The following tables show companies listed in the S&P 500 Index that have the largest changes in short interest as a percentage of shares available for trading as of the March 15 settlement date.

TOP 25 INCREASES IN SHORT INTEREST VS FLOAT


                                      March 15        Feb. 29    
                                  Short Interest   Short Interest   
Ticker Name                        /Free Float %   /Free Float %    Increase % 
=============================================================================
SWY   SAFEWAY INC                        21.53           14.42         7.11
POM   PEPCO HOLDINGS                     10.11            3.90         6.21
FSLR  FIRST SOLAR INC                    35.63           31.23         4.40
JCP   J.C. PENNEY CO                     25.23           21.78         3.44
GME   GAMESTOP CORP-A                    43.93           41.05         2.88
LEN   LENNAR CORP-A                      22.41           19.85         2.56
FHN   FIRST HORIZON NA                    5.60            3.49         2.11
DHI   DR HORTON INC                      12.27           10.36         1.91
LEG   LEGGETT & PLATT                     9.13            7.35         1.78
MPC   MARATHON PETROLE                    3.07            1.41         1.66
AZO   AUTOZONE INC                        3.72            2.10         1.62
XL    XL GROUP PLC                        2.54            0.95         1.60
CNX   CONSOL ENERGY                       4.88            3.33         1.55
TRIP  TRIPADVISOR INC                     9.00            7.58         1.42
MAS   MASCO CORP                          6.85            5.48         1.37
TIF   TIFFANY & CO                        5.64            4.27         1.36
RDC   ROWAN COMPANIES                     5.32            4.07         1.24
SVU   SUPERVALU INC                      34.50           33.27         1.23
BBY   BEST BUY CO INC                    17.35           16.24         1.10
IRM   IRON MOUNTAIN                       5.40            4.30         1.10
ANR   ALPHA NATURAL RE                    7.17            6.08         1.09
HST   HOST HOTELS & RE                    7.17            6.14         1.03
X     US STEEL CORP                      24.24           23.21         1.02
CVC   CABLEVISION SY-A                    5.82            4.84         0.98
VLO   VALERO ENERGY                       3.54            2.60         0.94

TOP 25 DECREASES IN SHORT INTEREST VS FLOAT

                                      March 15        Feb. 29    
                                  Short Interest   Short Interest   
Ticker Name                        /Free Float %   /Free Float %    Decrease % 
=============================================================================
SHLD  SEARS HOLDINGS                     30.16           34.34        -4.18
WHR   WHIRLPOOL CORP                      6.23            9.22        -2.99
TER   TERADYNE INC                        8.53           11.44        -2.90
WYNN  WYNN RESORTS LTD                    3.55            6.38        -2.83
EMC   EMC CORP/MA                         2.52            4.92        -2.40
GPS   GAP INC/THE                         5.96            7.93        -1.97
URBN  URBAN OUTFITTER                    10.43           12.04        -1.61
ZMH   ZIMMER HLDGS                        3.14            4.71        -1.57
RRD   RR DONNELLEY & S                   29.75           31.29        -1.54
TXT   TEXTRON INC                         4.74            5.94        -1.19
JWN   NORDSTROM INC                       3.57            4.62        -1.05
PDCO  PATTERSON COS                       2.87            3.85        -0.98
EXC   EXELON CORP                         5.55            6.52        -0.98
HP    HELMERICH & PAYN                    5.95            6.88        -0.93
PRGO  PERRIGO CO                          5.09            5.99        -0.91
BWA   BORGWARNER INC                     16.24           17.13        -0.89
TEG   INTEGRYS ENERGY                     4.70            5.59        -0.88
GT    GOODYEAR TIRE                       3.83            4.70        -0.87
CINF  CINCINNATI FIN                      4.99            5.78        -0.80
NVLS  NOVELLUS SYS                        7.25            8.05        -0.80
KLAC  KLA-TENCOR CORP                     4.69            5.47        -0.78
LMT   LOCKHEED MARTIN                     4.22            4.91        -0.69
NYX   NYSE EURONEXT                       1.41            2.08        -0.67
AVY   AVERY DENNISON                      6.75            7.41        -0.65
TSO   TESORO CORP                         7.81            8.46        -0.65

-- Bloomberg News

To contact Bloomberg News for this story: newsdev@bloomberg.net