GROUP ONE TRADING LLC Q4 2017 Filing

Filed February 9, 2018

Portfolio Value

$14.2T

Holdings

4,816

Report Date

Q4 2017

Filing Type

13F-HR

All Holdings (4,816 positions)

#	Stock	Shares	Value	% Portfolio	Type
1	—KEMET CORP	66,400	$1.0B	0.01%	Call
2	—ARES MGMT L P	500	$1.0B	0.01%	Call
3	—ATHENAHEALTH INC	7,500	$998.0M	0.01%	Put
4	—HORIZON PHARMA PLC	68,340	$998.0M	0.01%
5	JBTMJOHN BEAN TECHNOLOGIES CORP	9,000	$997.0M	0.01%	Put
6	—BROADRIDGE FINL SOLUTIONS IN	11,000	$996.0M	0.01%	Put
7	SOSOUTHERN CO	20,700	$995.0M	0.01%	Call
8	—PANDORA MEDIA INC	206,500	$995.0M	0.01%	Put
9	—CONCERT PHARMACEUTICALS INC	38,400	$993.0M	0.01%	Call
10	VOCVOC ENERGY TR	167,800	$993.0M	0.01%	Call
11	HCCWARRIOR MET COAL INC	39,400	$991.0M	0.01%	Put
12	DUKDUKE ENERGY CORP NEW	11,763	$989.0M	0.01%
13	BNSBANK N S HALIFAX	15,300	$987.0M	0.01%	Call
14	—RENREN INC	94,862	$986.0M	0.01%
15	—RESOLUTE FST PRODS INC	89,000	$983.0M	0.01%	Call
16	—EBIX INC	12,400	$983.0M	0.01%	Put
17	—FORTUNA SILVER MINES INC	188,400	$983.0M	0.01%	Call
18	—SOUTHWESTERN ENERGY CO	176,200	$983.0M	0.01%	Call
19	—THERAPEUTICSMD INC	161,933	$978.0M	0.01%
20	CAKECHEESECAKE FACTORY INC	20,300	$978.0M	0.01%	Put
21	—ENTELLUS MED INC	400	$976.0M	0.01%	Call
22	—ABIOMED INC	5,200	$975.0M	0.01%	Call
23	PGRPROGRESSIVE CORP OHIO	17,300	$974.0M	0.01%	Call
24	STNGSCORPIO TANKERS INC	319,224	$974.0M	0.01%
25	NATNORDIC AMERICAN TANKERS LIMI	395,700	$973.0M	0.01%	Put
26	—PAN AMERICAN SILVER CORP	62,400	$971.0M	0.01%	Call
27	—DR PEPPER SNAPPLE GROUP INC	10,000	$971.0M	0.01%	Call
28	—PACIFIC COAST OIL TR	5,000	$970.0M	0.01%	Call
29	BHPBHP BILLITON LTD	21,100	$970.0M	0.01%	Put
30	—CALGON CARBON CORP	45,500	$969.0M	0.01%	Call
31	BSBRBANCO SANTANDER BRASIL S A	1,000	$967.0M	0.01%	Call
32	—WESTPORT FUEL SYSTEMS INC	257,100	$967.0M	0.01%	Put
33	NGNOVAGOLD RES INC	245,828	$966.0M	0.01%
34	CAGCONAGRA BRANDS INC	25,619	$965.0M	0.01%
35	—TILE SHOP HLDGS INC	99,900	$959.0M	0.01%	Call
36	—FLEXION THERAPEUTICS INC	38,300	$959.0M	0.01%	Call
37	ETSYETSY INC	46,815	$957.0M	0.01%
38	MTGMGIC INVT CORP WIS	67,800	$957.0M	0.01%
39	AKAMAKAMAI TECHNOLOGIES INC	14,700	$956.0M	0.01%	Call
40	—COTT CORP QUE	57,400	$956.0M	0.01%	Call
41	PBIPITNEY BOWES INC	85,500	$956.0M	0.01%	Call
42	—U S G CORP	24,805	$956.0M	0.01%
43	NFGNATIONAL FUEL GAS CO N J	17,400	$955.0M	0.01%	Call
44	SCCOSOUTHERN COPPER CORP	20,100	$954.0M	0.01%	Put
45	—MAZOR ROBOTICS LTD	18,482	$954.0M	0.01%
46	PGRPROGRESSIVE CORP OHIO	16,900	$952.0M	0.01%	Put
47	PSXPHILLIPS 66	9,400	$951.0M	0.01%	Call
48	—AMERICAN AXLE & MFG HLDGS IN	55,800	$950.0M	0.01%	Put
49	—BGC PARTNERS INC	62,900	$950.0M	0.01%	Put
50	—TETRAPHASE PHARMACEUTICALS I	150,400	$948.0M	0.01%	Put
51	CORTCORCEPT THERAPEUTICS INC	52,500	$948.0M	0.01%	Put
52	—ZYNERBA PHARMACEUTICALS INC	75,600	$947.0M	0.01%	Call
53	—ABBOTT LABS	16,600	$947.0M	0.01%	Call
54	—DEAN FOODS CO NEW	81,900	$947.0M	0.01%	Call
55	ORCLORACLE CORP	20,000	$946.0M	0.01%	Put
56	—NET 1 UEPS TECHNOLOGIES INC	79,600	$946.0M	0.01%	Put
57	VYXNCR CORP NEW	27,800	$945.0M	0.01%	Call
58	—GENWORTH FINL INC	303,500	$944.0M	0.01%	Call
59	CXWCORECIVIC INC	41,800	$941.0M	0.01%	Put
60	VNET21VIANET GROUP INC	117,600	$938.0M	0.01%	Call
61	CVNACARVANA CO	49,000	$937.0M	0.01%	Put
62	—XINYUAN REAL ESTATE CO LTD	137,400	$936.0M	0.01%	Call
63	ARCOARCOS DORADOS HOLDINGS INC	90,400	$936.0M	0.01%	Put
64	ASMBASSEMBLY BIOSCIENCES INC	20,654	$935.0M	0.01%
65	—ORBITAL ATK INC	7,100	$934.0M	0.01%	Call
66	—ACCELERATE DIAGNOSTICS INC	35,600	$933.0M	0.01%	Put
67	—BROADSOFT INC	17,000	$933.0M	0.01%	Put
68	—CALUMET SPECIALTY PRODS PTNR	121,100	$932.0M	0.01%	Call
69	CEIXEURCONSOL ENERGY INC NEW	23,538	$930.0M	0.01%
70	—GLAXOSMITHKLINE PLC	26,200	$929.0M	0.01%	Put
71	FVICHFFORTUNA SILVER MINES INC	177,651	$927.0M	0.01%
72	—BOFI HLDG INC	31,000	$927.0M	0.01%	Call
73	—PROOFPOINT INC	10,400	$924.0M	0.01%	Put
74	—ALLIANCEBERNSTEIN HOLDING LP	36,900	$924.0M	0.01%	Call
75	FANGDIAMONDBACK ENERGY INC	7,309	$923.0M	0.01%
76	AZNASTRAZENECA PLC	26,583	$922.0M	0.01%
77	KRNTKORNIT DIGITAL LTD	57,100	$922.0M	0.01%	Put
78	NUSNU SKIN ENTERPRISES INC	13,500	$921.0M	0.01%	Call
79	GLUUGLU MOBILE INC	252,919	$921.0M	0.01%
80	DEODIAGEO P L C	6,300	$920.0M	0.01%	Put
81	—OCLARO INC	136,400	$919.0M	0.01%	Call
82	TTDTHE TRADE DESK INC	20,100	$919.0M	0.01%
83	PAAPLAINS ALL AMERN PIPELINE L	44,500	$918.0M	0.01%	Put
84	OKTAOKTA INC	35,800	$917.0M	0.01%	Call
85	—DELTIC TIMBER CORP	100	$916.0M	0.01%	Put
86	CHKEURCHESAPEAKE ENERGY CORP	230,628	$913.0M	0.01%
87	—MAZOR ROBOTICS LTD	17,700	$913.0M	0.01%	Put
88	—BROOKDALE SR LIVING INC	94,100	$913.0M	0.01%	Call
89	RGENREPLIGEN CORP	25,100	$911.0M	0.01%	Call
90	GNRCGENERAC HLDGS INC	18,400	$911.0M	0.01%	Call
91	HDHOME DEPOT INC	4,800	$910.0M	0.01%	Call
92	GOGOGOGO INC	80,400	$907.0M	0.01%	Call
93	UNITUNITI GROUP INC	50,934	$906.0M	0.01%
94	KGCKINROSS GOLD CORP	209,600	$905.0M	0.01%	Call
95	—AXOVANT SCIENCES LTD	171,800	$905.0M	0.01%	Call
96	ARCPEURVEREIT INC	116,160	$905.0M	0.01%
97	—ATARA BIOTHERAPEUTICS INC	50,000	$905.0M	0.01%	Put
98	—ENVISION HEALTHCARE CORP	26,126	$903.0M	0.01%
99	—CALPINE CORP	59,700	$903.0M	0.01%	Call
100	ANAUTONATION INC	17,600	$903.0M	0.01%	Put

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