Top Stock Movers Today — August 14, 2026: Why MDXH, CAPR, HTFL, IMXI & UMAC Surged

MDXH — MDxHealth SA (+76.3%)

MDxHealth SA closed up 76.3% at $0.81, printing 247 million shares on the day — against a 20-day average of roughly 13 million. That is approximately 19× normal volume, a staggering surge in activity for a micro-cap diagnostics name with an $41.8 million market cap.

Why it moved: The catalyst was a pair of events disclosed after the previous close. MDxHealth reported Q2 2026 earnings on August 13, posting a net loss but beating revenue estimates and citing record sequential revenue growth. Simultaneously, the company raised $20 million through a direct share offering and announced it was exiting its Resolve business line — a strategic pivot that appeared to reassure investors about the path forward. The 424B5 prospectus filed with the SEC on August 13 confirmed the follow-on offering, which is technically a dilutive event, yet the market focused squarely on the revenue beat and the capital raise that funds the company's next phase.

Technical picture: RSI hit 80, firmly in overbought territory — a level that signals intense short-term buying pressure but also warns that a pullback can arrive without notice. The MA stack is mixed, the trend-template score sits at 2 out of 8, and StockSetups' conviction score is only 38/100 (grade D). The stock opened with a gap of +30.8% and is still 83.7% below its 52-week high, meaning today's move, large as it is, has barely scratched the surface of prior losses. The squeeze score of 37/100 is modest — short interest is under 1 million shares with just 1.4 days to cover — so this was not a short-squeeze story. It was a pure news-and-momentum event on a very thin float.

MDXH is a sub-$1 penny stock and among the highest-risk names on today's board. Penny stocks can give back large gains quickly, and a concurrent secondary offering means existing shareholders were diluted. r/pennystocks had light chatter (one mention, rank #82). Approach with extreme caution.

CAPR — Capricor Therapeutics, Inc. (+58.0%)

Capricor Therapeutics closed up 58.0% at $6.65 on 17.7 million shares — more than double its 20-day average of 7.8 million. Even after giving back some of its pre-market gains (headlines noted a 115% pre-market surge earlier in the session), CAPR still delivered one of the biggest single-day moves in the small-cap biotech space on August 14.

Why it moved: According to live web research sourced from GuruFocus and StocksToTrade, Capricor's stock surged on an FDA application amendment alongside newly published data in The Lancet and a significant analyst upgrade. The combination of a regulatory catalyst — an amendment that can change the timeline or scope of an FDA review — plus peer-reviewed clinical data landing in a top medical journal on the same day is a rare confluence that tends to drive outsized moves in clinical-stage biotechs. Multiple outlets noted the FDA countdown is a near-term binary event, which amplifies both the opportunity and the risk.

Technical picture: The most striking data point here is the squeeze score: 90/100. A short squeeze occurs when short sellers — traders who bet a stock will fall by borrowing and selling shares — are forced to buy back those shares as prices rise, accelerating the upward move. CAPR had 15.6 million shares sold short with 10.8 days to cover (meaning it would take more than 10 days of average volume to close all short positions). That is a large short burden, and the FDA/Lancet news lit the fuse.

The MA stack is bearish and RSI closed at 37, which is unusual for a stock that just surged 58% — it suggests the stock was deeply oversold heading into this event, and even after today's rally the longer-term downtrend has not been technically reversed. The gap at the open was +82.7%. Conviction sits at 28/100 (grade D). RS rating is 91, reflecting today's explosion in relative strength versus the broader market. Reddit buzz jumped from 1 mention to 18 in 24 hours (rank #48 on r/all-stocks), signaling rising retail attention. Binary FDA events remain highly unpredictable — outcomes can reverse gains overnight.

HTFL — HeartFlow, Inc. (+35.7%)

HeartFlow closed up 35.7% at $42.09 on 41.3 million shares — nearly 14× its 20-day average of 3.0 million. Among today's five movers, HTFL stands out for its size ($3.7 billion market cap) and its technical quality; this is not a penny-stock or low-float story.

Why it moved: HeartFlow reported Q2 2026 results after the August 13 close. Revenue surged 48% year-over-year, the company beat estimates, and management raised full-year 2026 guidance — a trifecta that investors in growth healthcare names reward aggressively. The earnings call highlighted momentum in its plaque analysis product. Raising guidance signals management's confidence that the growth is durable, not a one-quarter anomaly.

Technical picture: HTFL closed at a 52-week high — a technically significant milestone that indicates the stock has definitively broken out of any prior resistance. The MA stack is bullish, RSI is 84 (overbought but consistent with a strong gap-up breakout day), and the trend-template score is 4/8. The opening gap was +22.1%.

StockSetups' conviction score is 63/100 and the grade is B — the strongest technical read among today's five movers. The technical rank is 96/100. The squeeze score is 57/100 with 4.2 days to cover and 5.9 million shares short; some short covering likely added fuel to the rally. The RS rating of 85 confirms HTFL was already outperforming most stocks before today's blast higher. This is still an extended stock after a 36% single-day move, and buying strength at an all-time high after earnings carries its own risks — a "sell the news" reversal is always possible.

IMXI — International Money Express, Inc. (+24.7%)

International Money Express — known as Intermex — closed up 24.7% at $14.59 on 7.0 million shares, nearly 9× its 20-day average of 803,000. IMXI is a money-remittance company focused on Latin American corridors, and it operates in a market where M&A news can instantly reprice shares.

Why it moved: Yahoo Finance reported on August 14 that Western Union and Intermex provided an update on a pending acquisition — meaning IMXI is apparently a deal target. Acquisition announcements or deal-update headlines typically cause the target's stock to gap toward the expected deal price, which explains both the magnitude and character of today's move.

The StocksToTrade-detected candlestick pattern is a three outside up — a three-candle bullish reversal formation where a small bearish candle is engulfed by a larger bullish candle, followed by a confirming close even higher. This pattern signals that buyers wrested control decisively from sellers over the preceding sessions, and today's news provided the fundamental trigger that confirmed it.

Technical picture: RSI of 65 is elevated but not extreme. ADX of 50 indicates a very strong trending move in progress (ADX above 25 generally signals a trend; above 40 is considered very strong). The MA stack is mixed, and the trend-template score is 2/8, reflecting a stock that was in a longer-term downtrend before today. The stock is still 8.5% below its 52-week high. Conviction is 38/100 (grade D). The squeeze score is 49/100 with 5.1 days to cover — not a primary squeeze driver, but short covering into an acquisition update would add upward pressure. No Reddit buzz was noted in the data. M&A situations carry their own risks: deals can fall apart, terms can change, and regulatory hurdles can delay or block completion.

UMAC — Unusual Machines, Inc. (+24.7%)

Unusual Machines closed up 24.7% at $33.96 on 21.4 million shares — about 4.6× its 20-day average of 4.6 million. UMAC is a domestic drone-components maker, and it closed at a 52-week high, reinforcing a trend that has been building for months.

Why it moved: Per Stocktwits and 247WallSt reporting on August 14, Trump announced new tariffs targeting foreign-made drones, sending the entire domestic drone sector sharply higher. UMAC, RCAT, ONDS, AVAV, and KTOS all rose overnight on the news. Tariffs on imported drones directly benefit domestic manufacturers like Unusual Machines, which positions itself as a US-supply-chain alternative to foreign drone components — particularly Chinese-made parts. The company also reported Q2 2026 earnings on August 13 with an earnings call that highlighted capacity expansion ahead of Q3.

Technical picture: UMAC is the standout on technicals today. StockSetups' conviction score is a perfect 100/100 with a grade of A+ — the highest on the board. The trend-template score is 8/8, meaning UMAC satisfies every condition of the Minervini trend template (a rigorous set of moving average and relative-strength criteria popularized by champion trader Mark Minervini). The RS rating of 95 and technical rank of 98/100 confirm UMAC was already one of the market's strongest stocks before today. The stock sits at a 52-week high, the MA stack is bullish, RSI is 72, and the opening gap was +16.5%.

The squeeze score is 77/100, with 9.0 million shares short and 2.4 days to cover. Short sellers who were betting against the tariff beneficiary thesis faced a painful squeeze as price moved rapidly higher. Reddit buzz was strong — 54 mentions, rank #20 on r/all-stocks. An 8-K filed August 12 flagged an auditor-related event (flagged bearish in the data), a detail worth monitoring alongside the bullish price action. Even A+ setups can pull back after extended runs — a 25% single-day gain on top of an existing uptrend leaves the stock vulnerable to profit-taking.

The bottom line

Today's five biggest gainers — MDXH (+76.3%), CAPR (+58.0%), HTFL (+35.7%), IMXI (+24.7%), and UMAC (+24.7%) — were each driven by a concrete, identifiable catalyst: earnings beats, an FDA amendment, a pending acquisition update, and tariff-driven sector rotation into domestic drone makers. That is a good reminder that the biggest single-day moves almost always have a reason, even if the full magnitude is impossible to predict.

But a few honest cautions are worth keeping top of mind:

• Extended stocks are high-risk entries. A stock that has already surged 25–76% in a single session is, by definition, extended from any rational near-term base. Chasing strength the day after a gap is one of the most common mistakes retail traders make.
• Patterns and squeezes can reverse. Even a 90/100 squeeze score (CAPR) or a 100/100 conviction score (UMAC) does not guarantee the move continues. Short squeezes unwind. Earnings gaps fade. Tariff news gets absorbed.
• Biotech and micro-cap names carry binary risk. MDXH and CAPR can move violently in either direction on a single FDA decision or clinical data readout.
• M&A situations have deal risk. The Western Union / IMXI update is a pending deal — not a closed one.

Manage your risk, size positions appropriately, and always do your own research before trading any name. This recap is educational only and is not a recommendation to buy or sell any security.

StockSetups scans the full ~12,300-stock US universe after every close, detects confirmed chart patterns and candlestick signals, and sorts setups by conviction score, short-squeeze score, relative strength, and smart-money activity — so you can see movers like these the moment the session ends. Check yesterday's recap for more context: Top Stock Movers Today — August 13, 2026.