Hindsight Markets / Small-cap stocks on August 3, 2026

HYFM on August 3, 2026: why it ran

Published October 9, 2026 · By Hindsight Markets

On August 3, 2026, HYFM opened up 477.0% from the previous close of 0.5390 and reached 4.12 at 7:58 a.m. ET. The exchange halted it 25 times.

Previous close

0.5390

Open, 9:30 a.m.

3.11

Gap at the open

up 477.0%

Pre-market high

4.12 at 7:58 a.m.

High, 4 a.m. to 4 p.m.

4.12 at 7:58 a.m.

Low, 4 a.m. to 4 p.m.

0.5060

After-hours high, 4 p.m. to 8 p.m.

2.30 at 4:34 p.m.

Last trade before 4:00 p.m.

2.12

Volume

67.85 million

Relative volume

4818.8x

Float

4.24 million shares, from filings as of August 3, 2026

Shares outstanding

4.76 million

Halts

25

Why it ran

News and SEC filings for HYFM published between the previous session's close and the first minute HYFM traded 20% above it, at 7:30 a.m. ET, newest first, from the same feeds the replay shows.

1. 7:30 a.m. ET · GlobeNewsWire

   Hydrofarm Completes Sale of Aurora Peat Products and Launches Project Agility to Scale Its Logistics Services Platform

News via Stock News API

How it traded

Gap and fade. It gapped up 477.0% to 3.11 at the open and traded below the open by 4:00 p.m., at 2.12.

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

• 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, 7:30 a.m.).
• Volume, from the one-minute bars: 37.98 million shares before the 9:30 a.m. open (56%), 1.90 million in the first 30 minutes (3%), and 27.96 million in the rest of the day to 8 p.m. (41%).
• Float rotation, the volume since 4 a.m. against the float of 4.24 million shares: past it once at 7:39 a.m., twice at 7:47 a.m., three times at 7:50 a.m.
• The halt at 9:30 a.m.: down 7.2% in the 5 minutes into it, reopened at 2.89, down 2.4% from the last trade before it, then down 5.2% over the next 5 minutes.
• The halt at 9:36 a.m.: down 7.4% in the 5 minutes into it, reopened at 2.66, down 2.9% from the last trade before it.
• The halt at 9:41 a.m.: down 8.4% in the 5 minutes into it, reopened at 2.50, down 0.4% from the last trade before it.
• The halt at 9:46 a.m.: up 5.6% in the 5 minutes into it, reopened at 2.70, up 1.9% from the last trade before it, then down 5.6% over the next 5 minutes.
• The halt at 9:52 a.m.: down 3.8% in the 5 minutes into it, reopened at 2.32, down 9.0% from the last trade before it.
• The halt at 10:02 a.m.: down 3.1% in the 5 minutes into it, reopened at 2.47, unchanged from the last trade before it.
• The halt at 10:07 a.m.: down 6.1% in the 5 minutes into it, reopened at 2.15, down 7.3% from the last trade before it, then up 7.0% over the next 5 minutes.
• The halt at 10:18 a.m.: down 0.9% in the 5 minutes into it, reopened at 2.29, down 0.4% from the last trade before it, then down 6.6% over the next 5 minutes.
• The halt at 10:24 a.m.: down 7.0% in the 5 minutes into it, reopened at 1.80, down 15.9% from the last trade before it.
• The halt at 10:34 a.m.: down 8.9% in the 5 minutes into it, reopened at 1.95, unchanged from the last trade before it, then up 7.7% over the next 5 minutes.
• The halt at 10:41 a.m.: up 7.7% in the 5 minutes into it, reopened at 2.11, up 0.5% from the last trade before it, then up 8.1% over the next 5 minutes.
• The halt at 10:48 a.m.: up 8.6% in the 5 minutes into it, reopened at 2.29, up 0.4% from the last trade before it.
• The halt at 10:53 a.m.: down 6.1% in the 5 minutes into it, reopened at 2.05, down 4.2% from the last trade before it, then up 2.9% over the next 5 minutes.
• The halt at 11:08 a.m.: down 6.3% in the 5 minutes into it, reopened at 1.91, down 1.5% from the last trade before it, then up 1.6% over the next 5 minutes.
• The halt at 11:26 a.m.: down 6.5% in the 5 minutes into it, reopened at 1.68, down 3.4% from the last trade before it, then down 7.7% over the next 5 minutes.
• The halt at 11:33 a.m.: down 10.9% in the 5 minutes into it, reopened at 1.55, unchanged from the last trade before it, then up 4.5% over the next 5 minutes.
• The halt at 11:46 a.m.: down 10.3% in the 5 minutes into it, reopened at 1.48, unchanged from the last trade before it, then up 4.7% over the next 5 minutes.
• The halt at 12:20 p.m.: up 12.3% in the 5 minutes into it, reopened at 2.17, up 3.3% from the last trade before it, then up 6.9% over the next 5 minutes.
• The halt at 12:26 p.m.: up 10.5% in the 5 minutes into it, reopened at 2.33, up 0.4% from the last trade before it.
• The halt at 12:31 p.m.: down 6.0% in the 5 minutes into it, reopened at 2.06, down 5.5% from the last trade before it, then down 4.4% over the next 5 minutes.
• The halt at 12:39 p.m.: down 9.6% in the 5 minutes into it, reopened at 1.98, up 0.5% from the last trade before it, then up 11.6% over the next 5 minutes.
• The halt at 1:23 p.m.: down 10.0% in the 5 minutes into it, reopened at 1.88, unchanged from the last trade before it, then up 13.3% over the next 5 minutes.
• The halt at 1:31 p.m.: up 13.3% in the 5 minutes into it, reopened at 2.14, up 0.5% from the last trade before it, then unchanged over the next 5 minutes.
• The halt at 3:00 p.m.: up 15.0% in the 5 minutes into it, reopened at 2.37, unchanged from the last trade before it, then down 3.0% over the next 5 minutes.
• The halt at 3:27 p.m.: down 6.7% in the 5 minutes into it, reopened at 2.09, down 6.7% from the last trade before it, then up 3.6% over the next 5 minutes.
• Other days HYFM met the small-cap rule in our recaps: 1, the latest on August 5, 2026.

Halts

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.