13F

Stock

ASP Isotopes Inc.

ASPI · held by 176 managers

Reported value

$278.3M

Holders

176

+34 new · −34 exited

Holders’ est. mark

−$32.9M

Price effect on 134 books still in the name

Largest holder

$36.8M

BlackRock, Inc.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
BlackRock, Inc.8.33M$36.8M−$6.31MAdded$487K
Encompass Capital Advisors LLC6.91M$30.6MNew
VANGUARD CAPITAL MANAGEMENT LLC5.06M$22.4MHeld
Rovida Investment Management Ltd4.1M$18.1M−$3.81MCut−$3.81M
UBS Group AG2.84M$12.6M−$2.24MCut−$314.2K
GEODE CAPITAL MANAGEMENT, LLC2.74M$12.1M−$2.22MCut−$642K
Alyeska Investment Group, L.P.2.69M$11.9M−$2.5MCut−$14.3M
State Street2.32M$10.3M−$1.72MAdded$396.4K
EXCHANGE TRADED CONCEPTS, LLC2.18M$9.65M−$1.3MAdded$2.16M
AWM Investment Company, Inc.2.12M$9.39M−$1.98MCut−$1.98M
MORGAN STANLEY1.58M$6.97M−$1.47MCut−$2.18M
SUSQUEHANNA INTERNATIONAL GROUP, LLP1.06M$4.67M−$983.3KCut−$3.44M
BARCLAYS PLC1.01M$4.48M−$471.3KAdded$1.77M
VANGUARD PORTFOLIO MANAGEMENT LLC977.2K$4.32MHeld
Diametric Capital, LP953.5K$4.21M−$685.7KAdded$269.9K
NORTHERN TRUST CORP937.5K$4.14M−$693.7KAdded$153.2K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC897.2K$3.97M−$823.7KCut−$772.9K
BNP PARIBAS ASSET MANAGEMENT Holding S.A.887.2K$3.92M$3.92MAdded$3.92M
Citadel768K$3.39M−$714.2KCut−$5.84M
VANGUARD FIDUCIARY TRUST CO753.3K$3.33MHeld
JANE STREET GROUP, LLC684.5K$3.03M−$636.6KCut−$5.46M
Philadelphia Financial Management of San Francisco, LLC648.3K$2.87MNew
WIM INVESTMENT MANAGEMENT Ltd601.4K$2.66M−$559.3KCut−$559.3K
GROUP ONE TRADING LLC595.6K$2.63M−$413.2KAdded$255.4K
Sara-Bay Financial586.7K$2.59MNew
GOLDMAN SACHS GROUP INC526.8K$2.33M−$489.9KCut−$6.85M
Chicago Partners Investment Group LLC374.1K$2.1MNew
Shay Capital LLC429.5K$1.9M−$399.4KCut−$1.2M
Rathbones Group PLC386.6K$1.71M−$359.5KCut−$429.2K
Saba Capital Management, L.P.357.6K$1.58M−$331.4KCut−$325.9K
HITE Hedge Asset Management LLC326.2K$1.44M−$303.4KCut−$965K
Caprock Group, LLC321K$1.42M−$298.5KCut−$305.6K
Yaupon Capital Management LP300K$1.33MNew
Alight Capital Management LP300K$1.33MNew
Bank of New York Mellon Corp289K$1.28M−$226.9KCut−$27.9K
IMC-Chicago, LLC268.5K$1.19M−$249.7KCut−$389K
JPMORGAN CHASE & CO273.5K$1.15M−$219.8KAdded$113.5K
BURKEHILL GLOBAL MANAGEMENT, LP250K$1.1M−$232.5KCut−$232.5K
BANK OF MONTREAL /CAN/231.8K$1.02M−$109.6KAdded$393.7K
Purewater Capital LLC211.9K$936.4KHeld
Swiss National Bank210.1K$928.6K−$195.4KCut−$195.4K
Nuveen, LLC207.4K$916.9K−$169.9KCut−$60.7K
Arosa Capital Management LP200K$884K−$186KCut−$186K
Empowered Funds, LLC186K$821.9K−$125.2KAdded$101.8K
BANK OF AMERICA CORP /DE/169K$747K−$157.2KCut−$488.1K
SBI Securities Co., Ltd.164.6K$727.7K−$141.5KCut−$86.1K
TUDOR INVESTMENT CORP ET AL161K$711.8K−$123.6KAdded$545
PRELUDE CAPITAL MANAGEMENT, LLC153.7K$679.1K−$142.9KCut−$543.3K
PFG Investments, LLC152.3K$673.2K−$141.6KCut−$299.5K
SEI INVESTMENTS CO148.6K$657K−$71.6KAdded$245.1K
Massar Capital Management, LP147.4K$651.4K−$137.1KCut−$137.1K
Russell Investments Group, Ltd.145.6K$643.7K−$135.3KCut−$134.6K
Farther Finance Advisors, LLC150.2K$617.4K−$154.5KCut−$49K
POLEN CAPITAL MANAGEMENT LLC123K$543.5K−$114.4KCut−$202.9K
STIFEL FINANCIAL CORP120.5K$532.7K−$102.2KCut−$55K
RHUMBLINE ADVISERS117.7K$520.1K−$94.4KCut−$23.1K
Cetera Investment Advisers114.8K$507.5K−$66.3KAdded$126K
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC112.5K$497.1K−$95.2KCut−$50.6K
Belpointe Asset Management LLC101.6K$448.9KNew
DEUTSCHE BANK AG\93.7K$414K−$63.8KAdded$46.9K
Marex Group plc91.7K$405.3K−$79.2KCut−$50.5K
Pekin Hardy Strauss, Inc.88.5K$390.9K−$24.8KAdded$248.1K
NATIONAL BANK OF CANADA /FI/86.1K$379.8K−$58KAdded$46.6K
PEAK6 LLC79.2K$350.1K−$8.63KAdded$300.5K
Penn Capital Management Company, LLC78.8K$348.4K−$73.3KCut−$330.6K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM78.2K$345.7K−$71.8KCut−$67.4K
Balyasny Asset Management L.P.76.5K$338.2K−$71.2KCut−$92.6K
Headlands Technologies LLC75.2K$332.2KNew
CITIGROUP INC75.2K$332.2K−$69.9KCut−$70.9K
VANGUARD ASSET MANAGEMENT, Ltd74.3K$328.4KHeld
Squarepoint Ops LLC70.6K$312K−$25.6KAdded$165K
MetLife Investment Management, LLC63.6K$281.1K−$48.9KCut−$532
SIMPLEX TRADING, LLC61.6K$272.5K−$57.3KCut−$228.9K
DNB Asset Management AS59.8K$264.2KNew
Invesco Ltd.56.6K$250.3K−$52.7KCut−$68.3K
Legal & General Group Plc55.4K$245K−$51.5KCut−$164.4K
OSAIC HOLDINGS, INC.54K$238.6K−$47.1KCut−$32.6K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.53.3K$235.7K−$39.9KAdded$6K
MH & ASSOCIATES SECURITIES MANAGEMENT CORP /ADV50.1K$221.4K−$45.3KCut−$38.9K
WELLS FARGO & COMPANY/MN49.7K$219.8K−$46.3KCut−$484.6K
ALLIANCEBERNSTEIN L.P.38.8K$207.4KNew
Patriot Financial Group Insurance Agency, LLC45K$198.8K−$20.3KAdded$82K
LPL Financial LLC44.2K$195.2K−$41.1KCut−$59.4K
Vanguard Global Advisers, LLC43K$190.1KHeld
Creative Planning41.6K$183.8K−$9.7KAdded$128K
Allegheny Financial Group40.6K$179.7K−$32.1KCut−$4.76K
Advisory Services Network, LLC40.2K$177.9K−$32KCut−$5.99K
Scientech Research LLC40.2K$177.8K−$17.5KAdded$77.4K
JANUS HENDERSON GROUP PLC39K$172.2K−$36.3KCut−$36.3K
ROYAL BANK OF CANADA38K$167K−$31KCut−$5K
Centiva Capital, LP36.5K$161.5K−$25.3KAdded$16.1K
Police & Firemen's Retirement System of New Jersey33.9K$149.8K−$19.3KAdded$38.7K
Quantinno Capital Management LP33.1K$146.2K−$30.8KCut−$157.6K
KLP KAPITALFORVALTNING AS31.6K$139.7K−$15.5KAdded$50.3K
MANUFACTURERS LIFE INSURANCE COMPANY, THE30.5K$134.8K−$26.1KCut−$15.2K
ARIZONA STATE RETIREMENT SYSTEM29.2K$129.1K−$20.2KAdded$13.1K
NEW YORK STATE COMMON RETIREMENT FUND29.2K$129.1K−$13.3KAdded$52.6K
FOX RUN MANAGEMENT, L.L.C.30.4K$128.3KNew
Vanguard Investments Australia, Ltd.28.1K$124.3KHeld
BNP PARIBAS FINANCIAL MARKETS27.7K$122.2K−$18.7KAdded$14.9K
Cresset Asset Management, LLC27.3K$120.6K−$23.3KCut−$13.3K
INTECH INVESTMENT MANAGEMENT LLC26.5K$116.9K−$24.6KCut−$41K
Jump Financial, LLC26.3K$116.1KNew
Fortitude Advisory Group L.L.C.26K$115.1K−$24.2KCut−$24K
Caitong International Asset Management Co., Ltd25.3K$111.8K−$23.5KCut−$75.3K
Sanctuary Advisors, LLC24.6K$108.8K−$18.7KAdded$995
Icahn Capital23.8K$105.2K−$22.1KCut−$51.9K
Zurcher Kantonalbank (Zurich Cantonalbank)23.6K$104.3K−$21.9KCut−$21.9K
MIRABELLA FINANCIAL SERVICES LLP22.3K$98.6KNew
TOCQUEVILLE ASSET MANAGEMENT L.P.20K$88.4K−$15.8KCut−$2.55K
NEUBERGER BERMAN GROUP LLC20K$88.3K−$18.6KCut−$26.4K
VOYA INVESTMENT MANAGEMENT LLC19.1K$84.6K−$15KCut−$1.62K
Brooklyn Investment Group18.9K$83.4KNew
GUGGENHEIM CAPITAL LLC18.2K$80.6K−$12.5KAdded$8.81K
Fielder Capital Group LLC18.1K$79.9K−$16.8KCut−$16.7K
Brookwood Investment Group LLC18K$79.6KNew
Quantbot Technologies LP17.8K$78.7K−$16.6KCut−$2.04M
Brevan Howard Capital Management LP17.5K$77.2K−$16.3KCut−$308.4K
PRUDENTIAL FINANCIAL INC16.8K$74.4KNew
Tower Research Capital LLC (TRC)16.6K$73.3K−$1.51KAdded$64.6K
ProShare Advisors LLC16.5K$72.8K−$15.3KCut−$17.6K
Perennial Advisors, LLC15K$66.3K−$13.9KCut−$13.9K
DRW Securities, LLC15K$66.1K−$11.5KAdded$68
MERCER GLOBAL ADVISORS INC /ADV14.8K$65.3K−$13.7KCut−$71.4K
Fidelity14.4K$63.5K−$11.8KCut−$4.54K
VICTORY CAPITAL MANAGEMENT INC12.8K$56.6K−$10.4KCut−$3.5K
Allworth Financial LP12.4K$55K−$47Added$54.7K
CAPTRUST FINANCIAL ADVISORS12.3K$54.4KNew
Chicago Capital, LLC12K$53K−$11.2KCut−$11.2K
XTX Topco Ltd11.9K$52.7KNew
Verition Fund Management LLC11.7K$51.6K−$10.9KCut−$952.7K
Pictet Asset Management Holding SA11.3K$50.1K−$10.5KCut−$10.5K
COMMONWEALTH EQUITY SERVICES, LLC10.7K$47.2K−$9.92KCut−$193.1K
CALTON & ASSOCIATES, INC.10.5K$46.4KNew
Wealthfront Advisers LLC10.1K$44.9KNew
Broadhurst Jeffrey B10K$44.2KNew
STEPHENS INC /AR/10K$44.2KNew
Ameritas Investment Partners, Inc.9.3K$41.1K−$6.01KAdded$6.54K
Steward Partners Investment Advisory, LLC9.16K$40.5K−$8.52KCut−$33.1K
Leonteq Securities AG9K$39.8K−$8.37KCut−$112.8K
NISA INVESTMENT ADVISORS, LLC7.69K$34K−$965Added$28.4K
State of Wyoming6.55K$29KNew
Federation des caisses Desjardins du Quebec6.18K$27.3K−$2.03KAdded$15.7K
Smartleaf Asset Management LLC6K$25.3KNew
Rockefeller Capital Management L.P.5.02K$22.2K−$3.83KAdded$142
Evelyn Partners Investment Management LLP5K$22.1K−$4.65KCut−$4.65K
Bank of New Hampshire3K$13.3K−$1.86KAdded$2.56K
JONES FINANCIAL COMPANIES LLLP2.85K$12.5K−$2.8KCut−$13.7K
Innovative Asset Advisors Group, LLC2.2K$9.72KHeld
Parallel Advisors, LLC1.87K$8.28K−$1.43KAdded$60
ROTHSCHILD INVESTMENT LLC1.7K$7.49K−$5Added$7.46K
CWM, LLC1.69K$7.49K$4.07KAdded$7.48K
Larson Financial Group LLC1.24K$5.49K−$151Added$4.62K
SIGNATUREFD, LLC1K$4.42K−$930Cut−$1.59K
ADIRONDACK TRUST CO986$4.36KNew
Sterling Capital Management LLC738$3.26K−$536Added$180
Copia Wealth Management730$3.23K−$679Cut−$679
Optiver Holding B.V.710$3.14K−$380Added$950
Wilmington Savings Fund Society, FSB629$2.78KNew
GAMMA Investing LLC546$2.41K−$239Added$1.04K
PNC Financial Services Group, Inc.540$2.39K−$87Added$1.89K
Golden State Equity Partners436$1.93KNew
Canal Insurance CO100K$442−$93Cut−$93
SG Americas Securities, LLC98K$433New
FNY Investment Advisers, LLC86.6K$382−$80Cut−$73
PRICE T ROWE ASSOCIATES INC /MD/80.6K$357−$46Added$94
US BANCORP \DE\60$265New
Virtu Financial LLC50.5K$223New
ISLAY CAPITAL MANAGEMENT, LLC39$172−$37Cut−$37
MAI Capital Management28$124New
Root Financial Partners, LLC26$115New
Cambridge Investment Research Advisors, Inc.21.5K$95New
EverSource Wealth Advisors, LLC11$49New
MassMutual Private Wealth & Trust, FSB10$44−$10Cut−$47
TrinityBridge Ltd7.5K$33−$7Cut−$7
Hanson & Doremus Investment Management2K$9−$1Added$4

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.