Hindsight Markets Small-cap stocks on September 18, 2026
GRML on September 18, 2026: why it ran
On September 18, 2026, GRML opened up 0.3% from the previous close of 2.98 and reached 3.04 at 9:49 a.m. ET. The exchange did not halt it.
- Previous close
- 2.98
- Open, 9:30 a.m.
- 2.99
- Gap at the open
- up 0.3%
- Pre-market high
- 3.02 at 9:29 a.m.
- High, 4 a.m. to 4 p.m.
- 3.04 at 9:49 a.m.
- Low, 4 a.m. to 4 p.m.
- 2.82
- After-hours high, 4 p.m. to 8 p.m.
- 4.82 at 7:12 p.m.
- Last trade before 4:00 p.m.
- 2.86
- Volume
- 2.48 million
- Relative volume
- 6.7x
- Float
- 4.36 million shares, from filings as of September 18, 2026
- Shares outstanding
- 4.81 million
- Halts
- none in the halt feed
Replay GRML's day
It starts at 9:31 a.m. ET with the real Level 2, time and sales and chart, from the same feed the replay plays, stops at 9:34 a.m. and asks what you would do. Or press Play on any moment in How it traded.
The day, step by step
- Small cap
- Momentum
- Main move: after hours
- Thin regular session
- News after the close
- Low float
The day before
On September 17, GRML opened at $2.99, hit a high of $3.12 and a low of $2.94. The official close was $2.98. That is the price everything on the 18th is measured against.
Pre-market: almost nothing traded
The first trade of the 18th was at 5:27 a.m., at $2.98. After that, trades came a few shares at a time. The stock sat between $2.95 and $2.99 for hours.
The pre-market high was $3.02 at 9:29 a.m. Just 4,162 shares traded before the bell, in a stock with a 4.36 million-share float. Most of that came in the last few minutes: 3,023 shares in the 9:28 minute.
The open
It opened at $2.99, one cent above the $2.98 previous close. The 9:30 minute traded 4,714 shares.
Stop It's 9:32. GRML is at $2.98, level with yesterday's close of $2.98. It opened at $2.99 and traded between $2.95 and $3.00 in the first minute on 4,714 shares. Since then it has gone quiet: no trades at all in the 9:31 minute. The pre-market high was $3.02, and the float is 4.36 million shares. Would you buy here?
Press play: the real Level 2, time and sales and chart stop at 9:32 a.m. ET for your call, then show what happened. The clip starts at 9:29 a.m. ET.
Then volume dried up. There were no trades at all in many minutes.
At 9:45 it moved from $3.00 to $3.03 on 1,157 shares. At 9:49 it reached $3.04, the high of the regular session. That was 5 cents above the open. Only 310 shares traded in that minute.
The drift down
After 9:49 it slid. It was at $2.98 by 10:05 and $2.95 at 10:26. At 12:00 it dropped to $2.92, and by 1:09 p.m. it traded at $2.88.
At 3:03 p.m. it fell to $2.84 on 4,807 shares. The low of the day, $2.82, came at 3:42 p.m. It closed at $2.85, down 4% from the previous close.
Regular-session volume was 90,858 shares. Pre-market added another 4,162 shares. That is still small: about 2% of the float traded in the 9:30 to 4:00 hours.
After hours: the news and the run
After the close the stock stayed near $2.85 to $2.86. At 5:10 p.m. it was $2.93. At 5:18 p.m. it traded as high as $3.04, level with the day's regular-session high.
The news came later. At 7:03 p.m. GlobeNewsWire ran: “Greenland Mines Applauds Historic U.S.-Denmark-Greenland Security Agreement, Reinforcing Greenland's Strategic Importance to the United States.” The stock had already moved before that headline arrived.
The first big move was at 5:19 and 5:20 p.m. It went from $3.03 to $3.84 in two minutes, with 26,502 shares in the 5:20 minute. By 5:22 it had 61,257 shares in one minute. Then it pulled back, as low as $3.10 at 5:22, and traded between $3.13 and $3.50 in the 5:27 minute.
It climbed again. It hit $3.67 at 5:56 p.m., then fell to $3.15 at 6:00 p.m. It pushed over $4 at 6:27 and reached $4.47 at 6:42.
At 7:09 it spiked to $4.78 on 68,060 shares, the biggest volume of any minute that evening. The high was $4.82 at 7:12 p.m., up 62% from the previous close. From the 4:00 p.m. close at $2.85, that is up 69%. It then slipped to $4.06 at 7:28 and was around $4.53 at 7:59.
After hours alone traded 2,389,102 shares, about 26 times the regular session's volume. More shares traded after the close than in the whole regular day, and about 55% of the float.
What to take from it
- A quiet regular session can hide the real move. The stock gained 2% at its best, closed down 4%, and then did far more after hours.
- Thin stocks cost more than the screen says. At the regular-session high, 10 shares were offered at $3.03, and 5,000 shares averaged $3.10.
- The move started before the headline. The first jump was at 5:19 p.m. The 7:03 p.m. news came after a run was already underway.
Why it ran
News and SEC filings for GRML published between the previous session's close and the first minute GRML traded 20% above it, at 5:20 p.m. ET, newest first, from the same feeds the replay shows.
No news found before the move.
How it traded
| Time (ET) | What happened | Watch it |
|---|---|---|
| 9:29 a.m. | Pre-market high, 3.02 | |
| 9:30 a.m. | The open: 2.99, up 0.3% from the previous close | |
| 9:49 a.m. | High of the day to the close, 3.04 | |
| 3:59 p.m. | Last trade before the 4:00 p.m. close, 2.86, 5.9% below the high | |
| 5:20 p.m. | First trade 20% above the previous close of 2.98 |
The shape is a fixed rule, not a judgement: gapped 10% or more at the open, ran 10% or more from the open to the high, and faded if it gave back 30% or more of that move by the close.
The day in numbers
- Volume, from the one-minute bars: 4,162 shares before the 9:30 a.m. open (0%), 6,952 in the first 30 minutes (0%), and 2.47 million in the rest of the day to 8 p.m. (100%).
- Other days GRML met the small-cap rule in our recaps: 5, the latest on September 24, 2026.
- The next session, September 21, 2026, it was up 230.2% from its previous close at the 4:00 p.m. close.
Halts
The exchange's halt feed shows no halts for GRML that day.
On this date the LULD plan ran under Amendment 18, in force from February 24, 2020: no band doubling at the open, and the closing doubling only for Tier 1 stocks and Tier 2 stocks whose previous close was at or below three dollars. See LULD halts or work out a band with the LULD calculator.
Trade this day
Replay GRML on September 18, 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.