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Top Insider Trades 11/26/12: VPRT, PENN, IGT, AMSC

|Includes: AMSC, Cimpress N.V. (CMPR), IGT, PENN

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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 Monday, November 26, 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 $45,484,048
Prescott GP BO Vistaprint VPRT B $3,089,412
Clifford William J CFO Penn National Gaming PENN B $2,016,270
Satre Philip G DIR Intl Game Tech IGT B $500,074
Douglas Kevin BO Amer Superconductor AMSC B $414,879
Baralonco BO Iridium Comms IRDM B $312,352
Hunkapiller Michael CB,CEO,PR Pacific Biosciences PACB B $269,238
Bradbury Daniel DIR Corcept Therapeutics CORT B $248,985
Janosco Michael J Jr FO Westfield Financial WFD B $199,300
Eberwein Jeffrey E DIR Goldfield GV B $138,395

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Schmidt Eric E CB,DIR Google GOOG AS $33,140,265
Eternity Four Trust BO Carnival CCL AS $15,464,460
Prescott GP BO Credit Acceptance CACC S $13,765,562
Mastercard Foundation BO Mastercard MA S $13,608,632
Kellogg WK Fdn BO Kellogg K AS $10,517,767
Doerr L John DIR Google GOOG AS $5,000,466
Kassling William E DIR Westinghouse Air WAB S $4,026,036
Knueppel Henry W DIR Regal Beloit RBC S $4,016,100
Shillman Robert J CB,DIR Cognex CGNX S $3,533,502
Manoogian Richard A DIR Masco MAS S $3,299,289

Source: | Key to Insider Title and Trans Type Codes