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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 (2015Q2)
Portfolio Summary: 6,441 holdings with a total value of $1,193,257,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ISHARES NASDAQ BIOTECHNOLOGY ETF 93,859 50,687,000 4.25%
2 GOOGLE INC 82,877 43,138,000 3.62%
3 APPLE INC 230,438 28,902,000 2.42%
4 NETFLIX INC 4,026 21,057,000 1.76% Call
5 FACEBOOK INC 225,596 19,348,000 1.62%
6 BERKSHIRE HATHAWAY INC DEL 111,432 15,167,000 1.27%
7 NETFLIX INC 22,288 14,641,000 1.23%
8 AMAZON COM INC CALL 3,510 14,186,000 1.19% Call
9 INTERNATIONAL BUSINESS MACHS 82,168 13,365,000 1.12%
10 BAIDU INC 60,635 12,071,000 1.01%
11 BIOGEN INC 28,956 11,696,000 0.98%
12 GOLDMAN SACHS GROUP INC 54,419 11,362,000 0.95%
13 TESLA MTRS INC 3,907 10,933,000 0.92% Call
14 CELGENE CORP 86,419 10,001,000 0.84%
15 WILLIAMS COS INC DEL 172,169 9,880,000 0.83%
16 ISHARES TR 23,143 9,818,000 0.82% Put
17 CALL APPLE INC $110 EXP 01/20/17 AAPL 170120C00110000 11,924 9,806,000 0.82% Call
18 ALIBABA GROUP HLDG LTD 114,631 9,430,000 0.79%
19 TWITTER INC 259,058 9,383,000 0.79%
20 WYNN RESORTS LTD 94,460 9,320,000 0.78%
21 SPDR S&P 500 ETF TR PUT 17,786 9,251,000 0.78% Put
22 GOOGLE INC 4,992 9,196,000 0.77% Put
23 PEPSICO INC 94,605 8,830,000 0.74%
24 ISHARES TR 71,455 8,393,000 0.70%
25 MICRON TECHNOLOGY INC 436,254 8,219,000 0.69%
26 ISHARES TR 13,863 7,498,000 0.63% Call
27 HCA HOLDINGS INC 81,626 7,405,000 0.62%
28 AMAZON COM INC 16,711 7,254,000 0.61%
29 AVAGO TECHNOLOGIES LTD SHS 54,150 7,198,000 0.60%
30 CHIPOTLE MEXICAN GRILL INC 10,761 6,510,000 0.55%
31 ALIBABA GROUP HLDG LTD 6,544 6,459,000 0.54% Put
32 AMERICAN AIRLS GROUP INC 150,839 6,023,000 0.50%
33 SALESFORCE COM INC 86,301 6,009,000 0.50%
34 WAL-MART STORES INC 81,567 5,785,000 0.48%
35 NETFLIX INC 5,658 5,775,000 0.48% Put
36 SPDR S&P 500 ETF TR 9,095 5,731,000 0.48% Call
37 Put (aapl) Apple Inc Jan 20 17 $90 (100 Shs) 6,508 5,353,000 0.45% Put
38 QIHOO 360 TECHNOLOGY CO LTD 77,776 5,264,000 0.44%
39 PRICELINE GRP INC 1,674 4,878,000 0.41% Call
40 UNITEDHEALTH GROUP INC 39,026 4,761,000 0.40%
41 Call FB 160 Exp Jun 16, 2017 4,857 4,755,000 0.40% Call
42 AMERICAN EXPRESS CO 58,503 4,546,000 0.38%
43 MYLAN N V 66,742 4,529,000 0.38%
44 PROSHARES TR II 5,127 4,122,000 0.35% Put
45 INTEL CORP 135,473 4,120,000 0.35%
46 QUALCOMM INC 65,255 4,086,000 0.34%
47 BOEING CO 29,427 4,082,000 0.34%
48 PROSHARES TR II 5,685 3,927,000 0.33% Call
49 GOPRO INC 3,950 3,787,000 0.32% Put
50 GILEAD SCIENCES INC 4,729 3,732,000 0.31% Call
Page 1 of 129

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001488542-15-000007, filed 2015.07.08).

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.