① Recently, the speculative frenzy around meme stocks has made a strong comeback in the U.S. market;
② On Thursday, the small-cap stock Healthcare Triangle Inc. (HEALTHCARE TRIANGLE, INC.(HCTI.US)) became the most actively traded stock on U.S. exchanges;
③ That day, shares of this little-known healthcare IT company more than doubled to just over 5 cents, with trading volume exceeding 3 billion shares.

Recently, the speculative frenzy around meme stocks has made a strong comeback in the U.S. market.

On Thursday, the Nasdaq-listed small-cap stock Healthcare Triangle Inc. became the most actively traded stock on U.S. exchanges. This is yet another example of how retail investors are driving extreme volatility across the stock market.

That day, shares of this little-known healthcare information technology company more than doubled to just over 5 cents, with trading volume exceeding 3 billion shares. Data compiled by media showed this accounted for roughly 15% of the total trading volume on U.S. exchanges that day.

Shares of Healthcare Triangle Inc. opened up as much as 138% and closed 115% higher. However, there was no apparent positive catalyst to explain this astonishing surge.

The total value traded in the stock that day was approximately $150 million, nearly seven times the company's market capitalization.

Healthcare Triangle Inc. is a company focused on healthcare information technology. Founded in 2019 and headquartered in California, it primarily provides cloud services, data science, and other solutions for the healthcare and life sciences industries.

Meme stocks refer to those stocks that attract massive investor attention and concentrated buying due to social media hype, internet culture, and other factors, leading to extreme price volatility that often detaches from the company's fundamentals.

In the U.S. stock market, low-priced stocks with high levels of short interest often become targets for coordinated buying by retail investors. This is because they represent lower capital requirements and higher potential returns, and can create so-called "short squeeze" scenarios by going against short-selling institutions.

Recently, the meme stock mania has triggered surges in multiple speculative stocks, including Kohl's Corp. (which has seen declining revenues for years), the real estate tech company Opendoor Technologies (OpenDoor Technologies, Inc.(OPEN.US)) (which once faced delisting risks), and donut chain Krispy Kreme (Krispy Kreme, Inc.(DNUT.US)).

Currently, the number of stocks joining the meme stock frenzy is still increasing. However, it's crucial to be aware that these rebounds are often highly unstable and very short-lived.

This raises the market question: Can these companies currently capitalize on their surging stock prices to raise new capital, like the meme stock founders AMC Entertainment (AMC Entertainment Holdings, Inc. Class A(AMC.US)) and GameStop (GameStop Corp. Class A(GME.US)) did in 2021?