Vault-13

ASP ISOTOPES INC ASPI

COM · Common Stock · CUSIP 00218A105 · ISIN US00218A1051

70 institutional holders +18 vs Q2 2024
22,418,52022.4m shares reported held*
31.4% of all shares outstanding*
$62.5mreported value*
24 new 32 added 7 reduced 7 sold out net bought ≈ $36.3m (+13.0m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 71.4m as of 2024-11-13, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $2.79.

Trends to Q3 2024

Institutional holders

Managers reporting a position, each quarter

0255075Q4 22: 4Q1 23: 7Q2 23: 5Q3 23: 12Q4 23: 20Q1 24: 32Q2 24: 52Q3 24: 7070Q4 22Q2 23Q4 23Q2 24Q3 24
Numbers
QuarterHolders
Q4 20224
Q1 20237
Q2 20235
Q3 202312
Q4 202320
Q1 202432
Q2 202452
Q3 202470

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q1 23: 4 bought or addedQ1 23: 1 cut or sold outQ1 23Q2 23: 4 bought or addedQ2 23: 5 cut or sold outQ3 23: 8 bought or addedQ3 23: 4 cut or sold outQ3 23Q4 23: 15 bought or addedQ4 23: 5 cut or sold outQ1 24: 28 bought or addedQ1 24: 7 cut or sold outQ1 24Q2 24: 41 bought or addedQ2 24: 20 cut or sold outQ3 24: 56 bought or addedQ3 24: 14 cut or sold outQ3 24
Numbers
QuarterBought or addedCut or sold out
Q1 202341
Q2 202345
Q3 202384
Q4 2023155
Q1 2024287
Q2 20244120
Q3 20245614

Biggest buyers

AWM Investment Company, Inc. New +3,659,586+3.7m
BNP PARIBAS ASSET MANAGEMENT Holding S.A. New +2,247,826+2.2m
Telemark Asset Management, LLC New +1,700,000+1.7m
VANGUARD GROUP INC Added +1,071,637+1.1m
Alyeska Investment Group, L.P. New +747,022+747.0k
Philadelphia Financial Management of San Francisco, LLC Added +607,893+607.9k
MARSHALL WACE, LLP Added +455,642+455.6k
GSA CAPITAL PARTNERS LLP Added +377,721+377.7k
GEODE CAPITAL MANAGEMENT, LLC Added +334,836+334.8k
NORTHERN TRUST CORP Added +304,167+304.2k

Biggest sellers

RENAISSANCE TECHNOLOGIES LLC Sold out -171,800-171.8k
HTLF Bank Reduced -56,769-56.8k
Virtu Financial LLC Reduced -54,214-54.2k
Qube Research & Technologies Ltd Sold out -42,102-42.1k
Jump Financial, LLC Sold out -34,000-34.0k
Centiva Capital, LP Sold out -33,171-33.2k
NEW YORK STATE COMMON RETIREMENT FUND Reduced -31,100-31.1k
OMERS ADMINISTRATION Corp Sold out -18,000-18.0k
SVB WEALTH LLC Sold out -11,000-11.0k
OSAIC HOLDINGS, INC. Reduced -3,200-3.2k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Mann Paul Elliot 13G · exempt (held before listing) -3.8 pts · filed 2026-02-17 7.0% -3.8 pts 7.8m≈ $48.3m 2026-02-17
BlackRock, Inc. 13G · institution +1.1 pts · filed 2026-04-27 6.6% +1.1 pts 8.3m≈ $51.5m 2026-04-27
AWM Investment Company, Inc. 13G · institution -1.1 pts · filed 2026-02-13 5.8% -1.1 pts 619.6k≈ $3.9m 2026-02-13
AK Jensen Investment Management Ltd 13G · institution -1.2 pts · filed 2025-11-14 5.4% -1.2 pts 5.0m≈ $30.8m 2025-11-14
Encompass Capital Advisors LLC 13G · passive investor new · filed 2026-01-23 5.1% new 6.4m≈ $39.9m 2026-01-23

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26), BNP Paribas Asset Management UK Ltd (0.9%, 2026-02-09)

Insider purchases and sales in Q3 2024

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 22: 0 buyingQ4 22: 0 sellingQ1 23: 0 buyingQ1 23: 0 sellingQ1 23Q2 23: 1 buyingQ2 23: 0 sellingQ3 23: 0 buyingQ3 23: 0 sellingQ3 23Q4 23: 3 buyingQ4 23: 0 sellingQ1 24: 1 buyingQ1 24: 0 sellingQ1 24Q2 24: 1 buyingQ2 24: 0 sellingQ3 24: 2 buyingQ3 24: 0 sellingQ3 24
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20220—0——
Q1 20230—0——
Q2 20231$81.2k0——
Q3 20230—0——
Q4 20233$191.1k0——
Q1 20241$42.0k0——
Q2 20241$119.4k0——
Q3 20242—0——
DateInsiderTradeSharesPrice ValueTheir holding
2024-08-02 AK Jensen Investment Management Ltd 10% owner · See footnote Sold 80,000 $2.23 $178.4k80.0k shares -1%
2024-08-01 AK Jensen Investment Management Ltd 10% owner · See footnote Sold 31,849 $2.45 $78.0k31.8k shares -0%
2024-07-15 Mann Paul Elliot Chief Executive Officer Bought 39,984 — —40.0k shares +1%
2024-07-15 Ainscow Robert Chief Operating Officer Bought 19,992 — —20.0k shares +2%
2024-07-10 AK Jensen Investment Management Ltd 10% owner · See footnote Bought 61,849 $3.40 $210.3k61.8k shares +1%
2024-07-09 AK Jensen Investment Management Ltd 10% owner · See footnote Bought 30,000 $3.05 $91.5k30.0k shares +0%
2024-07-08 AK Jensen Investment Management Ltd 10% owner · See footnote Bought 70,000 $3.05 $213.5k70.0k shares +1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 AWM Investment Company, Inc. 1.23% of their portfolio NEW YORK, NY 3,659,5863.7m $10.2m $10.2m 1.23% New
2 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,820,7572.8m $7.8m $7.8m 0.00% Added +1.1m +1,071,637
3 BlackRock, Inc. 0.00% of their portfolio New York, NY 2,702,6292.7m $7.5m $7.5m 0.00% First filing
4 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.02% of their portfolio Paris, I0 2,247,8262.2m $6.2m $6.2m 0.02% New
5 Telemark Asset Management, LLC 0.48% of their portfolio BOSTON, MA 1,700,0001.7m $4.7m $4.7m 0.48% New
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,118,4231.1m $3.1m $3.1m 0.00% Added +334.8k +334,836
7 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 1,000,7141.0m $2.8m $2.8m 0.00% Added +455.6k +455,642
8 Philadelphia Financial Management of San Francisco, LLC 0.59% of their portfolio SAN FRANCISCO, CA 991,863991.9k $2.8m $2.8m 0.59% Added +607.9k +607,893
9 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 853,695853.7k $2.4m $2.4m 0.00% Added +96.6k +96,604
10 GSA CAPITAL PARTNERS LLP 0.16% of their portfolio LONDON, X0 770,989771.0k $2.1m $2.1m 0.16% Added +377.7k +377,721
11 Alyeska Investment Group, L.P. 0.01% of their portfolio CHICAGO, IL 747,022747.0k $2.1m $2.1m 0.01% New
12 Rovida Advisors Inc. 0.35% of their portfolio Fort Lauderdale, FL 400,000400.0k $1.1m $1.1m 0.35% Added +50.0k +50,000
13 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 377,163377.2k $1.0m $1.0m 0.00% Added +304.2k +304,167
14 Diametric Capital, LP 0.40% of their portfolio BOSTON, MA 291,969292.0k $811.7k $811.7k 0.40% New
15 MMCAP International Inc. SPC 0.11% of their portfolio GRAND CAYMAN, E9 273,143273.1k $759.3k $759.3k 0.11% New
16 Fiera Capital Corp 0.00% of their portfolio MONTREAL, A8 260,000260.0k $722.8k $722.8k 0.00% New
17 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 238,660238.7k $663.5k $663.5k 0.00% Added +107.9k +107,943
18 Rathbones Group PLC 0.00% of their portfolio Liverpool, X0 205,855205.9k $572.3k $572.3k 0.00% Added +9.9k +9,940
19 Walleye Capital LLC 0.01% of their portfolio NEW YORK, NY 192,664192.7k $535.6k $535.6k 0.01% New
20 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 145,969146.0k $405.8k $405.8k 0.00% Added +35.2k +35,166
21 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 134,386134.4k $373.6k $373.6k 0.00% Added +10.0k +9,960
22 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 120,278120.3k $334.4k $334.4k 0.00% Added +17.2k +17,159
23 PRELUDE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio NEW YORK, NY 106,328106.3k $295.6k $295.6k 0.02% New
24 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 84,70584.7k $235.5k $235.5k 0.00% Added +71.3k +71,324
25 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 72,33072.3k $201.1k $201.1k 0.00% Added +58.9k +58,897
26 UBS Group AG 0.00% of their portfolio ZURICH, V8 63,71963.7k $177.1k $177.1k 0.00% Added +11.7k +11,729
27 CORSAIR CAPITAL MANAGEMENT, L.P. 0.04% of their portfolio NEW YORK, NY 56,73256.7k $157.7k $157.7k 0.04% New
28 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 53,53553.5k $148.8k $148.8k 0.00% Unchanged
29 HTLF Bank 0.01% of their portfolio Denver, CO 48,76948.8k $135.6k $135.6k 0.01% Reduced -56.8k -56,769
30 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 44,39244.4k $123.4k $123.4k 0.00% Added +10.6k +10,614
31 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 36,41536.4k $101.2k $101.2k 0.00% Added +27.8k +27,793
32 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 36,40036.4k $101.2k $101.2k 0.00% New
33 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 35,69935.7k $99.2k $99.2k 0.00% Reduced -2.4k -2,357
34 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 32,61532.6k $90.7k $90.7k 0.00% New
35 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 32,05432.1k $89.1k $89.1k 0.00% New
36 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 31,82231.8k $88.5k $88.5k 0.00% New
37 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 29,53029.5k $82.1k $82.1k 0.00% Added +12.8k +12,850
38 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 27,00927.0k $75.1k $75.1k 0.00% Added +8.1k +8,085
39 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 26,99027.0k $75.0k $75.0k 0.00% Added +5.7k +5,670
40 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 26,82426.8k $74.6k $74.6k 0.00% Added +1.4k +1,350
41 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 25,73725.7k $71.5k $71.5k 0.00% Added +14.8k +14,814
42 Sanctuary Advisors, LLC 0.00% of their portfolio INDIANAPOLIS, IN 23,64223.6k $197.2k $197.2k 0.00% New
43 KKM Financial LLC 0.03% of their portfolio CHICAGO, IL 22,60022.6k $62.8k $62.8k 0.03% Added +9.0k +9,000
44 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 21,65421.7k $60.2k $60.2k 0.00% New
45 Snowden Capital Advisors LLC 0.00% of their portfolio New York, NY 20,00020.0k $55.6k $55.6k 0.00% Reduced -3.0k -3,000
46 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 19,34319.3k $53.8k $53.8k 0.00% Added +217 +217
47 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 18,88918.9k $53.0k $53.0k 0.00% Added +6.1k +6,077
48 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 18,56318.6k $51.6k $51.6k 0.00% New
49 Fielder Capital Group LLC 0.02% of their portfolio NASHVILLE, TN 18,05518.1k $50.2k $50.2k 0.02% Unchanged
50 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 16,40016.4k $45.6k $45.6k 0.00% Reduced -3.2k -3,200
51 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 15,54715.5k $43.2k $43.2k 0.00% Added +2.9k +2,859
52 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 15,11815.1k $42.0k $42.0k 0.00% Added +1.1k +1,138
53 B. Riley Wealth Advisors, Inc. 0.00% of their portfolio MEMPHIS, TN 15,00915.0k $41.7k $41.7k 0.00% New
54 Leonteq Securities AG 0.00% of their portfolio ZURICH, V8 13,33913.3k $37.1k $37.1k 0.00% New
55 Virtu Financial LLC 0.00% of their portfolio New York, NY 11,69311.7k $33.0k $33.0k 0.00% Reduced -54.2k -54,214
56 FMR LLC 0.00% of their portfolio BOSTON, MA 7,6017.6k $21.1k $21.1k 0.00% Added +7.1k +7,101
57 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 6,5396.5k $18.2k $18.2k 0.00% New
58 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 6,5106.5k $18.0k $18.0k 0.00% Added +2.8k +2,782
59 Legal & General Group Plc 0.00% of their portfolio London, X0 6,0806.1k $16.9k $16.9k 0.00% Added +1.7k +1,692
60 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 3,8833.9k $10.8k $10.8k 0.00% Unchanged
61 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,8283.8k $10.6k $10.6k 0.00% New
62 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 3,7653.8k $10.5k $10.5k 0.00% Added +893 +893
63 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 1,8001.8k $5.0k $5.0k 0.00% Reduced -31.1k -31,100
64 VitalStone Financial, LLC 0.00% of their portfolio SHAVANO PARK, TX 1,5601.6k $4.3k $4.3k 0.00% New
65 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 1,3711.4k $4.0k $4.0k 0.00% Unchanged
66 Householder Group Estate & Retirement Specialist, LLC 0.00% of their portfolio SCOTTSDALE, AZ 300300 $0 $0 0.00% New
67 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 138138 $384 $384 0.00% New
68 CWM, LLC 0.00% of their portfolio OMAHA, NE 5656 $0 $0 0.00% Reduced -249 -249
69 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 4141 $114 $114 0.00% First filing
70 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged