Hindsight Markets Recaps Small-cap stocks on September 18, 2026
XRTX, September 18: an 8:05 a.m. headline, a run through $2.00 and a big bid at $1.91
XRTX opened up 17% after a 6-K, ran to $2.65, then gave back most of the run by the close.
News via Stock News API
What happened
A quiet headline
The 8:05 a.m. news did not move it much. It was a planned FDA filing for its gout program. It opened at $1.95, above a $1.66 previous close.
Through $2.00
The real move came twenty minutes after the open. At 9:48 it pushed through $2.00 on 13K shares.
Stop It's 9:50. XRTX is at $2.06, up from a $1.95 open and a $1.66 previous close. Would you buy here?
Press play: the real Level 2, tape and chart run from 9:47 a.m. and stop at 9:50 a.m. ET for your call.
The 9:52 minute hit $2.65, the high of the day, on 296K shares. It closed that minute at $2.20.
Later pushes stopped lower, at $2.40 and $2.38. By 10:22 it was at $1.82.
The bid at $1.91
Here a big bid held the price flat. It sat at $1.91 from 10:27 and peaked at 44K shares. From 10:41 each minute closed at $1.91 or $1.92.
Stop It's 10:55. XRTX is at $1.91, where it has traded for the last 14 minutes. A large bid has been sitting at $1.91 since 10:27 and peaked at 44,150 shares. Would you buy here, with that bid under you?
Press play: the real Level 2, tape and chart run from 10:52 a.m. and stop at 10:55 a.m. ET for your call.
At 10:55:49 the bid was pulled. Only 2,592 shares traded against it. The next minute fell to $1.77.
It closed near $1.86.
What to take from it: The 44K-share bid at $1.91 was pulled, and the stock fell to $1.77 the next minute.
Replay XRTX's day
It starts at 9:35 a.m. ET with the real Level 2, time and sales and chart, from the same feed the replay plays, stops at 9:38 a.m. and asks what you would do. Or press Play on any moment in How it traded.
The details
How it traded, step by step
Gap, run, gave some back. It gapped up 17.5% to $1.95 at the open, ran from the open to the high of $2.65 in 22 minutes, then gave back 113% of that move by 4:00 p.m., trading at $1.86, still above the open.
| Time (ET) | What happened | Watch it |
|---|---|---|
| 8:05 a.m. | News (GlobeNewsWire): XORTX Announces Planned FDA IND Submission for XRx-026 Gout Program Using XORLO™, Targeting USD$700M+ U.S. Gout Market Opportunity | |
| 8:05 a.m. | SEC filing 6-K: FORM 6-K | |
| 9:29 a.m. | Pre-market high, $1.96 | |
| 9:30 a.m. | First trade 20% above the previous close of $1.66 | |
| 9:30 a.m. | The open: $1.95, up 17.5% from the previous close | |
| 9:52 a.m. | High of the day to the close, $2.65 | |
| 10:10 a.m. | Volume since 4:00 a.m. passes the whole float, 1.77 million shares | |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $1.86, 29.8% 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
- $1.66
- Open, 9:30 a.m.
- $1.95
- Gap at the open
- +17.5%
- Pre-market high
- $1.96 at 9:29 a.m.
- High, 4 a.m. to 4 p.m.
- $2.65 at 9:52 a.m.
- Low, 4 a.m. to 4 p.m.
- $1.58
- Close, 4 p.m.
- $1.86
- Change at 4 p.m.
- +12.0%
- After-hours high, 4 p.m. to 8 p.m.
- $1.99 at 5:55 p.m.
- Volume, 4 a.m. to 4 p.m.
- 2.56 million
- Volume after hours, 4 p.m. to 8 p.m.
- 54,736
- Relative volume by 8 p.m.
- 15.8×
- Float
- 1.77 million shares, from filings as of September 18, 2026
- Shares outstanding
- 1.82 million
- From news to the move: the first trade 20% above the previous close came 1 hour 24 minutes after the latest SEC filing before it (6-K, 8:05 a.m.).
- Volume, from the one-minute bars: 199,189 shares before the 9:30 a.m. open (8%), 1.14 million in the first 30 minutes (43%), and 1.28 million in the rest of the day to 8 p.m. (49%).
- Float rotation, the volume since 4 a.m. against the float of 1.77 million shares: past it once at 10:10 a.m.
- 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 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 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 18, 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.