Ticker · CUSIP 02156U200
Holders (tracked)
1
Combined shares
42,847
Combined value
$29.8K
Last close
$0.71
Quarter
2025Q4
Price · 1Y$0.71-0.98 (-58.05%)H $2.18 · L $0.54 · Avg Vol 115K
Position opened
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
Price is +2.3% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
3 events
- Ken Griffin (Citadel Advisors) exited2026-02-17−33,165 shares · 2025Q4Position
- Renaissance Technologies added2026-02-12+11,300 shares · 2025Q4Position
- Renaissance Technologies added2025-11-13+14,200 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ATER…
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 |
|---|---|---|---|---|
| Renaissance Technologies | 2024Q3 | $1.60 | -55.6% | $30K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to1
- Renaissance Technologies+11,300$8K
Trimmed0
—
Exited1
- Ken Griffin (Citadel Advisors)−33,165$35K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q1 | 1 | $241K |
| 2024Q2 | 5 | $416K |
| 2024Q3 | 5 | $220K |
| 2024Q4 | 5 | $211K |
| 2025Q1 | 3 | $143K |
| 2025Q2 | 2 | $46K |
| 2025Q3 | 2 | $68K |
| 2025Q4 | 1 | $30K |
Who owns ATER
1 super-investors · 2025Q4
Tracked stake
42.8K
shares
Combined value
$30K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 42.8K | $30K |
Recent moves
13 transactions
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