What's better than momentum? Mo' momentum.

Let's take a closer look at five of this past week's biggest scorchers.

Company

July 6 Weekly Gain My Watchlist
Nanosphere (Nasdaq: NSPH) $3.91 45% Add
Supernus Pharmaceuticals (Nasdaq: SUPN) $12.05 29% Add
MannKind (Nasdaq: MNKD) $5.42 34% Add
Netflix (Nasdaq: NFLX) $81.89 20% Add
Yelp (NYSE: YELP) $25.30 11% Add

Source: Barron's.

Nanosphere moved sharply higher after Jefferies analyst Jon Wood upgraded the company with a bullish buy rating and a $5 price target. Wood is encouraged by Nanosphere's recently approved blood infection test.

Supernus Pharmaceuticals soared 82% two weeks ago after the Food and Drug Administration tentatively approved the central nervous system treatment specialist's Trokendi drug. Momentum continued to move the stock higher last week.

Insider buying, the announcement of an upcoming conference presentation, and an analyst telling The Wall Street Journal that MannKind is a compelling acquisition target helped move the potential game changer in diabetes treatment higher.

Netflix had a double dose of good news. Citigroup's analyst issued a bullish note, pointing out that the company is trading for just 12 times the earnings of its stateside business. CEO Reed Hastings also revealed that the company served more than a billion hours of monthly video streams for the first time last month.

Yelp posted double-digit gains after reports suggested that the dining review specialist's social critiques would be incorporated into Apple's new mapping platform.

More winners for you
It was a great week for these five stocks. If you want to get an early read on some of tomorrow's major gainers there's a special report on three hidden winners in a booming industry. The report is free -- like this article -- but it won't be around forever, so check it out now.

The Motley Fool owns shares of Netflix. Motley Fool newsletter services have recommended buying shares of Netflix. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.

Longtime Fool contributor Rick Munarriz calls them as he sees them. He does not own shares in any of the stocks in this story, except for Netflix. Rick is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early.