Hindsight Markets Recaps Small-cap stocks on August 18, 2026
BIVI, August 18: an after-hours run to $1.80
BIVI barely moved in the regular session, then ran to $1.80 after the close.
What happened
Before the open
We found no news or filing before the move. Before the bell it reached $1.18, on 35K shares.
The open
It opened near its previous close, at $1.13.
The close
It closed at $0.965, 18% under its high. After the close it ran to $1.80 by 6:39 p.m.
What to take from it: The day's real move came after the 4 p.m. close, not in the regular session.
The details
How it traded, step by step
After-hours run. It opened down 3.4% at $1.13 and traded at $0.965 at the 4:00 p.m. close, then ran 86.5% from $0.965 to $1.80 at 6:39 p.m. after the close, on 5.23 million shares traded after hours.
| Time (ET) | What happened |
|---|---|
| 4:00 a.m. | Pre-market high, $1.18 |
| 4:00 a.m. | High of the day to the close, $1.18 |
| 9:30 a.m. | The open: $1.13, down 3.4% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $0.965, 18.2% below the high |
| 6:27 p.m. | First trade 20% above the previous close of $1.17 |
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
- $1.17
- Open, 9:30 a.m.
- $1.13
- Gap at the open
- −3.4%
- Pre-market high
- $1.18 at 4:00 a.m.
- High, 4 a.m. to 4 p.m.
- $1.18 at 4:00 a.m.
- Low, 4 a.m. to 4 p.m.
- $0.945
- Close, 4 p.m.
- $0.965
- Change at 4 p.m.
- −17.5%
- After-hours high, 4 p.m. to 8 p.m.
- $1.80 at 6:39 p.m.
- Volume, 4 a.m. to 4 p.m.
- 1.56 million
- Volume after hours, 4 p.m. to 8 p.m.
- 5.23 million
- Relative volume by 8 p.m.
- 2.3×
- Float
- 8.43 million shares, from filings as of August 18, 2026
- Shares outstanding
- 8.45 million
- Volume, from the one-minute bars: 35,323 shares before the 9:30 a.m. open (1%), 257,466 in the first 30 minutes (4%), and 6.50 million in the rest of the day to 8 p.m. (96%).
- Other days BIVI met the small-cap rule in our recaps: 5, the latest on November 3, 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 BIVI 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 BIVI 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.