AMIX on August 4, 2026: why it ran

The day, step by step

• Small cap
• Momentum
• Gap and go
• Catalyst: news
• Ask wall breaks
• Halt run
• Halted 11 times
• Float traded ~56x

The day before

On August 3, AMIX traded between $2.98 and $3.79 on just 148,448 shares. The official close was $3.65. The float is 954,182 shares, so it takes very little to move it.

Pre-market: the float traded by 8:21 a.m.

It was quiet for hours. The first trades, from 4:07 a.m., were around $3.53, below the $3.65 close. At 8:09 a.m. it was still $3.58.

At 8:15 a.m. GlobeNewsWire ran: “Autonomix Medical Expands Precision Neuromodulation Platform with Broad New U.S. Patent Supporting Nerve Sensing, Mapping and Targeted Therapy”. The 8:15 candle went to $4.40 and the 8:16 candle to $4.56, on 83,361 shares.

The big volume came at 8:20 and 8:21. It went from $4.05 to $5.37, then to $6.55. By 8:21 a.m., more shares had traded than exist in the whole float (954,182).

The pre-market high was $7.35 at 8:31 a.m. Then it faded. By 9:02 it was down to $4.51. At 9:20 it turned up again. 8.05 million shares traded before the bell, about eight times the float.

The open and the first halts

It opened at $5.40, up 48% from the $3.65 close. By 9:31 it was at $6.30, and at 9:31:30 it was halted (a volatility pause).

It reopened at 9:36:30 at $6.30. The first print back was 49,106 shares at $6.30. The 9:37 candle ran to $7.43 on 857,891 shares. By the end of that minute, about ten times the float had traded since the pre-market began.

At 9:40:21 it was halted again. The last candle before the halt closed at $6.19. It reopened at 9:45:21 at $5.88, and the 9:45 candle hit $5.24, the low since the open. At 9:46:02 one buyer swept 82,104 shares from $5.24 up to $5.57 in a fraction of a second.

The wall at $7.00

From 9:47 to 11:12 it stayed between $5.40 and $6.92. The Level 2 book showed more.

From 9:47:28 on, someone was offering stock at exactly $7.00. It grew for more than an hour. By 11:07 there were 44,934 shares for sale at $7.00, about 4.7% of the float, across all exchanges.

At 11:13:43 a single buy order swept 86,852 shares from $6.90 to $7.07. In that one second, 38,552 shares traded at exactly $7.00 and the wall was gone. It was eaten at 11:13:44. The 11:13 candle went from $6.58 to $7.28 on 408,524 shares.

At 11:17 it reached $7.76, and at 11:17:41 it was halted. It reopened at 11:27:41 at $8.40. The first print back was one trade of 123,085 shares at $8.40.

The wall at $10.00

From $8.40 it climbed to $9.89 by 11:36. At 11:37:14 a new ask wall showed up at exactly $10.00.

At 11:47:26 a bid wall appeared at $9.00. It peaked at 43,771 shares and was pulled at 12:05:36. The $10.00 wall peaked at 44,946 shares at 11:47:29, about 4.7% of the float. At 11:48:07 shares traded at $10.00. In under a second, 42,117 shares traded at exactly $10.00 and the wall was gone. It wasn't pulled. A buy order swept 74,097 shares from $9.93 to $10.48 across 52 price levels.

At 11:48:39 it was halted. It reopened at 11:53:39 at $10.72.

Three more halts, each reopening higher

From 11:54 to 12:39 it chopped between $10.37 and $12.44. A bid wall sat at $10.00 from 12:15, peaking at 41,440 shares at 12:24.

At 12:40:21 a buy sweep of 57,941 shares ran from $11.98 to $12.31. It was halted at 12:40:51. During that halt, a bid wall formed at $10.70 at 12:43. It reopened at 12:45:51 at $12.94. It was halted again at 12:47:39 and reopened at 12:52:39 at $15.00.

It ran to $18.81 by 1:02 p.m. At 1:03:11 it was halted a fourth time since the $10 wall. It reopened at 1:08:11 at $19.05. By 1:09 p.m. it had hit $21.74.

The drop from $21.74

It did not hold. At 1:15:34 p.m. it was halted again, with the 1:15 candle at $17.97. It reopened at 1:20:34 at $18.00. At 1:25 p.m. it touched $16.80, down 23% from $21.74. At 1:52 p.m. it touched $15.59.

From 2:00 to 3:26 p.m. it stayed between $15.87 and $19.02. At 2:43:46 a sell order swept 42,928 shares from $17.82 down to $16.50 across 113 levels.

The 3:27 p.m. news and the run

At 3:27 p.m. Benzinga ran: “Autonomix Stock Skyrockets After Obtaining Key Cancer Tech Patent”. The 3:27 candle went from $17.73 to $19.44. By 3:28 it reached $19.62, and at 3:28:20 it was halted.

It reopened at 3:33:20 at $19.98, with a 68,245-share print. It ran to $21.98 and was halted again at 3:33:56. This one lasted ten minutes. It reopened at 3:43:56 at $23.00.

It hit $24.66, the high of the day, in the 3:44 minute. At 3:44:40 it was halted (a volatility pause), with the last trade at $20.70. It reopened at 3:49:40 at $19.75, 5% below where it stopped. Within the 3:49 minute it was down to $18.00.

The close and after hours

It came back once more. At 3:53 p.m. it pushed to $20.88, a lower high under the $24.66 top. It closed the regular session at $19.50, up 434% on the day.

In the 9:30 to 4:00 session, 40.7 million shares traded: the float changed hands about 43 times. Counting pre-market and after hours, the day's total was 53.2 million, and the volume was 22 times normal. It was halted 11 times.

After hours it hit $21.70 at 4:41 p.m. Then it fell, with a sharp drop at 5:19 p.m., to $13.56 by 5:50 p.m., down 38% from the after-hours high.

What to take from it

• On this day, both big ask walls were taken out. The $7.00 and $10.00 walls each went in about a second, and the stock kept going after both.
• In the three fills shown here, buying right after a wall break or halt reopen cost more than the screen said. Five thousand shares cost $645 to $1,918 over the screen, because few shares were offered at the screen price. Not every reopen was like that: at 9:36:31 the same order cost nothing extra.
• After the top, the next push stopped lower, and the after-hours high stopped lower too. $24.66 at 3:44 p.m., $20.88 at 3:53 p.m., $21.70 at 4:41 p.m., then $13.56 by 5:50 p.m.

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