Ticker · CUSIP 02155X205
Holders (tracked)
1
Combined shares
16,811
Combined value
$51.8K
Last close
$4.47
Quarter
2025Q4
Price · 1Y$4.47+0.97 (+27.71%)H $6.55 · L $2.92 · Avg Vol 56K
Tracked holders · last 8 quarters
Flat over the last 7 quarters.
Price is +45.1% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
2 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−5,333 shares · 2025Q4Position
- Steve Cohen (Point72) exited2025-11-14−131,431 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ATHE…
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 |
|---|---|---|---|---|
| Ken Griffin (Citadel Advisors) | 2024Q1 | $2.88 | +55.3% | $75K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q1 | 1 | $37K |
| 2024Q3 | 1 | $15K |
| 2024Q4 | 1 | $108K |
| 2025Q1 | 1 | $453K |
| 2025Q2 | 1 | $537K |
| 2025Q3 | 1 | $83K |
| 2025Q4 | 1 | $52K |
Who owns ATHE
1 super-investors · 2025Q4
Tracked stake
16.8K
shares
Combined value
$52K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 16.8K | $52K |
Recent moves
4 transactions
- −5,333 · 2025Q4
- −131,431 · 2025Q3
- +98,804 · 2025Q1
- +32,627 · 2024Q4
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