Hindsight Markets Small-cap stocks on August 28, 2026
RDIB on August 28, 2026: why it ran
On August 28, 2026, RDIB opened down 1.8% from the previous close of 15.40 and reached 23.96 at 3:08 p.m. ET. The exchange did not halt it.
- Previous close
- 15.40
- Open, 9:30 a.m.
- 15.13
- Gap at the open
- down 1.8%
- Pre-market high
- 16.03 at 8:32 a.m.
- High, 4 a.m. to 4 p.m.
- 23.96 at 3:08 p.m.
- Low, 4 a.m. to 4 p.m.
- 14.51
- After-hours high, 4 p.m. to 8 p.m.
- 18.68 at 4:02 p.m.
- Last trade before 4:00 p.m.
- 18.14
- Volume
- 266,835
- Relative volume
- 1.1x
- Float
- 521,602 shares, from filings as of August 28, 2026
- Shares outstanding
- 22.89 million
- Halts
- none in the halt feed
Why it ran
News and SEC filings for RDIB published between the previous session's close and the first minute RDIB traded 20% above it, at 1:42 p.m. ET, newest first, from the same feeds the replay shows.
No news found before the move.
How it traded
Intraday run. It opened down 1.8% at 15.13, then ran from the open to the high of 23.96 in 338 minutes.
| Time (ET) | What happened |
|---|---|
| 8:32 a.m. | Pre-market high, 16.03 |
| 9:30 a.m. | The open: 15.13, down 1.8% from the previous close |
| 1:42 p.m. | First trade 20% above the previous close of 15.40 |
| 3:08 p.m. | High of the day to the close, 23.96 |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, 18.14, 24.3% below the high |
The shape is a fixed rule, not a judgement: gapped 10% or more at the open, ran 10% or more from the open to the high, and faded if it gave back 30% or more of that move by the close.
The day in numbers
- Volume, from the one-minute bars: 22,849 shares before the 9:30 a.m. open (9%), 551 in the first 30 minutes (0%), and 243,435 in the rest of the day to 8 p.m. (91%).
- Other days RDIB met the small-cap rule in our recaps: 1, the latest on August 26, 2026.
Halts
The exchange's halt feed shows no halts for RDIB that day.
On this date the LULD plan ran under Amendment 18, in force from February 24, 2020: no band doubling at the open, and the closing doubling only for Tier 1 stocks and Tier 2 stocks whose previous close was at or below three dollars. See LULD halts or work out a band with the LULD calculator.
Trade this day
Replay RDIB on August 28, 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.