Hindsight Markets Recaps Small-cap stocks on October 9, 2026
QSI, October 9: news and $1.66
QSI opened near its previous close after news, then ran to $1.66 during the session.
News via Stock News API
What happened
Before the open
The news came first: news at 4:05 p.m. the day before. Before the bell it reached $1.27, on 19K shares.
The open
It opened near its previous close, at $1.25. It ran to $1.66 by 1:48 p.m.
The close
It closed at $1.52, 8% under its high.
What to take from it: The move came during the session, not at the open.
The details
How it traded, step by step
Intraday run. It opened up 2.5% at $1.25, then ran from the open to the high of $1.66 in 258 minutes.
| Time (ET) | What happened |
|---|---|
| Oct 8, 4:05 p.m. | News (GlobeNewsWire): Quantum-Si Demonstrates Detection of 19 Amino Acids in Proteus™ Development Program |
| 9:29 a.m. | Pre-market high, $1.27 |
| 9:30 a.m. | The open: $1.25, up 2.5% from the previous close |
| 10:03 a.m. | First trade 20% above the previous close of $1.22 |
| 1:48 p.m. | High of the day to the close, $1.66 |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $1.52, 8.4% 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
- $1.22
- Open, 9:30 a.m.
- $1.25
- Gap at the open
- +2.5%
- Pre-market high
- $1.27 at 9:29 a.m.
- High, 4 a.m. to 4 p.m.
- $1.66 at 1:48 p.m.
- Low, 4 a.m. to 4 p.m.
- $1.21
- Close, 4 p.m.
- $1.52
- Change at 4 p.m.
- +24.6%
- After-hours high, 4 p.m. to 8 p.m.
- $1.55 at 7:55 p.m.
- Volume, 4 a.m. to 4 p.m.
- 13.92 million
- Volume after hours, 4 p.m. to 8 p.m.
- 309,120
- Relative volume by 8 p.m.
- 6.1×
- Float
- not available
- Shares outstanding
- not available
- From news to the move: the first trade 20% above the previous close came 17 hours 58 minutes after the latest news item before it (GlobeNewsWire, Oct 8, 4:05 p.m.).
- Volume, from the one-minute bars: 18,918 shares before the 9:30 a.m. open (0%), 1.18 million in the first 30 minutes (8%), and 13.02 million in the rest of the day to 8 p.m. (92%).
- Other days QSI met the small-cap rule in our recaps: 2, the latest on October 1, 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 QSI 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 QSI on October 9, 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.