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Institutional Investment Manager
SIMPLEX TRADING, LLC
SIMPLEX TRADING, LLC (CIK: 0001488542) incorporated in Delaware, located at 230 S. Lasalle Street, Chicago, IL. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q1)
Portfolio Summary: 6,178 holdings with a total value of $859,885,000.
#
Name
Shares
Value ($)
%
Options
Notes
151 KLA-TENCOR CORP 19,250 1,122,000 0.13%
152 E M C CORP MASS COM 43,824 1,120,000 0.13%
153 VALEANT PHARMACEUTICALS INTL 880 1,097,000 0.13% Call
154 PALO ALTO NETWORKS INC 7,494 1,094,000 0.13%
155 ISHARES 34,371 1,078,000 0.13%
156 SELECT SECTOR SPDR TR 14,857 1,077,000 0.13%
157 KOHLS 13,558 1,060,000 0.12%
158 MOSAIC CO NEW 22,978 1,058,000 0.12%
159 KRISPY KREME DOUGHNT 52,870 1,056,000 0.12%
160 EXXON MOBIL CORP 2,964 1,042,000 0.12% Put
161 PNC FINL SVCS GROUP INC 11,105 1,035,000 0.12%
162 MARKET VECTORS ETF TR 2,866 1,019,000 0.12% Put
163 WHITEWAVE FOODS CO 22,905 1,015,000 0.12%
164 FIRST SOLAR INC 16,369 978,000 0.11%
165 BERKSHIRE HATHAWAY INC DEL 2,544 970,000 0.11% Put
166 BIOMARIN PHARMACEUTICAL INC 367 969,000 0.11% Call
167 MORGAN STANLEY 27,136 968,000 0.11%
168 DISNEY WALT CO 965 963,000 0.11% Call
169 TRAVELERS COMPANIES INC 8,898 962,000 0.11%
170 PETROLEO BRASILEIRO SA PETRO 2,128 948,000 0.11% Put
171 NORTHROP GRUMMAN CORP 5,876 945,000 0.11%
172 PRECISION CASTPARTS 4,487 942,000 0.11%
173 QIHOO 360 TECHNOLOGY CO LTD 18,365 940,000 0.11%
174 UNITED STATES STL CORP NEW 1,604 936,000 0.11% Put
175 SOLARCITY CORP 996 929,000 0.11% Put
176 CREDIT SUISSE GROUP 34,474 928,000 0.11%
177 KITE PHARMA INCORPORATED 16,044 925,000 0.11%
178 INTERCEPT PHARMACEUTICALS IN 124 914,000 0.11% Call
179 CHIPOTLE MEXICAN GRILL INC 740 914,000 0.11% Put
180 REYNOLDS AMERICAN INC 13,277 914,000 0.11%
181 UNION PAC CORP 8,393 909,000 0.11%
182 DirectTV Com 10,622 903,000 0.11%
183 DIREXION SHS ETF TR 1,979 900,000 0.10% Put
184 BLUEBIRD BIO INC COM 7,441 898,000 0.10%
185 ALLERGAN PLC 3,003 893,000 0.10%
186 SPDR DOW JONES INDL AVRG ETF 1,212 887,000 0.10% Call
187 YAHOO INC 2,774 871,000 0.10% Put
188 SELECT SECTOR SPDR TR 4,176 868,000 0.10% Call
189 EXPRESS SCRIPTS HLDG CO 752 867,000 0.10% Call
190 ENSCO PLC 449 865,000 0.10% Put
191 VANGUARD INTL EQUITY INDEX F 15,866 860,000 0.10%
192 VANGUARD INDEX FDS 10,189 859,000 0.10%
193 PARTNERRE LTD 7,499 857,000 0.10%
194 FREEPORT-MCMORAN INC 44,978 852,000 0.10%
195 BIOGEN INC 1,109 851,000 0.10% Put
196 E TRADE FINANCIAL CORP 29,724 848,000 0.10%
197 CELGENE CORP 2,299 848,000 0.10% Put
198 FREEPORT-MCMORAN INC 1,264 838,000 0.10% Put
199 AMGEN INC 1,439 830,000 0.10% Call
200 ACCENTURE PLC IRELAND 8,816 825,000 0.10%
Page 4 of 124

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001488542-15-000006, filed 2015.04.21).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.