GROUP ONE TRADING LLC Q4 2018 Filing

Filed February 6, 2019

Portfolio Value

$11.5M

Holdings

4,844

Report Date

Q4 2018

Filing Type

13F-HR

All Holdings (4,844 positions)

#	Stock	Shares	Value	% Portfolio	Type
1301	—FITBIT INC	34,300	$170K	1.47%	Call
1302	WTTRSELECT ENERGY SVCS INC	26,913	$170K	1.47%
1303	—COMSTOCK RES INC	37,300	$169K	1.47%	Call
1304	MGYMAGNOLIA OIL & GAS CORP	15,100	$169K	1.47%	Call
1305	WTWISDOMTREE INVTS INC	25,400	$169K	1.47%	Call
1306	—ARISTA NETWORKS INC	800	$169K	1.47%	Put
1307	—WESTERN GAS PARTNERS LP	4,000	$169K	1.47%	Call
1308	URBNURBAN OUTFITTERS INC	5,100	$169K	1.47%	Put
1309	—QUANTA SVCS INC	5,600	$169K	1.47%	Put
1310	—TURQUOISE HILL RES LTD	101,600	$168K	1.46%	Call
1311	NGLNGL ENERGY PARTNERS LP	17,500	$168K	1.46%	Call
1312	TRMBTRIMBLE INC	5,100	$168K	1.46%	Put
1313	TSLATESLA INC	504,700	$168K	1.46%	Call
1314	GSGOLDMAN SACHS GROUP INC	200	$167K	1.45%	Put
1315	U6ZURANIUM ENERGY CORP	133,256	$167K	1.45%
1316	—ENERPLUS CORP	21,500	$167K	1.45%	Call
1317	PTCPTC INC	2,014	$167K	1.45%
1318	CGCARLYLE GROUP L P	10,610	$167K	1.45%
1319	KEYKEYCORP NEW	11,300	$167K	1.45%	Put
1320	NATNORDIC AMERICAN TANKERS LIMI	82,900	$166K	1.44%	Call
1321	VOYAVOYA FINL INC	4,137	$166K	1.44%
1322	—TILE SHOP HLDGS INC	30,300	$166K	1.44%	Put
1323	TSLATESLA INC	498,500	$166K	1.44%	Put
1324	—NUANCE COMMUNICATIONS INC	12,500	$165K	1.43%	Put
1325	—ABEONA THERAPEUTICS INC	23,110	$165K	1.43%
1326	OIEUROWENS ILL INC	9,538	$164K	1.42%
1327	OZKBANK OZK	7,200	$164K	1.42%	Call
1328	CENXCENTURY ALUM CO	22,378	$164K	1.42%
1329	—EQM MIDSTREAM PARTNERS LP	3,800	$164K	1.42%	Put
1330	—TEEKAY LNG PARTNERS L P	14,900	$164K	1.42%	Put
1331	HMYHARMONY GOLD MNG LTD	91,700	$164K	1.42%	Put
1332	—ANDEAVOR LOGISTICS LP	5,050	$164K	1.42%
1333	—ACELRX PHARMACEUTICALS INC	70,900	$164K	1.42%	Call
1334	VFCV F CORP	2,300	$164K	1.42%	Call
1335	—BIODELIVERY SCIENCES INTL IN	44,000	$163K	1.41%	Call
1336	SENS1GBPSENSEONICS HLDGS INC	63,007	$163K	1.41%
1337	HBMHUDBAY MINERALS INC	34,500	$163K	1.41%	Put
1338	—WENDYS CO	10,400	$162K	1.40%	Put
1339	USACUSA COMPRESSION PARTNERS LP	12,496	$162K	1.40%
1340	TLYSTILLYS INC	14,905	$162K	1.40%
1341	XIFRNEXTERA ENERGY PARTNERS LP	3,766	$162K	1.40%
1342	CAHCARDINAL HEALTH INC	3,633	$162K	1.40%
1343	UBSUBS GROUP AG	13,002	$161K	1.40%
1344	—CORE LABORATORIES N V	2,700	$161K	1.40%	Call
1345	—MADDEN STEVEN LTD	5,300	$160K	1.39%	Put
1346	—SUMMIT MATLS INC	12,900	$160K	1.39%	Call
1347	SRISTONERIDGE INC	6,492	$160K	1.39%
1348	EDRENDEAVOUR SILVER CORP	74,468	$160K	1.39%
1349	—ATLASSIAN CORP PLC	1,800	$160K	1.39%	Put
1350	ABEVAMBEV SA	40,872	$160K	1.39%
1351	CRKCOMSTOCK RES INC	35,219	$160K	1.39%
1352	—BEACON ROOFING SUPPLY INC	5,000	$159K	1.38%	Put
1353	OPTUALTICE USA INC	9,600	$159K	1.38%	Call
1354	—COHERENT INC	1,500	$159K	1.38%	Call
1355	—TOWNEBANK PORTSMOUTH VA	6,600	$158K	1.37%	Put
1356	—HAWAIIAN HOLDINGS INC	6,000	$158K	1.37%	Put
1357	ARESARES MANAGEMENT CORPORATION	8,900	$158K	1.37%	Call
1358	SGENEURSEATTLE GENETICS INC	2,794	$158K	1.37%
1359	—PROS HOLDINGS INC	5,000	$157K	1.36%	Call
1360	EVCENTRAVISION COMMUNICATIONS C	53,691	$156K	1.35%
1361	EXPDEXPEDITORS INTL WASH INC	2,291	$156K	1.35%
1362	—UNILEVER N V	2,900	$156K	1.35%	Put
1363	—VEONEER INCORPORATED	6,600	$156K	1.35%	Call
1364	—TRIBUNE PUBG CO NEW	13,800	$156K	1.35%	Call
1365	RJFRAYMOND JAMES FINANCIAL INC	2,100	$156K	1.35%	Put
1366	—APPTIO INC	4,100	$156K	1.35%	Call
1367	—HESS MIDSTREAM PARTNERS LP	9,200	$156K	1.35%	Put
1368	TGNATEGNA INC	14,359	$156K	1.35%
1369	BLDRBUILDERS FIRSTSOURCE INC	14,200	$155K	1.34%	Put
1370	—MAG SILVER CORP	21,300	$155K	1.34%	Call
1371	—PARATEK PHARMACEUTICALS INC	30,000	$154K	1.33%	Call
1372	—HABIT RESTAURANTS INC	14,700	$154K	1.33%	Call
1373	—INFINERA CORPORATION	38,700	$154K	1.33%	Put
1374	ZTOZTO EXPRESS CAYMAN INC	9,700	$154K	1.33%	Put
1375	ARLPALLIANCE RES PARTNER L P	8,800	$153K	1.33%	Call
1376	OFGOFG BANCORP	9,300	$153K	1.33%	Put
1377	PLUGPLUG POWER INC	123,500	$153K	1.33%	Call
1378	—FLEXION THERAPEUTICS INC	13,482	$153K	1.33%
1379	—SEATTLE GENETICS INC	2,700	$153K	1.33%	Call
1380	CMCM1EURCHEETAH MOBILE INC	24,960	$153K	1.33%
1381	—PROTEOSTASIS THERAPEUTICS IN	47,000	$152K	1.32%	Call
1382	—NEVRO CORP	3,900	$152K	1.32%	Put
1383	ESPRESPERION THERAPEUTICS INC NE	3,290	$151K	1.31%
1384	—PUBLIC SVC ENTERPRISE GROUP	2,900	$151K	1.31%	Call
1385	—OWENS & MINOR INC NEW	23,800	$151K	1.31%	Call
1386	NTRSNORTHERN TR CORP	1,805	$151K	1.31%
1387	—BROOKDALE SR LIVING INC	22,500	$151K	1.31%	Call
1388	—ADAMIS PHARMACEUTICALS CORP	67,305	$151K	1.31%
1389	—DIAMOND OFFSHORE DRILLING IN	15,900	$150K	1.30%	Put
1390	JBLJABIL INC	6,000	$149K	1.29%	Put
1391	BCCBOISE CASCADE CO DEL	6,253	$149K	1.29%
1392	NTAPNETAPP INC	2,500	$149K	1.29%	Put
1393	EVBGEUREVERBRIDGE INC	2,631	$149K	1.29%
1394	—REVLON INC	5,900	$149K	1.29%	Call
1395	CICIGNA CORP NEW	780,000	$148K	1.28%	Put
1396	CNDTCONDUENT INC	13,941	$148K	1.28%
1397	—BALLARD PWR SYS INC NEW	61,800	$148K	1.28%	Call
1398	TOWNTOWNEBANK PORTSMOUTH VA	6,168	$148K	1.28%
1399	CYTKCYTOKINETICS INC	23,400	$148K	1.28%	Put
1400	IRWDIRONWOOD PHARMACEUTICALS INC	14,300	$148K	1.28%	Put

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