| | The U.S. Securities and Exchange Commission waded into the battle between small investors and Wall Street hedge funds, warning brokerages and the pack of social-media traders that it was watching for potential wrongdoing. | | | Texas Attorney General Ken Paxton issued 13 civil investigative demands on Friday to Robinhood, Discord, Citadel and others that suspended stock trading and investing, his office said in a statement. | | | Britain's financial markets regulator, responding to extreme share price movements in U.S. equity markets in recent days, said it would take "appropriate action" if there was evidence of actions that hurt consumers or markets. | | | U.S. stock indexes slumped on Friday as investors gauged the efficacy data of Johnson & Johnson's COVID-19 vaccine, while a standoff between Wall Street hedge funds and small, retail investors contributed to volatility. | | | A chat with U.S. Democratic lawmaker Alexandria Ocasio-Cortez drew more than a million viewers overnight to a website best-known for video game players, where she dissected this week's headline-grabbing battle between Reddit online traders and hedge funds. | | | Johnson & Johnson said on Friday that its single-dose vaccine was 66% effective in preventing COVID-19 in a large global trial against multiple variants, giving health officials another weapon to tackle the pandemic. | | | Johnson & Johnson said its single-dose vaccine was 72% effective in preventing COVID-19 in the United States but a lower rate of 66% was observed globally in the large trial conducted across three continents and against multiple variants. | | | Silver prices jumped and global equity markets sank on Friday amid a growing battle on Wall Street between hedge funds and retail investors, while a dispute over COVID-19 vaccine supply in Europe cooled risk appetite. | | | Online broker Robinhood has raised more than $1 billion of fresh capital from existing investors, having been strained by high volumes of trading this week and raising the ire of customers, celebrities and politicians for curbing the purchase of some hot stocks. | | | Huawei Chief Financial Officer Meng Wanzhou's request to loosen the bail terms set during her release from jail in 2018 has been rejected, a Canadian judge ruled on Friday, as she fights a U.S. extradition case. | | | | |