Stock futures are mixed and tech shares claw back some losses; the SEC opens an inquiry into the SPAC frenzy; Rite Aid slumps after lowering guidance; AstraZeneca' revises down vaccine efficacy rate.

Stock futures rise as investors await testimony from Federal Reserve Chairman Jerome Powell and look back at the best monthly performance for equities since April; Tesla to be added to the S&P 500 in one tranche; Salesforce reports earnings.

In addition to Alibaba, Tencent, Weibo and several other U.S.-listed Chinese tech firms are lower on a day the Nasdaq is up about 2%.

Following major overnight gains for Chinese equities, U.S.-listed Chinese tech stocks are ripping higher in Monday trading.

The ECB and Fed launch emergency aid programs to support economies weakened by the coronavirus pandemic; the NYSE will close its trading floor beginning Monday; an Amazon employee at a facility in Queens, New York, tests positive for the virus.

U.S. stock futures rise modestly on Tuesday as investors are cautiously optimistic a trade deal between Washington and Beijing can be reached; Johnson & Johnson is found responsible for helping fuel the opioid crisis in Oklahome and is ordered to pay $572 million; Russian conglomerate Rostec confirms it filed a lawsuit in the United States to cancel its order for Boeing 737 MAX jets, a report says.

Shares of 'China's Tinder,' app- and mobile-game maker Momo gained additional ground on Wednesday after receiving an upgrade from analysts at Citigroup to buy from neutral.

Shares of 'China's Tinder' surge on Tuesday following first-quarter earnings that beat analysts' forecasts amid a strong uptick in live video service revenue.

U.S. stock futures are lower as caution still prevails amid concerns over the fate of trade talks between Washington and Beijing; the French government says it jobs protected needs in order to support the proposed merger of Fiat Chrysler and Renault; Alibaba is considering raising $20 billion through a second listing in Hong Kong, a report says.

Fully 89% of Americans say ex-offenders should be given a second chance, a survey says.

Participation in this sport grew the fastest of any in the U.S. from 2019-21, reaching the 4.8 million-player mark.

DocuSign said the job cuts will "improve operating margin and support the company’s growth, scale and profitability objectives".