Robinhood says U.S. watchdogs probing staff meme stock trading, registration

Robinhood Markets Inc disclosed on Tuesday it has received inquiries from U.S. watchdogs asking whether employees traded GameStop Corp. (GME.N) and AMC Entertainment Holdings, Inc. (AMC.N) before the online broker publicly announced it was restricting trading in those and other meme stocks on Jan. 28.
Alfi Inc shares more than double, other ‘meme stocks’ mixed

Shares of software firm Alfi Inc (ALF.O) finished up 108.8% on Tuesday, one of the latest companies that has seen its stock surge in a broader rally that has refocused attention on so-called meme stocks in recent weeks.
No inflation fears here: ARK’s Wood says portfolio should triple in five years

Lower prices for growth stocks as a result of the inflation-driven selloff that began in February should mean that Ark Investment’s portfolios should see a “more than tripling” over the next five years, star fund manager and firm founder Cathie Wood said in a webinar on Tuesday.
AMC, other ‘meme’ stocks jump; regulator signals concern

Shares of AMC Entertainment Holdings Inc (AMC.N) and other “meme stocks” jumped on Monday, extending a rally in social-media favorites into a third week as message boards hummed with talk of squeezing Wall Street short-sellers.
S&P closes nominally lower as investors wait for a catalyst

The S&P 500 (.SPX) ended a languid session slightly in the red on Monday, with investors standing by on news of a global minimum corporate tax rate, lingering inflation fears, and a lack of market-moving economic news.
Wall Street body proposes new rules on short positions, stock loans

The Financial Industry Regulatory Authority (FINRA), Wall Street’s self-regulatory body, has proposed changes to its short-interest reporting requirements in a bid to make information more useful.
EXCLUSIVE Some on Wall Street try options trade to bet against AMC without getting burned

Some Wall Street traders are betting against another massive rally in AMC Entertainment Holdings Inc (AMC.N) and other “meme” stocks this week through a type of wager in the options market that would limit their losses should retail investors behind the run-up prove them wrong.
Explainer: What is a gamma squeeze and how did it drive up AMC’s stock price?

Shares of AMC Entertainment Holdings Inc (AMC.N) surged to a record high this week in a blistering rally that again highlighted how an arcane options market dynamic known as a gamma squeeze can super-charge stock price gains.