Keep an eye on Spotify (SPOT). On Thursday, Oct. 22, before the market opens, the company will post third-quarter earnings. Wall Street is looking for EPS of between $2.86 and $3.26 on revenue of between $5.58 billion and $5.65 billion. Making the stock even more attractive, it ended its prior quarter with 300 million Premium subscribers, up 9% year over year. Monthly users in its second quarter grew 12% to 777 million. Gross margins hit a record high of 33.4% as well. For its most recent quarter, it expects to see 305 million Premium subscribers and 788 million monthly active users. However, guidance calls for margins of 32.9%, a number that investors should pay very close attention to.