Hindsight Markets Recaps Small-cap stocks on September 11, 2026
XRTX, September 11: news and a pre-market spike to $2.78
XRTX spiked to $2.78 before the open after news, then gave much of it back in 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 $2.78, on 643K shares.
The open
It opened near its previous close, at $2.35.
The close
It closed at $2.31, 17% under its high.
What to take from it: The move happened before the bell. The regular session never got back to the pre-market high.
The details
How it traded, step by step
Pre-market spike. Before the open it spiked 27.5% from $2.18 to $2.78 at 4:01 a.m.. It opened up 7.8% at $2.35 and traded at $2.31 at 4:00 p.m.
| Time (ET) | What happened |
|---|---|
| Sep 10, 4:05 p.m. | News (GlobeNewsWire): XORTX Announces Initiation of Clinical and Commercial Manufacturing of XORLO™ |
| 4:00 a.m. | First trade 20% above the previous close of $2.18 |
| 4:01 a.m. | Pre-market high, $2.78 |
| 4:01 a.m. | High of the day to the close, $2.78 |
| 9:30 a.m. | The open: $2.35, up 7.8% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $2.31, 16.9% 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
- $2.18
- Open, 9:30 a.m.
- $2.35
- Gap at the open
- +7.8%
- Pre-market high
- $2.78 at 4:01 a.m.
- High, 4 a.m. to 4 p.m.
- $2.78 at 4:01 a.m.
- Low, 4 a.m. to 4 p.m.
- $2.14
- Close, 4 p.m.
- $2.31
- Change at 4 p.m.
- +6.0%
- After-hours high, 4 p.m. to 8 p.m.
- $2.35 at 4:35 p.m.
- Volume, 4 a.m. to 4 p.m.
- 938,617
- Volume after hours, 4 p.m. to 8 p.m.
- 57,034
- Relative volume by 8 p.m.
- 21.6×
- Float
- 1.77 million shares, from filings as of September 11, 2026
- Shares outstanding
- 1.82 million
- From news to the move: the first trade 20% above the previous close came 11 hours 55 minutes after the latest news item before it (GlobeNewsWire, Sep 10, 4:05 p.m.).
- Volume, from the one-minute bars: 643,214 shares before the 9:30 a.m. open (65%), 95,516 in the first 30 minutes (10%), and 256,921 in the rest of the day to 8 p.m. (26%).
- Other days XRTX met the small-cap rule in our recaps: 5, the latest on October 9, 2026.
On the day's lists: the intraday runners. It is here because it met the small-cap rule on the intraday runners: price $2 to $20, up 10% or more, relative volume 5× or more, float under 20 million shares, 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 XRTX 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 XRTX on September 11, 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.