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Hindsight Markets Recaps Small-cap stocks on September 23, 2026

ARTL, September 23: a 7:33 spike, 11 halts, and $15.73

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ARTL opened near its previous close after news, then ran to $15.73 through eleven halts during the session.

News via Stock News API

News$15.73$4.154 a.m.9:30noon4 p.m.8 p.m.
ARTL on September 23, 2026, one-minute bars, New York time. Bands: halts. Flags: the news or filing before the move. Dotted line: the previous close. Shaded: before the 9:30 a.m. open and after the 4:00 p.m. close.

What happened

News, then a fade

The 7:33 a.m. patent news gave ARTL a spike that did not last. It jumped to $5.98 that minute, then fell to $3.60 by 7:37. It opened at $3.99, below the $4.15 close.

Six halts up

The run started late morning and came in halts. The first came at 10:54:26 at $5.33. It reopened 19% higher.

By the sixth reopen, at 12:08, it was $12.75. Then it swung hard, down to $9.26 by 12:46.

The wall at $15.00

From 12:20 a wall of shares for sale sat at $15.00.

Stop It's 12:58. ARTL is at $12.38, up from $9.26 twelve minutes ago. Stock has been offered at exactly $15.00 since 12:20. Would you buy here?

Press play: the real Level 2, tape and chart run from 12:55 p.m. and stop at 12:58 p.m. ET for your call.

It was halted at 12:59:39 and reopened at $14.30. At 1:09:51 buyers ate the $15.00 wall in under a second. The high was $15.73.

Five seconds later a sell order swept it down to $13.40.

The fade

The next push stopped lower, at $13.97. It slid all afternoon and closed at $7.30, 54% under the high.

What to take from it: The $15.00 wall was eaten in under a second, and five seconds later sellers swept the price back down.

Replay ARTL's day

It starts at 12:44 p.m. ET with the real Level 2, time and sales and chart, from the same feed the replay plays, stops at 12:47 p.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

Intraday run. It opened down 3.9% at $3.99, then ran from the open to the high of $15.73 in 219 minutes through 10 halts.

Time (ET)What happenedWatch it
7:33 a.m.News (GlobeNewsWire): Artelo Biosciences Files New Provisional Patent Application Covering ART27.13 for Obesity, Alone and in Combination with GLP-1 Receptor Agonists, Following Unexpected Nonclinical Findings
7:33 a.m.First trade 20% above the previous close of $4.15
7:33 a.m.Pre-market high, $5.98
9:30 a.m.The open: $3.99, down 3.9% from the previous close
11:14 a.m.Volume since 4:00 a.m. passes the whole float, 510,398 shares
1:09 p.m.High of the day to the close, $15.73
3:59 p.m.Last trade before the 4:00 p.m. close, $7.30, 53.6% 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
$4.15
Open, 9:30 a.m.
$3.99
Gap at the open
−3.9%
Pre-market high
$5.98 at 7:33 a.m.
High, 4 a.m. to 4 p.m.
$15.73 at 1:09 p.m.
Low, 4 a.m. to 4 p.m.
$3.60
Close, 4 p.m.
$7.30
Change at 4 p.m.
+75.9%
After-hours high, 4 p.m. to 8 p.m.
$7.61 at 4:00 p.m.
Volume, 4 a.m. to 4 p.m.
10.43 million
Volume after hours, 4 p.m. to 8 p.m.
767,801
Relative volume by 8 p.m.
202.4×
Float
510,398 shares, from filings as of September 23, 2026
Shares outstanding
510,563
  • 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 (GlobeNewsWire, 7:33 a.m.).
  • Volume, from the one-minute bars: 285,786 shares before the 9:30 a.m. open (3%), 23,524 in the first 30 minutes (0%), and 10.89 million in the rest of the day to 8 p.m. (97%).
  • Float rotation, the volume since 4 a.m. against the float of 510,398 shares: past it once at 11:14 a.m., twice at 11:35 a.m., three times at 11:41 a.m.
  • Other days ARTL met the small-cap rule in our recaps: 2, the latest on August 31, 2026.

On the day's lists: the gainers, intraday runners. It is here because it met the small-cap rule on the gainers: 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 (11)
HaltedResumedLengthThe 5 minutes into itReopened at, against the last tradeThe 5 minutes afterReason in the feedWatch it
10:54 a.m.11:14 a.m.19 min 56 sup 15.9%$6.33, up 18.8%LULD pause (limit up-limit down)
11:14 a.m.11:34 a.m.20 min 1 sup 30.6%$8.63, up 24.0%up 10.0%LULD pause (limit up-limit down)
11:35 a.m.11:40 a.m.5 min 0 sup 36.4%$8.83, down 7.0%up 11.2%LULD pause (limit up-limit down)
11:41 a.m.11:46 a.m.5 min 0 sup 3.5%$9.25, down 5.8%up 10.1%LULD pause (limit up-limit down)
11:47 a.m.11:57 a.m.10 min 0 sup 3.7%$10.89, up 7.0%up 10.0%LULD pause (limit up-limit down)
11:58 a.m.12:08 p.m.10 min 0 sup 17.7%$12.75, up 6.4%down 4.2%LULD pause (limit up-limit down)
12:09 p.m.12:19 p.m.10 min 0 sup 2.0%$10.90, down 10.8%up 15.9%LULD pause (limit up-limit down)
12:20 p.m.12:30 p.m.10 min 0 sup 3.4%$13.89, up 10.0%down 10.9%LULD pause (limit up-limit down)
12:31 p.m.12:46 p.m.15 min 0 sdown 2.1%$10.29, down 16.8%up 10.0%LULD pause (limit up-limit down)
12:59 p.m.1:09 p.m.10 min 0 sup 16.6%$14.30, up 9.0%down 10.8%LULD pause (limit up-limit down)
1:11 p.m.1:21 p.m.10 min 0 sdown 2.8%$11.50, down 9.8%up 11.7%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 ARTL on September 23, 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.

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