Hindsight Markets Recaps Small-cap stocks on September 21, 2026
TOMZ, September 21: news and an after-hours run to $2.03
TOMZ barely moved in the regular session after news, then ran to $2.03 after the close.
News via Stock News API
What happened
Before the open
The news came first: news at 4:56 p.m. Before the bell it reached $1.54, on 1 shares.
The open
It opened near its previous close, at $1.54.
The close
It closed at $1.47, near its high. After the close it ran to $2.03 by 4:59 p.m.
What to take from it: The day's real move came after the 4 p.m. close, not in the regular session.
The details
How it traded, step by step
After-hours run. It opened up 5.5% at $1.54 and traded at $1.47 at the 4:00 p.m. close, then ran 38.1% from $1.47 to $2.03 at 4:59 p.m. after the close, on 1.38 million shares traded after hours.
| Time (ET) | What happened |
|---|---|
| 4:37 a.m. | Pre-market high, $1.54 |
| 4:37 a.m. | High of the day to the close, $1.54 |
| 9:30 a.m. | The open: $1.54, up 5.5% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $1.47, 4.5% below the high |
| 4:56 p.m. | News (GlobeNewsWire): TOMI Environmental Solutions Announces Mutual Termination of Merger Agreement with Carbonium Core |
| 4:59 p.m. | First trade 20% above the previous close of $1.46 |
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
- $1.46
- Open, 9:30 a.m.
- $1.54
- Gap at the open
- +5.5%
- Pre-market high
- $1.54 at 4:37 a.m.
- High, 4 a.m. to 4 p.m.
- $1.54 at 4:37 a.m.
- Low, 4 a.m. to 4 p.m.
- $1.42
- Close, 4 p.m.
- $1.47
- Change at 4 p.m.
- +0.7%
- After-hours high, 4 p.m. to 8 p.m.
- $2.03 at 4:59 p.m.
- Volume, 4 a.m. to 4 p.m.
- 13,645
- Volume after hours, 4 p.m. to 8 p.m.
- 1.38 million
- Relative volume by 8 p.m.
- n/m
- Float
- 6.53 million shares, from filings as of September 21, 2026
- Shares outstanding
- 8.14 million
- From news to the move: the first trade 20% above the previous close came 3 minutes after the latest news item before it (GlobeNewsWire, 4:56 p.m.).
- Volume, from the one-minute bars: 1 shares before the 9:30 a.m. open (0%), 1,384 in the first 30 minutes (0%), and 1.39 million in the rest of the day to 8 p.m. (100%).
- In our recaps, this is the only day TOMZ met the small-cap rule.
On the day's lists: the intraday runners. It is here because it was in play on the intraday runners: up 30% or more on $3 million or more really traded, outside the small-cap rule's price, relative volume or float, 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 TOMZ 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 TOMZ on September 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.