Biggest Small-Cap Gaps August 17, 2026: Float & Dilution, Sourced
Direct answer: On August 17, 2026, IPST surged +339% intraday (opening gap +260%), IVF +213% (+133% gap), TRUG +105% (+63% gap), PFSA +88% (+353% gap), and YYAI +50% (+2413% gap). All five tickers carry floats under 2 million shares and attracted exceptional volume—up to 72 times the float for IPST—illustrating how a small pool of available shares mechanically amplifies price moves.
Snapshot of the August 17, 2026 Movers
Monday, August 17, 2026 saw five small-caps post triple-digit intraday gains. The table below summarizes the measured data:
| Ticker | Name | Max Intraday Gain | Opening Gap | Float (M) | Close Price ($) | Volume |
|---|---|---|---|---|---|---|
| IPST | IP Strategy Holdings, Inc. | +339% | +260% | 0.72 | 7.37 | 51,807,548 |
| IVF | INVO Fertility, Inc. | +213% | +133% | 1.79 | 1.521 | 57,275,917 |
| TRUG | TruGolf Holdings, Inc. Class A | +105% | +63% | 1.11 | 1.545 | 35,947,925 |
| PFSA | Profusa, Inc. | +88% | +353% | 0.53 | 4.5399 | 1,559,918 |
| YYAI | AiRWA Inc. | +50% | +2413% | 1.05 | 1.23 | 2,893,532 |
Source of figures: FloatVerify database, consolidating SEC filings (forms 10-K, 10-Q, S-1) and real-time market feeds. Floats shown reflect the latest available update at session time.
The Float: Why a Small Pool Amplifies Everything
Float is the number of a public company's shares available for trading. It excludes shares held by insiders, employees under lock-up, long-term institutional holders, and affiliated entities. The float is the pool of shares that traders and public-market investors can freely buy or sell.
On a gapping small-cap, a float under 2 million shares is enough for moderate trading volume to generate major price swings. The mechanics: if 50 million shares change hands in a day (IPST's case) while the float is only 0.72 million, each share in the float traded roughly 70 times. This extreme rotation signals concentrated buying (or selling) pressure on a tiny inventory. The price jumps or drops disproportionately.
IVF illustrates the same dynamic: 57.3 million shares traded on a 1.79 million float, roughly 32 turns. Compare that to a large-cap with a 100 million share float and 5 million daily volume (5% turnover). Same buying pressure, far smaller impact.
The Opening Gap: Off-Hours Pressure Unleashed
The opening gap measures the distance between the prior session's close and the current session's open. The August 17 gaps are spectacular:
- YYAI: +2413% gap. The stock opened at roughly 25 times its prior close.
- PFSA: +353% gap.
- IPST: +260% gap.
These spreads reflect order accumulation during the off-hours period (pre-market) or, occasionally, a significant announcement between sessions—press release, SEC filing, quarterly result. However, no specific catalyst is documented here for these five tickers: the data provided mention no corporate event. The origin of the buying pressure remains undocumented in this summary.
A large gap can fill during the session ("gap fill") if buying pressure fades and sellers regain control. Conversely, a gap can widen if momentum persists. YYAI, despite a +2413% gap, closed the session at only +50%—partial fill.
The SSR Rule: Temporary Short-Sale Brake
Stocks experiencing such violent moves frequently trigger the Short Sale Restriction (SSR), a safeguard under the SEC's Regulation SHO. SSR activates automatically when a stock drops 10% or more from its last closing price. Once activated, SSR remains in force for the rest of the day and the following session, prohibiting short sales at the bid. Only sales at the ask or above are permitted, limiting downward pressure.
On volatile small-caps like the August 17 movers, SSR can activate multiple consecutive days if swings remain large. If IPST drops 15% the next day, SSR will reactivate for two more days. The rule aims to prevent uncontrolled downward spirals. It does not prevent declines from long-position selling.
Volume: The Volatility Engine
Trading volume is the other key variable. Observe the volume-to-float ratio for each of the five tickers:
- IPST: 51.8M / 0.72M ≈ 72 times the float
- IVF: 57.3M / 1.79M ≈ 32 times the float
- TRUG: 35.9M / 1.11M ≈ 32 times the float
- PFSA: 1.56M / 0.53M ≈ 3 times the float
- YYAI: 2.89M / 1.05M ≈ 3 times the float
IPST, IVF, and TRUG show turnover between 30 and 72 times the float—exceptional even for small-caps. PFSA and YYAI, despite huge opening gaps, saw more contained volume (3 times the float). Their moves resulted more from an initial imbalance than from continuous session-long flow.
High volume reflects several simultaneous dynamics: new buyers entering (retail or short-term institutional), early holders exiting (profit-taking), day-trader activity, and arbitrage. The higher the volume relative to the float, the greater the volatility.
The Float: A Dated, Evolving, Sourced Figure
The float is not a constant. It evolves with every dilution or buyback event:
- New share issuance (public offering, private placement, warrant exercise, convertible-bond conversion): increases the float.
- Share buyback or extended lock-up agreement: reduces the float.
Small-cap biotechs, fintechs, and other capital-intensive sectors frequently resort to dilutive fundraising. The float can change in a matter of weeks. Always check the date of the float figure before using it in analysis.
Where to find the float?
- SEC filings: forms 10-K (annual report), 10-Q (quarterly report), S-1 (IPO registration), and their amendments. The float is derived from outstanding shares minus restricted shares.
- Financial data platforms: Bloomberg, FactSet, FloatVerify, etc., compile this information and update it regularly. Favor sources that show the last-update date.
FloatVerify stands out by displaying divergences between sources (the "source split"): when two SEC filings or two databases disagree, the tool presents both figures with their respective dates, rather than a single falsely certain number. This transparency lets you measure uncertainty and trace back to primary documents.
Recap
| Point | Takeaway |
|---|---|
| Biggest gainer | IPST +339% intraday, on a 0.72M float and 51.8M volume (72 times the float turnover). |
| Largest gap | YYAI +2413% gap, though total intraday gain was +50% (partial fill during session). |
| Common mechanism | Low float (0.53 to 1.79M) + high volume = mechanical amplification of price moves. |
| SSR rule | Activates automatically on a drop ≥10%, limits short sales for two days. |
| Float source | SEC filings (10-K, 10-Q, S-1), data platforms. The float evolves with every dilution or buyback; check the date. |
| Catalyst | No specific event documented for these five tickers in the data provided. |
FAQ
What were the biggest small-cap gaps on August 17, 2026?
IPST posted +339% intraday (gap +260%), IVF +213% (gap +133%), TRUG +105% (gap +63%), PFSA +88% (gap +353%), and YYAI +50% (gap +2413%). These five stocks represent the most notable moves of the session among low-float US small-caps.
Why does a low float amplify price moves?
The float is the number of shares available for public trading. When it's low (under 2 million shares), high trading volume creates concentrated buying or selling pressure on a small pool of shares, mechanically magnifying price swings. The same order flow moves the price more on a small float than on a large one.
Where can I find a stock's float?
The float is disclosed in SEC filings, particularly forms 10-K, 10-Q, S-1, and their amendments. Market data platforms compile this information, but the float changes with every share issuance (dilution) or buyback. Always check the date of the figure to know if it's still current.
What is the SSR rule and why does it appear on these tickers?
The Short Sale Restriction (Regulation SHO) activates automatically when a stock drops 10% or more from the prior close. It bans short sales at the bid for the rest of the day and the following session, limiting downward pressure. On volatile small-caps, SSR can trigger multiple days in a row.
Are these small-cap surges buying opportunities?
FloatVerify makes no recommendations. The observed moves are measured facts (float, volume, price change), not buy or sell signals. Low-float small-caps exhibit extreme volatility and elevated dilution risk. Any investment decision must rest on a complete analysis tailored to your risk profile.
Sources
- SEC EDGAR – Regulatory Filings Database
- Regulation SHO (Short Sale Restriction), SEC: sec.gov/rules/final/34-50103.htm
- Forms 10-K, 10-Q, S-1 and amendments (available on EDGAR for each issuer)
- FloatVerify database (consolidation of SEC filings and real-time market feeds)
See the float, sourced and dated, on FloatVerify.
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.
The float, sourced. The doubt, shown.
FloatVerify shows the float, dilution and cash burn of US small-caps — every number linked to its SEC filing.
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