| [ | 
 |   [ | 
 |     "WSFSL",  | 
 |     "WSFS Financial Corporation",  | 
 |     "26.3499",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/wsfsl" | 
 |   ],  | 
 |   [ | 
 |     "WSTC",  | 
 |     "West Corporation",  | 
 |     "34.78",  | 
 |     "$2.93B",  | 
 |     "2013",  | 
 |     "Miscellaneous",  | 
 |     "Business Services",  | 
 |     "http://www.nasdaq.com/symbol/wstc" | 
 |   ],  | 
 |   [ | 
 |     "WSTG",  | 
 |     "Wayside Technology Group, Inc.",  | 
 |     "17.08",  | 
 |     "$83.72M",  | 
 |     "n/a",  | 
 |     "Technology",  | 
 |     "Retail: Computer Software & Peripheral Equipment",  | 
 |     "http://www.nasdaq.com/symbol/wstg" | 
 |   ],  | 
 |   [ | 
 |     "WSTL",  | 
 |     "Westell Technologies, Inc.",  | 
 |     "1.54",  | 
 |     "$92.7M",  | 
 |     "1995",  | 
 |     "Public Utilities",  | 
 |     "Telecommunications Equipment",  | 
 |     "http://www.nasdaq.com/symbol/wstl" | 
 |   ],  | 
 |   [ | 
 |     "WTBA",  | 
 |     "West Bancorporation",  | 
 |     "17.99",  | 
 |     "$288.18M",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/wtba" | 
 |   ],  | 
 |   [ | 
 |     "WTFC",  | 
 |     "Wintrust Financial Corporation",  | 
 |     "47.69",  | 
 |     "$2.23B",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/wtfc" | 
 |   ],  | 
 |   [ | 
 |     "WTFCW",  | 
 |     "Wintrust Financial Corporation",  | 
 |     "25.25",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/wtfcw" | 
 |   ],  | 
 |   [ | 
 |     "WVFC",  | 
 |     "WVS Financial Corp.",  | 
 |     "11.5",  | 
 |     "$23.58M",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Banks",  | 
 |     "http://www.nasdaq.com/symbol/wvfc" | 
 |   ],  | 
 |   [ | 
 |     "WVVI",  | 
 |     "Willamette Valley Vineyards, Inc.",  | 
 |     "5.9499",  | 
 |     "$28.93M",  | 
 |     "n/a",  | 
 |     "Consumer Non-Durables",  | 
 |     "Beverages (Production/Distribution)",  | 
 |     "http://www.nasdaq.com/symbol/wvvi" | 
 |   ],  | 
 |   [ | 
 |     "WWD",  | 
 |     "Woodward, Inc.",  | 
 |     "48.75",  | 
 |     "$3.17B",  | 
 |     "n/a",  | 
 |     "Energy",  | 
 |     "Industrial Machinery/Components",  | 
 |     "http://www.nasdaq.com/symbol/wwd" | 
 |   ],  | 
 |   [ | 
 |     "WWWW",  | 
 |     "Web.com Group, Inc.",  | 
 |     "18.01",  | 
 |     "$946.04M",  | 
 |     "n/a",  | 
 |     "Technology",  | 
 |     "Computer Software: Prepackaged Software",  | 
 |     "http://www.nasdaq.com/symbol/wwww" | 
 |   ],  | 
 |   [ | 
 |     "WYNN",  | 
 |     "Wynn Resorts, Limited",  | 
 |     "158.47",  | 
 |     "$16.06B",  | 
 |     "2002",  | 
 |     "Consumer Services",  | 
 |     "Hotels/Resorts",  | 
 |     "http://www.nasdaq.com/symbol/wynn" | 
 |   ],  | 
 |   [ | 
 |     "XBKS",  | 
 |     "Xenith Bankshares, Inc.",  | 
 |     "6.4001",  | 
 |     "$82.71M",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/xbks" | 
 |   ],  | 
 |   [ | 
 |     "XCRA",  | 
 |     "Xcerra Corporation",  | 
 |     "8.68",  | 
 |     "$472.42M",  | 
 |     "n/a",  | 
 |     "Capital Goods",  | 
 |     "Electrical Products",  | 
 |     "http://www.nasdaq.com/symbol/xcra" | 
 |   ],  | 
 |   [ | 
 |     "XENE",  | 
 |     "Xenon Pharmaceuticals Inc.",  | 
 |     "19.38",  | 
 |     "$274.83M",  | 
 |     "2014",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/xene" | 
 |   ],  | 
 |   [ | 
 |     "XENT",  | 
 |     "Intersect ENT, Inc.",  | 
 |     "22.7",  | 
 |     "$530.65M",  | 
 |     "2014",  | 
 |     "Health Care",  | 
 |     "Medical/Dental Instruments",  | 
 |     "http://www.nasdaq.com/symbol/xent" | 
 |   ],  | 
 |   [ | 
 |     "XGTI",  | 
 |     "XG Technology, Inc",  | 
 |     "0.49",  | 
 |     "$12.26M",  | 
 |     "2013",  | 
 |     "Consumer Durables",  | 
 |     "Telecommunications Equipment",  | 
 |     "http://www.nasdaq.com/symbol/xgti" | 
 |   ],  | 
 |   [ | 
 |     "XGTIW",  | 
 |     "XG Technology, Inc",  | 
 |     "0.26",  | 
 |     "n/a",  | 
 |     "2013",  | 
 |     "Consumer Durables",  | 
 |     "Telecommunications Equipment",  | 
 |     "http://www.nasdaq.com/symbol/xgtiw" | 
 |   ],  | 
 |   [ | 
 |     "XIV",  | 
 |     "VelocityShares Daily Inverse VIX Short Term ETN",  | 
 |     "31.285",  | 
 |     "$485.35M",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Investment Bankers/Brokers/Service",  | 
 |     "http://www.nasdaq.com/symbol/xiv" | 
 |   ],  | 
 |   [ | 
 |     "XLNX",  | 
 |     "Xilinx, Inc.",  | 
 |     "41.675",  | 
 |     "$10.9B",  | 
 |     "1990",  | 
 |     "Technology",  | 
 |     "Semiconductors",  | 
 |     "http://www.nasdaq.com/symbol/xlnx" | 
 |   ],  | 
 |   [ | 
 |     "XLRN",  | 
 |     "Acceleron Pharma Inc.",  | 
 |     "39.98",  | 
 |     "$1.29B",  | 
 |     "2013",  | 
 |     "Health Care",  | 
 |     "Biotechnology: Biological Products (No Diagnostic Substances)",  | 
 |     "http://www.nasdaq.com/symbol/xlrn" | 
 |   ],  | 
 |   [ | 
 |     "XNCR",  | 
 |     "Xencor, Inc.",  | 
 |     "15.06",  | 
 |     "$473.52M",  | 
 |     "2013",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/xncr" | 
 |   ],  | 
 |   [ | 
 |     "XNET",  | 
 |     "Xunlei Limited",  | 
 |     "7.25",  | 
 |     "$471.36M",  | 
 |     "2014",  | 
 |     "Technology",  | 
 |     "Computer Software: Prepackaged Software",  | 
 |     "http://www.nasdaq.com/symbol/xnet" | 
 |   ],  | 
 |   [ | 
 |     "XNPT",  | 
 |     "XenoPort, Inc.",  | 
 |     "7.19",  | 
 |     "$447.49M",  | 
 |     "2005",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/xnpt" | 
 |   ],  | 
 |   [ | 
 |     "XOMA",  | 
 |     "XOMA Corporation",  | 
 |     "4.05",  | 
 |     "$469.36M",  | 
 |     "1986",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/xoma" | 
 |   ],  | 
 |   [ | 
 |     "XONE",  | 
 |     "The ExOne Company",  | 
 |     "16.32",  | 
 |     "$235.71M",  | 
 |     "2013",  | 
 |     "Capital Goods",  | 
 |     "Industrial Machinery/Components",  | 
 |     "http://www.nasdaq.com/symbol/xone" | 
 |   ],  | 
 |   [ | 
 |     "XOOM",  | 
 |     "Xoom Corporation",  | 
 |     "16.43",  | 
 |     "$631.69M",  | 
 |     "2013",  | 
 |     "Finance",  | 
 |     "Investment Bankers/Brokers/Service",  | 
 |     "http://www.nasdaq.com/symbol/xoom" | 
 |   ],  | 
 |   [ | 
 |     "XPLR",  | 
 |     "Xplore Technologies Corp",  | 
 |     "6.82",  | 
 |     "$57.83M",  | 
 |     "n/a",  | 
 |     "Technology",  | 
 |     "Computer Manufacturing",  | 
 |     "http://www.nasdaq.com/symbol/xplr" | 
 |   ],  | 
 |   [ | 
 |     "XRAY",  | 
 |     "DENTSPLY International Inc.",  | 
 |     "52.53",  | 
 |     "$7.43B",  | 
 |     "1987",  | 
 |     "Health Care",  | 
 |     "Medical/Dental Instruments",  | 
 |     "http://www.nasdaq.com/symbol/xray" | 
 |   ],  | 
 |   [ | 
 |     "XTLB",  | 
 |     "XTL Biopharmaceuticals Ltd.",  | 
 |     "2.21",  | 
 |     "$25.73M",  | 
 |     "n/a",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/xtlb" | 
 |   ],  | 
 |   [ | 
 |     "XXIA",  | 
 |     "Ixia",  | 
 |     "10.45",  | 
 |     "$819.24M",  | 
 |     "2000",  | 
 |     "Capital Goods",  | 
 |     "Electrical Products",  | 
 |     "http://www.nasdaq.com/symbol/xxia" | 
 |   ],  | 
 |   [ | 
 |     "YDIV",  | 
 |     "First Trust NASDAQ Technology Dividend Index Fund",  | 
 |     "19.3412",  | 
 |     "$12.57M",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "http://www.nasdaq.com/symbol/ydiv" | 
 |   ],  | 
 |   [ | 
 |     "YDLE",  | 
 |     "Yodlee, Inc.",  | 
 |     "13.01",  | 
 |     "$380.3M",  | 
 |     "2014",  | 
 |     "Technology",  | 
 |     "Computer Software: Prepackaged Software",  | 
 |     "http://www.nasdaq.com/symbol/ydle" | 
 |   ],  | 
 |   [ | 
 |     "YHOO",  | 
 |     "Yahoo! Inc.",  | 
 |     "44.11",  | 
 |     "$41.79B",  | 
 |     "1996",  | 
 |     "Technology",  | 
 |     "EDP Services",  | 
 |     "http://www.nasdaq.com/symbol/yhoo" | 
 |   ],  | 
 |   [ | 
 |     "YNDX",  | 
 |     "Yandex N.V.",  | 
 |     "17.01",  | 
 |     "$5.41B",  | 
 |     "2011",  | 
 |     "Technology",  | 
 |     "Computer Software: Programming, Data Processing",  | 
 |     "http://www.nasdaq.com/symbol/yndx" | 
 |   ],  | 
 |   [ | 
 |     "YOD",  | 
 |     "You On Demand Holdings, Inc.",  | 
 |     "2.25",  | 
 |     "$53.4M",  | 
 |     "n/a",  | 
 |     "Consumer Services",  | 
 |     "Television Services",  | 
 |     "http://www.nasdaq.com/symbol/yod" | 
 |   ],  | 
 |   [ | 
 |     "YORW",  | 
 |     "The York Water Company",  | 
 |     "23.07",  | 
 |     "$295.51M",  | 
 |     "n/a",  | 
 |     "Public Utilities",  | 
 |     "Water Supply",  | 
 |     "http://www.nasdaq.com/symbol/yorw" | 
 |   ],  | 
 |   [ | 
 |     "YPRO",  | 
 |     "AdvisorShares YieldPro ETF",  | 
 |     "23.94",  | 
 |     "$68.23M",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "http://www.nasdaq.com/symbol/ypro" | 
 |   ],  | 
 |   [ | 
 |     "YRCW",  | 
 |     "YRC Worldwide, Inc.",  | 
 |     "19.96",  | 
 |     "$623.91M",  | 
 |     "n/a",  | 
 |     "Transportation",  | 
 |     "Trucking Freight/Courier Services",  | 
 |     "http://www.nasdaq.com/symbol/yrcw" | 
 |   ],  | 
 |   [ | 
 |     "YY",  | 
 |     "YY Inc.",  | 
 |     "61.82",  | 
 |     "$3.5B",  | 
 |     "2012",  | 
 |     "Technology",  | 
 |     "EDP Services",  | 
 |     "http://www.nasdaq.com/symbol/yy" | 
 |   ],  | 
 |   [ | 
 |     "Z",  | 
 |     "Zillow Group, Inc.",  | 
 |     "125.42",  | 
 |     "$5.12B",  | 
 |     "2011",  | 
 |     "Miscellaneous",  | 
 |     "Business Services",  | 
 |     "http://www.nasdaq.com/symbol/z" | 
 |   ],  | 
 |   [ | 
 |     "ZAGG",  | 
 |     "ZAGG Inc",  | 
 |     "6.51",  | 
 |     "$197.48M",  | 
 |     "n/a",  | 
 |     "Consumer Services",  | 
 |     "Other Specialty Stores",  | 
 |     "http://www.nasdaq.com/symbol/zagg" | 
 |   ],  | 
 |   [ | 
 |     "ZAZA",  | 
 |     "ZaZa Energy Corporation",  | 
 |     "2.11",  | 
 |     "$27.28M",  | 
 |     "n/a",  | 
 |     "Energy",  | 
 |     "Oil & Gas Production",  | 
 |     "http://www.nasdaq.com/symbol/zaza" | 
 |   ],  | 
 |   [ | 
 |     "ZBRA",  | 
 |     "Zebra Technologies Corporation",  | 
 |     "91",  | 
 |     "$4.63B",  | 
 |     "1991",  | 
 |     "Technology",  | 
 |     "Industrial Machinery/Components",  | 
 |     "http://www.nasdaq.com/symbol/zbra" | 
 |   ],  | 
 |   [ | 
 |     "ZEUS",  | 
 |     "Olympic Steel, Inc.",  | 
 |     "16.35",  | 
 |     "$179.56M",  | 
 |     "1994",  | 
 |     "Basic Industries",  | 
 |     "Metal Fabrications",  | 
 |     "http://www.nasdaq.com/symbol/zeus" | 
 |   ],  | 
 |   [ | 
 |     "ZFGN",  | 
 |     "Zafgen, Inc.",  | 
 |     "40.64",  | 
 |     "$1.08B",  | 
 |     "2014",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/zfgn" | 
 |   ],  | 
 |   [ | 
 |     "ZGNX",  | 
 |     "Zogenix, Inc.",  | 
 |     "1.55",  | 
 |     "$237.21M",  | 
 |     "2010",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/zgnx" | 
 |   ],  | 
 |   [ | 
 |     "ZHNE",  | 
 |     "Zhone Technologies, Inc.",  | 
 |     "1.54",  | 
 |     "$50.05M",  | 
 |     "n/a",  | 
 |     "Public Utilities",  | 
 |     "Telecommunications Equipment",  | 
 |     "http://www.nasdaq.com/symbol/zhne" | 
 |   ],  | 
 |   [ | 
 |     "ZINC",  | 
 |     "Horsehead Holding Corp.",  | 
 |     "13.49",  | 
 |     "$763.52M",  | 
 |     "2007",  | 
 |     "Capital Goods",  | 
 |     "Metal Fabrications",  | 
 |     "http://www.nasdaq.com/symbol/zinc" | 
 |   ],  | 
 |   [ | 
 |     "ZION",  | 
 |     "Zions Bancorporation",  | 
 |     "26.33",  | 
 |     "$5.34B",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/zion" | 
 |   ],  | 
 |   [ | 
 |     "ZIONW",  | 
 |     "Zions Bancorporation",  | 
 |     "3.4",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/zionw" | 
 |   ],  | 
 |   [ | 
 |     "ZIONZ",  | 
 |     "Zions Bancorporation",  | 
 |     "2.45",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Major Banks",  | 
 |     "http://www.nasdaq.com/symbol/zionz" | 
 |   ],  | 
 |   [ | 
 |     "ZIOP",  | 
 |     "ZIOPHARM Oncology Inc",  | 
 |     "9.56",  | 
 |     "$1.11B",  | 
 |     "n/a",  | 
 |     "Health Care",  | 
 |     "Medical Specialities",  | 
 |     "http://www.nasdaq.com/symbol/ziop" | 
 |   ],  | 
 |   [ | 
 |     "ZIV",  | 
 |     "VelocityShares Daily Inverse VIX Medium Term ETN",  | 
 |     "41.1",  | 
 |     "$37.81M",  | 
 |     "n/a",  | 
 |     "Finance",  | 
 |     "Investment Bankers/Brokers/Service",  | 
 |     "http://www.nasdaq.com/symbol/ziv" | 
 |   ],  | 
 |   [ | 
 |     "ZIXI",  | 
 |     "Zix Corporation",  | 
 |     "3.81",  | 
 |     "$216.48M",  | 
 |     "n/a",  | 
 |     "Technology",  | 
 |     "EDP Services",  | 
 |     "http://www.nasdaq.com/symbol/zixi" | 
 |   ],  | 
 |   [ | 
 |     "ZLTQ",  | 
 |     "ZELTIQ Aesthetics, Inc.",  | 
 |     "34.23",  | 
 |     "$1.3B",  | 
 |     "2011",  | 
 |     "Health Care",  | 
 |     "Biotechnology: Electromedical & Electrotherapeutic Apparatus",  | 
 |     "http://www.nasdaq.com/symbol/zltq" | 
 |   ],  | 
 |   [ | 
 |     "ZN",  | 
 |     "Zion Oil & Gas Inc",  | 
 |     "1.85",  | 
 |     "$65.29M",  | 
 |     "n/a",  | 
 |     "Energy",  | 
 |     "Oil & Gas Production",  | 
 |     "http://www.nasdaq.com/symbol/zn" | 
 |   ],  | 
 |   [ | 
 |     "ZNGA",  | 
 |     "Zynga Inc.",  | 
 |     "2.32",  | 
 |     "$2.09B",  | 
 |     "2011",  | 
 |     "Technology",  | 
 |     "EDP Services",  | 
 |     "http://www.nasdaq.com/symbol/znga" | 
 |   ],  | 
 |   [ | 
 |     "ZNWAA",  | 
 |     "Zion Oil & Gas Inc",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "n/a",  | 
 |     "Energy",  | 
 |     "Oil & Gas Production",  | 
 |     "http://www.nasdaq.com/symbol/znwaa" | 
 |   ],  | 
 |   [ | 
 |     "ZSAN",  | 
 |     "Zosano Pharma Corporation",  | 
 |     "11.09",  | 
 |     "$131.04M",  | 
 |     "2015",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/zsan" | 
 |   ],  | 
 |   [ | 
 |     "ZSPH",  | 
 |     "ZS Pharma, Inc.",  | 
 |     "50.51",  | 
 |     "$1.05B",  | 
 |     "2014",  | 
 |     "Health Care",  | 
 |     "Major Pharmaceuticals",  | 
 |     "http://www.nasdaq.com/symbol/zsph" | 
 |   ],  | 
 |   [ | 
 |     "ZU",  | 
 |     "zulily, inc.",  | 
 |     "14.4",  | 
 |     "$1.8B",  | 
 |     "2013",  | 
 |     "Consumer Services",  | 
 |     "Catalog/Specialty Distribution",  | 
 |     "http://www.nasdaq.com/symbol/zu" | 
 |   ],  | 
 |   [ | 
 |     "ZUMZ",  | 
 |     "Zumiez Inc.",  | 
 |     "38.77",  | 
 |     "$1.13B",  | 
 |     "2005",  | 
 |     "Consumer Services",  | 
 |     "Clothing/Shoe/Accessory Stores",  | 
 |     "http://www.nasdaq.com/symbol/zumz" | 
 |   ] | 
 | ] |