mn
11	BNP Paribas Asset Management Holding S.A.	0001520354	1,577,016	1.29%	▲689,771	+77.74%	$9.81Mn
12	Philadelphia Financial Management of San Francisco, LLC	0001351407	1,343,007	1.09%	▲694,666	+107.15%	$8.35Mn
13	Morgan Stanley	0000895421	1,162,320	0.95%	▼414,093	-26.27%	$7.23Mn
14	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,115,391	0.91%	▲138,221	+14.15%	$6.94Mn
15	Northern Trust Corp	0000073124	1,007,214	0.82%	▲69,691	+7.43%	$6.26Mn
16	Sixth Street Partners Management Company, L.P.	0001812095	935,352	0.76%	▲935,352	0.00%	$5.82Mn
16	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	935,352	0.76%	▲38,116	+4.25%	$5.82Mn
17	Barclays Plc	0000312069	847,781	0.69%	▼165,175	-16.31%	$5.27Mn
18	MARSHALL WACE, LLP	0001318757	835,656	0.68%	▲835,656	0.00%	$5.20Mn
19	Man Group plc	0001637460	828,377	0.68%	▲828,377	0.00%	$5.15Mn

Showing 1 to 20 of 187 holders