Please Note: Blog posts are not selected, edited or screened by Seeking Alpha editors.

Stocks that became more expensive to borrow and short over the prior 7 days

The stocks below showed the largest increase in borrowing cost last week, from May 6 to May 13.  The list was taken from US, Canadian and Japanese stock universe.  An increase in cost-to-borrow indicates a greater demand to short and/or a reduced supply of available shares to borrow.

Name Ticker Change in cost-to-borrow (bps)
YONGYE INTL INC              YONG 5,520
APRICUS BIOSCIENCES INC      APRI 4,423
FEIHE INTL INC               ADY  3,639
SULPHCO INC                  SUF  3,488
LIFE PARTNERS HOLDINGS INC   LPHI 2,434
CHINA BIOLOGIC PRODS INC     CBPO 2,426
FIRST CLOVER LEAF FIN CORP   FCLF 2,297
NYMOX PHARMACEUTICAL CORP    NYMX 2,269
CHINA SHEN ZHOU MNG & RES IN SHZ  2,098
ALLIANCEBERNSTEIN HOLDING LP AB   1,813
CHINA PRECISION STEEL INC    CPSL 1,749
CHINA GREEN AGRICULTURE INC  CGA  1,578
DUOYUAN GLOBAL WTR INC       DGW  1,509
HSW INTERNATIONAL INC        HSWI 1,497
CHINA-BIOTICS INC            CHBT 1,465
AVANIR PHARMACEUTICALS INC   AVNR 1,458
MAYFLOWER BANCORP INC        MFLR 1,397
HOKU CORP                    HOKU 1,394
PURE BIOSCIENCE INC          PURE 1,348
YRC WORLDWIDE INC            YRCW 1,252
EVERGREEN SOLAR INC          ESLR 1,237
PARK BANCORP INC             PFED 1,197
STERLING FINL CORP WASH      STSA 1,133
PUDA COAL INC                PUDA 1,110
SOMAXON PHARMACEUTICALS INC  SOMX 1,059
LIHUA INTL INC               LIWA 1,033
USA TECHNOLOGIES INC         USAT 1,025
FIRST BANCORP P R            FBP  1,003
AMERICAN INTL GROUP INC      AIG  992
MARUKYU CO LTD     8167 986
ROYALE ENERGY INC            ROYL 967
SKYSTAR BIO-PHARMA CO        SKBI 966
LUCAS ENERGY INC             LEI  933
FLEXIBLE SOLUTIONS INTL INC  FSI  911
ALANGE ENERGY CORP           ALE.TSXV 905
SANOFI AVENTIS               SNY  898
CROSSHAIR EXPL & MNG CORP    CXZ  892
SINO CLEAN ENERGY INC        SCEI 888
BIOANALYTICAL SYS INC        BASI 885
CHINA FIRE & SEC GROUP INC   CFSG 858
ZBB ENERGY CORPORATION       ZBB  838
IBIO INC                     IBIO 824
CHINA VALVES TECHNOLOGY INC  CVVT 818
AMERICAN SUPERCONDUCTOR CORP AMSC 805
MARKET VECTORS ETF TR        IDX  804
QCR HOLDINGS INC             QCRH 801
WESTINGHOUSE SOLAR           WEST.D 750
WINNER MEDICAL GRP INC       WWIN 729
MAD CATZ INTERACTIVE INC     MCZ  713
LIGHTBRIDGE CORP             LTBR 697