Recaps · September 18, 2026

GRML, September 18: a dead regular session, then $4.82 after hours

• Small cap
• Momentum
• Main move: after hours
• Thin regular session
• News after the close
• Low float

Float

4.36 million shares

Volume

2.48 million shares

Previous close

$2.98

Open

$2.99 (up 0.3%)

High

$3.04 at 9:49 a.m.

Close

$2.86

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.

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.