Watch ATNM. Know when insiders buy.
One email the day a filing lands. Free.
A free account adds a watchlist, alerts when insiders, Congress or short sellers move on your tickers, and a morning brief. Sign up
| Report date | Shares short | Change | % of shares out | Avg daily volume | Days to cover |
|---|---|---|---|---|---|
| 2026-08-14 | 769K | −18K | 2.44% | 224K | 3.4 |
| 2026-07-31 | 787K | −33K | 2.50% | 76K | 10.3 |
| 2026-07-15 | 820K | −117K | 2.61% | 95K | 8.6 |