The streaming video pioneer added 5.2 million customers from April through June, 1 million fewer than forecasts from Thomson Reuters I/B/E/S, as it added new programming including “Lost in Space” and new episodes of Marvel’s “Jessica Jones” and “13 Reasons Why.” 
 
 “We had a strong but not stellar Q2,” Netflix said in a quarterly letter to shareholders. In after-hours trading on Monday, Netflix shares sunk 14 percent to $343.60, eroding $24.2 billion in market capitalization and down from an earlier close of $400.48. The video service posted revenue of $3.91 billion in the period, falling short of Wall Street expectations. Analysts surveyed by Zacks had expected revenue of $4.14 billion. For the current quarter ending in October, Netflix said it expects revenue in the range of $3.99 billion.
– Netflix's share price, which had more than doubled since the start of the year, tumbled Monday after the company admitted that subscriber growth is beginning to slow down. In a letter to shareholders, the company said subscriber growth between April and June had been 5.2 million—1 million below its prediction, CBS News reports. The company said it had "over-forecasted" subscriber numbers in the "strong but not stellar" quarter, reports Reuters. Shares dived nearly 14% in after-hours trading following the letter, wiping around $25 billion from the company's market valuation. (The company's top spokesman was fired last month for his "insensitive" use of a racial slur when discussing comedy.)