Hindsight Markets Small-cap stocks on September 8, 2026
ATER on September 8, 2026: why it ran
On September 8, 2026, ATER opened up 6.1% from the previous close of 0.6259 and reached 1.02 at 9:49 a.m. ET. The exchange did not halt it.
- Previous close
- 0.6259
- Open, 9:30 a.m.
- 0.6642
- Gap at the open
- up 6.1%
- Pre-market high
- 0.6778 at 9:27 a.m.
- High, 4 a.m. to 4 p.m.
- 1.02 at 9:49 a.m.
- Low, 4 a.m. to 4 p.m.
- 0.6300
- After-hours high, 4 p.m. to 8 p.m.
- 0.8200 at 4:39 p.m.
- Last trade before 4:00 p.m.
- 0.7177
- Volume
- 13.39 million
- Relative volume
- 16.2x
- Float
- 17.97 million shares, from filings as of September 8, 2026
- Shares outstanding
- 17.97 million
- Halts
- none in the halt feed
Why it ran
News and SEC filings for ATER published between the previous session's close and the first minute ATER traded 20% above it, at 9:41 a.m. ET, newest first, from the same feeds the replay shows.
No news found before the move.
How it traded
Intraday run. It opened up 6.1% at 0.6642, then ran from the open to the high of 1.02 in 19 minutes.
| Time (ET) | What happened |
|---|---|
| 9:27 a.m. | Pre-market high, 0.6778 |
| 9:30 a.m. | The open: 0.6642, up 6.1% from the previous close |
| 9:41 a.m. | First trade 20% above the previous close of 0.6259 |
| 9:49 a.m. | High of the day to the close, 1.02 |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, 0.7177, 29.6% below the high |
The shape is a fixed rule, not a judgement: gapped 10% or more at the open, ran 10% or more from the open to the high, and faded if it gave back 30% or more of that move by the close.
The day in numbers
- Volume, from the one-minute bars: 178,079 shares before the 9:30 a.m. open (1%), 9.15 million in the first 30 minutes (68%), and 4.07 million in the rest of the day to 8 p.m. (30%).
Halts
The exchange's halt feed shows no halts for ATER that day.
On this date the LULD plan ran under Amendment 18, in force from February 24, 2020: no band doubling at the open, and the closing doubling only for Tier 1 stocks and Tier 2 stocks whose previous close was at or below three dollars. See LULD halts or work out a band with the LULD calculator.
Trade this day
Replay ATER on September 8, 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.