Hindsight Markets Recaps Small-cap stocks on October 22, 2026
KRRO, October 22: an 8-K and $12.14
KRRO opened near its previous close after an 8-K, then ran to $12.14 during the session.
News via Stock News API
What happened
Before the open
The news came first: an 8-K at 7:04 a.m. Before the bell it reached $9.75, on 711 shares.
The open
It opened near its previous close, at $9.62. It ran to $12.14 by 3:50 p.m.
The close
It closed at $12.05, near 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 3.6% at $9.62, then ran from the open to the high of $12.14 in 380 minutes.
| Time (ET) | What happened |
|---|---|
| 7:00 a.m. | News (GlobeNewsWire): Korro Reports Best-in-Class Preclinical Data for KRRO-111 Demonstrating Potential to Benefit Lung and Liver Manifestations of Alpha-1 Antitrypsin Deficiency |
| 7:04 a.m. | SEC filing 8-K: 8-K |
| 8:33 a.m. | Pre-market high, $9.75 |
| 9:30 a.m. | The open: $9.62, up 3.6% from the previous close |
| 12:16 p.m. | First trade 20% above the previous close of $9.29 |
| 3:50 p.m. | High of the day to the close, $12.14 |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $12.05, 0.7% 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
- $9.29
- Open, 9:30 a.m.
- $9.62
- Gap at the open
- +3.6%
- Pre-market high
- $9.75 at 8:33 a.m.
- High, 4 a.m. to 4 p.m.
- $12.14 at 3:50 p.m.
- Low, 4 a.m. to 4 p.m.
- $9.12
- Close, 4 p.m.
- $12.05
- Change at 4 p.m.
- +29.7%
- After-hours high, 4 p.m. to 8 p.m.
- $12.90 at 7:26 p.m.
- Volume, 4 a.m. to 4 p.m.
- 265,697
- Volume after hours, 4 p.m. to 8 p.m.
- 18,824
- Relative volume by 8 p.m.
- 2.7×
- Float
- 13.58 million shares, from filings as of October 22, 2026
- Shares outstanding
- 13.73 million
- From news to the move: the first trade 20% above the previous close came 5 hours 11 minutes after the latest SEC filing before it (8-K, 7:04 a.m.).
- Volume, from the one-minute bars: 711 shares before the 9:30 a.m. open (0%), 1,856 in the first 30 minutes (1%), and 281,954 in the rest of the day to 8 p.m. (99%).
- In our recaps, this is the only day KRRO 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 KRRO 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 KRRO on October 22, 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.