Be patient.

Or so, says Bob Lang, a contributor to The streets sister site, Real money.

Lang spoke to The street about everything about Roku (ROKU) and why investors have to wait for their time with this company.

"So you know that Roku was one of those high-beta, high-growth names that had just been stuck in December, with many other names for which the market had lost a lot of headlines. I hardly think, had a rise between December 1 and Christmas Eve, but it really went back, there was a significant volume down, which is a bit like what we would like to see when the stock is A few days after Christmas actually exploded higher with much of the market on Dec. 26, and it was sort of consolidated for about four or five days, "said Lang.

Find out what they say about Roku on real money. Not a member? Register here.

He continued: "And what we would like to see happen is that the stock must burst after the top of the first breakaway in about four to seven days, so that's what happened on the seventh day, Friday. This past Friday, it broke out and closed near the peaks of the day with a moving average of 20 days as well, I mean, it really made a huge boost last Friday, January 4. More or less in the opening of the day.Just about 36, 37 dollars.And he did not stop there.And he took off and he closed near the peaks of the day, well over 40 dollars The stock climbed nearly 27 percent that day, and I think this is due to a new early morning news. "

The stock closed Friday at 1.47% to 39.57 $.

Watch the full interview for a glimpse of Lang on Roku.

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