Hindsight Markets Small-cap stocks on September 28, 2026
YMT on September 28, 2026: why it ran
On September 28, 2026, YMT opened down 1.1% from the previous close of 1.81 and reached 1.81 at 4:00 a.m. ET. The exchange did not halt it.
- Previous close
- 1.81
- Open, 9:30 a.m.
- 1.79
- Gap at the open
- down 1.1%
- Pre-market high
- 1.81 at 4:00 a.m.
- High, 4 a.m. to 4 p.m.
- 1.81 at 4:00 a.m.
- Low, 4 a.m. to 4 p.m.
- 1.72
- After-hours high, 4 p.m. to 8 p.m.
- 3.68 at 4:42 p.m.
- Last trade before 4:00 p.m.
- 1.75
- Volume
- 9.62 million
- Relative volume
- 103.7x
- Float
- not available
- Shares outstanding
- not available
- Halts
- none in the halt feed
Why it ran
News and SEC filings for YMT published between the previous session's close and the first minute YMT traded 20% above it, at 4:04 p.m. ET, newest first, from the same feeds the replay shows.
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REPORT OF FOREIGN PRIVATE ISSUER
How it traded
| Time (ET) | What happened |
|---|---|
| 4:00 a.m. | Pre-market high, 1.81 |
| 4:00 a.m. | High of the day to the close, 1.81 |
| 9:30 a.m. | The open: 1.79, down 1.1% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, 1.75, 3.3% below the high |
| 4:01 p.m. | SEC filing 6-K: REPORT OF FOREIGN PRIVATE ISSUER |
| 4:04 p.m. | First trade 20% above the previous close of 1.81 |
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
- From news to the move: the first trade 20% above the previous close came 2 minutes after the latest SEC filing before it (6-K, 4:01 p.m.).
- Volume, from the one-minute bars: 4,569 shares before the 9:30 a.m. open (0%), 9,846 in the first 30 minutes (0%), and 9.60 million in the rest of the day to 8 p.m. (100%).
- Other days YMT met the small-cap rule in our recaps: 2, the latest on September 29, 2026.
- The next session, September 29, 2026, it gapped up 21.5% at 9:30 a.m.
Halts
The exchange's halt feed shows no halts for YMT 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 YMT on September 28, 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.