By now most people, even those vaguely tuned into finances, have heard the phrase "meme stock." But if you're just catching up, here are some basics.

It seems meme stocks are back, and this time, the latest craze was sparked—somewhat accidentally—by a Canadian hedge fund manager named Eric Jackson.

Amid this week's speculative frenzy in a handful of meme stocks, we asked AI what to look for when trying to pick the next candidate to go parabolic.

Retail investors are once again banding together to bet on highly shorted loss-making companies such as Kohl's and Krispy Kreme this week, bringing to mind the "meme stock" frenzy that gripped Wall Street four years ago.

As the stocks rise, that puts pressure on short-selling hedge funds that borrowed the shares to bet against them. They’re forced to quickly repurchase them at a loss—a formula

Bursts of euphoric trading are often bullish for near-term returns, but rapid surges in speculation also raise the risk of a pullback, Goldman said.

Sydney Sweeney has reportedly helped American Eagle’s stock climb higher this week. The White Lotus actress has recently collaborated with the clothing brand for a special collection, which includes a denim jacket and “The Sydney Jean.

Steve Quirk, Robinhood chief brokerage officer, joins 'Squawk Box' to discuss the resurgence in meme stocks, meme stock trading trends, and more.