Below are the U.S. stocks falling on unusual trading volume in the previous trading session, ranked based on daily price change.
RANKING | STOCK | DAILY CHANGE
1 EnerNOC, Inc. (ENOC) -18.0%
2 Focus Media Holding Limited (ADR) (FMCN) -17.3%
3 Camelot Information Systems Inc (ADR) (CIS) -14.4%
5 Home Inns & Hotels Management Inc. (ADR) (HMIN) -12.6%
6 CF Industries Holdings, Inc. (CF) -12.5%
7 Sun Healthcare Group Inc (SUNH) -12.3%
8 WisdomTree Investments, Inc. (WETF) -12.2%
9 Neptune Technologies & Bioressources-Ord (NEPT) -12.1%
10 Ingersoll-Rand PLC (IR) -12.1%
11 Sun Hydraulics Corporation (SNHY) -11.9%
12 Sotheby's (BID) -11.8%
13 Lennox International Inc. (LII) -11.0%
14 HiSoft Technology Internatnl Ltd (ADR) (HSFT) -10.3%
15 Thor Industries, Inc. (THO) -10.0%
16 ATP Oil & Gas Corporation (ATPG) -9.7%
17 The Mosaic Company (MOS) -9.6%
18 ISTA Pharmaceuticals, Inc. (ISTA) -9.4%
19 Delta Petroleum Corp. (DPTR) -9.4%
20 Celanese Corporation (CE) -9.3%
21 Louisiana-Pacific Corporation (LPX) -9.1%
22 51job, Inc. (ADR) (JOBS) -8.8%
23 NII Holdings, Inc. (NIHD) -8.6%
24 Allot Communications Ltd. (ALLT) -8.5%
25 C&J Energy Services Inc (CJES) -8.5%
26 SouFun Holdings Limited (ADR) (SFUN) -8.5%
27 Wynn Resorts, Limited (WYNN) -8.3%
28 LyondellBasell Industries NV (LYB) -8.3%
29 Itron, Inc. (ITRI) -8.2%
30 Sensata Technologies Holding N.V. (ST) -7.9%
31 Bridgepoint Education, Inc. (BPI) -7.9%
32 Cemex SAB de CV (ADR) (CX) -7.9%
33 Diana Shipping Inc. (DSX) -7.6%
34 DynaVox, Inc. (DVOX) -7.2%
35 Cohen & Steers, Inc. (CNS) -6.8%
36 7 DAYS GROUP HOLDINGS LIMITED(ADR) (SVN) -6.8%
37 Jacobs Engineering Group Inc. (JEC) -6.7%
38 Stone Energy Corporation (SGY) -6.4%
39 SandRidge Permian Trust (PER) -6.4%
40 Lone Pine Resources Inc (LPR) -6.2%
41 Towerstream Corporation (TWER) -6.2%
42 Changyou.com Limited(ADR) (CYOU) -6.2%
43 Thermon Group Holdings Inc (THR) -6.2%
44 Fluor Corporation (NEW) (FLR) -6.1%
45 Kratos Defense & Security Solutions, Inc (KTOS) -6.0%
46 Tiffany & Co. (TIF) -6.0%
47 Luxottica Group SpA (ADR) (LUX) -5.9%
48 Flowserve Corporation (FLS) -5.9%
49 Chemtura Corporation (CHMT) -5.7%
50 Sterling Financial Corporation (STSA) -5.7%
51 New Oriental Education & Tech Grp (ADR) (EDU) -5.7%
52 Shanda Games Limited(ADR) (GAME) -5.7%
53 Washington Federal Inc. (WFSL) -5.6%
54 Given Imaging Ltd. (GIVN) -5.6%
55 PacWest Bancorp (PACW) -5.6%
56 Diana Containerships Inc (DCIX) -5.6%
57 Advantage Oil & Gas Ltd. (AAV) -5.3%
58 Digi International Inc. (DGII) -5.3%
59 Howard Hughes Corp (HHC) -5.1%
60 Celldex Therapeutics, Inc. (CLDX) -5.0%
61 Sabra Health Care REIT Inc (SBRA) -5.0%
62 Shanda Interactive Entertainment Ltd ADR (SNDA) -5.0%
63 Double Eagle Petroleum Co. (DBLE) -4.9%
64 CBOE Holdings, Inc (CBOE) -4.9%
65 Columbia Banking System, Inc. (COLB) -4.9%
66 SunCoke Energy, Inc (SXC) -4.8%
67 Sohu.com Inc. (SOHU) -4.8%
68 MakeMyTrip Limited (MMYT) -4.7%
69 Trius Therapeutics, Inc. (TSRX) -4.7%
70 Federal-Mogul Corporation (FDML) -4.7%
71 Ctrip.com International, Ltd. (ADR) (CTRP) -4.6%
72 Brookfield Office Properties Inc. (BPO) -4.6%
73 The Ryland Group, Inc. (RYL) -4.5%
74 Raptor Pharmaceutical Corp. (RPTP) -4.4%
75 Watsco, Incorporated (WSO) -4.4%
76 Quad/Graphics, Inc. (QUAD) -4.4%
77 ModusLink Global Solutions, Inc. (MLNK) -4.4%
78 The Wendy's Company (WEN) -4.4%
79 DISH Network Corp. (DISH) -4.4%
80 UMB Financial Corporation (UMBF) -4.3%
81 United Financial Bancorp, Inc. (UBNK) -4.3%
82 AMETEK, Inc. (AME) -4.2%
83 Radware Ltd. (RDWR) -4.2%
84 Omega Healthcare Investors, Inc. (OHI) -4.0%
85 Aspen Technology, Inc. (AZPN) -4.0%
86 Bottomline Technologies (EPAY) -3.9%
87 AdCare Health Systems, Inc. (ADK) -3.9%
88 Fortress Investment Group LLC (FIG) -3.8%
89 CARBO Ceramics Inc. (CRR) -3.8%
90 KiOR Inc (KIOR) -3.8%
91 AMC Networks Inc (AMCX) -3.7%
92 Braskem SA (ADR) (BAK) -3.7%
93 DuPont Fabros Technology, Inc. (DFT) -3.6%
94 Regency Centers Corporation (REG) -3.5%
95 The Geo Group, Inc. (GEO) -3.5%
96 AZZ Incorporated (AZZ) -3.5%
97 Rogers Corporation (ROG) -3.5%
98 Medical Properties Trust, Inc. (MPW) -3.3%
99 21Vianet Group Inc (VNET) -3.3%
100 Nuance Communications Inc. (NUAN) -3.3%
101 VanceInfo Technologies Inc.(ADR) (VIT) -3.3%
102 Eagle Materials, Inc. (EXP) -3.1%
103 Turkcell Iletisim Hizmetleri A.S. (ADR) (TKC) -3.1%
104 Baidu.com, Inc. (ADR) (BIDU) -3.1%
105 Selective Insurance Group (SIGI) -3.0%
106 EnPro Industries, Inc. (NPO) -3.0%
107 BT Group plc (ADR) (BT) -2.9%
108 QEP Resources, Inc. (QEP) -2.9%
109 Franklin Electric Co. (FELE) -2.9%
110 Kilroy Realty Corporation (KRC) -2.9%
111 Zillow Inc (Z) -2.8%
112 United States Cellular Corporation (USM) -2.8%
113 Amerisafe, Inc. (AMSF) -2.7%
114 First Industrial Realty Trust, Inc. (FR) -2.7%
115 Health Management Associates, Inc. (HMA) -2.7%
116 Otter Tail Corporation (OTTR) -2.7%
117 Ultrapar Participacoes SA (ADR) (UGP) -2.5%
118 Bankrate Inc (RATE) -2.5%
119 eHealth, Inc. (EHTH) -2.4%
120 Shinhan Financial Group Co., Ltd. (ADR) (SHG) -2.4%
121 Checkpoint Systems, Inc. (CKP) -2.4%
122 MDU Resources Group, Inc. (MDU) -2.3%
123 Pearson PLC (ADR) (PSO) -2.3%
124 Skullcandy Inc (SKUL) -2.3%
125 DICE HOLDINGS, INC. (DHX) -2.2%
126 Liberty Global, Inc. - Series C Common Stock (LBTYK) -2.2%
127 Vanguard Health Systems, Inc. (VHS) -2.2%
128 Valmont Industries, Inc. (VMI) -2.1%
129 3SBio Inc. (ADR) (SSRX) -2.1%
130 TFS Financial Corporation (TFSL) -1.9%
131 Huntsman Corporation (HUN) -1.9%
132 China Kanghui Holdings (ADR) (KH) -1.9%
133 Sovran Self Storage, Inc. (SSS) -1.8%
134 NCI, INC. (NCIT) -1.7%
135 State Bank Financial Corporation. (STBZ) -1.7%
136 Resources Connection, Inc. (RECN) -1.6%
137 Home Properties, Inc. (HME) -1.6%
138 Acorda Therapeutics Inc. (ACOR) -1.5%
139 Elster Group SE ADR (ELT) -1.5%
140 CapitalSource, Inc. (CSE) -1.4%
141 LCA-Vision Inc. (LCAV) -1.4%
142 Constant Contact, Inc. (CTCT) -1.3%
143 Signet Jewelers Ltd. (SIG) -1.3%
144 United Community Banks, Inc. (UCBI) -1.3%
145 Dunkin' Brands Group Inc (DNKN) -1.2%
146 Bunge Limited (BG) -1.1%
147 HeartWare International Inc (HTWR) -1.1%
148 BRF Brasil Foods SA(ADR) (BRFS) -1.1%
149 Safety Insurance Group, Inc. (SAFT) -1.0%
150 RBC Bearings Incorporated (ROLL) -0.8%
151 Cumulus Media Inc. (CMLS) -0.7%
152 Triple-S Management Corp. (GTS) -0.7%
153 Horace Mann Educators Corporation (HMN) -0.6%
154 AbitibiBowater Inc. (ABH) -0.6%
155 HomeAway, Inc. (AWAY) -0.6%
156 Carbonite Inc (CARB) -0.5%
157 Apollo Residential Mortgage Inc (AMTG) -0.5%
158 A.T. Cross Company (ATX) -0.4%
159 Atwood Oceanics, Inc. (ATW) -0.4%
160 NSTAR (NST) -0.4%
161 GulfMark Offshore, Inc. (GLF) -0.4%
162 CIRCOR International, Inc. (CIR) -0.4%
163 Metro Bancorp, Inc. (METR) -0.3%
164 Yum! Brands, Inc. (YUM) -0.3%
165 Tangoe Inc (TNGO) -0.3%
166 APAC Customer Services, Inc. (APAC) -0.2%
167 Harleysville Group Inc. (HGIC) -0.2%