Ticker · CUSIP 00218A105

ASPI

ASP ISOTOPES INC
···Share
Holders (tracked)
9
Combined shares
5,666,563
Combined value
$30.05M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
942024Q12025Q4

SEC event timeline

16 events
  1. +559,788 shares · 2025Q4
    13F
  2. +54,037 shares · 2025Q4
    13F
  3. +18,992 shares · 2025Q4
    13F
  4. −245,985 shares · 2025Q4
    13F
  5. −23,371 shares · 2025Q4
    13F
  6. +132,936 shares · 2025Q4
    13F
  7. −998,714 shares · 2025Q4
    13F
  8. −298,666 shares · 2025Q4
    13F
  9. −201,200 shares · 2025Q4
    13F
  10. −334,998 shares · 2025Q3
    13F
  11. +23,371 shares · 2025Q3
    13F
  12. +213,704 shares · 2025Q3
    13F
  13. −5,667 shares · 2025Q3
    13F
  14. +1,021,161 shares · 2025Q3
    13F
  15. +313,987 shares · 2025Q3
    13F
  16. +201,200 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Added to2
Trimmed2

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q4
1
$49
2023Q1
1
$24
2023Q2
1
$272
2023Q3
1
$96
2023Q4
4
$303K
2024Q1
4
$2.0M
2024Q2
3
$7.1M
2024Q3
2
$89K
2024Q4
6
$3.2M
2025Q1
7
$4.4M
2025Q2
8
$10.7M
2025Q3
9
$39.9M
2025Q4
9
$30.1M

Who owns ASPI

9 super-investors · 2025Q4
Tracked stake
5.67M
shares
Combined value
$30M
% of shares outstanding
shares-out unknown
Quarter action mix
New3Added4Trim2
#ManagerSharesValue
1Ken Griffin
Citadel Advisors
2.22M$12M
2Ken Griffin
Citadel Advisors
1.73M$9M
3Ken Griffin
Citadel Advisors
632.5K$3M
4Paul Tudor Jones
Tudor Investment
470.0K$3M
5Two Sigma Investments356.2K$2M
6Paul Tudor Jones
Tudor Investment
132.9K$711K
7D.E. Shaw & Co.54.0K$289K
8AQR Capital Management29.4K$157K
9T. Rowe Price49.0K$263

Recent moves

20 transactions
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