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.

Company

May 16

Weekly Loss

DXP Enterprises (DXPE 0.68%)

$66.57

38%

World Wrestling Entertainment (WWE)

$11.27

35%

NQ Mobile (NYSE: NQ)

$4.15

33%

Canadian Solar (CSIQ 0.60%)

$22.07

16%

ANI Pharmeceuticals (ANIP -1.07%)

$27.21

11%

Source: Barron's.

Let's start with DXP Enterprises. The provider of industrial services lost more than a third of its value after posting uninspiring quarterly results. Sales rose 20%, but that was largely the impact of acquisitions. Organic sales inched just 1.7% higher with operating income and earnings declining for the period. 

World Wresting Entertainment also got slammed to the mat last week. Investors bailed on the league of grapplers after announcing a contract renewal with NBCUniversal. It plans to collect about $200 million a year by offering Monday Night Raw on USA Network and Friday Night Smackdown on SyFy. That may seem like a lot of money for a new multi-year deal, but investors were spoiled by the much grander sums that were negotiated for other sport platforms.

NQ Mobile was another company that lost a third of its value on the week. The Chinese provider of mobile Internet services plunged after warning that it won't report its annual report on time. This isn't the first time NQ Mobile has blown its filing deadline. It filed for a 15-day extension last month, when it wasn't going to make the April 30 deadline. That 15-day extension wasn't enough.

This is problematic, because as a Chinese growth stock it's going to draw some accounting concerns. In fact, Muddy Waters last year accused NQ Mobile of flimsy accounting. What started out as a modest gray cloud is now bubbling with thunder and precipitation, and that won't change until the company can crank out audited financials. 

Canadian Solar didn't shine very bright after serving up disappointing financial results. Revenue clocked in ahead of its earlier guidance, but it was still less than a year earlier. Gross margins contracted to the point where profit fell well short of expectations. Canadian Solar's guidance calls for revenue during the current quarter to fall well short of market forecasts.

Finally we have ANI Pharmaceuticals slumping after pushing through dilutive financing. The developer of generic pharmaceutical products filed a primary offering of $250 million in mixed securities and a secondary offering for 3.5 million shares. ANI Pharmaceuticals took a brief dip earlier this month after missing Wall Street's revenue forecasts, and tapping the market seems poorly timed despite ANI's monster run over the past year.