Hindsight Markets Recaps Small-cap stocks on August 17, 2026
OABI, August 17: news and a gap that faded
OABI opened up 24% after news, then faded below its open by the close.
News via Stock News API
What happened
Before the open
The news came first: news at 6:01 a.m. Before the bell it reached $5.90, on 5.1M shares.
The open
It opened up 24%, at $4.18.
The close
It closed at $3.82, 35% under its high.
What to take from it: A big gap is not a trend. This one traded below its open by the close.
The details
How it traded, step by step
Gap and fade. It gapped up 23.7% to $4.18 at the open and traded below the open by 4:00 p.m., at $3.82.
| Time (ET) | What happened |
|---|---|
| 6:01 a.m. | News (Business Wire): OmniAb Announces Global Collaboration and License Agreement for Ion Channel Program with Eli Lilly & Company |
| 6:01 a.m. | First trade 20% above the previous close of $3.38 |
| 6:01 a.m. | Pre-market high, $5.90 |
| 6:01 a.m. | High of the day to the close, $5.90 |
| 9:30 a.m. | The open: $4.18, up 23.7% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $3.82, 35.3% 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
- $3.38
- Open, 9:30 a.m.
- $4.18
- Gap at the open
- +23.7%
- Pre-market high
- $5.90 at 6:01 a.m.
- High, 4 a.m. to 4 p.m.
- $5.90 at 6:01 a.m.
- Low, 4 a.m. to 4 p.m.
- $3.39
- Close, 4 p.m.
- $3.82
- Change at 4 p.m.
- +13.0%
- After-hours high, 4 p.m. to 8 p.m.
- $3.85 at 4:00 p.m.
- Volume, 4 a.m. to 4 p.m.
- 10.34 million
- Volume after hours, 4 p.m. to 8 p.m.
- 184,222
- Relative volume by 8 p.m.
- 27.7×
- Float
- 109.64 million shares, from filings as of August 17, 2026
- Shares outstanding
- 145.39 million
- From news to the move: the first trade 20% above the previous close came less than a minute after the latest news item before it (Business Wire, 6:01 a.m.).
- Volume, from the one-minute bars: 5.09 million shares before the 9:30 a.m. open (48%), 1.99 million in the first 30 minutes (19%), and 3.44 million in the rest of the day to 8 p.m. (33%).
- Other days OABI met the small-cap rule in our recaps: 1, the latest on August 7, 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 OABI 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 OABI on August 17, 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.