Hindsight Markets Recaps Small-cap stocks on August 18, 2026
GNPX, August 18: a 7:00 headline and $7.52
GNPX opened near its previous close after an 8-K, ran to $4.83, then fell below its open by the close.
News via Stock News API
What happened
The 7:00 spike
A 7:00 a.m. press release about a manufacturing partner for its diabetes gene therapy set this day off. The stock was near $4.70. In the 7:08 minute it ran to $7.00 on 344K shares, about 44% of the 819K float.
Stop It's 7:09. GNPX is at $6.65. A minute ago it was at $4.87. The previous close was $4.47, and the stock is trading heavily. Would you buy here?
Press play: the real Level 2, tape and chart run from 7:06 a.m. and stop at 7:09 a.m. ET for your call.
That minute made the high of the day, $7.52, then closed at $5.25. Two minutes later it traded at $3.96, under the previous close.
A bid that left
The spike left fast. A 28K-share bid at $4.00 was pulled at 7:13:30. The stock opened at $4.15 and fell to $3.83 by 9:32.
The bid at $4.07
From 9:48 a.m. a big bid sat at exactly $4.07, peaking at 25K shares. The stock drifted down toward it.
Stop It's 2:51. GNPX is at $4.07. A big bid, peaking at 24,546 shares, has sat at exactly $4.07 since 9:48 a.m. Would you buy here?
Press play: the real Level 2, tape and chart run from 2:48 p.m. and stop at 2:51 p.m. ET for your call.
At 2:51:55, 6,879 shares hit it. At 2:51:56 the bid was gone, and that minute's low was $4.02. The last trade before 4:00 p.m. was $3.92, 48% under the high.
What to take from it: A big bid can vanish the moment the price reaches it.
Replay GNPX's day
It starts at 9:57 a.m. ET with the real Level 2, time and sales and chart, from the same feed the replay plays, stops at 10:00 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
Intraday run and fade. It opened down 7.3% at $4.15, then ran from the open to the high of $4.83 in 46 minutes, and gave it all back: it traded at $3.92 at 4:00 p.m., below the open.
| Time (ET) | What happened | Watch it |
|---|---|---|
| 7:00 a.m. | News (PRNewsWire): Genprex Selects Leading Clinical and Commercial Contract Development and Manufacturing Organization for Manufacturing Scale Up of Diabetes Gene Therapy | |
| 7:01 a.m. | SEC filing 8-K: FORM 8-K | |
| 7:08 a.m. | First trade 20% above the previous close of $4.47 | |
| 7:09 a.m. | Pre-market high, $7.52 | |
| 7:09 a.m. | Volume since 4:00 a.m. passes the whole float, 818,720 shares | |
| 7:09 a.m. | High of the day to the close, $7.52 | |
| 9:30 a.m. | The open: $4.15, down 7.3% from the previous close | |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $3.92, 47.9% 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
- $4.47
- Open, 9:30 a.m.
- $4.15
- Gap at the open
- −7.3%
- Pre-market high
- $7.52 at 7:09 a.m.
- High, 4 a.m. to 4 p.m.
- $7.52 at 7:09 a.m.
- Low, 4 a.m. to 4 p.m.
- $3.83
- Close, 4 p.m.
- $3.92
- Change at 4 p.m.
- −12.4%
- After-hours high, 4 p.m. to 8 p.m.
- $4.09 at 4:59 p.m.
- Volume, 4 a.m. to 4 p.m.
- 2.33 million
- Volume after hours, 4 p.m. to 8 p.m.
- 38,729
- Relative volume by 8 p.m.
- 18.1×
- Float
- 818,720 shares, from filings as of August 18, 2026
- Shares outstanding
- 819,709
- From news to the move: the first trade 20% above the previous close came 6 minutes after the latest SEC filing before it (8-K, 7:01 a.m.).
- Volume, from the one-minute bars: 1.94 million shares before the 9:30 a.m. open (82%), 99,942 in the first 30 minutes (4%), and 328,082 in the rest of the day to 8 p.m. (14%).
- Float rotation, the volume since 4 a.m. against the float of 818,720 shares: past it once at 7:09 a.m., twice at 7:29 a.m.
- Other days GNPX met the small-cap rule in our recaps: 2, the latest on September 23, 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 GNPX 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 GNPX on August 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.