If you bought Zillow stock last year, you’re in the money. Shares of the listing giant shot up nearly 20 percent last week, breaking $200 per share on Feb. 11, a day after Zillow reported better-than-projected earnings for 2020. To put that in perspective, the stock is now up 280 percent from last year at this time, when it was trading around $50 per share. (And yes, that’s before it plunged to around $20 on Covid fears.) Now, a slew of analysts think it could go even higher: Citi raised its price target to $250 from $130. Zillow’s market cap is now $47 billion. What’s behind the pop?