Top Stock Movers Sept 18, 2026: IMCC, REFR, GIPR
Five stocks dominated today's tape: IMCC exploded 140.8%, REFR jumped 68%, and GIPR, ZTG, and NCPL all posted massive gains. Here's what drove each move.
IMCC — IM Cannabis Corp. (+140.8%)
IM Cannabis Corp. closed up 140.8% at $4.19 on a staggering 62.6 million shares — nearly 19.5× its 20-day average volume of 3.2 million. For a company carrying a market cap of just $2.1 million, that volume is extraordinary and signals a crowd of speculative traders piling in rather than any large-scale institutional conviction.
Why it moved: No researched catalyst, confirmed headline, or earnings release is on file for today. The most recent SEC filings are neutral 6-Ks from late August and early September reporting routine foreign events. Reddit's r/pennystocks picked it up at rank #5 with two mentions — minimal, but enough to suggest the name was circulating in retail trading communities. IMCC also appeared in this morning's premarket movers recap, where it was already gapping significantly, meaning today's after-close print reflects a full-day continuation of that premarket surge. With no confirmed catalyst, this move appears momentum- and technically-driven, amplified by extremely thin liquidity.
The float is reported at 77.1%, but with a $2.1M market cap, the actual dollar value of tradeable shares is tiny — meaning even modest buy pressure can produce outsized percentage moves. Short interest stands at only 12,539 shares (0.1 days to cover), so a traditional short squeeze is not the driver here. The squeeze score of 26/100 confirms that. The stock opened with an 85.1% gap — a gap being the price jump between yesterday's close and today's open — and sustained buying through the session.
StockSetups' scan flagged an inverted hammer candlestick, a pattern that can signal a potential reversal after a downtrend but in this context formed mid-surge, meaning caution is warranted. RSI hit 65 (approaching but not yet overbought), ADX at 43 signals strong trending momentum, and the moving average stack remains mixed. The conviction score is 38/100 and the overall grade is D, reflecting weak underlying trend structure. The stock sits 94.2% below its 52-week high, underscoring how deep in distress this name was before today's spike. Chasing a 140% move in a $2.1M market cap stock with no known catalyst is extremely high-risk.
REFR — Research Frontiers Inc. (+68.0%)
Research Frontiers closed up 68.0% at $0.65 on 88.75 million shares — roughly 19.4× its 20-day average volume of 4.6 million. The $22.6M market cap puts this firmly in micro-cap territory, where thin liquidity can translate small absolute dollar flows into huge percentage moves.
Why it moved: No researched catalyst or confirmed headline is on file for today's session. With no earnings release, no press release, and no SEC filing flagged, the catalyst here is unclear. This looks like a momentum- and technically-driven move, potentially connected to broader micro-cap speculation in the session. The short-volume ratio of 55% — meaning more than half of today's volume was on the short side — is notable; heavy short-side participation during a surge like this can sometimes indicate short sellers being forced to cover losing positions, adding fuel to the rally.
Short interest is 431,999 shares with 2.8 days to cover (days to cover = short interest divided by average daily volume; higher readings mean shorts need more days to unwind). The squeeze score is 42/100 — modest, but the 2.8 days-to-cover reading is the highest in today's mover list, meaning there's more relative short positioning here than in the other names. A free float of 75% (the portion of shares available for public trading) is not unusually tight, but on a $22.6M market cap, volume of 88M shares represents substantial turnover.
StockSetups' technical read shows RSI at 76, which is in overbought territory — a warning that buying momentum may be stretched. ADX at 17 is surprisingly low, suggesting the trend lacks strong directional conviction despite the day's price action. The gap was a negligible 0.1%, meaning this was a sustained intraday rally rather than a gap-and-go. Conviction score is a solid 64/100 with a grade of B, the strongest fundamental technical grade in today's list alongside NCPL. The stock is still 72.5% below its 52-week high, so even after today's move, REFR remains in long-term distress.
GIPR — Generation Income Properties, Inc. (+64.3%)
Generation Income Properties closed up 64.3% at $0.72 on 260.9 million shares — about 6.5× its already-elevated 20-day average of 40.3 million shares. This micro-cap REIT carries a market cap of just $1.3 million, making it one of the smallest publicly traded real estate companies on US exchanges.
Why it moved: Today's headlines point to a clear catalyst. According to Yahoo Finance, Generation Income Properties entered into a warrant exercise transaction for $4.3 million in gross proceeds — a capital raise executed today, September 18. For a company with a $1.3M market cap, $4.3M in new capital is transformative, and the market reacted accordingly. This also needs context from earlier in the week: GIPR appeared in this morning's premarket movers recap and Nasdaq granted the company an extension for bid-price compliance on September 16 (per Investing.com), meaning the stock had been at risk of delisting. The capital raise likely alleviates some of that compliance pressure, explaining the sharp positive reaction.
The stock gapped a massive 239.0% at the open — one of the largest gap openings in today's mover list — before settling to close up 64.3%, indicating significant profit-taking and volatility intraday. That gap represents the price difference between Thursday's close and today's open price; a gap this wide reflects overwhelming overnight demand. For more on how these gap moves play out, see our guide on the gap-and-go setup.
Smart-money signals are mixed: one insider buy of $4K worth of shares on September 16 (from HRT Financial LP) and a 13D/G stake disclosure showing a largest stake of 15.6% — both relatively minor signals. The squeeze score is 31/100 with essentially zero days to cover. StockSetups' scan shows RSI at 60 (not yet overbought) and ADX at 35 (solid trend strength), but the MA stack is mixed and the conviction score is 38/100 (grade D). The stock remains 96.1% below its 52-week high. GIPR had also appeared in September 16's top movers recap, confirming a pattern of recurring volatility in this name.
ZTG — Zenta Group Co Ltd (+52.1%)
Zenta Group closed up 52.1% at $1.82 on 70.6 million shares — about 5.7× its 20-day average volume of 12.4 million. The $21.1M market cap puts this in micro-cap territory, and the Consumer Discretionary classification reflects its operational profile as a foreign issuer filing 6-Ks with the SEC.
Why it moved: Headlines from September 16 explain the underlying catalyst: multiple sources, including finance.biggo.com and Quiver Quantitative, reported that Zenta Group surged after completing an AI firm acquisition. A September 16 headline specifically described a 230% single-day move tied to that deal closing. Today's +52.1% move appears to be a continuation of that acquisition-driven momentum, with traders carrying the theme forward into a subsequent session. ZTG was also the top mover in September 16's after-close recap, confirming this is a multi-day story.
The acquisition of an AI-focused business is a high-attention theme in current markets, which helps explain sustained volume. A 17.1% gap at today's open suggests overnight demand persisted from the prior day's excitement. The short-volume ratio is 55%, meaning shorts are active — but with only 0.2 days to cover and a squeeze score of 36/100, a mechanical short squeeze is unlikely to be the primary driver.
StockSetups gives ZTG a remarkable conviction score of 100/100 and an A+ grade — the highest in today's list — reflecting a technically ideal setup in the scan's model at the time of detection. RSI is at 50, a neutral reading suggesting the price is not extended relative to recent average moves. ADX at 19 points to a modest trend. The free float is 75%, and the stock sits 82.6% below its 52-week high. A conviction score of 100 reflects pattern quality, not a guarantee of continued upside — always manage risk accordingly.
NCPL — Netcapital Inc. (+31.5%)
Netcapital Inc. closed up 31.5% at $0.74 on 134.7 million shares — roughly 2.6× its 20-day average volume of 51.3 million. The $5.8M market cap is micro-cap, and Netcapital operates in the fintech/crowdfunding space under the Financials sector classification.
Why it moved: No catalyst headline or confirmed news release is on file for today. The most notable recent SEC filing is a bearish-flagged 8-K disclosing a delisting notice from August 28, followed by management-related 8-Ks in early September. With no positive catalyst confirmed, this looks like a momentum-driven move, potentially tied to retail trading activity — NCPL ranked #2 on r/pennystocks today with three mentions, the highest Reddit visibility of any stock in today's list.
What makes NCPL particularly interesting from a structural standpoint is its free float of just 46.9% — the lowest in today's mover list. A low float means fewer shares are available to trade publicly; when volume surges (as it did today), price can move sharply because there are limited shares to absorb demand. This is the core mechanic of a low-float squeeze. The squeeze score of 62/100 is also the highest of the five stocks today, and short interest of 1.65 million shares is meaningful relative to the float, though 0.0 days to cover suggests shorts are not trapped at current volume levels.
StockSetups' scan shows RSI at 62 and ADX at 35 — both suggesting a trend with some momentum still behind it. The MA stack is mixed, but the technical rank of 96/100 is the strongest in today's group, and the conviction score is 66/100 with a grade of B. The stock gapped 22.5% at the open and extended through the session. NCPL is 70.8% below its 52-week high, and the pending delisting risk from the August 8-K is a significant fundamental overhang that traders should not ignore.
The bottom line
Today's five biggest gainers — IMCC (+140.8%), REFR (+68.0%), GIPR (+64.3%), ZTG (+52.1%), and NCPL (+31.5%) — share a common thread: they are all micro-cap or nano-cap stocks with thin liquidity, where relatively small dollar flows can produce enormous percentage moves. GIPR had a confirmed catalyst in its $4.3M warrant exercise transaction; ZTG's move extended an acquisition story from earlier in the week. For IMCC, REFR, and NCPL, the specific catalyst for today's move is unclear from available data, and momentum and retail speculation appear to be the primary drivers.
The risks here are real and immediate. Stocks that gain 30–140% in a single session frequently give back a large portion of those gains in the days that follow, especially when moves are driven by momentum rather than fundamental news. Chasing extended names — buying after a 64% or 140% gap-up — is one of the highest-risk actions a trader can take. Patterns fail, squeezes reverse, and catalysts get reinterpreted. Always size positions appropriately, use stop-losses, and do your own due diligence before acting on any of these names.
StockSetups scans the full ~12,300-stock US universe after every close, detecting confirmed chart patterns, computing conviction and squeeze scores, and sorting setups into actionable lanes — so you can find the next mover before it moves. Check back each evening for the latest recap.
This article is educational only and does not constitute financial advice or a recommendation to buy or sell any security.
Frequently asked questions
Why is IMCC stock up today?
IMCC surged 140.8% on September 18, 2026, on nearly 20x its average volume. No confirmed catalyst is on file — the move appears momentum-driven, amplified by the stock's extremely thin market cap of $2.1M and low liquidity. It also appeared in the morning's premarket movers recap, suggesting the gap carried through the full session.
Why is GIPR stock up today?
Generation Income Properties jumped 64.3% after announcing a warrant exercise transaction that raised $4.3 million in gross proceeds — a transformative amount for a company with a $1.3M market cap. Nasdaq also recently granted the company a bid-price compliance extension, and the capital raise may ease delisting concerns.
Why is ZTG stock up today?
Zenta Group's +52.1% close on September 18 appears to be a continuation of its AI acquisition-driven rally from September 16, when the stock surged after completing the purchase of an AI firm. Today's move extended that momentum into a subsequent session.
What is a low-float short squeeze?
A low-float stock has very few shares available for public trading. When a stock like this attracts heavy volume, the limited supply of shares can cause prices to spike sharply. If short sellers (traders betting the price falls) are caught in that spike, they may be forced to buy shares to cover their losses, adding more fuel to the rally — that's a short squeeze. NCPL, with a float of just 46.9% and a squeeze score of 62/100, had the most squeeze-like profile of today's movers.
Why is REFR stock up today?
Research Frontiers jumped 68% on September 18, 2026, with no confirmed news catalyst on file. The move appears momentum-driven, with volume running nearly 20x the 20-day average. Short interest of 2.8 days to cover — the highest in today's group — may have contributed as shorts were forced to cover during the rally.
Produced with AI assistance and published under the StockSetups editorial guidelines.
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