GROUP ONE TRADING, L.P. Information

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

Report Date: 03/31/2015

Position Statistics

Total Positions 1,819
New Positions 393
Increased Positions 767
Decreased Positions 1,008
Positions with Activity 1,775
Sold Out Positions 515
Total Mkt Value (in $ millions) 873

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

Sector Weighting

Basic Materials 4.71%
Capital Goods 1.85%
Conglomerates 0.81%
Consumer Cyclical 2%
Consumer/Non-Cyclical 2.28%
Energy 10.11%
Financial 8.45%
Healthcare 23.09%
Services 14.37%
Technology 12.78%
Transportation 2.5%
Utilities 2.98%

393 New Positions as of 03/31/2015

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
MOBILEYE N V AMSTELVEEN ORD SHS 12,062 12,062 New 259,838
FIDELITY NATIONAL FINANCIAL IN FNF GROUP COM 8,977 8,977 New 236,559
RIO TINTO PLC SPONSORED ADR 6,057 6,057 New 140,301
BIOMARIN PHARMACEUTICAL INC COM 5,981 5,981 New 48,219
HERTZ GLOBAL HOLDINGS INC COM 5,860 5,860 New 297,789
PLAINS ALL AMERN PIPELINE L P UNIT LTD PARTN 5,248 5,248 New 111,349
MARKET VECTORS ETF TR GOLD MINER ETF 4,963 4,963 New 254,658
STAPLES INC COM 4,489 4,489 New 273,824
QORVO INC COM 3,386 3,386 New 41,837
INTERCEPT PHARMACEUTICALS INC COM 3,296 3,296 New 12,784
GOPRO INC CL A 2,526 2,526 New 43,159
CHARTER COMMUNICATIONS INC DEL CL A NEW 2,471 2,471 New 13,792
LINNCO LLC COM SHS LTD INT 2,445 2,445 New 236,967
PERRIGO CO PLC SHS 2,331 2,331 New 12,077
ENERGY TRANSFER PRTNRS L P UNIT LTD PARTN 2,196 2,196 New 39,238
HORIZON PHARMA PLC SHS 2,093 2,093 New 65,570
CAMERON INTERNATIONAL CORP COM 1,967 1,967 New 38,430
KROGER CO COM 1,879 1,879 New 25,741
SEATTLE GENETICS INC COM 1,766 1,766 New 40,706
CHESAPEAKE ENERGY CORP COM 1,763 1,763 New 127,226