Hindsight Markets Recaps Small-cap stocks on August 21, 2026
GDC, August 21: a run to $3.59
GDC opened near its previous close, ran to $3.59, then fell below its open by the close.
What happened
Before the open
We found no news or filing before the move. Before the bell it reached $2.66, on 37K shares.
The open
It opened near its previous close, at $2.59. It ran to $3.59 by 1:08 p.m.
The close
It closed at $1.55, 57% under its high.
What to take from it: The run did not hold: it finished below where it opened.
The details
How it traded, step by step
Intraday run and fade. It opened up 5.3% at $2.59, then ran from the open to the high of $3.59 in 218 minutes, and gave it all back: it traded at $1.55 at 4:00 p.m., below the open.
| Time (ET) | What happened |
|---|---|
| 6:39 a.m. | Pre-market high, $2.66 |
| 9:30 a.m. | The open: $2.59, up 5.3% from the previous close |
| 11:35 a.m. | First trade 20% above the previous close of $2.46 |
| 1:08 p.m. | High of the day to the close, $3.59 |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $1.55, 56.8% 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
- $2.46
- Open, 9:30 a.m.
- $2.59
- Gap at the open
- +5.3%
- Pre-market high
- $2.66 at 6:39 a.m.
- High, 4 a.m. to 4 p.m.
- $3.59 at 1:08 p.m.
- Low, 4 a.m. to 4 p.m.
- $1.30
- Close, 4 p.m.
- $1.55
- Change at 4 p.m.
- −37.0%
- After-hours high, 4 p.m. to 8 p.m.
- $1.64 at 5:17 p.m.
- Volume, 4 a.m. to 4 p.m.
- 3.41 million
- Volume after hours, 4 p.m. to 8 p.m.
- 187,463
- Relative volume by 8 p.m.
- 9.6×
- Float
- 4.08 million shares, from filings as of August 21, 2026
- Shares outstanding
- 4.16 million
- Volume, from the one-minute bars: 37,003 shares before the 9:30 a.m. open (1%), 33,481 in the first 30 minutes (1%), and 3.53 million in the rest of the day to 8 p.m. (98%).
- Other days GDC met the small-cap rule in our recaps: 3, the latest on September 22, 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 GDC 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 GDC on August 21, 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.