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DaveManuel.com · Institutional Ownership · Who Owns It

ASP ISOTOPES INC (ASPI)

Institutional ownership reported to the SEC as of Q2 2026, across 16 quarters.

192
Reporting holders
$479.0M
Reported value
52.0%
Of shares outstanding
10.6%
Calls
4.6%
Puts
+11
Holder change

Institutions report 65,445,472 shares against 125,903,447 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.

Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.

Holders

Download these holders as CSV

FilerValueShares Their book Held Change
BlackRock, Inc.$57.3M9,217,1980.00%8q+10.7%+$5.5M
Encompass Capital Advisors LLC$40.8M6,561,7541.45%2q-5.1%-$2.2M
VANGUARD CAPITAL MANAGEMENT LLC$31.0M4,982,9530.00%2q-1.5%-$482.1K
SUSQUEHANNA INTERNATIONAL GROUP, LLP$28.3M
incl. $23.9M options CALL+PUT
705,1530.00%9q-33.3%-$14.1M
Rovida Investment Management Ltd$25.5M4,100,0001.74%7qHELD
UBS Group AG$23.4M
incl. $3.2M options CALL
3,247,6330.00%9q+14.3%+$2.9M
GEODE CAPITAL MANAGEMENT, LLC$18.3M2,945,9010.00%12q+7.5%+$1.3M
Alyeska Investment Group, L.P.$17.7M2,843,5030.05%5q+5.6%+$941.3K
STATE STREET CORP$16.1M2,595,5730.00%11q+11.8%+$1.7M
EXCHANGE TRADED CONCEPTS, LLC$14.0M2,255,5090.06%5q+3.3%+$447.6K
CITADEL ADVISORS LLC$10.7M
incl. $8.4M options CALL+PUT
357,5910.00%7q-53.4%-$12.2M
AWM Investment Company, Inc.$9.8M1,581,4900.85%8q-25.6%-$3.4M
BNP PARIBAS ASSET MANAGEMENT Holding S.A.$9.8M1,577,0160.01%8q+77.7%+$4.3M
GROUP ONE TRADING LLC$9.7M
incl. $6.8M options CALL+PUT
458,3830.01%7q-23.0%-$2.9M
PEAK6 LLC$8.5M CALLoptions only0.02%6qOPTIONS
Philadelphia Financial Management of San Francisco, LLC$8.4M1,343,0071.68%2q+107.1%+$4.3M
JANE STREET GROUP, LLC$8.3M
incl. $8.2M options CALL+PUT
21,0940.00%10q-96.9%-$262.2M
MORGAN STANLEY$7.2M1,162,3200.00%10q-26.3%-$2.6M
VANGUARD PORTFOLIO MANAGEMENT LLC$6.9M1,115,3910.00%2q+14.1%+$859.7K
NORTHERN TRUST CORP$6.3M1,007,2140.00%12q+7.4%+$433.5K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC$5.8M935,3520.00%9q+4.2%+$237.1K
BARCLAYS PLC$5.3M847,7810.00%9q-16.3%-$1.0M
MARSHALL WACE, LLP$5.2M835,6560.00%newNEW
Man Group plc$5.2M828,3770.01%newNEW
VANGUARD FIDUCIARY TRUST CO$4.9M788,5610.00%2q+4.7%+$219.2K
IMC-Chicago, LLC$4.6M CALL+PUToptions only0.00%3qOPTIONS
Pacer Advisors, Inc.$4.6M734,9600.01%3q+45.8%+$1.4M
BANK OF AMERICA CORP /DE/$4.4M709,0570.00%9q+319.6%+$3.4M
GOLDMAN SACHS GROUP INC$3.6M576,2760.00%10q+9.4%+$307.8K
WIM INVESTMENT MANAGEMENT Ltd$3.4M541,4001.10%3q-10.0%-$373.2K
Diametric Capital, LP$3.3M538,5170.35%8q-43.5%-$2.6M
Nuveen, LLC$3.1M493,4210.00%6q+137.9%+$1.8M
Creek Drive Management Group LLC$2.6M CALLoptions only1.28%2qOPTIONS
SIMPLEX TRADING, LLC$2.6M
incl. $2.5M options CALL+PUT
13,6640.00%7q-77.8%-$9.0M
Shay Capital LLC$2.6M413,0000.17%5q-3.8%-$102.6K
Rathbones Group PLC$2.4M381,6190.01%11q-50.6%-$2.4M
Bank of New York Mellon Corp$2.2M356,8720.00%9q+23.5%+$422.1K
Caprock Group, LLC$2.0M321,3650.04%4qHELD
Crawford Fund Management, LLC$1.9M PUToptions only0.30%4qOPTIONS
HITE Hedge Asset Management LLC$1.9M301,8370.10%3q-7.5%-$151.7K
BANK OF MONTREAL /CAN/$1.6M262,5600.00%7q+13.3%+$191.5K
Saba Capital Management, L.P.$1.6M261,4700.04%3q-26.9%-$598.1K
JPMORGAN CHASE & CO$1.5M241,0540.00%12q-11.9%-$201.6K
Headlands Technologies LLC$1.5M240,1970.16%2q+219.6%+$1.0M
Empowered Funds, LLC$1.4M225,0890.01%3q+21.0%+$243.4K
DNB Asset Management AS$1.3M214,8800.00%2q+259.4%+$964.7K
Swiss National Bank$1.3M214,7000.00%3q+2.2%+$28.6K
Invesco Ltd.$1.3M203,9760.00%9q+260.2%+$916.5K
NATIONAL BANK OF CANADA /FI/$1.2M
incl. $622.0K options PUT
100,0000.00%7q+16.1%+$172.7K
Purewater Capital LLC$1.2M194,3870.87%2q-8.2%-$108.6K
Russell Investments Group, Ltd.$1.1M181,7760.00%8q+24.8%+$224.8K
Chicago Partners Investment Group LLC$1.1M
incl. $808 options CALL
265,4590.02%3q-29.0%-$439.2K
STIFEL FINANCIAL CORP$1.0M166,0340.00%5q+37.8%+$283.1K
Point72 Asset Management, L.P.$1.0M
incl. $274.3K options CALL
120,1590.00%2qHELD
Aquatic Capital Management LLC$1.0M163,9780.04%newNEW
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$1.0M161,2190.00%3q+43.3%+$303.2K
SBI Securities Co., Ltd.$991.1K159,3460.02%7q-3.2%-$32.9K
Cetera Investment Advisers$951.4K152,9650.00%4q+33.2%+$237.3K
POLEN CAPITAL MANAGEMENT LLC$930.3K149,5590.01%5q+21.6%+$165.4K
RHUMBLINE ADVISERS$878.8K141,2840.00%9q+20.1%+$146.8K
Squarepoint Ops LLC$771.0K123,9510.00%4q+75.6%+$331.9K
CITIGROUP INC$754.5K121,3090.00%10q+61.4%+$287.0K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM$754.1K121,2430.00%9q+55.0%+$267.7K
DEUTSCHE BANK AG\$748.7K120,3670.00%9q+28.5%+$166.1K
WELLS FARGO & COMPANY/MN$722.3K116,1190.00%12q+133.5%+$412.9K
Centiva Capital, LP$662.6K
incl. $466.5K options CALL
31,5260.01%4q-13.7%-$105.5K
Polymer Capital Management (US) LLC$656.2K105,4940.09%newNEW
Marex Group Ltd$622.6K100,1000.00%7q+9.2%+$52.2K
Canal Insurance CO$622.0K100,0000.14%4qHELD
PRICE T ROWE ASSOCIATES INC /MD/$603.0K96,9130.00%8q+20.2%+$101.2K
WINTON GROUP Ltd$587.9K94,5120.02%newNEW
D. E. Shaw & Co., Inc.$580.9K CALLoptions only0.00%newOPTIONS
OSAIC HOLDINGS, INC.$570.5K
incl. $11.5K options CALL
89,8760.00%6q+66.5%+$227.9K
Legal & General Group Plc$540.8K86,9510.00%9q+56.9%+$196.1K
FNY Investment Advisers, LLC$498.0K80,1000.18%5q-7.5%-$40.4K
ALLIANCEBERNSTEIN L.P.$476.4K107,7900.00%2q+178.1%+$305.1K
Pekin Hardy Strauss, Inc.$463.1K74,4500.04%4q-15.8%-$87.1K
VANGUARD ASSET MANAGEMENT, Ltd$462.2K74,3080.00%2qHELD
Penn Capital Management Company, LLC$440.1K70,7570.03%5q-10.2%-$50.2K
SEI INVESTMENTS CO$434.1K69,7960.00%3q-53.0%-$490.5K
MetLife Investment Management, LLC$433.7K69,7270.00%8q+9.7%+$38.2K
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/$417.6K67,1360.00%newNEW
PRELUDE CAPITAL MANAGEMENT, LLC$413.7K66,5050.03%8q-56.7%-$542.0K
Farther Finance Advisors, LLC$389.5K62,6180.00%5q-58.3%-$544.9K
MH & ASSOCIATES SECURITIES MANAGEMENT CORP /ADV$387.3K62,2650.35%3q+24.3%+$75.7K
Creative Planning$346.9K55,7790.00%5q+34.1%+$88.3K
Kingsview Wealth Management, LLC$336.5K54,1020.00%newNEW
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$333.6K53,6380.00%8q+0.6%+$1.9K
Bleakley Financial Group, LLC$310.7K49,9540.00%newNEW
AMERICAN CENTURY COMPANIES INC$298.7K48,0210.00%newNEW
Vanguard Global Advisers, LLC$267.6K43,0190.00%2qHELD
Ninety One SA (Pty) Ltd$251.8K40,4890.01%newNEW
Brevan Howard Capital Management LP$246.2K39,5760.00%4q+126.6%+$137.5K
Jupiter Topco LLC$242.8K39,0000.00%newFIRST
PFG Investments, LLC$238.8K38,4000.01%6q-74.8%-$708.5K
ROYAL BANK OF CANADA$238.0K38,2320.00%9q+0.7%+$1.7K
Advisory Services Network, LLC$216.8K
incl. $4.4K options CALL
34,1620.00%5q-15.1%-$38.6K
Police & Firemen's Retirement System of New Jersey$210.8K33,8880.00%7qHELD
Sanctuary Advisors, LLC$200.3K32,1950.00%8q+30.8%+$47.1K
KLP KAPITALFORVALTNING AS$196.6K31,6000.00%3qHELD

Showing the largest 100 of 192 reported holders.

What the company announced

Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.

FiledEvent dateWhatSource
2026-08-202026-08-14Material agreement entered Material agreement terminatedfiling

What the insiders did

Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.

Officers and directors

DateInsiderRoleSideSharesValue
2026-06-02-05:00Mann Paul ElliotChairman and CEOSold83,758$694.4K
2026-06-01-05:00Mann Paul ElliotChairman and CEOSold83,758$660.0K
2026-06-03-05:00Mann Paul ElliotChairman and CEOSold83,759$650.0K
2026-06-30-05:00Ainscow Donald GeorgeEVP, Gen Counsel, SecretarySold100,000$614.0K
2026-09-04-05:00Mann Paul ElliotChairman and CEOSold83,759$343.4K
2026-09-03-05:00Mann Paul ElliotChairman and CEOSold83,758$328.3K
2026-09-02-05:00Mann Paul ElliotChairman and CEOSold83,758$327.5K
2026-06-29-05:00Wider ToddDirectorSold50,000$312.5K
2026-06-30-05:00Wider ToddDirectorSold50,000$306.0K
2026-06-30-05:00Gorley MichaelDirectorSold30,000$188.1K
2026-07-01-05:00Kiessling HeatherChief Financial OfficerSold23,124$145.2K

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q3 202627$4.7M1,795,5419950.0%
Q2 2026192$479.0M65,445,47239725115.2%
Q1 2026181$340.1M64,233,94235743816.4%
Q4 2025178$384.3M58,972,71749773417.9%
Q3 2025161$627.2M53,313,20747693018.3%
Q2 2025133$357.5M41,543,42644472614.5%
Q1 2025104$165.9M32,596,0862037247.9%
Q4 202498$153.8M32,520,7174133194.2%
Q3 202467$62.5M22,418,164253160.0%
Q2 202450$26.9M8,799,473291190.0%
Q1 202430$16.5M3,995,163151230.0%
Q4 202319$3.0M1,674,5429630.0%
Q3 202311$292.9K308,0688030.0%
Q2 20234$1.0M551,4823100.0%
Q1 20236$2.8M3,248,5963110.0%
Q4 20223$75.3K47,2123000.0%