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Jim Cramer weighs in on what investors need to pay attention to when a company is set to release earnings after IPOing. 

He based the question on Lyft's (LYFT) recent earnings, but with Pinterest (PINS) on the chopping block after Thursday's closing bell, a little extra insight can never hurt. 

So what's the one thing that you should listen for? Hint: it's not terribly surprising, but it requires homework.

"Well this is one of those where you want to hear a conference call and the conference call lays out the four or five points that need to be hit...This is going to say, listen, we needed to do this, we need to do this, we need to do this. So then you've got your benchmarks. That tends to be what happens in the first conference call is a layout of what management thinks has to happen and that's what you have to hear on the conference call," said Cramer. 

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