Did you miss "Mad Money" on CNBC? If so, here are some of Jim Cramer's top takeaways.

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Shares of Roku (ROKU) - Get Roku, Inc. Class A Report have been on fire since their IPO earlier this week, rising 68% on Thursday and another 13% today. Is the company still a buy now that the much-anticipated unicorn has been released?

Not so fast, Cramer cautioned viewers. There's a lot to like at Roku, including strong sales, expanding gross margins and, after this week, a strong balance sheet. But there are also reasons for concern.

While none of Roku's competitors are focused solely on TV streaming like Roku is, the company does still have a growing number of sizable foes, including Apple (AAPL) - Get Apple Inc. (AAPL) Report , Alphabet (GOOGL) - Get Alphabet Inc. Class A Report and Amazon, along with a host of smaller streaming services.

But most concerning for Cramer was Roku's lack of a path to profits. The company isn't losing a ton of money, he said, but they also haven't made much progress since 2015. With the insider-selling lock-up release looming in just a few months, Cramer said he'd take a pass on Roku for the time being.

Over on Real Money, Cramer says the trend appears to be, "If it's up, buy it." But is that wise? Get his insights with a free trial subscription to Real Money.

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At the time of publication, Cramer's Action Alerts PLUS had a position in PEP, AAPL.