Activision Insider Sells $23.3M Worth

Which insiders are selling and buying chunks of stocks?

Below are lists of the top 10 open-market insider purchases and sales filed at the Securities and Exchange Commission Wednesday as ranked by dollar value. Company executives and directors are in the best position to assess the attractiveness of their firms' shares, and here is how many of them are voting their wallets!

Dollar value is only one metric to assess the importance of an insider transaction, however. For more value-added tables on a weekly basis, and fundamentally researched investment ideas inspired by insiders, subscribe to TheStreet.com's InsiderInsights newsletter. Whether you're a growth, value, income, momentum, or microcap investor, insider data can help you find great investment ideas.

Also check out Stockpickr's weekly "Top Stocks With Insider Buying, Buybacks."

Company Name (Ticker) Filer Name Title(s) Shares Bought Dollar Value Viropharma (VPHM) Baker Brothers Life Sciences Capital BO 169,112 $1,011,035 Boulder Growth & Inc Fund (BIF) Ernest Horejsi Trust No 1b BO 49,227 $220,936 Clearfield (CLFD) Roth Ronald G DIR 148,240 $183,470 W R Grace (GRA) Steffen Christopher J DIR 10,000 $130,430 Oge Energy (OGE) Brunetti Wayne H DIR 5,000 $128,308 Live Nation (LYV) Rapino Michael CEO,PR, DIR 19,300 $98,430 Akorn (AKRX) Kapoor John N DIR,BO 100,000 $94,096 Siga Technologies (SIGA) Slovin Bruce DIR 15,000 $91,600 Cardionet (BEAT) Ahrens Ronald A DIR 5,000 $89,373 World Heart (WHRT) Marxe Austin W & Greenhouse David M BO 27,735 $72,675

Company Name (Ticker) Filer Name Title(s) Shares Sold Dollar Value Activision Blizzard (ATVI) Kelly Brian G DIR 2,000,000 $23,339,800 Riskmetrics Group (RMG) Kern Rene M DIR 1,036,055 $17,353,921 Riskmetrics Group (RMG) General Atlantic Partners 78 LP BO 984,418 $16,489,002 Texas Roadhouse (TXRH) Taylor Wayne Kent CB,DIR, BO 305,000 $3,359,350 Virtusa (VRTU) Armony Izhar DIR 393,000 $2,676,330 Global Cash Access (GCA) Cucinotta Robert BO 385,000 $2,653,151 Aep Industries (AEPI) Jmb Capital Partners Master Fund LP BO 69,600 $1,608,456 India Globalization Capital (IGC) Oliveira Steven Michael BO 1,113,025 $1,317,072 Microsoft (MSFT) Marquardt David F DIR 50,000 $1,019,800 Consolidated Edison (ED) Mcgrath Eugene R DIR 25,000 $886,750

Key to Titles: A=Assistant, AI=Affiliated Investor, AO=Accounting Officer, BD=Business Development, BO=Beneficial Owner, CAO=Chief Accounting Officer, CB=Chairman, CCO=Chief Compliance Officer, CEO=Chief Executive Officer, CFO=Chief Financial Officer, CIO=Chief Information Officer, CO=Compliance Officer, COO=Chief Operating Officer, CT=Controller, CTO=Chief Technology Officer, DIR=Director, F=Founder, FO=Financial Officer, GC=General Counsel, HR=Human Resources, IO=Information Officer, IR=Investor Relations, LO=Legal Officer, MD=Managing Director, O=Officer, OO=Operating Officer, PR=President, PT=Partner, REL=Relative of an insider, SEC=Secretary, SH=Shareholder, SO=Sales Officer, TO=Technology Officer, TR=Treasurer, TT=Trustee, VCB=Vice Chairman, VP=Vice President, X=Ex Officer or other title displayed.

Source: InsiderInsights.com