It's Wall Street bets form, and it posted a slimmer than expected quarterly loss.

American stock has joined the ranks of Gamestop, BlackBerry and AMC, whose shares have seen dramatic jumps as retail investors have piled into heavily shorted stocks, igniting a battle between small time traders and major Wall Street institutions that has shaken US and European stock markets.

American Airlines was named on red.

It's Wall Street bets thread Thursday.

That's the forum where chats among bullish individual traders have fueled rallies pitting them against professional traders who bet that those shares will drop.

American is the most heavily shorted airline stock, according to data from research firm s 33 exaggerated price moves of shorted stocks are drawing MAWR calls for regulatory scrutiny.

Gerber Kawasaki Chief operating officer Danilo Kawasaki.

I'm not a big fan of short sailors, but, you know, they go out, they do the research, and then they got taken out by a gang of, you know, retail ambassadors trying to make a quick buck.

Um, so you know, I I think regulators need to step in.

Shares of US airlines have gained ground since November but have come under renewed pressure earlier this week.

The pack of retail traders, some of them former bankers working for themselves, has become an increasingly powerful force.

U.

B s data shows they accounted for 1/5 of equity orders last year.