Hindsight Markets Recaps Small-cap stocks on September 11, 2026
GTBP, September 11: news and $8.80
GTBP opened near its previous close after news, then ran to $8.80 during the session.
News via Stock News API
What happened
Before the open
The news came first: news at 8:00 a.m. Before the bell it reached $6.68, on 2K shares.
The open
It opened near its previous close, at $6.59. It ran to $8.80 by 3:33 p.m.
The close
It closed at $8.60, 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 6.6% at $6.59, then ran from the open to the high of $8.80 in 363 minutes.
| Time (ET) | What happened |
|---|---|
| 8:00 a.m. | News (GlobeNewsWire): GT Biopharma to Host Live Company Presentation on the Development of TriKE® Platform for Cancer Treatment, September 11, 2026 |
| 8:53 a.m. | Pre-market high, $6.68 |
| 9:30 a.m. | The open: $6.59, up 6.6% from the previous close |
| 10:14 a.m. | First trade 20% above the previous close of $6.18 |
| 3:33 p.m. | High of the day to the close, $8.80 |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $8.60, 2.3% 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
- $6.18
- Open, 9:30 a.m.
- $6.59
- Gap at the open
- +6.6%
- Pre-market high
- $6.68 at 8:53 a.m.
- High, 4 a.m. to 4 p.m.
- $8.80 at 3:33 p.m.
- Low, 4 a.m. to 4 p.m.
- $6.12
- Close, 4 p.m.
- $8.60
- Change at 4 p.m.
- +39.2%
- After-hours high, 4 p.m. to 8 p.m.
- $8.70 at 5:01 p.m.
- Volume, 4 a.m. to 4 p.m.
- 193,707
- Volume after hours, 4 p.m. to 8 p.m.
- 8,255
- Relative volume by 8 p.m.
- 19.7×
- Float
- 1.77 million shares, from filings as of September 11, 2026
- Shares outstanding
- 1.80 million
- From news to the move: the first trade 20% above the previous close came 2 hours 14 minutes after the latest news item before it (GlobeNewsWire, 8:00 a.m.).
- Volume, from the one-minute bars: 1,636 shares before the 9:30 a.m. open (1%), 12,732 in the first 30 minutes (6%), and 187,594 in the rest of the day to 8 p.m. (93%).
- Other days GTBP met the small-cap rule in our recaps: 2, the latest on September 15, 2026.
- The next session, September 14, 2026, it was up 37.6% from its previous close at the 4:00 p.m. close.
On the day's lists: the gainers, intraday runners. It is here because it met the small-cap rule on the gainers: 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 GTBP 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 GTBP 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.