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Top Insider Trades 11/13/12: DVA, TTWO, KMR, VCRA

|Includes: DaVita HealthCare Partners Inc. (DVA), KMR, TTWO, VCRA

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In a victory for common sense, the trading behavior of company executives, directors, and large shareholders in the stocks of firms they're registered "insiders" at have been proven profitable to monitor by both academic studies and (more importantly) the experience of professional investors.

Below are lists of the top 10 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Tuesday, November 13, 2012 as ranked by dollar value.

Please note, however, that these are factual lists (with edits to remove some noise), not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction, and, frankly, often not even the most important metric that determines if an insider transaction is significant.

We should also point out that we are presently in a slow filing time for insiders because many companies still have their trading windows closed to their executives until their June quarter earnings are released.

But at, we find new investment ideas just about every day using these and more intricate insider screens to determine where we should focus our subsequent fundamental and technical analysis. And while stocks don't (or shouldn't) move up or down based on insider activity alone, insiders tend to be good indicators of when real stock-moving events like earnings surprises, corporate actions, and new products may be in the offing.

So use these regular blog posts as the initial research tools they are meant to be, and click the links in the tables to analyze a company's or insider's full insider history. Also feel free to email with any questions on our proprietary insider data, and how it is best analyzed.

Insider Purchases
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Berkshire Hathaway BO Davita Healthcare DVA B $61,552,068
Icahn Carl C BO Take Two Interactive TTWO B $12,563,408
Dai Ichi Life Ins BO Janus Capital JNS B $10,291,010
Fpr Partners BO Viasat VSAT B $8,972,262
EMC BO VMware VMW B $5,997,701
Srinivasan Mallika DIR AGCO AGCO AB $4,318,453
Wargo J David DIR Strayer Education STRA B $2,754,600
Kinder Richard D CB,CEO,DIR Kinder Morgan Mgt KMR B $1,454,802
Wynnefield Sm Cap Val BO Trans World TWOC B $1,336,968
Wilson Floyd C CB,CEO,DIR Halcon Resources HK B $999,828

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Page Lawrence CEO,DIR,BO Google GOOG AS $36,979,036
Brown & Williamson BO Reynolds American RAI S $36,246,608
Armstrong James D DIR Jda Software JDAS S $15,423,570
Nada Hany DIR Vocera Comms VCRA JS* $9,095,000
Luczo Stephen J CB,PR,CEO Seagate Technology STX S $7,354,469
Doerr L John DIR Google GOOG AS $5,000,241
Marxe A & Greenhouse D BO Trans World TWOC JS* $3,474,468
Prescott General Part BO Credit Acceptance CACC S $2,827,163
Schambach Stephan DIR,BO Demandware DWRE S $2,275,204
Kilroy John B Jr PR,CEO,DIR Kilroy Realty KRC S $2,215,110

Source: | Key to Insider Title and Trans Type Codes