Below are the U.S. stocks rising on unusual trading volume during today's trading session, ranked based on daily price change.
RANKING | STOCK | DAILY CHANGE
1 Royale Energy, Inc. (ROYL) 65.0%
2 TriQuint Semiconductor (TQNT) 24.6%
3 Zoom Technologies, Inc. (ZOOM) 19.6%
5 SINA Corporation (USA) (SINA) 18.3%
6 Toreador Resources Corporation (TRGL) 17.4%
7 Walter Energy, Inc. (WLT) 12.7%
8 China Medical Technologies, Inc. (ADR) (CMED) 11.6%
9 Air Methods Corporation (AIRM) 11.1%
10 Hollysys Automation Technologies Ltd (HOLI) 10.9%
11 EDAP TMS S.A. (ADR) (EDAP) 10.6%
12 Fairchild Semiconductor International (FCS) 10.2%
13 ZHONGPIN INC. (HOGS) 10.1%
14 Spirit Airlines Incorporated (SAVE) 9.5%
15 Majesco Entertainment Co. (COOL) 9.5%
16 U.S. Global Investors, Inc. (GROW) 9.2%
17 Vertex Pharmaceuticals Incorporated (VRTX) 9.0%
18 Telestone Technologies Corporation (TSTC) 9.0%
19 Range Resources Corp. (RRC) 8.8%
20 Owens-Illinois, Inc. (OI) 8.5%
21 ON Semiconductor Corp. (ONNN) 8.1%
22 Biolase Technology, Inc. (BLTI) 8.0%
23 Mistras Group, Inc. (MG) 7.9%
24 Freescale Semiconductor Holdings I, Ltd. (FSL) 7.8%
25 hhgregg, Inc. (HGG) 7.6%
26 Cemex SAB de CV (ADR) (CX) 7.6%
27 Clean Diesel Technologies, Inc. (CDTI) 7.5%
28 Micromet Inc. (MITI) 7.4%
29 AXT, Inc. (AXTI) 7.4%
30 Medquist Holdings Inc (MEDH) 7.2%
31 Costamare Inc (CMRE) 7.1%
32 CONN'S, Inc. (CONN) 6.9%
33 Thoratec Corporation (THOR) 6.6%
34 AOL, Inc. (AOL) 6.5%
35 Williams-Sonoma, Inc. (WSM) 6.4%
36 AuthenTec, Inc. (AUTH) 6.3%
37 RPC, Inc. (RES) 5.9%
38 Rubicon Technology, Inc. (RBCN) 5.7%
39 Atmel Corporation (ATML) 5.7%
40 Investment Technology Group (ITG) 5.7%
41 BMC Software, Inc. (BMC) 5.7%
42 SUPERVALU INC. (SVU) 5.6%
43 Tornier N.V. (TRNX) 5.2%
44 Rackspace Hosting, Inc. (RAX) 4.9%
45 Akamai Technologies, Inc. (AKAM) 4.8%
46 Opko Health Inc (OPK) 4.8%
47 Linkedin Corporation (LNKD) 4.7%
48 Vishay Intertechnology (VSH) 4.4%
49 STAAR Surgical Company (STAA) 4.2%
50 EasyLink Services International Corp. (ESIC) 4.1%
51 Onyx Pharmaceuticals, Inc. (ONXX) 4.0%
52 IntraLinks Holdings, Inc. (IL) 3.9%
53 NII Holdings, Inc. (NIHD) 3.9%
54 Superior Energy Services, Inc. (SPN) 3.7%
55 Grupo Financiero Galicia S.A. (ADR) (GGAL) 3.6%
56 Gafisa SA (ADR) (GFA) 3.5%
57 ICON plc (ADR) (ICLR) 3.5%
58 Sagent Pharmaceuticals Inc (SGNT) 3.4%
59 Skyworks Solutions, Inc. (SWKS) 3.4%
60 Sally Beauty Holdings, Inc. (SBH) 3.4%
61 Lions Gate Entertainment Corp. (USA) (LGF) 3.4%
62 Medicis Pharmaceutical Corporation (MRX) 3.3%
63 Altera Corporation (ALTR) 3.3%
64 Liz Claiborne, Inc. (LIZ) 3.1%
65 NuStar GP Holdings, LLC (NSH) 3.1%
66 Phoenix New Media Ltd ADR (FENG) 3.0%
67 Inergy, L.P. (NRGY) 2.8%
68 TE Connectivity Ltd. (TEL) 2.8%
69 Kennedy-Wilson Holdings, Inc. (KW) 2.8%
70 ADTRAN, Inc. (ADTN) 2.5%
71 Aqua America, Inc. (WTR) 2.5%
72 Microchip Technology Inc. (MCHP) 2.5%
73 Gol Linhas Aereas Inteligentes SA (ADR) (GOL) 2.4%
74 Universal Health Services, Inc. (UHS) 2.2%
75 Franklin Electric Co. (FELE) 2.1%
76 Points International Ltd. (USA) (PCOM) 2.0%
77 Zipcar Inc (ZIP) 2.0%
78 W.R. Berkley Corporation (WRB) 1.9%
79 Google Inc. (GOOG) 1.9%
80 PetSmart, Inc. (PETM) 1.9%
81 Volcano Corporation (VOLC) 1.7%
82 Mechel OAO (ADR) (MTL) 1.7%
83 Willis Group Holdings PLC (WSH) 1.6%
84 Buffalo Wild Wings (BWLD) 1.5%
85 Rex American Resources Corp. (REX) 1.5%
86 Brown & Brown, Inc. (BRO) 1.5%
87 California Water Service Group (CWT) 1.5%
88 RightNow Technologies (RNOW) 1.4%
89 Green Mountain Coffee Roasters Inc. (GMCR) 1.4%
90 Avago Technologies Ltd (AVGO) 1.2%
91 Eaton Corporation (ETN) 1.1%
92 Reynolds American, Inc. (RAI) 1.0%
93 Delta Petroleum Corp. (DPTR) 1.0%
94 Polaris Industries Inc. (PII) 1.0%
95 99 Cents Only Stores (NDN) 0.9%
96 Philippine Long Distance Telephone (ADR) (PHI) 0.9%
97 Cabot Oil & Gas Corporation (COG) 0.9%
98 Chesapeake Midstream Partners, L.P. (CHKM) 0.8%
99 IDT Corporation (IDT) 0.8%
100 Global Partners LP (GLP) 0.7%
101 Copano Energy, L.L.C. (CPNO) 0.7%
102 Gentex Corporation (GNTX) 0.7%
103 Targa Resources Partners LP (NGLS) 0.7%
104 PICO Holdings Inc (PICO) 0.6%
105 Sims Metal Management Ltd (ADR) (SMS) 0.5%
106 Eaton Vance Corp. (EV) 0.5%
107 Valmont Industries, Inc. (VMI) 0.5%
108 Sinovac Biotech Ltd. (SVA) 0.5%
109 Meru Networks, Inc. (MERU) 0.4%
110 Henry Schein, Inc. (HSIC) 0.3%
111 Brunswick Corporation (BC) 0.3%
112 TRW Automotive Holdings Corp. (TRW) 0.3%
113 Greatbatch Inc. (GB) 0.3%
114 Tata Communications Limited (ADR) (TCL) 0.3%
115 Tyler Technologies, Inc. (TYL) 0.3%
116 Sequenom, Inc. (SQNM) 0.2%
117 Clear Channel Outdoor Holdings, Inc. (CCO) 0.2%
118 Neustar, Inc (NSR) 0.1%