GROUP ONE TRADING LLC Q1 2019 Filing

Filed May 13, 2019

Portfolio Value

$16.7M

Holdings

4,769

Report Date

Q1 2019

Filing Type

13F-HR

All Holdings (4,769 positions)

#	Stock	Shares	Value	% Portfolio	Type
1201	CORTCORCEPT THERAPEUTICS INC	19,000	$223K	1.34%	Call
1202	XNETXUNLEI LTD	60,846	$223K	1.34%
1203	—BLUE APRON HLDGS INC	227,800	$223K	1.34%	Call
1204	—ECHO GLOBAL LOGISTICS INC	9,000	$223K	1.34%	Put
1205	MUMICRON TECHNOLOGY INC	5,385	$223K	1.34%
1206	—NATIONAL INSTRS CORP	5,000	$222K	1.33%	Put
1207	AVNTNAVIENT CORPORATION	19,100	$221K	1.33%	Call
1208	—INTEC PHARMA LTD JERUSALEM	30,200	$221K	1.33%	Call
1209	EVRGEVERGY INC	3,800	$221K	1.33%	Call
1210	—AMERICAN OUTDOOR BRANDS CORP	23,700	$221K	1.33%	Put
1211	—INSEEGO CORP	46,800	$221K	1.33%	Put
1212	GTGOODYEAR TIRE & RUBR CO	12,095	$220K	1.32%
1213	ITTITT INC	3,800	$220K	1.32%	Call
1214	VRAVERA BRADLEY INC	16,600	$220K	1.32%	Call
1215	—PATTERSON COMPANIES INC	10,000	$219K	1.31%	Put
1216	VNDAVANDA PHARMACEUTICALS INC	11,900	$219K	1.31%	Call
1217	CSTECAESARSTONE LTD	14,053	$219K	1.31%
1218	—VEDANTA LTD	20,700	$219K	1.31%	Call
1219	SATSECHOSTAR CORP	6,000	$219K	1.31%	Call
1220	—TATA MTRS LTD	17,400	$219K	1.31%	Put
1221	—VEECO INSTRS INC DEL	20,200	$219K	1.31%	Put
1222	—SOCIEDAD QUIMICA MINERA DE C	5,700	$219K	1.31%	Call
1223	GLNGGOLAR LNG LTD BERMUDA	10,353	$218K	1.31%
1224	OECORION ENGINEERED CARBONS S A	11,500	$218K	1.31%	Call
1225	YRIYAMANA GOLD INC	83,427	$218K	1.31%
1226	HUNHUNTSMAN CORP	9,700	$218K	1.31%
1227	HUNHUNTSMAN CORP	9,700	$218K	1.31%	Call
1228	WLKWESTLAKE CHEM CORP	3,200	$217K	1.30%	Call
1229	—SOUTHWESTERN ENERGY CO	46,200	$217K	1.30%	Put
1230	DISCAUSDDISCOVERY INC	8,023	$217K	1.30%
1231	BOOTBOOT BARN HLDGS INC	7,387	$217K	1.30%
1232	—DERMIRA INC	16,000	$217K	1.30%	Put
1233	—CALLAWAY GOLF CO	13,600	$217K	1.30%	Call
1234	—CREE INC	3,782	$216K	1.30%
1235	RIGLUSDRIGEL PHARMACEUTICALS INC	83,898	$216K	1.30%
1236	IRWDIRONWOOD PHARMACEUTICALS INC	16,000	$216K	1.30%	Call
1237	AMEAMETEK INC NEW	2,600	$216K	1.30%	Call
1238	SRJSPARTANNASH CO	13,576	$215K	1.29%
1239	ARLOARLO TECHNOLOGIES INC	52,100	$215K	1.29%	Call
1240	BEBLOOM ENERGY CORP	16,537	$214K	1.28%
1241	LHCGUSDLHC GROUP INC	1,931	$214K	1.28%
1242	EFXEQUIFAX INC	1,800	$213K	1.28%	Put
1243	FTITECHNIPFMC PLC	9,052	$213K	1.28%
1244	UNMUNUM GROUP	6,300	$213K	1.28%	Put
1245	BKBANK NEW YORK MELLON CORP	4,200	$212K	1.27%	Call
1246	—EMERSON ELEC CO	3,100	$212K	1.27%	Put
1247	—SYNCHRONOSS TECHNOLOGIES INC	34,800	$212K	1.27%	Put
1248	—NATIONAL CINEMEDIA INC	30,100	$212K	1.27%	Call
1249	LPSNLIVEPERSON INC	7,300	$212K	1.27%	Call
1250	—TAUBMAN CTRS INC	4,000	$212K	1.27%	Put
1251	FIVEFIVE BELOW INC	1,700	$211K	1.27%	Call
1252	BLMNBLOOMIN BRANDS INC	10,300	$211K	1.27%	Call
1253	—RECRO PHARMA INC	35,800	$210K	1.26%	Call
1254	REZIRESIDEO TECHNOLOGIES INC	10,862	$210K	1.26%
1255	TAKTAKEDA PHARMACEUTICAL CO LTD	10,300	$210K	1.26%	Put
1256	—ABEONA THERAPEUTICS INC	28,200	$208K	1.25%	Put
1257	—MEDALLION FINL CORP	30,100	$208K	1.25%	Put
1258	DBCINVESCO DB COMMDY INDX TRCK	13,063	$208K	1.25%
1259	—HESS MIDSTREAM PARTNERS LP	9,800	$208K	1.25%	Call
1260	—LOGMEIN INC	2,600	$208K	1.25%	Call
1261	—PROTEOSTASIS THERAPEUTICS IN	164,700	$208K	1.25%	Call
1262	EDGGOLD FIELDS LTD NEW	55,881	$208K	1.25%
1263	—INSTRUCTURE INC	4,399	$207K	1.24%
1264	VRAYQVIEWRAY INC	28,045	$207K	1.24%
1265	TERTERADYNE INC	5,200	$207K	1.24%	Put
1266	OLNOLIN CORP	8,954	$207K	1.24%
1267	GMS1EURGMS INC	13,670	$207K	1.24%
1268	—ZYNERBA PHARMACEUTICALS INC	38,178	$207K	1.24%
1269	—MARINUS PHARMACEUTICALS INC	49,600	$207K	1.24%	Call
1270	PCRXPACIRA PHARMACEUTICALS INC	5,411	$206K	1.24%
1271	GDOTGREEN DOT CORP	3,400	$206K	1.24%	Call
1272	—AVALARA INC	3,700	$206K	1.24%	Call
1273	—ZIX CORP	30,000	$206K	1.24%	Put
1274	CERSCERUS CORP	33,100	$206K	1.24%	Call
1275	—ANTARES PHARMA INC	68,083	$206K	1.24%
1276	—SEAGATE TECHNOLOGY PLC	4,300	$206K	1.24%	Call
1277	—OLD REP INTL CORP	9,800	$205K	1.23%	Call
1278	STNGSCORPIO TANKERS INC	10,325	$205K	1.23%
1279	—TEEKAY LNG PARTNERS L P	13,700	$205K	1.23%	Put
1280	—SIERRA WIRELESS INC	16,600	$205K	1.23%	Put
1281	LOGILOGITECH INTL S A	5,200	$205K	1.23%	Call
1282	—QUANTENNA COMMUNICATIONS INC	8,400	$204K	1.22%	Put
1283	CP.TOCANADIAN PAC RY LTD	992	$204K	1.22%
1284	—SEASPAN CORP	23,400	$204K	1.22%	Put
1285	GAPGAP INC	7,800	$204K	1.22%	Call
1286	ATATLANTIC PWR CORP	80,731	$203K	1.22%
1287	PIIPOLARIS INDS INC	2,400	$203K	1.22%	Call
1288	—INVACARE CORP	24,300	$203K	1.22%	Call
1289	GEGGEO GROUP INC NEW	10,583	$203K	1.22%
1290	BCLIEURBRAINSTORM CELL THERAPEUTICS	46,823	$203K	1.22%
1291	—SEADRILL LTD	24,300	$202K	1.21%	Call
1292	SLDBSOLID BIOSCIENCES INC	21,910	$202K	1.21%
1293	—RUTHS HOSPITALITY GROUP INC	7,900	$202K	1.21%	Call
1294	—MUELLER WTR PRODS INC	20,000	$201K	1.21%	Call
1295	—CHINA LIFE INS CO LTD	15,000	$201K	1.21%	Call
1296	—OFFICE DEPOT INC	55,100	$200K	1.20%	Call
1297	LOBLIVE OAK BANCSHARES INC	13,700	$200K	1.20%
1298	—NORTHERN TR CORP	2,200	$199K	1.19%	Put
1299	CORAMERISOURCEBERGEN CORP	2,500	$199K	1.19%	Put
1300	SUNSUNOCO LP	6,400	$199K	1.19%	Call

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