Hindsight Markets Recaps Small-cap stocks on October 21, 2026
ATGL, October 21: a pre-market spike to $9.32
ATGL spiked to $9.32 before the open, then gave much of it back in the session.
What happened
Before the open
We found no news or filing before the move. Before the bell it reached $9.32, on 341K shares.
The open
It opened near its previous close, at $7.29.
The close
It closed at $7.68, 18% under its high.
What to take from it: The move happened before the bell. The regular session never got back to the pre-market high.
The details
How it traded, step by step
Pre-market spike. Before the open it spiked 34.6% from $6.93 to $9.32 at 4:00 a.m.. It opened up 5.2% at $7.29 and traded at $7.68 at 4:00 p.m.
| Time (ET) | What happened |
|---|---|
| 4:00 a.m. | First trade 20% above the previous close of $6.93 |
| 4:00 a.m. | Pre-market high, $9.32 |
| 4:00 a.m. | High of the day to the close, $9.32 |
| 9:30 a.m. | The open: $7.29, up 5.2% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $7.68, 17.6% below the high |
The shape's name comes from a fixed rule, not a judgement (how shapes are named). Halts are in the halt table below.
The day in numbers
- Previous close
- $6.93
- Open, 9:30 a.m.
- $7.29
- Gap at the open
- +5.2%
- Pre-market high
- $9.32 at 4:00 a.m.
- High, 4 a.m. to 4 p.m.
- $9.32 at 4:00 a.m.
- Low, 4 a.m. to 4 p.m.
- $6.22
- Close, 4 p.m.
- $7.68
- Change at 4 p.m.
- +10.8%
- After-hours high, 4 p.m. to 8 p.m.
- $8.14 at 4:22 p.m.
- Volume, 4 a.m. to 4 p.m.
- 468,483
- Volume after hours, 4 p.m. to 8 p.m.
- 29,036
- Relative volume by 8 p.m.
- 9.8×
- Float
- 2.67 million shares, from filings as of October 21, 2026
- Shares outstanding
- 16.46 million
- Volume, from the one-minute bars: 340,996 shares before the 9:30 a.m. open (69%), 46,234 in the first 30 minutes (9%), and 110,289 in the rest of the day to 8 p.m. (22%).
- Other days ATGL met the small-cap rule in our recaps: 2, the latest on October 20, 2026.
On the day's lists: the gainers, intraday runners. It is here because it met the small-cap rule on the gainers: price $2 to $20, up 10% or more, relative volume 5× or more, float under 20 million shares, its high reached $1 or more and it started the day at $20 or under (the rule every page uses).
Halts (none)
The exchange's halt feed shows no halts for ATGL that day.
Halt bands that day: the LULD plan's Amendment 18 rules (what that means, LULD calculator).
How we read the data, name a day's shape and pick the stocks: methodology.
Trade this day
Replay ATGL on October 21, 2026 in Hindsight Markets: the real tape, the order book and the halts, on a clock you control, and see where your orders would have filled.