Following are Tuesday’s Pops and Drops.Find out what’s going up, what’s going down and whether our traders would double down, fade or run in the other direction!

Apollo GroupThe catalyst: Apollo Group beat earnings expectations and raised its guidance.The trade: It’s a heavily shorted group and I think the pop is a short-covering rally. There are still lot of headwinds, says trader Stephen Weiss, managing partner at Short Hills Capital and author of “The Big Win.” I’d stay away.

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MosaicThe catalyst: Although the catalyst was unclear, investors may think this fertilizer benefits as high temperatures in the Midwest threaten to reduce the corn crop. The trade: Mosaic trades at a single digit valuation and with a great cash position. I’m long and I like it, says trader Pete Najarian, co-founder OptionMonster.com.

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Harley DavidsonThe catalyst: UBS dropped their earnings per share (EPS) estimates Harley-Davidson in a report issued on Tuesday. The firm currently has a “neutral” rating and a $49.00 target price on the stock.

The trade: I’m skeptical and it seems like the chart is too, says trader Steve Cortes, founder Veracruz, a research and consulting firm.

MOS News & Analysis

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 INTERVIEW-Mosaic executives say takeover unlikely in near term - 14 May 2013 EDT

 Mosaic executives say not a 'strong likelihood' of takeover - 14 May 2013 EDT

 Final Trade: Your First Move for Tuesday, May 14 - 13 May 2013 EDT - CNBC.COM

 UPDATE 2-Mosaic builds $2 bln cash pile for share buyback - 13 May 2013 EDT

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