| W split history Wayfair Inc | NYSE | Cyclical Consumer Goods & Services |
| WAB split history Westinghouse Air Brake Technologies Corp | NYSE | Industrials |
| WABC split history Westamerica Bancorporation | NASDAQ | Financials |
| WAC split history Walter Investment Management Corp | NYSE | Financials |
| WACLY split history Wacoal Holdings Corporation (ADR) | NASDAQ | Cyclical Consumer Goods & Services |
| WAFD split history Washington Federal Inc. | NASDAQ | Financials |
| WAG split history Walgreen Company | NYSE | Non-Cyclical Consumer Goods & Services |
| WAGE split history Wageworks Inc | NYSE | Industrials |
| WAIN split history Wainwright Bank & Trust | NASDAQ | Financials |
| WAIR split history Wesco Aircraft Holdings Inc | NYSE | Industrials |
| WAL split history Western Alliance Bancorporation | NYSE | Financials |
| WASH split history Washington Trust Bancorp | NASDAQ | Financials |
| WAT split history Waters Corporation | NYSE | Healthcare |
| WATG split history Wonder Auto Technology, Inc. | NASDAQ | Cyclical Consumer Goods & Services |
| WATT split history Energous Corp | NASDAQ | Technology |
| WAVE split history Nextwave Wireless Inc. | NASDAQ | Technology |
| WAVX split history Wave Systems Corp. | NASDAQ | Technology |
| WAYN split history Wayne Savings Bancshares, Inc | NASDAQ | Financials |
| WB split history Weibo Corp (ADR) | NASDAQ | Technology |
| WBAI split history 500.com Ltd | NYSE | Cyclical Consumer Goods & Services |
| WBB split history Westbury Bancorp Inc | NASDAQ | Financials |
| WBC split history WABCO Holdings Inc. | NYSE | Cyclical Consumer Goods & Services |
| WBCO split history Washington Banking Co | NASDAQ | Financials |
| WBD split history Wimm-Bill-Dann Foods OJSC (ADR) | NYSE | Non-Cyclical Consumer Goods & Services |
| WBK split history Westpac Banking Corp (ADR) | NYSE | Financials |
| WBKC split history WOLVERINE BANCORP, INC. | NASDAQ | Financials |
| WBMD split history WebMD Health Corp. | NASDAQ | Technology |
| WBNK split history Waccamaw Bankshares, Inc. | NASDAQ | Financials |
| WBS split history Webster Financial Corporation | NYSE | Financials |
| WBSN split history Websense Inc. | NASDAQ | Technology |
| WCAA split history WCA Waste Corporation | NASDAQ | Services |
| WCBO split history West Coast Bancorp | NASDAQ | Financials |
| WCC split history WESCO International, Inc. | NYSE | Industrials |
| WCG split history WellCare Health Plans, Inc. | NYSE | Healthcare |
| WCIC split history WCI Communities Inc | NYSE | Cyclical Consumer Goods & Services |
| WCN split history Waste Connections, Inc. | NYSE | Industrials |
| WCRX split history Warner Chilcott Plc | NASDAQ | Healthcare |
| WD split history Walker & Dunlop, Inc. | NYSE | Financials |
| WDAY split history Workday Inc | NYSE | Technology |
| WDC split history Western Digital Corp | NASDAQ | Technology |
| WDFC split history WD-40 Company | NASDAQ | Non-Cyclical Consumer Goods & Services |
| WDR split history Waddell & Reed Financial, Inc. | NYSE | Financials |
| WEA split history Western Asset Premier Bond Fund | NYSE | Financials |
| WEBK split history Wellesley Bancorp Inc | NASDAQ | Financials |
| WEBM split history WebMediaBrands Inc | NASDAQ | Technology |
| WEC split history Wisconsin Energy Corp | NYSE | Utilities |
| WEL split history Boots & Coots, Inc. | AMEX | Energy |
| WEN split history The Wendy's Co | NASDAQ | Cyclical Consumer Goods & Services |
| WERN split history Werner Enterprises, Inc. | NASDAQ | Industrials |
| WES split history Western Gas Partners, LP | NYSE | Energy |
| WETF split history WisdomTree Investments, Inc. | NASDAQ | Financials |
| WEX split history WEX Inc | NYSE | Industrials |
| WEYS split history Weyco Group, Inc. | NASDAQ | Cyclical Consumer Goods & Services |
| WF split history Woori Finance Holdings Co., Ltd. (ADR) | NYSE | Financials |
| WFBI split history WashingtonFirst Bankshares Inc | NASDAQ | Financials |
| WFC split history Wells Fargo & Co | NYSE | Financials |
| WFD split history Westfield Financial, Inc. | NASDAQ | Financials |
| WFM split history Whole Foods Market, Inc. | NASDAQ | Non-Cyclical Consumer Goods & Services |
| WFMI split history Whole Foods Market, Inc. | NASDAQ | Services |
| WFR split history MEMC Electronic Materials, Inc. | NYSE | Technology |
| WFSL split history Washington Federal Inc. | NASDAQ | Financials |
| WFT split history Weatherford International Ltd | NYSE | Energy |
| WG split history Willbros Group Inc | NYSE | Energy |
| WGA split history AG&E Holdings Inc | NYSEMKT | Technology |
| WGBS split history WaferGen Bio-systems, Inc. | NASDAQ | Healthcare |
| WGL split history WGL Holdings Inc | NYSE | Utilities |
| WGO split history Winnebago Industries, Inc. | NYSE | Cyclical Consumer Goods & Services |
| WGOV split history Woodward Governor Company | NASDAQ | Industrials |
| WGP split history Western Gas Equity Partners LP | NYSE | Energy |
| WH split history WSP Holdings Limited (ADR) | NYSE | Energy |
| WHF split history WhiteHorse Finance Inc | NASDAQ | Financials |
| WHG split history Westwood Holdings Group, Inc. | NYSE | Financials |
| WHI split history W Holding Company, Inc. | NYSE | Financials |
| WHLM split history Wilhelmina International Inc | NASDAQ | Industrials |
| WHLR split history Wheeler Real Estate Investment Trust Inc | NASDAQ | Financials |
| WHR split history Whirlpool Corporation | NYSE | Cyclical Consumer Goods & Services |
| WHRT split history WorldHeart Corporation (USA) | NASDAQ | Healthcare |
| WHX split history Whiting USA Trust | NYSE | Energy |
| WHZ split history Whiting USA Trust II | NYSE | Energy |
| WIA split history Western Ast Clymr Infl Lkd Sc & Incm Fd | NYSE | Financials |
| WIBC split history Wilshire Bancorp Inc | NASDAQ | Financials |
| WIFI split history Boingo Wireless Inc | NASDAQ | Technology |
| WILC split history G Willi-Food International Ltd | NASDAQ | Non-Cyclical Consumer Goods & Services |
| WILN split history Wi-LAN Inc - US listing | NASDAQ | Technology |
| WIN split history Windstream Corporation | NASDAQ | Non-Cyclical Consumer Goods & Services |
| WINA split history Winmark Corporation | NASDAQ | Cyclical Consumer Goods & Services |
| WINN split history Winn-Dixie Stores, Inc. | NASDAQ | Services |
| WIRE split history Encore Wire Corporation | NASDAQ | Industrials |
| WIT split history Wipro Limited (ADR) | NYSE | Technology |
| WIW split history Wstrn Ast Clymr Infltn Lkd Opts & Inc Fd | NYSE | Financials |
| WIX split history Wix.Com Ltd | NASDAQ | Technology |
| WL split history Wilmington Trust Corporation | NYSE | Financials |
| WLB split history Westmoreland Coal Company | NASDAQ | Energy |
| WLBPZ split history Westmoreland Coal Company | NASDAQ | Energy |
| WLDN split history Willdan Group, Inc. | NASDAQ | Industrials |
| WLFC split history Willis Lease Finance Corporation | NASDAQ | Financials |
| WLFCP split history Willis Lease Finance Corporation | NASDAQ | Services |
| WLH split history William Lyon Homes | NYSE | Cyclical Consumer Goods & Services |
| WLK split history Westlake Chemical Corporation | NYSE | Basic Materials |
| WLKP split history Westlake Chemical Partners LP | NYSE | Basic Materials |
| WLL split history Whiting Petroleum Corp | NYSE | Energy |
| WLP split history WellPoint Inc | NYSE | Financials |
| WLRHU split history WL Ross Holding Corp | NASDAQ | Financials |
| WLT split history Walter Energy, Inc. | NYSE | Energy |
| WM split history Waste Management, Inc. | NYSE | Industrials |
| WMAR split history West Marine, Inc. | NASDAQ | Cyclical Consumer Goods & Services |
| WMB split history Williams Companies, Inc. | NYSE | Energy |
| WMC split history Western Asset Mortgage Capital Corp | NYSE | Financials |
| WMCO split history Williams Controls, Inc. | NYSEAMEX | Cyclical Consumer Goods & Services |
| WMG split history Warner Music Group Corp. | NYSE | Services |
| WMGI split history Wright Medical Group Inc | NASDAQ | Healthcare |
| WMK split history Weis Markets, Inc. | NYSE | Non-Cyclical Consumer Goods & Services |
| WMS split history Advanced Drainage Systems Inc | NYSE | Cyclical Consumer Goods & Services |
| WMT split history Wal-Mart Stores, Inc. | NYSE | Cyclical Consumer Goods & Services |
| WMZ split history Williams Pipeline Partners L.P. | NYSE | Utilities |
| WNC split history Wabash National Corporation | NYSE | Industrials |
| WNI split history Schiff Nutrition International Inc. | NYSE | Healthcare |
| WNR split history Western Refining, Inc. | NYSE | Energy |
| WNRL split history Western Refining Logistics LP | NYSE | Energy |
| WNS split history WNS (Holdings) Limited (ADR) | NYSE | Industrials |
| WOLF split history Great Wolf Resorts, Inc. | NASDAQ | Services |
| WOOD split history iShares S&P Global Timbr & Frstry Idx | NASDAQ | Financials |
| WOOF split history VCA Inc | NASDAQ | Healthcare |
| WOR split history Worthington Industries, Inc. | NYSE | Basic Materials |
| WPC split history W. P. Carey & Co. LLC | NYSE | Non-Cyclical Consumer Goods & Services |
| WPCS split history WPCS International Incorporated | NASDAQ | Telecommunications Services |
| WPG split history Washington Prime Group Inc | NYSE | Financials |
| WPI split history Watson Pharmaceuticals, Inc. | NYSE | Healthcare |
| WPO split history The Washington Post Company | NYSE | Services |
| WPP split history Wausau Paper Corp. | NYSE | Basic Materials |
| WPPGY split history WPP PLC (ADR) | NASDAQ | Non-Cyclical Consumer Goods & Services |
| WPRT split history Westport Innovations Inc. (USA) | NASDAQ | Cyclical Consumer Goods & Services |
| WPT split history World Point Terminals LP | NYSE | Energy |
| WPX split history WPX Energy Inc | NYSE | Energy |
| WPZ split history Williams Partners L.P. | NYSE | Energy |
| WR split history Westar Energy Inc | NYSE | Utilities |
| WRB split history W.R. Berkley Corporation | NYSE | Financials |
| WRC split history The Warnaco Group, Inc. | NYSE | Cyclical Consumer Goods & Services |
| WRE split history Washington Real Estate Investment Trust | NYSE | Financials |
| WRES split history Warren Resources, Inc. | NASDAQ | Energy |
| WRI split history Weingarten Realty Investors | NYSE | Financials |
| WRLD split history World Acceptance Corp. | NASDAQ | Financials |
| WRLS split history Telular Corporation | NASDAQ | Technology |
| WSB split history WSB Holdings, Inc. | NASDAQ | Financials |
| WSBC split history WesBanco, Inc. | NASDAQ | Financials |
| WSBF split history Waterstone Financial, Inc. | NASDAQ | Financials |
| WSC split history Wesco Financial Corporation | AMEX | Financials |
| WSCI split history WSI Industries, Inc. | NASDAQ | Industrials |
| WSFS split history WSFS Financial Corporation | NASDAQ | Financials |
| WSH split history Willis Group Holdings PLC | NYSE | Financials |
| WSII split history Waste Services, Inc. | NASDAQ | Services |
| WSM split history Williams-Sonoma, Inc. | NYSE | Cyclical Consumer Goods & Services |
| WSO split history Watsco Inc | NYSE | Industrials |
| WSO-B split history Watsco Inc | NYSE | Industrials |
| WSR split history Whitestone REIT | NYSE | Financials |
| WST split history West Pharmaceutical Services Inc. | NYSE | Healthcare |
| WSTC split history West Corp | NASDAQ | Telecommunications Services |
| WSTG split history Wayside Technology Group, Inc. | NASDAQ | Technology |
| WSTL split history Westell Technologies Inc. | NASDAQ | Technology |
| WTBA split history West Bancorporation, Inc. | NASDAQ | Financials |
| WTFC split history Wintrust Financial Corp | NASDAQ | Financials |
| WTI split history W&T Offshore, Inc. | NYSE | Energy |
| WTM split history White Mountains Insurance Group Ltd | NYSE | Financials |
| WTNY split history Whitney Holding Corp. | NASDAQ | Financials |
| WTR split history Aqua America Inc | NYSE | Utilities |
| WTS split history Watts Water Technologies Inc | NYSE | Industrials |
| WTSL split history The Wet Seal, Inc. | NASDAQ | Cyclical Consumer Goods & Services |
| WTSLA split history The Wet Seal, Inc. | NASDAQ | Services |
| WTT split history Wireless Telecom Group Inc | NYSEMKT | Industrials |
| WTU split history Williams Coal Seam Gas Royalty Trust | NYSE | Financials |
| WTW split history Weight Watchers International, Inc. | NYSE | Non-Cyclical Consumer Goods & Services |
| WU split history The Western Union Company | NYSE | Industrials |
| WUBA split history 58.com Inc (ADR) | NYSE | Technology |
| WUHN split history Wuhan General Group China Inc. | NASDAQ | Industrials |
| WVFC split history WVS Financial Corp. | NASDAQ | Financials |
| WVVI split history Willamette Valley Vineyards, Inc. | NASDAQ | Non-Cyclical Consumer Goods & Services |
| WWAV split history WhiteWave Foods Co | NYSE | Non-Cyclical Consumer Goods & Services |
| WWAY split history Westway Group, Inc. | NASDAQ | Industrials |
| WWD split history Woodward Inc | NASDAQ | Industrials |
| WWE split history World Wrestling Entertainment, Inc. | NYSE | Cyclical Consumer Goods & Services |
| WWIN split history Winner Medical Group, Inc | NASDAQ | Healthcare |
| WWON split history Westwood One, Inc. | NASDAQ | Services |
| WWVY split history Warwick Valley Telephone Company | NASDAQ | Services |
| WWW split history Wolverine World Wide, Inc. | NYSE | Cyclical Consumer Goods & Services |
| WWWW split history Web.com Group Inc | NASDAQ | Technology |
| WX split history WuXi PharmaTech (Cayman) Inc. (ADR) | NYSE | Healthcare |
| WXCO split history WHX Corporation | NASDAQ | Basic Materials |
| WXS split history WEX Inc | NYSE | Services |
| WY split history Weyerhaeuser Co | NYSE | Financials |
| WYN split history Wyndham Worldwide Corporation | NYSE | Cyclical Consumer Goods & Services |
| WYNN split history Wynn Resorts, Limited | NASDAQ | Cyclical Consumer Goods & Services |
| WYY split history WidePoint Corporation | NYSEMKT | Technology |
| WZE split history Wizzard Software Corporation | AMEX | Technology |
| WZEN split history Webzen Inc. (ADR) | NASDAQ | Technology |