5 of Last Week's Biggest Losers

There's never a shortage of stocks going the wrong way in any given chunk of time. No stock goes straight up, and sometimes fundamentals can get a bit wobbly. Let's take a closer look at five of this past week's biggest sinkers.

Source: Barron's.

Let's start with RealPage. The provider of property management software solutions received an eviction notice from investor portfolios after offering up preliminary quarterly results that were disappointing. RealPage blames the high occupancy levels on residential leases as the culprit for keeping property owners from needing RealPage's services. The $93.8 million to $94.8 million that it's now targeting in second-quarter revenue is flat with the prior year's but falls shy of the $107.2 million the pros were expecting.

BlackBerry got squeezed after Apple and IBM announced a partnership that would find the two tech titans joining forces to offer enterprise solutions. The move threatens BlackBerry's mobile device management business, and if the partnership is successful, it will naturally lower the already battered BlackBerry's prospects in a potential buyout.  

Molycorp fell a little closer to Earth after having its credit rating downgraded. Molycorp was once a market darling on the potential of rare-earth minerals, but it's been a challenge in recent quarters for it to live up to earlier expectations. 

Advanced Micro Devices buckled after offering up problematic guidance on top of ho-hum financials results. Revenue climbed 24% to $1.44 billion as expected, but its adjusted profit of $0.02 a share fell just short of expectations. However, the real dagger came in guidance, where the midpoint of AMD's guidance suggests that it will fall well short of the $1.57 billion Wall Street was forecasting.

Finally we have SanDisk. The data storage solutions behemoth tanked after following up mixed quarterly results with a gloomy outlook for the current period. SanDisk's eyeing lower revenue for the third quarter than the market was expecting, and the challenge of lower prices isn't shining too kindly on its gross margins.