Hindsight Markets Beta

Recaps · September 24, 2026

GCTK, September 24: $5.05 before 4:30, a $3 million offering, and a wall at $3.20

Float
757,086 shares
Volume
26.45 million shares
Previous close
$2.03
Open
$2.43 (up 19.7%)
High
$5.05 at 4:24 a.m.
Close
$2.58
5.052.034 a.m.9:30noon4 p.m.8 p.m.
GCTK on September 24, 2026, one-minute bars in New York time. Shaded: before the 9:30 a.m. open and after the 4:00 p.m. close. Bands: halts.

The day before

On September 23, GCTK opened at $2.22 and reached $5.46. The official close was $2.03, below that open.

That morning at 9:00 Business Wire carried a headline about a strategic update from the CEO. The last bar of that day was $3.65.

Pre-market: the float traded by 4:05 a.m.

The first trades on the 24th were at $4.07, already far above the $2.03 close. The float is 757,086 shares. By 4:05 a.m., more shares had traded than exist in the whole float.

From $3.93 at 4:08 a.m. it ran to $4.92 at 4:15 a.m., up 25%. After a dip to $4.49 at 4:17 it pushed again to $5.05 at 4:24 a.m., the high so far. That is 149% above the previous close.

Within two minutes it was back at $4.62, and by 4:29 a.m. at $4.37. By 5:00 a.m. it was around $4.40. At 5:05 a.m. Benzinga ran the headline “Why GlucoTrack Shares Are Trading Higher By Around 118%; Here Are 20 Stocks Moving Premarket.” The price stayed near $4.50 that minute.

The stock slid to $3.75 by 6:22 a.m. Then at 7:00 a.m. one minute traded 725,437 shares, about the whole float. Its range that minute was $4.16 to $4.78, a lower high under the $5.05 top. 17.38 million shares traded before the bell.

The bid walls

This is the part a chart doesn't show you. At 7:44:03 a bid of 257,504 shares sat at $4.08, 34% of the float. It was pulled at 7:45:26. At 7:45:30 a new bid appeared at $4.12 and grew to 496,552 shares at 7:47:31, 65.6% of the float.

Stop It's 7:54. GCTK is at $4.13. Just below, a bid at $4.12 has been on the book since 7:45 and peaked at 496,552 shares, about 65% of the float. Would you buy here?

Press play: the real Level 2, time and sales and chart stop at 7:54 a.m. ET for your call, then show what happened. The clip starts at 7:51 a.m. ET.

At 7:54:38 the bid was pulled. 2,657 shares traded at exactly $4.12 at 7:54:37, and the 7:54 candle dropped to $3.86. It bounced back to $4.38 by 8:12.

At 8:45 Business Wire ran “Glucotrack, Inc. Announces Pricing of $3 Million Public Offering.” In that same minute the stock went from $4.11 to a low of $2.25 on 600,330 shares. At 8:45:01 two sell sweeps went through 23 price levels between them, $4.06 down to $3.84. It was $2.42 by the end of the minute and reached a pre-market low of $2.11 at 9:06.

The open and the wall at $3.20

It opened at $2.43, up 20% from the previous close. A buy sweep at 9:30:38 pushed it from $2.51 to $2.60, and it climbed to $3.25 by 9:39.

At 9:40:19 an ask wall appeared at exactly $3.20. It was still on the book going into 9:42.

Stop It's 9:42. GCTK is at $3.05. A large block of stock has been offered at exactly $3.20 since 9:40. Would you buy here?

Press play: the real Level 2, time and sales and chart stop at 9:42 a.m. ET for your call, then show what happened. The clip starts at 9:39 a.m. ET.

Trades at exactly $3.20 began at 9:42:34. In 24.1 seconds, 58,574 shares traded at $3.20 and the wall was gone. It wasn't pulled. Buyers ate it. A 26,096-share print at the bid and a 33,197-share buy sweep from $3.16 to $3.22 both came at 9:42:58.

It didn't follow through. The 9:43 candle topped at $3.25, the same high as at 9:39, and the 9:44 candle closed at $2.94. By 9:47 it was $2.75.

The rest of the day

At 9:59:08 another ask wall appeared, this time at $3.00. It grew to 71,029 shares by 10:57, about 9.4% of the float. The stock never got there. After the 10:00 candle's $2.82 high, the rest of the session topped out at $2.77.

After 10:00 it drifted between about $2.43 and $2.77 on thin volume. Late in the day, at 3:52 p.m., a bid built at $2.57, reaching 231,985 shares by 3:59 p.m., about 31% of the float. It was $2.58 at 4 p.m.

It ended 49% under the $5.05 high. That high came at 4:24 a.m., 108% above the $2.43 open. Through the close, 25.99 million shares traded: the float changed hands about 34 times, at about 29 times its normal volume. Of that, 8.6 million came in the regular session.

After hours

After hours it traded between $2.50 and $2.73, with 463,975 shares. At 5:15 p.m. the company filed an 8-K (a current report). At 5:25 p.m. it filed a 424B5 (a prospectus supplement for an offering). The price was $2.66 at both times.

What to take from it

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