Ticker · CUSIP 00218A105
Holders (tracked)
9
Combined shares
5,666,563
Combined value
$30.32M
Last close
$5.37
Quarter
2025Q4
Price · 1Y$5.37-0.47 (-8.05%)H $14.05 · L $4.07 · Avg Vol 5.5M
Position opened
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
Price is +0.4% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
16 events
- Ken Griffin (Citadel Advisors) added2026-02-17+559,788 shares · 2025Q4Position
- D.E. Shaw & Co. opened position2026-02-17+54,037 shares · 2025Q4Position
- Two Sigma Investments added2026-02-17+18,992 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) exited2026-02-17−245,985 shares · 2025Q4Position
- Steve Cohen (Point72) exited2026-02-17−23,371 shares · 2025Q4Position
- +132,936 shares · 2025Q4Position
- T. Rowe Price trimmed2026-02-17−998,714 shares · 2025Q4Position
- AQR Capital Management trimmed2026-02-17−298,666 shares · 2025Q4Position
- Renaissance Technologies exited2026-02-12−201,200 shares · 2025Q4Position
- −334,998 shares · 2025Q3Position
- Steve Cohen (Point72) opened position2025-11-14+23,371 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+213,704 shares · 2025Q3Position
- Two Sigma Investments trimmed2025-11-14−5,667 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+1,021,161 shares · 2025Q3Position
- AQR Capital Management added2025-11-14+313,987 shares · 2025Q3Position
- Renaissance Technologies opened position2025-11-13+201,200 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ASPI…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| D.E. Shaw & Co. | 2025Q4 | $5.35 | +0.4% | $290K |
| Two Sigma Investments | 2024Q4 | $5.67 | -5.2% | $1.9M |
| Paul Tudor Jones (Tudor Investment) | 2025Q1 | $5.93 | -9.4% | $714K |
| Paul Tudor Jones (Tudor Investment) | 2025Q1 | $5.93 | -9.4% | $714K |
| Ken Griffin (Citadel Advisors) | 2023Q4 | $7.52 | -28.5% | $3.4M |
| Ken Griffin (Citadel Advisors) | 2023Q4 | $7.52 | -28.5% | $3.4M |
| Ken Griffin (Citadel Advisors) | 2023Q4 | $7.52 | -28.5% | $3.4M |
| AQR Capital Management | 2024Q3 | $9.33 | -42.4% | $158K |
| T. Rowe Price | 2024Q2 | $9.44 | -43.1% | $263K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Paul Tudor Jones (Tudor Investment)+132,936$711K
- D.E. Shaw & Co.+54,037$289K
Added to2
- Ken Griffin (Citadel Advisors)+559,788$3.0M
- Two Sigma Investments+18,992$102K
Trimmed2
- AQR Capital Management−298,666$1.6M
- T. Rowe Price−998,714$5K
Exited3
- Izzy Englander (Millennium Mgmt)−245,985$2.4M
- Renaissance Technologies−201,200$1.9M
- Steve Cohen (Point72)−23,371$225K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q4 | 1 | $49K |
| 2023Q1 | 1 | $24K |
| 2023Q2 | 1 | $272K |
| 2023Q3 | 1 | $96K |
| 2023Q4 | 4 | $437K |
| 2024Q1 | 4 | $2.7M |
| 2024Q2 | 3 | $7.1M |
| 2024Q3 | 2 | $142K |
| 2024Q4 | 6 | $3.3M |
| 2025Q1 | 7 | $4.5M |
| 2025Q2 | 8 | $10.8M |
| 2025Q3 | 9 | $50.0M |
| 2025Q4 | 9 | $30.3M |
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
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 2.22M | $12M |
| 2 | Ken Griffin Citadel Advisors | 1.73M | $9M |
| 3 | Ken Griffin Citadel Advisors | 632.5K | $3M |
| 4 | Paul Tudor Jones Tudor Investment | 470.0K | $3M |
| 5 | Two Sigma Investments | 356.2K | $2M |
| 6 | Paul Tudor Jones Tudor Investment | 132.9K | $711K |
| 7 | D.E. Shaw & Co. | 54.0K | $289K |
| 8 | T. Rowe Price | 49.0K | $263K |
| 9 | AQR Capital Management | 29.4K | $157K |
Recent moves
20 transactions
- −298,666 · 2025Q4
- +54,037 · 2025Q4
- +559,788 · 2025Q4
- −23,371 · 2025Q4
- TRIMT. Rowe Price−998,714 · 2025Q4
- −245,985 · 2025Q4
- +132,936 · 2025Q4
- +18,992 · 2025Q4
- −201,200 · 2025Q4
- −334,998 · 2025Q3
- −5,667 · 2025Q3
- +23,371 · 2025Q3
- +1,021,161 · 2025Q3
- +213,704 · 2025Q3
- +313,987 · 2025Q3
- +201,200 · 2025Q3
- +3,476 · 2025Q2
- +13,968 · 2025Q2
- +184,975 · 2025Q2
- +139,845 · 2025Q2
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- ASPI insider tradingEvery Form 4 filing by ASPI officers, directors, and 10%+ holders.
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