Portfolio Recovery (Nasdaq: PRAA) 66.8% LOWER; the company filed its 10-Q for the period ended June 30, 2013. Earnings were reported on Tuesday.

Stereotaxis Inc. (Nasdaq: STXS) 42.9% HIGHER; momentum mover going back higher after a modest drop on Thursday. Shares rose 230 percent following news that it was granted 510(k) clearance by the Food and Drug Administration (FDA) to market its Vdrive Robotic Navigation System with V-Sono Intracardiac Echocardiography (ICE) catheter manipulator in the U.S.

SORL Auto Parts, Inc. (Nasdaq: SORL) 34.8% HIGHER; making a strong move back above $3 to a new 52-week high of $4.85 on volume. Short interest on the name is light at 0.5 percent of float.

Body Central Corp. (Nasdaq: BODY) 33.0% LOWER; reported Q2 EPS of ($0.15), $0.25 worse than the analyst estimate of $0.10. Revenue for the quarter came in at $75.1 million versus the consensus estimate of $82.03 million. Same-store sales decreased 2.1% to $66.9 million due to a comparable-store sales decrease of 13.2%, partially offset by a net increase of 29 stores over the same quarter last year.

China Hydroelectric Corp. (NYSE: CHC) 26.4% HIGHER; Vicis Capital, LLC, cut its stake from 35 million shares down to about 7 million shares.

Audience (Nasdaq: ADNC) 21.8% LOWER; reported Q2 EPS of $0.24, $0.07 better than the analyst estimate of $0.17. Revenue for the quarter came in at $45.3 million versus the consensus estimate of $44.87 million. Audience sees Q3 2013 EPS of ($0.13)-($0.09), versus the consensus of $0.15. Audience sees Q3 2013 revenue of $31-34 million, versus the consensus of $44.91 million.

Alaska Communications (Nasdaq: ALSK) 25.5% HIGHER; reported Q2 EPS of $0.80, $0.73 better than the analyst estimate of $0.07. Revenue for the quarter came in at $97.7 million versus the consensus estimate of $90.84 million.

Active Network (NYSE: ACTV) 24.9% HIGHER; reported Q2 EPS of $0.08, $0.02 better than the analyst estimate of $0.06. Revenue for the quarter came in at $132.4 million versus the consensus estimate of $130.9 million. Separately, the Company noted it has received expressions of interest from outside parties ranging from an investment in ACTIVE Network to an acquisition of the Company. As a result, ACTIVE Network announced today its Board of Directors has a committee in place to evaluate strategic alternatives.

Blyth, Inc. (NYSE: BTH) 21.6% LOWER; reported Q2 EPS of ($0.08), versus $0.46 reported last year. Revenue for the quarter came in at $211.73 million, versus $309.47 million reported last year. Blyth sees FY2013 EPS of $0.75 - $0.90, versus prior guidance of $1.30 - $1.45.

Maxwell Technologies, Inc. (Nasdaq: MXWL) 19.7% HIGHER; filed today with the Securities and Exchange Commission (SEC) its Annual Report on Form 10-K for the fiscal year ended December 31, 2012, and its Quarterly Reports on Form 10-Q for the first and second quarters of 2013, ended March 31, 2013 and June 30, 2013. Maxwell has concluded its previously-announced financial statement restatement, has filed all required and delinquent periodic SEC filings, and expects to regain compliance with NASDAQ listing rules. For the full release, click here.

Weight Watchers Int'l (NYSE: WTW) 18.2% LOWER; reported Q2 EPS of $1.39, $0.29 better than the analyst estimate of $1.10. Revenue for the quarter came in at $465.1 million versus the consensus estimate of $459.34 million. Weight Watchers sees FY2013 EPS of $3.55-$3.70, versus prior guidance of $3.60-$3.90 and the consensus of $3.73. The company also announced that James Chambers has been appointed President and Chief Executive Officer effective July 30, 2013.

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