Hindsight Markets Recaps Small-cap stocks on October 15, 2026
OPK, October 15: news and a gap that held
OPK opened up 20% after news and held near that level into the close.
News via Stock News API
What happened
Before the open
The news came first: news at 7:30 a.m. Before the bell it reached $2.05, on 13M shares.
The open
It opened up 20%, at $1.64.
The close
It closed at $1.62, 21% under its high.
What to take from it: The gap was the move. After the open it went sideways.
The details
How it traded, step by step
Gap and hold. It gapped up 19.7% to $1.64 at the open and held near or above it, trading at $1.62 at 4:00 p.m.
| Time (ET) | What happened |
|---|---|
| 7:30 a.m. | News (PRNewsWire): Labcorp Enters into Agreement with OPKO Health to Acquire Select Assets of BioReference Health |
| 7:43 a.m. | First trade 20% above the previous close of $1.37 |
| 8:23 a.m. | Pre-market high, $2.05 |
| 8:23 a.m. | High of the day to the close, $2.05 |
| 9:30 a.m. | The open: $1.64, up 19.7% from the previous close |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $1.62, 21.0% 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
- $1.37
- Open, 9:30 a.m.
- $1.64
- Gap at the open
- +19.7%
- Pre-market high
- $2.05 at 8:23 a.m.
- High, 4 a.m. to 4 p.m.
- $2.05 at 8:23 a.m.
- Low, 4 a.m. to 4 p.m.
- $1.35
- Close, 4 p.m.
- $1.62
- Change at 4 p.m.
- +18.2%
- After-hours high, 4 p.m. to 8 p.m.
- $1.65 at 7:49 p.m.
- Volume, 4 a.m. to 4 p.m.
- 26.97 million
- Volume after hours, 4 p.m. to 8 p.m.
- 530,786
- Relative volume by 8 p.m.
- 23.0×
- Float
- 414.80 million shares, from filings as of October 15, 2026
- Shares outstanding
- 746.33 million
- From news to the move: the first trade 20% above the previous close came 13 minutes after the latest news item before it (PRNewsWire, 7:30 a.m.).
- Volume, from the one-minute bars: 13.38 million shares before the 9:30 a.m. open (49%), 3.72 million in the first 30 minutes (14%), and 10.40 million in the rest of the day to 8 p.m. (38%).
- In our recaps, this is the only day OPK met the small-cap rule.
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 OPK 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 OPK on October 15, 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.