10 things you need to know before the opening bell

Getty/Michael Kovac

Snap CEO Evan Spiegel

Here is what you need to know.

The trade war escalates. The second tranche of President Donald Trump's tariffs on Chinese goods will go into effect August 23, hitting $16 billion worth of imports.

Elon Musk wants to remove Tesla from the stock market. "Am considering taking Tesla private at $420. Funding secured," the CEO tweeted before issuing a formal statement on the company's website.

Saudi Arabia's sovereign wealth fund reportedly amassed a $2 billion stake in Tesla. According to the Financial Times, Saudi Arabia's Public Investment Fund now owns between three and five percent of Tesla's outstanding stock.

Snap beat on Q2 earnings, but reported its first drop in daily active users. The stock initially soared by as much as 13% in after-hours trading before giving back the gains.

Disney earnings miss. Second-quarter profit was weaker than expected due to higher programming costs and a drop in ESPN subscribers.

Mutual funds are bleeding cash at an unprecedented rate, and they're increasingly vulnerable to a meltdown. According to Moody's, investors have pulled cash from actively managed equity mutual funds in the US at the fastest year-to-date pace on record.

One in two initial coin offerings (ICOs) failed in the second quarter - and those that succeeded suffered huge losses. The average return for ICO tokens in the quarter was -55%, compared with a gain of nearly 50% in the first quarter.

Salesforce just promoted its top salesman to the title of co-CEO. Keith Block, formerly the chief operating officer, will lead with long-time CEO Marc Benioff and report directly to Salesforce's board of directors.

More earnings are on tap. Yelp, 21st Century Fox, Monster Beverage, and the travel-fare aggregator Booking Holdings report after the closing bell.

US equity futures are slightly higher. The 10-year yield is up by less than one basis point at 2.975%.