Before Avis Became a Massive Short Squeeze, Reddit Mentions Jumped 1,200%

April 21, 10:11 am

Avis (CAR) has turned into one of the market's most explosive stocks. Shares surged more than 23% on Monday alone, climbed again on Tuesday, and pushed to fresh highs as short sellers scrambled to get out of the way.

The scale of the move is hard to ignore. In the last week, Avis has gained roughly 60%. Over the last month, the stock has climbed more than 500%. Few rallies move this far, this fast, without something much bigger happening under the surface.

We picked up one early sign before the squeeze fully took over. On April 10, we notified members that Reddit mentions for Avis had jumped 1,200% above the daily average. An investor who bought shares at the April 10 close of $299.94 would have been up roughly 120% by April 21, when Avis was trading around $661.

Avis stock went vertical

Once Avis started moving, the rally quickly became one of the most dramatic market events of the month. Trading halts followed, volatility surged, and the stock became a magnet for both short covering and momentum buying.

That is how short squeezes feed on themselves. The stock rises, short sellers buy shares back to close positions, that buying drives the stock even higher, and the next group of short sellers comes under pressure. When momentum traders recognize the setup, the move can accelerate even more.

Reddit attention surged before the biggest part of the move

Social momentum does not guarantee a breakout, but it can show where attention is building before price action reaches full intensity. In Avis, the conversation spiked before the stock became one of the market's biggest stories.

The chart below shows how Reddit mentions evolved through April and how quickly the discussion level changed around Avis.

Why the squeeze became so violent

According to Reuters, about 86.2% of Avis's free float was sold short as of Monday. That is an extreme short-interest figure, and it left the stock highly exposed once buying pressure started to build.

Reuters also reported that SRS Investment Management and Pentwater Capital Management together controlled more than 71% of the company's outstanding shares. That concentrated ownership tightened the setup even further by reducing the amount of stock readily available for borrowing and trading.

Put those pieces together and the result is clear: a stock with heavy bearish positioning, limited supply, and rapidly rising attention can move much farther than most investors expect. Reuters reported that short sellers have lost about $4.09 billion this month as the squeeze intensified.

The move ran far ahead of the business backdrop

Avis did not enter this rally on the back of a major business turnaround. In its fourth-quarter and full-year 2025 earnings release, the company reported $2.7 billion in fourth-quarter revenue and a net loss of $856 million. For the full year, Avis reported $11.7 billion in revenue and a net loss of $995 million.

Reuters noted that Barclays downgraded the stock to underweight from equal-weight, while Deutsche Bank also cut its rating during the rally. That says a lot about the nature of this move. The stock price surge was driven by positioning, forced buying, and momentum much more than a sudden improvement in fundamentals.

What investors can take from the Avis move

When social momentum starts building around a heavily shorted stock, investors should pay attention. It does not guarantee a squeeze, but it can highlight the early conditions that make one possible.

That is why we track these signals and generate Reddit Stock alerts. In Avis, the Reddit spike came early, the stock followed, and the move quickly turned into one of the most dramatic short squeezes of 2026.

The bottom line

Avis has gained about 60% in the last week, more than 500% in the last month, and roughly 120% since our April 10 Reddit alert. That is an extraordinary move in a very short period of time.

For investors, the lesson is not that every Reddit spike becomes a monster winner. It is that unusual attention around a heavily shorted stock can matter a lot when the setup is already fragile. Avis is the latest example.

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Disclaimer: The information provided is for educational and informational purposes only and should not be construed as financial or investment advice. All investments involve risk, and you should conduct your own research or consult a qualified professional before making any investment decisions.

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