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	—THOMSON REUTERS CORP	28,900	$1.4M	12.10%	Call
1302	NTRNUTRIEN LTD	29,600	$1.4M	12.06%	Put
1303	ZSZSCALER INC	35,400	$1.4M	12.03%	Call
1304	—HEALTH INS INNOVATIONS INC	51,900	$1.4M	12.02%	Call
1305	TMUST MOBILE US INC	21,800	$1.4M	12.02%	Put
1306	CDECOEUR MNG INC	309,710	$1.4M	12.00%
1307	—UNION PAC CORP	10,000	$1.4M	11.98%	Put
1308	—SOGOU INC	262,800	$1.4M	11.96%	Put
1309	—II VI INC	42,400	$1.4M	11.93%	Call
1310	—AKORN INC	405,399	$1.4M	11.91%
1311	AAOIAPPLIED OPTOELECTRONICS INC	89,035	$1.4M	11.91%
1312	CRTOCRITEO S A	60,400	$1.4M	11.89%	Put
1313	—DOMINION ENERGY MIDSTRM PRTN	75,800	$1.4M	11.85%	Put
1314	—U S SILICA HLDGS INC	134,200	$1.4M	11.84%	Call
1315	DGXQUEST DIAGNOSTICS INC	16,405	$1.4M	11.84%
1316	—US BANCORP DEL	29,800	$1.4M	11.81%	Call
1317	GBTUSDGLOBAL BLOOD THERAPEUTICS IN	33,153	$1.4M	11.80%
1318	OMFONEMAIN HLDGS INC	56,000	$1.4M	11.79%	Put
1319	—MATADOR RES CO	87,500	$1.4M	11.78%	Call
1320	QUREUNIQURE NV	47,000	$1.4M	11.75%	Put
1321	ACAARCOSA INC	48,874	$1.4M	11.73%
1322	—BIG LOTS INC	46,700	$1.4M	11.71%	Call
1323	—INVESTORS BANCORP INC NEW	129,700	$1.3M	11.69%	Put
1324	PODDINSULET CORP	17,000	$1.3M	11.69%	Call
1325	—NAVISTAR INTL CORP NEW	51,700	$1.3M	11.63%	Put
1326	—PIONEER NAT RES CO	10,200	$1.3M	11.63%	Call
1327	DHRDANAHER CORP DEL	13,000	$1.3M	11.62%	Put
1328	NDLSNOODLES & CO	191,600	$1.3M	11.61%	Put
1329	YUMCYUM CHINA HLDGS INC	39,900	$1.3M	11.60%	Put
1330	POOLWHIRLPOOL CORP	12,500	$1.3M	11.58%	Call
1331	TGTTARGET CORP	20,200	$1.3M	11.57%	Call
1332	BANCBANC OF CALIFORNIA INC	100,300	$1.3M	11.57%	Put
1333	HMYHARMONY GOLD MNG LTD	744,900	$1.3M	11.56%	Call
1334	PIIMPINJ INC	91,384	$1.3M	11.53%
1335	—ROYAL BK CDA MONTREAL QUE	19,400	$1.3M	11.52%	Put
1336	—BELMOND LTD	53,100	$1.3M	11.52%	Put
1337	—ACCELERATE DIAGNOSTICS INC	115,200	$1.3M	11.49%	Call
1338	RDWRRADWARE LTD	58,200	$1.3M	11.46%	Put
1339	—EAGLE MATERIALS INC	21,600	$1.3M	11.43%	Call
1340	—CLOUDERA INC	118,800	$1.3M	11.39%	Call
1341	AERAERCAP HOLDINGS NV	33,100	$1.3M	11.36%	Call
1342	—JETBLUE AIRWAYS CORP	81,600	$1.3M	11.36%	Put
1343	OMEROMEROS CORP	117,500	$1.3M	11.35%	Call
1344	—E TRADE FINANCIAL CORP	29,800	$1.3M	11.34%	Put
1345	MLMMARTIN MARIETTA MATLS INC	7,600	$1.3M	11.32%	Call
1346	KEYSKEYSIGHT TECHNOLOGIES INC	21,000	$1.3M	11.30%	Put
1347	OMCOMNICOM GROUP INC	17,800	$1.3M	11.30%	Call
1348	OKTAOKTA INC	20,400	$1.3M	11.29%	Put
1349	YELPYELP INC	37,200	$1.3M	11.29%	Call
1350	HTTQUDIAN INC	303,500	$1.3M	11.29%	Call
1351	—CYPRESS SEMICONDUCTOR CORP	102,200	$1.3M	11.27%	Put
1352	—US BANCORP DEL	28,400	$1.3M	11.25%	Put
1353	—GENERAL MLS INC	33,300	$1.3M	11.24%	Put
1354	—CONCHO RES INC	12,600	$1.3M	11.23%	Call
1355	DKDELEK US HLDGS INC NEW	39,800	$1.3M	11.22%	Put
1356	FCXFREEPORT-MCMORAN INC	125,200	$1.3M	11.19%	Call
1357	—CHARLES RIV LABS INTL INC	11,400	$1.3M	11.18%	Call
1358	SGMOSANGAMO THERAPEUTICS INC	112,100	$1.3M	11.16%	Put
1359	KWKENNEDY-WILSON HLDGS INC	70,800	$1.3M	11.15%	Put
1360	NXSTNEXSTAR MEDIA GROUP INC	16,300	$1.3M	11.11%	Call
1361	MRKMERCK & CO INC	16,750	$1.3M	11.10%
1362	—TRANSENTERIX INC	566,503	$1.3M	11.10%
1363	TNDMTANDEM DIABETES CARE INC	33,700	$1.3M	11.10%	Call
1364	—DIGITAL RLTY TR INC	12,000	$1.3M	11.09%	Put
1365	BOOTBOOT BARN HLDGS INC	74,900	$1.3M	11.06%	Call
1366	—JINKOSOLAR HLDG CO LTD	128,900	$1.3M	11.05%	Call
1367	—KIMCO RLTY CORP	87,000	$1.3M	11.05%	Call
1368	—NATIONAL OILWELL VARCO INC	49,500	$1.3M	11.03%	Call
1369	—FIREEYE INC	78,300	$1.3M	11.00%	Call
1370	—STARWOOD PPTY TR INC	64,300	$1.3M	10.98%	Put
1371	—HARTFORD FINL SVCS GROUP INC	28,300	$1.3M	10.91%	Put
1372	IGTINTERNATIONAL GAME TECHNOLOG	85,890	$1.3M	10.90%
1373	HONHONEYWELL INTL INC	9,500	$1.3M	10.88%	Put
1374	—LUMBER LIQUIDATORS HLDGS INC	131,674	$1.3M	10.87%
1375	—GNC HLDGS INC	526,900	$1.2M	10.83%	Put
1376	SBLKSTAR BULK CARRIERS CORP	136,500	$1.2M	10.82%	Call
1377	POSTPOST HLDGS INC	14,000	$1.2M	10.82%	Call
1378	—MEET GROUP INC	269,487	$1.2M	10.82%
1379	ARWRARROWHEAD PHARMACEUTICALS IN	100,400	$1.2M	10.81%	Put
1380	—DISCOVER FINL SVCS	21,100	$1.2M	10.78%	Call
1381	FOLDAMICUS THERAPEUTICS INC	129,700	$1.2M	10.78%	Call
1382	INGNINOGEN INC	10,000	$1.2M	10.77%	Call
1383	HOLXHOLOGIC INC	30,200	$1.2M	10.76%	Call
1384	DXCDXC TECHNOLOGY CO	23,300	$1.2M	10.74%	Call
1385	WIXWIX COM LTD	13,700	$1.2M	10.73%	Put
1386	—KELLOGG CO	21,700	$1.2M	10.72%	Put
1387	DNREURDENBURY RES INC	723,162	$1.2M	10.72%
1388	—WESTROCK CO	32,700	$1.2M	10.71%	Call
1389	—CIMAREX ENERGY CO	20,000	$1.2M	10.69%	Put
1390	—SOTHEBYS	31,000	$1.2M	10.68%	Call
1391	—TRANSENTERIX INC	544,900	$1.2M	10.67%	Call
1392	SEESEALED AIR CORP NEW	35,300	$1.2M	10.66%	Put
1393	CXCEMEX SAB DE CV	254,574	$1.2M	10.64%
1394	—ACACIA COMMUNICATIONS INC	32,300	$1.2M	10.64%	Put
1395	ZSZSCALER INC	31,300	$1.2M	10.64%	Put
1396	IVZINVESCO LTD	72,957	$1.2M	10.58%
1397	—SHIP FINANCE INTERNATIONAL L	115,600	$1.2M	10.55%	Put
1398	WHWYNDHAM HOTELS & RESORTS INC	26,800	$1.2M	10.54%	Put
1399	—BROADRIDGE FINL SOLUTIONS IN	12,600	$1.2M	10.52%	Call
1400	—SPARK THERAPEUTICS INC	30,838	$1.2M	10.46%

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