Hindsight Markets Recaps Small-cap stocks on September 1, 2026
BIAF, September 1: an 8:00 a.m. headline, one halt, and $8.60
BIAF opened up 70% after news, ran to $8.60 through one halt, then fell below its open by the close.
News via Stock News API
What happened
The 8 a.m. headline
The headline started the run. At 8:00 a.m. Business Wire reported a CyPath Lung update. The stock went from $4.62 to $8.00 in two minutes. By 8:02, more shares had traded than the whole float.
The open
The open brought one more push. It opened at $7.73, up 70% from the $4.56 close, and climbed from $7.06 at 9:33.
Stop It's 9:38. BIAF is at $8.15, just under the $8.42 it touched a minute ago. It has run from $7.06 in five minutes. Would you buy here?
Press play: the real Level 2, tape and chart run from 9:35 a.m. and stop at 9:38 a.m. ET for your call.
That minute was the top. A buy order swept to $8.60 at 9:38:03. Eight seconds later a 53K-share sell order hit. The minute closed at $7.36.
The halt
The drop set off a pause. At 9:40:26 trading stopped, with the last trade at $7.11.
Stop It's 9:45. BIAF has been halted since 9:40 with the last trade at $7.11. The high so far was $8.60. Trading is about to resume. Would you buy the reopen?
Press play: the real Level 2, tape and chart run from 9:42 a.m. and stop at 9:45 a.m. ET for your call.
It reopened lower, at $7.02, and fell to $6.70 by 9:48. It closed at $6.51, 24% under the high.
What to take from it: The top lasted seconds, and the price never came back to it.
Replay BIAF's day
It starts at 7:56 a.m. ET with the real Level 2, time and sales and chart, from the same feed the replay plays, stops at 7:59 a.m. and asks what you would do. Or press Play on any moment in How it traded.
The details
How it traded, step by step
Gap, run and fade. It gapped up 69.5% to $7.73 at the open, ran from the open to the high of $8.60 in 8 minutes, then gave back 240% of that move by 4:00 p.m., trading at $6.51, below the open.
| Time (ET) | What happened | Watch it |
|---|---|---|
| 8:00 a.m. | News (Business Wire): bioAffinity Technologies Advances CyPath® Lung for Surveillance of Lung Cancer Survivors | |
| 8:01 a.m. | First trade 20% above the previous close of $4.56 | |
| 8:02 a.m. | Volume since 4:00 a.m. passes the whole float, 584,227 shares | |
| 8:03 a.m. | Pre-market high, $8.43 | |
| 9:30 a.m. | The open: $7.73, up 69.5% from the previous close | |
| 9:38 a.m. | High of the day to the close, $8.60 | |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, $6.51, 24.3% 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
- $4.56
- Open, 9:30 a.m.
- $7.73
- Gap at the open
- +69.5%
- Pre-market high
- $8.43 at 8:03 a.m.
- High, 4 a.m. to 4 p.m.
- $8.60 at 9:38 a.m.
- Low, 4 a.m. to 4 p.m.
- $4.10
- Close, 4 p.m.
- $6.51
- Change at 4 p.m.
- +42.8%
- After-hours high, 4 p.m. to 8 p.m.
- $8.15 at 5:24 p.m.
- Volume, 4 a.m. to 4 p.m.
- 19.19 million
- Volume after hours, 4 p.m. to 8 p.m.
- 1.64 million
- Relative volume by 8 p.m.
- 96.3×
- Float
- 584,227 shares, from filings as of September 1, 2026
- Shares outstanding
- 592,327
- From news to the move: the first trade 20% above the previous close came 1 minute after the latest news item before it (Business Wire, 8:00 a.m.).
- Volume, from the one-minute bars: 8.62 million shares before the 9:30 a.m. open (41%), 4.97 million in the first 30 minutes (24%), and 7.25 million in the rest of the day to 8 p.m. (35%).
- Float rotation, the volume since 4 a.m. against the float of 584,227 shares: past it once at 8:02 a.m., twice at 8:04 a.m., three times at 8:06 a.m.
- Other days BIAF met the small-cap rule in our recaps: 7, the latest on October 8, 2026.
- The next session, September 2, 2026, it was up 48.3% from its previous close at the 4:00 p.m. close.
On the day's lists: the pre-market gappers, gainers, intraday runners, after-hours movers. It is here because it met the small-cap rule on the pre-market gappers: price $2 to $20, up 10% or more, relative volume 5× or more, float under 20 million shares, its high reached $1 or more and it started the day at $20 or under (the rule every page uses).
Halts (1)
| Halted | Resumed | Length | The 5 minutes into it | Reopened at, against the last trade | The 5 minutes after | Reason in the feed | Watch it |
|---|---|---|---|---|---|---|---|
| 9:40 a.m. | 9:45 a.m. | 5 min 0 s | down 9.2% | $7.02, down 1.3% | down 1.7% | LULD pause (limit up-limit down) |
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 BIAF on September 1, 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.