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Disclosery

ASPI ASP ISOTOPES INC

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COM (common), issuer CIK 1921865

130 managers (131 13F filers) reported a position in ASPI shares at 2025-06-30, 41,512,863 shares in all. 44 filers opened a position and 13 filers sold out during the quarter.

Managers
130
13F filers
131
New
44
Added
50
Reduced
24
Sold out
13
Shares held by filers
41,512,863

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.4,179,934$30.8M0.11%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.4,028,715$29.7M<0.01%-22,36513F-HRTimelineGroup
AWM Investment Company, Inc.3,931,186$28.9M3.24%-580,00013F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC3,275,739$24.1M<0.01%+187,68713F-HRTimelineGroup
Capital Research Global Investorsin group Capital Research Global Inves…2,868,062$21.1M<0.01%013F-HRTimelineGroup
Philadelphia Financial Management of Sa…2,670,211$19.7M4.36%-837,85113F-HRTimeline
Rovida Investment Management Ltd2,200,000$16.1M2.99%+1,850,00013F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …1,965,484$14.5M0.04%-1,672,73113F-HRTimelineGroup
UBS Group AGin group UBS Group AG1,428,276$10.5M<0.01%+412,81213F-HRTimelineGroup
Telemark Asset Management, LLC1,425,000$10.5M1.11%-50,00013F-HRTimeline
Driehaus Capital Management LLC1,405,414$10.3M0.08%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,348,072$9.92M<0.01%+94,75113F-HRTimelineGroup
EXCHANGE TRADED CONCEPTS, LLC1,303,414$9.59M0.12%new13F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,114,200$8.2M<0.01%+66,85613F-HRTimelineGroup
GROUP ONE TRADING LLC706,788$5.2M0.17%+437,16013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.471,219$3.47M<0.01%+450,77613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY451,329$3.32M<0.01%+188,86613F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP433,288$3.19M<0.01%-27,44113F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP384,326$2.83M0.2%-185,25213F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP342,912$2.52M<0.01%+139,84513F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL334,998$2.47M0.02%+184,97513F-HRTimeline
Diametric Capital, LP269,527$1.98M1.06%-123,49813F-HRTimeline
SIMPLEX TRADING, LLC240,150$1.77M0.05%+237,57213F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC225,249$1.66M0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO219,105$1.61M<0.01%-9,60113F-HRTimelineGroup
Rathbones Group PLC208,149$1.53M0.01%+2,22013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC175,948$1.29M<0.01%+91,40713F-HR/ATimelineGroup
POLEN CAPITAL MANAGEMENT LLC175,138$1.29M<0.01%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co174,928$1.29M<0.01%+9,56413F-HRTimelineGroup
BANTAMAC CAPITAL, LLC175,138$1.29M0.46%+153,13813F-HRTimeline
Creative Planningin group Creative Planning172,770$1.27M<0.01%new13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp153,154$1.13M<0.01%+10,89713F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC149,434$1.1M<0.01%new13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC145,203$1.07M<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/132,556$976K<0.01%+30,88013F-HRTimelineGroup
Nuveen, LLCin group TIAA131,997$971K<0.01%+76713F-HRTimelineGroup
OMERS ADMINISTRATION Corp121,800$896K0.01%new13F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC105,452$776K0.08%-48,31813F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…102,291$753K<0.01%-175,55513F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.98,870$728K<0.01%+69,34013F-HRTimeline
Farther Finance Advisors, LLC95,999$707K0.01%new13F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC93,287$687K0.04%new13F-HRTimelineGroup
Steward Partners Investment Advisory, L…81,700$601K<0.01%013F-HRTimeline
RHUMBLINE ADVISERS78,994$581K<0.01%+13,66813F-HRTimeline
Informed Momentum Co LLC76,716$565K0.09%new13F-HRTimeline
IMC-Chicago, LLC75,277$554K0.01%new13F-HRTimeline
Marex Group Ltdin group Marex Group Ltd75,000$552K0.01%-7,53513F-HRTimelineGroup
Verition Fund Management LLC70,259$517K<0.01%new13F-HRTimeline
Scientech Research LLC69,253$510K0.12%new13F-HRTimeline
Destination Wealth Management56,964$419K0.01%013F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC52,998$390K<0.01%new13F-HRTimeline
MML INVESTORS SERVICES, LLC47,008$346K<0.01%new13F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …45,000$331K<0.01%new13F-HRTimelineGroup
Saranac Partners Ltd44,195$325K0.17%013F-HRTimeline
Shay Capital LLC43,500$320K0.07%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP38,452$283K<0.01%new13F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\36,999$272K<0.01%-3,09313F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…34,897$257K<0.01%+3,16513F-HRTimelineGroup
AlphaQuest LLC34,716$256K0.03%new13F-HRTimeline
Sanctuary Advisors, LLC34,266$252K<0.01%+21,08213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP33,937$250K<0.01%-144,19713F-HRTimelineGroup
Allegheny Financial Group33,891$249K0.06%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC32,281$238K<0.01%+13,96813F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…31,678$233K<0.01%+6513F-HRTimelineGroup
Harbour Capital Advisors, LLC33,025$232K0.05%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN29,369$216K<0.01%+3,25413F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC28,645$211K<0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC28,449$209K<0.01%-59,05813F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/27,000$199K<0.01%+2,00013F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/26,597$196K<0.01%+3,47613F-HRTimeline
PFG Investments, LLC26,500$195K0.01%+6,50013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC25,756$190K<0.01%-1,19613F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA24,571$181K<0.01%+14,49913F-HR/ATimelineGroup
XTX Topco Ltdin group XTX Topco Ltd24,155$178K0.01%new13F-HRTimelineGroup
Apis Capital Advisors, LLC24,000$177K0.06%-167,00013F-HRTimeline
Belvedere Trading LLC23,630$174K0.01%new13F-HRTimeline
SBI Securities Co., Ltd.21,279$157K<0.01%+11,90913F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …20,840$153K<0.01%+1,87813F-HRTimelineGroup
Leonteq Securities AG20,639$152K0.01%+9,00013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC20,177$149K<0.01%-18,71713F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV19,434$143K<0.01%+6,24313F-HRTimeline
LPL Financial LLC19,227$142K<0.01%new13F-HRTimeline
Penn Capital Management Company, LLC18,665$137K0.01%new13F-HRTimeline
Fielder Capital Group LLC18,070$133K0.04%+1013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND17,100$126K<0.01%+13,80013F-HR/ATimeline
Advisory Services Network, LLC13,835$125K<0.01%new13F-HRTimeline
B. Riley Wealth Advisors, Inc.16,380$121K0.01%-2,40013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC15,829$117K<0.01%+1,31813F-HRTimelineGroup
Perennial Advisors, LLC15,000$110K0.02%new13F-HRTimeline
FORA Capital, LLC14,569$107K0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…14,366$106K<0.01%013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC14,035$103K<0.01%-9,71113F-HRTimelineGroup
WOLVERINE TRADING, LLC13,278$98.3K<0.01%new13F-HRTimeline
KKM Financial LLC12,000$88.3K0.03%013F-HRTimeline
ProShare Advisors LLC11,653$85.8K<0.01%-17713F-HRTimeline
GTS SECURITIES LLC11,311$83.2K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…10,890$80.2K<0.01%+5,35313F-HRTimelineGroup
AVANTAX ADVISORY SERVICES, INC.10,493$77.2K<0.01%+35213F-HRTimeline
FMR LLCin group FMR LLC10,361$76.3K<0.01%+78113F-HRTimelineGroup
Pale Fire Capital SEin group Pale Fire Capital10,300$75.8K0.01%-40013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…9,424$69.4K<0.01%+56513F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.7,500$55.2K<0.01%+90013F-HR/ATimelineGroup
Legal & General Group Plcin group Legal & General Group Plc6,424$47.3K<0.01%-6013F-HRTimelineGroup
Ameritas Investment Partners, Inc.group of 2 filers holding5,733$42.2K+1,850Timeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS5,549$40.8K<0.01%+2,54813F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…3,765$27.7K<0.01%013F-HRTimeline
Caitong International Asset Management …2,927$21.5K0.02%+2,88313F-HRTimeline
Federation des caisses Desjardins du Qu…2,680$19.7K<0.01%013F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/2,514$18.5K<0.01%-6,08613F-HR/ATimelineGroup
AMALGAMATED BANK1,808$13K<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC1,697$12.5K<0.01%new13F-HRTimelineGroup
Parallel Advisors, LLC1,537$11.3K<0.01%new13F-HRTimeline
MAI Capital Management1,125$8.28K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC1,038$7.64K<0.01%+90013F-HRTimeline
SIGNATUREFD, LLC1,000$7.36K<0.01%new13F-HRTimeline
FNY Investment Advisers, LLC1,000$7K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP914$6.76K<0.01%new13F-HRTimelineGroup
Activest Wealth Management480$3.53K<0.01%new13F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.300$2.21K<0.01%013F-HRTimelineGroup
ORG Partners LLC235$1.65K<0.01%013F-HRTimeline
Rise Advisors, LLC193$1.42K<0.01%+7413F-HRTimeline
GAMMA Investing LLC168$1.24K<0.01%+2313F-HRTimeline
Sterling Capital Management LLC154$1.13K<0.01%+9913F-HR/ATimeline
CWM, LLCin group CWM, LLC145$1K<0.01%+2913F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.129$949<0.01%new13F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…112$824<0.01%new13F-HRTimelineGroup
Brooklyn Investment Group82$604<0.01%new13F-HR/ATimeline
US BANCORP \DE\in group US BANCORP \DE\74$544<0.01%+2013F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC35$258<0.01%new13F-HRTimeline
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.