Hindsight Markets Recaps Small-cap stocks on October 21, 2026
YMAT, October 21: a run to $2.75
YMAT opened up 19%, ran to $2.74, then fell below its open by the close.
What happened
Before the open
We found no news or filing before the move. Before the bell it reached $2.75, on 1.9M shares.
The open
It opened up 19%, at $2.40. It ran to $2.74 by 10:57 a.m.
The close
It closed at $2.25, 18% under its high.
What to take from it: The whole move was given back: it finished below the price it opened at.
The details
How it traded, step by step
Gap, run and fade. It gapped up 19.4% to $2.40 at the open, ran from the open to the high of $2.74 in 87 minutes, then gave back 144% of that move by 4:00 p.m., trading at $2.25, below the open.
| Time (ET) | What happened |
|---|---|
| 7:18 a.m. | First trade 20% above the previous close of $2.01 |
| 7:19 a.m. | Pre-market high, $2.75 |
| 7:19 a.m. | High of the day to the close, $2.75 |
| 9:30 a.m. | The open: $2.40, up 19.4% from the previous close |
| 10:35 a.m. | Volume since 4:00 a.m. passes the whole float, 2.70 million shares |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $2.25, 18.2% 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
- $2.01
- Open, 9:30 a.m.
- $2.40
- Gap at the open
- +19.4%
- Pre-market high
- $2.75 at 7:19 a.m.
- High, 4 a.m. to 4 p.m.
- $2.75 at 7:19 a.m.
- Low, 4 a.m. to 4 p.m.
- $2.01
- Close, 4 p.m.
- $2.25
- Change at 4 p.m.
- +11.9%
- After-hours high, 4 p.m. to 8 p.m.
- $2.30 at 7:27 p.m.
- Volume, 4 a.m. to 4 p.m.
- 4.29 million
- Volume after hours, 4 p.m. to 8 p.m.
- 135,429
- Relative volume by 8 p.m.
- 0.7×
- Float
- 2.70 million shares, from filings as of October 21, 2026
- Shares outstanding
- 4.01 million
- Volume, from the one-minute bars: 1.95 million shares before the 9:30 a.m. open (44%), 323,049 in the first 30 minutes (7%), and 2.15 million in the rest of the day to 8 p.m. (49%).
- Float rotation, the volume since 4 a.m. against the float of 2.70 million shares: past it once at 10:35 a.m.
- Other days YMAT met the small-cap rule in our recaps: 9, the latest on October 26, 2026.
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 YMAT 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 YMAT 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.