Biggest Small-Cap Gaps on 2026-09-15: Float and Dilution, Sourced

Direct answer: On 2026-09-15, VEEA (Veea Inc.) posted the biggest small-cap move at +217% intraday with an opening gap of +89%, on a float of 55.12 million shares and volume of 154 million. MYSZ (My Size, Inc) followed at +96% intraday with a +43% gap, on a 4.82 million float and 12.4 million volume. These numbers illustrate the mechanics of low-float small-caps under massive volume pressure.

A Session of Extreme Volatility

The September 15, 2026 session produced two spectacular moves. VEEA and MYSZ both gapped hard at the open, then pushed higher intraday, with gains exceeding 90%.

These setups are typical of low-cap, limited-float tickers. On a small-cap that gaps big at the open, first-hour volume often sets the tone: if rotations stack with more buyers than sellers in the book, each cycle pushes price up another notch. That's a mechanical observation, not a prediction.

No specific catalyst is established here for these moves. We focus on reading the numbers — float, volume, price — and their technical meaning.

Session Overview: 2026-09-15

Two tickers dominated the leaderboard that day. Their float and volume profiles are wildly different:

Ticker	Name	Opening Gap	Intraday High	Float (M)	Close Price ($)	Volume
VEEA	Veea Inc.	+89%	+217%	55.12	5.695	154,149,578
MYSZ	My Size, Inc	+43%	+96%	4.82	2.31	12,413,696

Float figures come from the FloatVerify database, which aggregates the most recent SEC filings (10-Q, 10-K, S-1) and cross-checks them against observed market volume. Float is dated: it reflects the state of publicly available shares at a point in time, before any new dilution or unlock. A snapshot, not eternal truth.

VEEA: Massive Volume Against a Mid-Sized Float

VEEA (Veea Inc.) opened with an +89% gap from the prior close. Then continued climbing to +217% intraday. The float that day: 55.12 million shares. Not a micro-float under 5M, not a large-cap. Mid-sized for a small-cap.

Total session volume — 154,149,578 shares — represents roughly 2.8 times the float. Statistically, the entire float changed hands nearly three times during the day.

This massive rotation is a mechanical indicator. When buying pressure dominates, each rotation cycle can push prices higher. The escalation effect becomes visible on intraday charts: successive peaks, each high topping the previous. The $5.695 closing price reflects the final equilibrium point after those rotations.

No product announcement, no contract, no documented merger here. The move is described as a measured fact, without attribution of cause.

Short Sale Restriction (SSR)

VEEA ran hard that day. But any ticker that previously dropped more than 10% enters SSR (Regulation SHO, Rule 201). If VEEA had triggered SSR on a prior session, that would have banned short sales at the bid for the remainder of that session and the next. This changes the order book dynamic: short sellers must wait for someone to lift their offer instead of directly hitting the bid. On a post-gap bounce, this asymmetry can amplify volatility.

SSR data is published daily by the exchanges (Nasdaq, NYSE) and available on their official sites.

MYSZ: A Micro-Float Facing 2.5x Volume

MYSZ (My Size, Inc) presents a radically different profile. Float of 4.82 million shares. Roughly 11 times smaller than VEEA's. Opening gap: +43%. Intraday push carrying the max gain to +96%.

Volume of 12,413,696 shares. Roughly 2.6 times the float. Massive rotation, but on a much smaller base. When the float is under 5 million, even moderate volume (a few million shares) can generate significant price moves. The available supply thins out if few sellers are active in the book. Each market buy order can jump multiple price levels in one shot.

Closing price: $2.31. Observed volume: measured fact. No specific catalyst established in this analysis. We describe the technical setup as it appears in the data.

Understanding the Float/Volume Mechanics

Float is the number of shares actually available for public trading. Calculation: start with total outstanding shares, then subtract:

• Shares held by insiders (executives, founders, locked-up employees) disclosed in SEC forms (DEF 14A, Schedule 13D/G).
• Shares under contractual restriction (post-IPO lock-ups, standstill agreements).
• Shares held by affiliates subject to Rule 144 (limited sale).

This figure is mainly found in quarterly 10-Qs (Stockholders' Equity section) and S-1s (IPO or offering prospectus). It's a dated number. Every new issuance (ATM, PIPE, warrant conversion, option exercise) changes the float instantly.

Mechanical Effect of the Volume/Float Ratio

When volume exceeds the float, shares have changed hands multiple times. On VEEA, a 2.8× ratio implies each share in the float was, on average, traded nearly three times. If buying pressure dominates — more market buyers than sellers — each rotation can push prices higher. Cumulative movement.

Not a prediction. A mechanical observation of the order book. Extreme moves (+100%, +200%) generally occur when this ratio exceeds 2 or 3, especially if the float is low (under 10M). But it's not an absolute rule. Sometimes a 4× ratio produces a flat move if sellers are as aggressive as buyers.

The Role of Dilution in Float Evolution

Float is never static. It evolves with every dilution event:

• ATM (At-The-Market offerings): gradual share issuances over multiple sessions, declared in an 8-K or prospectus supplement. A company can sell 500,000 shares per day for a month without making noise.
• PIPE (Private Investment in Public Equity): share sale to an institutional investor, often followed by an S-1 to register resale. Float spikes when the lock-up expires.
• Warrant exercises: conversion into common shares, increasing the float by the number of converted warrants. If 10 million warrants become exercisable below market price, expect rapid dilution.
• Debt conversions: convertible notes transformed into shares, diluting existing shareholders. A $5 million debt convertible at $1 becomes 5 million shares if the stock runs to $3.

Each dilution increases the denominator. If a 5M float doubles to 10M, a holder of 500,000 shares drops from 10% to 5% of the float. Without selling anything. Mechanically.

Where to Track Dilution in Real Time

Dilutions are disclosed in 8-K forms (material events) and prospectus supplements (registered offerings). Investors track these filings on SEC EDGAR (sec.gov/edgar) to update their float calculations. Some tickers file an 8-K every week. Others go silent for quarters.

FloatVerify automates this tracking. Each new SEC filing is parsed, the float recalculated, and the update date displayed. When multiple sources (recent filings, third-party platforms) show different figures, FloatVerify displays a "source split" instead of hiding the divergence. A deliberate data-driven approach: show the uncertainty rather than arbitrarily picking a number.

Recap

Point	Takeaway
VEEA (2026-09-15)	+217% intraday, +89% gap, 55.12M float, 154M volume (2.8× ratio)
MYSZ (2026-09-15)	+96% intraday, +43% gap, 4.82M float, 12.4M volume (2.6× ratio)
Float	Number of publicly available shares, calculated from SEC filings (10-Q, S-1, DEF 14A), dated and subject to dilution
Volume/float ratio	Mechanical indicator: when > 2×, massive rotation, extreme moves possible if buying pressure dominates
Dilution	ATM issuances, PIPEs, warrants, conversions — each event changes the float, disclosed in 8-Ks and prospectuses
SSR	Short Sale Restriction (Regulation SHO) triggered after -10%, bans shorting at bid for 1.5 sessions

FAQ

What were the biggest small-cap gaps on 2026-09-15?

VEEA (Veea Inc.) posted the largest move at +217% intraday with an opening gap of +89%. MYSZ (My Size, Inc) followed at +96% intraday with a +43% gap. Their floats were 55.12M and 4.82M shares, respectively.

Where do small-cap float figures come from?

Float is calculated from SEC filings, mainly 10-Q, 10-K, S-1, and DEF 14A forms. You subtract insider holdings and lock-ups from total outstanding shares. These numbers are dated and change with every dilution or unlock event.

Why can volume exceeding the float create a large gap?

When volume surpasses the available float, shares have changed hands multiple times during the session. If buying pressure dominates, each rotation can push prices higher, creating a mechanical escalation effect visible on extreme moves.

What is Short Sale Restriction (SSR) for these tickers?

The SSR rule (Regulation SHO) triggers automatically when a stock drops more than 10% from the previous close. It bans short sales at the bid for the remainder of that session and the next, which can alter dynamics on post-gap bounces.

How does dilution affect a small-cap's float?

Every share issuance (ATM, PIPE, warrant exercise, conversion) increases outstanding shares and typically the float. A float that doubles can mechanically halve a shareholder's percentage ownership, which is why tracking SEC filings in real time matters.

Sources

• SEC EDGAR (U.S. Securities and Exchange Commission): sec.gov/edgar — 10-Q, 10-K, 8-K, S-1, DEF 14A, Schedule 13D/G filings for float calculation and dilution tracking.
• Regulation SHO (Short Sale Restrictions): sec.gov — Rule 201 on short sale restrictions.
• Nasdaq and NYSE: Daily SSR lists published by the exchanges (public files available on their official sites).
• FloatVerify: Proprietary database aggregating SEC filings in real time to calculate sourced and dated float, with display of source divergences ("source split").

See the float, sourced and dated, on FloatVerify.

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FloatVerify shows the float, dilution and cash burn of US small-caps, every number sourced and dated — and surfaces divergences between sources ("source split") instead of one falsely certain figure.

Disclaimer: FloatVerify is a data tool, not an investment advisory service. Nothing here is a recommendation to buy or sell. Data, not advice.