AMIX Ran +912% on a 526K Float: How AMIX's Filings Revealed What Was About To Come (Forensic Filing Analysis)

TLDR

• AMIX surged +912% for the entire move ($2.44 on 2026-07-28 to $24.68 on 2026-08-04) and +275% close-to-close this week ($3.25 → $12.20, 2026-07-31 to 2026-08-06) after a broad new U.S. patent grant hit a micro-float that had already been primed by a warrant inducement and a fresh shelf. The tradeable float is 526,438 shares.
• Market cap sits at $12,700,000 with an enterprise value of $7,600,000 — short interest 6.5%, institutional ownership just 1.8%.
• The filing chain that primed the run: an S-3 shelf and an 8-K both filed 2026-07-28, a 424B5 prospectus supplement 2026-07-31, and an EFFECT order 2026-08-05.
• On 2026-08-04, AMIX traded 120,007,906 shares — roughly 228x its 526,438-share float — printing a regular-session close of $19.50 (+262.5%) and a full-day high of $24.68.
• The full-day MFE on Aug 4 was +617.4% (pre-market low $3.44 to high of day $24.68). A $10,000 position timing that window returned $71,740; the more realistic open-to-close capture was +262.5%.

What Filings Told You AMIX Was Loaded Before the Run

A micro-float medical-device name with a live shelf, a fresh warrant inducement, and a stack of patent grants was structurally set to squeeze — and every one of those elements was visible in the filing record before Aug 4. Autonomix Medical (AMIX) carries a float of just 526,438 shares against a $12,700,000 market cap. When you pair a sub-1M float with a supply-constraining catalyst, price becomes a function of order flow, not fundamentals. That is exactly what the tape delivered.

AMIX filed 9 SEC filings in the last 90 days: a 10-K (2026-05-27), a 10-K/A (2026-06-15), an S-3 shelf and an 8-K (both 2026-07-28), a 424B5 (2026-07-31), several 8-Ks total (2026-07-28, 2026-07-15, 2026-07-10, 2026-06-24), and an EFFECT order (2026-08-05). Read in sequence, that is a company registering capacity, pricing paper, and getting a registration declared effective — all inside a two-week window that bracketed the explosive move.

This is the same structural setup we broke down in VRAX micro-float squeeze and ADVB micro-float squeeze on an 860K float: tiny tradeable supply, a fresh registration, and a catalyst that forces buyers to chase.

The Filing Timeline: S-3 to 424B5 to EFFECT

The canonical chain that primed AMIX was S-3 (shelf registration) → 424B5 (pricing supplement) → EFFECT (declared effective) — the textbook progression that tells you an offering is being set up and shares are about to become sellable. Here is the record with the price context alongside it.

The key read: the S-3 landed 2026-07-28, the exact session AMIX started to base higher off a $2.74 prior close, and the 424B5 pricing supplement followed just three sessions later on 2026-07-31. A shelf followed by a 424B5 in under a week is a company moving fast to monetize a registration. The EFFECT order on 2026-08-05 confirmed the paper was live — landing the day AFTER the +262.5% blow-off, which is the classic sequence: run first, register-effective second.

Separately, the news record shows AMIX entered into a $2.6 Million Warrant Inducement Priced At-the-Market Under Nasdaq Rules on 2026-07-14 (8-K, July 14). That inducement maps directly to the two new active warrant tranches on file (more on those below) and is the earliest financing spark in the data — two weeks before the tape ignited.

Share Structure Impact: Active vs. Completed Facilities

AMIX carries 8 active dilution facilities and 5 completed/historical ones — but the active overhang is smaller and more constrained than the raw count suggests. Separating the two is the whole forensic job here.

Active facilities (currently exercisable or drawable):

The two Series D warrant tranches (428,731 each at a $5.75 strike, agent Maxim) are the direct product of that July 14 warrant inducement. Once AMIX pushed through $5.75, both tranches — 857,462 warrants combined — went in the money, becoming exercisable dilution against a float of only 526,438 shares. That is a structural supply of new stock larger than the entire public float, and it is the single most important active overhang to respect on any continuation.

The February 2025 Shelf shows $4,908,477 remaining but carries a baby shelf restriction: price must exceed $78.52. AMIX has not traded within an order of magnitude of that level, so that shelf is effectively dormant — it cannot be tapped at current prices. The active ATM is small at $1,350,000 remaining. The August 2025 Lincoln Park SPA equity line has $15,000,000 of capacity, which is the largest at-will drawdown lever on the board.

Completed / historical (already raised — NOT current dilution): the February 2025 and August 2025 Ladenburg ATMs, Pre-IPO Warrants, the November 2025 Warrant, and the November 2024 S-1 Offering (status Priced, raised $9,000,000 across 1,376,287 shares). That S-1 is a closed raise — historical capital, not active overhang. Do not count it against the current dilution picture.

Price Action Context: How the Tape Traded the Chain

AMIX went from a sleepy sub-$5 base to a 120M-share blow-off in a single session, and the OHLC record shows exactly where the supply constraint broke. The run built quietly and then detonated on Aug 4.

The 2026-08-04 session is the whole story. Regular open $5.38, regular close $19.50 (+262.5%), full-day high $24.68, and 120,007,906 shares — roughly 228x the 526,438-share float. That is a mechanical squeeze on supply constraint: when a name turns over 228 floats in a day, there is no natural seller left and price gaps to whatever level induces holders to part with stock. The after-hours session gave it back, opening $19.46 and closing $14.67, and the next two sessions bled from a $13.62 open to a $12.20 close — the standard post-squeeze mean-reversion once the float unlocks and the effective registration (EFFECT, Aug 5) opens the door to supply.

The pre-run tell was 2026-07-29: 69,889,111 shares off a $2.76 prior close with the stock only closing +3.1%. That is enormous relative volume with a muted price response — accumulation and a liquidity test where market makers probed supply at the $4 level before the real move. When you see float-multiple volume with a flat close, the coil is being wound.

The Opportunity: Risk and the Pre-Offering Run

AMIX is both a dilution risk and a pre-offering-run opportunity, and the active facilities define the exact boundaries of each. The opportunity and the risk live in the same filings.

The opportunity: the S-3 (2026-07-28) → 424B5 (2026-07-31) sequence is the pre-offering-run pattern. Market makers and the company both benefit from a higher print before paper is sold, and on a 526,438-share float even modest buying pressure gaps the tape. A trader reading the S-3 the day it filed — the same session AMIX based off $2.74 — had a front-row seat to the coil. The realistic open-to-close capture on Aug 4 was +262.5% ($5.38 → $19.50); the full-day MFE from the $3.44 pre-market low to the $24.68 high was +617.4%. This is the same dilution-cycle mechanic we detailed in pre-offering runs and post-ATM fades.

The risk: the two Series D warrant tranches (857,462 combined at $5.75) are deep in the money above $12 and represent new supply larger than the float. The $15,000,000 Lincoln Park equity line is a standing drawdown lever, and the small $1,350,000 ATM can be tapped into strength. The February 2025 shelf is capped by its $78.52 baby-shelf floor and is not a near-term threat. The after-hours reversal on Aug 4 (close $14.67 vs. regular close $19.50) and the two-day fade to $12.20 are what warrant-holder and equity-line supply looks like when it meets an exhausted buyer base. Chasing a 228x-float session late is buying the exit liquidity for people who registered the paper.

Macro backdrop. The call is Small-Cap Leadership — small caps are outperforming large caps, which improves squeeze follow-through. The Russell 2000 (IWM) closed at $298.25, -1.6% from its 52-week high of $303.06, up +1.9% over 5 days. The S&P 500 (SPY) closed at $768.56 (+3.6% over 5 days), the Nasdaq 100 (QQQ) at $714.65 (+4.5% over 5 days), and the Dow Jones Industrial (DIA) at $538.19. When small caps lead, micro-float catalysts get funded harder — AMIX was one of 25 runners of at least +50% in the small-cap universe last week, a runner-heavy tape running well above the ~6.5 runners-per-week 4-week baseline.

How to Find These Setups With SNACS

You find the next AMIX by screening for the exact structural fingerprint — micro float, fresh shelf/424B5, and a volume-multiple session — before the catalyst prints. Here is the concrete workflow.

1. Scanner filters. In the SNACS scanner, set float under 5M shares, add the Dilution Alerts column, and sort by RVOL descending. AMIX would have surfaced on 2026-07-29 when it turned 69,889,111 shares — a massive relative-volume reading — while barely closing green. That flat-close-on-huge-volume signature is the accumulation tell. Save the filter as a named preset and link it to a Dynamic Watchlist so any new micro-float name crossing your RVOL threshold auto-populates in real time.

2. Ticker details page. Click any ticker to open its ticker details page, where the dilution risk panel shows active shelf, ATM, warrant, and equity-line facilities alongside recent filings and news — all without leaving the scanner. For AMIX that panel surfaces the $5.75 Series D warrants, the $15,000,000 Lincoln Park line, and the $78.52 baby-shelf floor in one view.

3. SEC research tool. In SEC research, the Dilution Snapshot lists active facility counts, shares at risk, and the lowest exercise price, with a baby-shelf threshold indicator. Ask the AI Chat plainly — "what active dilution facilities does AMIX have and what are the warrant strikes" — and it reads the filings back to you. The Filing Browser lets you pull the S-3, 424B5, and EFFECT chain in sequence so you can confirm an offering is being set up.

4. Playbook Builder. Build a multi-step setup in the AI Playbook Builder: step one historical context (float under 1M), step two the trigger (S-3 or 424B5 filed in the last 5 sessions), step three the volume confirmation (float-multiple RVOL). Live matching drops a star indicator on the scanner row the moment a ticker matches the pattern.

Across the small-cap universe there are approximately 5,800 active warrant facilities, ~3,100 active shelves, ~2,100 active ATMs, ~1,400 convertible notes, ~800 convertible preferreds, ~600 S-1 offerings, and ~500 equity lines (approximate counts; exact totals withheld). The edge is not knowing they exist — it is reading which are ACTIVE, which are capped, and which are already spent, the way we just did for AMIX.

What to Watch Next

Watch whether AMIX holds above the $5.75 Series D warrant strike or fades back under it as effective-registration supply meets a thinner buyer base. The stock closed 2026-08-06 at $12.20 on 3,164,699 shares — a fraction of the 120M peak-session volume, which is the volume-regime contraction you expect after a squeeze exhausts. The EFFECT order (Aug 5) means shares can now be sold, and the equity line plus the two in-the-money warrant tranches are the supply to respect. For continuation traders, the setup is now a battle between a still-tiny 526,438-share float and newly-unlocked paper — the same tension that resolved to the downside on Aug 5 and Aug 6. Track the filing browser for any 424B5 follow-through or an ATM usage 8-K, and cross-reference the trailing runner map in FCUV and AMIX trailing five-session runner map to see which names are still coiling.

FAQ

What was AMIX's total percentage move?

AMIX moved +912% for the full run, from $2.44 on 2026-07-28 to $24.68 on 2026-08-04, and +275% close-to-close over the five trading days from $3.25 to $12.20. The single biggest session was 2026-08-04, when the regular session closed +262.5% at $19.50 with a full-day high of $24.68.

Why did AMIX squeeze so violently?

AMIX squeezed because a 526,438-share float met a session that traded 120,007,906 shares — roughly 228x the float. With that little tradeable supply, buying pressure has nowhere to source stock, so price gaps to whatever level induces holders to sell. A broad new U.S. patent grant on 2026-08-04 was the catalyst that triggered the demand.

What is a 424B5 filing and why does it matter?

A 424B5 is a prospectus supplement that prices an offering off an existing shelf registration — it means the offering terms are set and shares can be sold. AMIX filed its S-3 shelf on 2026-07-28 and the 424B5 pricing supplement on 2026-07-31, a fast sequence that signals a company moving to monetize a registration during a run.

How do I check SEC filings for dilution on a stock like AMIX?

Use the SNACS SEC research tool's Dilution Snapshot, which lists active facility counts, warrant strikes, and the lowest exercise price, plus a baby-shelf threshold indicator. For AMIX it surfaces $5.75 Series D warrants, a $15,000,000 Lincoln Park equity line, a $1,350,000 ATM, and a February 2025 shelf capped by a $78.52 baby-shelf floor.

What is a baby shelf restriction?

A baby shelf restriction limits how a company can use its S-3 shelf when its public float is small, sometimes requiring the stock price to exceed a stated threshold. AMIX's February 2025 Shelf shows $4,908,477 remaining but carries a price-must-exceed-$78.52 condition, so it is effectively dormant at current prices and not a near-term dilution threat.

Which AMIX facilities are actual dilution risk versus already spent?

The active risk is the two Series D warrant tranches (857,462 combined at a $5.75 strike), the $15,000,000 Lincoln Park equity line, and the $1,350,000 ATM. The November 2024 S-1 Offering — status Priced, $9,000,000 raised across 1,376,287 shares — is a closed historical raise and is not current overhang.

How could a trader have caught AMIX before the run?

The pre-run tell was 2026-07-29, when AMIX turned 69,889,111 shares off a $2.76 prior close but only closed +3.1% — enormous relative volume with a muted price response signals accumulation. Screening for float under 5M shares, sorting by RVOL, and flagging the S-3 filed 2026-07-28 would have surfaced the coil days before the +262.5% Aug 4 session.

What is MFE and what was AMIX's MFE on August 4?

MFE (Max Favorable Excursion) is the best possible trade from the day's low to high across all sessions. AMIX's full-day MFE on 2026-08-04 was +617.4%, from a $3.44 pre-market low to the $24.68 high of day; a $10,000 position timing that window returned $71,740, while the realistic regular-session open-to-close capture was +262.5%.