5 things to know before the stock market opens Monday

Here are the most important news, trends and analysis that investors need to start their trading day:

House Democrats are expected to propose sweeping tax increases on U.S. companies, wealthy Americans and investors to help pay for their $3.5 trillion budget bill. The plan calls for a corporate tax hike rate to 26.5% from 21% and a 3% surtax on individual income above $5 million, according Reuters, citing two people familiar with the matter. Democrats are also considering raising the top capital gains tax rate to 28.8% from 23.8%. The House returns from its summer recess on Sept. 20. The Senate comes back Monday.

U.S.-based Pfizer’s Covid vaccine, developed in conjunction with German partner BioNTech, could be authorized for use in kids 5-11 as soon as next month, according to two sources familiar with the situation who spoke to Reuters. Pfizer is expected to have enough study data by then to submit an application for emergency use to the FDA. The two-dose Pfizer shot is already on emergency use for adolescents 12-15 and full approval for people 16 and older.

Hong Kong-listed shares of Alibaba dropped more than 4% overnight after a Financial Times report that Beijing wants to break up Ant Group’s Alipay and force the creation of a separate loans app. U.S. shares of Alibaba, Ant Group’s e-commerce affiliate, were also under pressure in Monday’s premarket. Chinese electric vehicle stocks also dropped after the industry minister said there are “too many” EV makers in China and that consolidation in the sector is needed. However, EV maker Xpeng’s shares steadied in U.S. premarket trading.

Disney will show the remainder of its slate of movies this year exclusively in theaters, rather than making them simultaneously available on its Disney+ streaming service. Disney’s “Shang-Chi And The Legend Of The 10 Rings,” only in theaters, topped the weekend box office once again following its record Labor Day weekend debut. “Shang-Chi,” in the Marvel Cinematic Universe, has grossed nearly $250 million globally, and it doesn’t even have a release date in China yet.

— Reuters and The Associated Press contributed to this report. Follow all the market action like a pro on CNBC Pro. Get the latest on the pandemic with CNBC’s coronavirus coverage.