What's moving markets today: March 29, 2019

Spotify (SPOT) now has 100 million people globally paying for its premium music service, a 32% jump year-over-year. The company revealed that it had reached milestone in its first quarter earnings.

Here's what else you should know:

Tesla (TSLA) shares are climbing 1.5% in premarket trading following an agreement sealed late Friday over his tweets.

CEO Elon Musk and the US Securities and Exchange Commission agreed to amend a settlement deal approved last October that required oversight of Musk's social media use.

The updated deal outlines a slew of topics Musk cannot tweet about until he obtains pre-approval from an "experienced securities lawyer."

Today's losses claw back some of the stock's Friday losses, when it closed 5% lower.

Boeing (BA) is likely to face tough questions from shareholders at its annual meeting later today.

CEO Dennis Muilenburg will appear before investors in Chicago after two deadly crashes of its 737 Max in less than six months.

CNN has reported that four Boeing employees called an FAA whistleblower hotline the day after Ethiopia released a preliminary crash report on Ethiopian Airlines flight 302.

Among the information they provided is a previously unreported issue involving damage to the wiring of the angle of attack sensor by a foreign object, according to the source.

The continued grounding of the 737 Max is costing airlines hundreds of millions of dollars.

American Airlines (AAL), Southwest Airlines (LUV) and European budget carrier Norwegian all revealed last week that the inability to use the aircraft will cost them nearly $600 million combined.

Google's parent company, Alphabet, has another chance today to show off the strength of its massive advertising business.

Analysts surveyed by Refinitiv expect Alphabet (GOOGL) to report first-quarter sales of $37.3 billion, an increase of 20% over the same period last year.

Net income is forecast to rise 6.5% to $7.5 billion. The company reports earnings after the closing bell.

Some of the biggest names in tech have surprised analysts with strong openings to 2019. Facebook (FB) and Amazon (AMZN), for example, have already topped Wall Street's expectations.

Here's what investors are keeping an eye on: