GROUP ONE TRADING, L.P. Information

440 S. LASALLE STREET, CHICAGO, Illinois, 60605, (312) 347-8864

Report Date: 03/31/2014

Position Statistics

Total Positions 1,918
New Positions 468
Increased Positions 924
Decreased Positions 968
Positions with Activity 1,892
Sold Out Positions 492
Total Mkt Value (in $ millions) 968

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

Sector Weighting

Basic Materials 4.87%
Capital Goods 1.31%
Conglomerates 0.57%
Consumer Cyclical 2.49%
Consumer/Non-Cyclical 1.67%
Energy 13.96%
Financial 6.84%
Healthcare 13.81%
Services 21.62%
Technology 20.53%
Transportation 3.55%
Utilities 4.77%

1,918 Positions as of 03/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
DRYSHIPS INC SHS 2,771 -1,811 (39.53) 908,421
IDENIX PHARMACEUTICALS INC COM 2,761 2,761 New 113,475
SANCHEZ ENERGY CORP COM 2,722 1,936 246.64 82,472
FORTRESS INVESTMENT GROUP LLC CL A 2,701 1,477 120.63 359,112
DIAMONDBACK ENERGY INC COM 2,626 672 34.42 30,641
CALPINE CORP COM NEW 2,596 620 31.35 117,806
RESTORATION HARDWARE HLDGS INC COM 2,588 1,631 170.48 30,710
FIRST MAJESTIC SILVER CORP COM 2,560 1,904 290.56 243,565
NATIONSTAR MTG HLDGS INC COM 2,516 412 19.57 78,420
BIODELIVERY SCIENCES INTL INC COM 2,516 1,536 156.64 196,438
LEUCADIA NATL CORP COM 2,484 1,665 203.24 99,048
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 2,469 2,469 New 41,295
ITAU UNIBANCO HLDG SA SPON ADR REP PFD 2,425 -1,878 (43.64) 151,346
APOLLO GLOBAL MGMT LLC CL A SHS 2,421 888 57.87 89,643
NRG ENERGY INC COM NEW 2,400 66 2.84 76,565
ELDORADO GOLD CORP NEW COM 2,389 -731 (23.43) 306,670
PACIFIC ETHANOL INC COM PAR $.001 2,378 1,883 380.37 131,913
DOLLAR GEN CORP NEW COM 2,328 1,212 108.61 41,854
TYSON FOODS INC CL A 2,219 852 62.38 56,122
ARIAD PHARMACEUTICALS INC COM 2,212 -3,553 (61.63) 375,573