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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
1 ISHARES NASDAQ BIOTECHNOLOGY ETF 66,848 37,080,000 4.31%
2 CALL APPLE INC $110 EXP 01/20/17 AAPL 170120C00110000 16,048 15,942,000 1.85% Call
3 BERKSHIRE HATHAWAY INC DEL 85,180 12,293,000 1.43%
4 ALIBABA GROUP HLDG LTD 119,193 9,921,000 1.15%
5 SPDR S&P 500 ETF TR 47,905 9,889,000 1.15%
6 INTEL CORP 291,383 9,111,000 1.06%
7 MCDONALDS CORP 87,434 8,519,000 0.99%
8 SPDR S&P 500 ETF TR PUT 19,296 7,888,000 0.92% Put
9 GOLDMAN SACHS GROUP INC 38,591 7,253,000 0.84%
10 WAL-MART STORES INC 78,814 6,482,000 0.75%
11 AMAZON COM INC CALL 3,383 6,283,000 0.73% Call
12 PROCTER AND GAMBLE CO 72,651 5,953,000 0.69%
13 TESLA MTRS INC PUT 4,439 5,923,000 0.69% Put
14 SPDR S&P 500 ETF TR 14,886 5,832,000 0.68% Call
15 GOPRO INC 4,305 5,775,000 0.67% Put
16 GOOGLE INC 3,750 5,771,000 0.67% Put
17 CATAMARAN CORP COM 92,291 5,495,000 0.64%
18 GOOGLE INC 3,588 5,289,000 0.62% Call
19 RALPH LAUREN CORP 39,679 5,217,000 0.61%
20 ISHARES TR 11,837 5,148,000 0.60% Call
21 ALIBABA GROUP HLDG LTD 6,474 5,033,000 0.59% Put
22 NETFLIX INC 2,553 4,954,000 0.58% Put
23 MICRON TECHNOLOGY INC 174,992 4,747,000 0.55%
24 CELGENE CORP 41,185 4,747,000 0.55%
25 WALGREENS BOOTS ALLIANCE INC 55,207 4,674,000 0.54%
26 PROSHARES TR II 5,616 4,450,000 0.52% Put
27 GOOGLE INC 7,826 4,288,000 0.50%
28 PRICELINE GRP INC 1,112 4,281,000 0.50% Call
29 ANADARKO PETR 49,250 4,078,000 0.47%
30 ISHARES TR 17,479 3,817,000 0.44% Put
31 TRW AUTOMOTIVE HLDGS CORP 35,777 3,751,000 0.44%
32 SKYWORKS SOLUTIONS INC 38,154 3,750,000 0.44%
33 PHARMACYCLICS INC 799 3,714,000 0.43% Call
34 SPDR S&P MIDCAP 400 ETF TR 13,341 3,698,000 0.43%
35 CELGENE CORP 3,894 3,692,000 0.43% Call
36 ABBVIE INC 63,011 3,688,000 0.43%
37 KRAFT FOODS GROUP INC 2,362 3,584,000 0.42% Call
38 ILLUMINA INC 19,269 3,577,000 0.42%
39 TESLA MTRS INC 4,188 3,559,000 0.41% Call
40 NETFLIX INC 2,624 3,551,000 0.41% Call
41 CHIPOTLE MEXICAN GRILL INC 5,326 3,464,000 0.40%
42 Put (aapl) Apple Inc Jan 20 17 $90 (100 Shs) 8,555 3,433,000 0.40% Put
43 SCHLUMBERGER LTD 40,409 3,371,000 0.39%
44 QUALCOMM INC 48,185 3,341,000 0.39%
45 ACTAVIS PLC 1,445 3,170,000 0.37% Call
46 NETFLIX INC 7,603 3,168,000 0.37%
47 LINKEDIN CORP COM CL A 12,655 3,161,000 0.37%
48 UNITEDHEALTH GROUP INC 26,609 3,147,000 0.37%
49 Call FB 160 Exp Jun 16, 2017 7,283 3,132,000 0.36% Call
50 BIOGEN INC 642 3,068,000 0.36% Call
Page 1 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.