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Top Insider Trades 11/23/12: GHDX, TZOO, INFN, KKD

|Includes:Genomic Health, Inc. (GHDX), INFN, KKD, TZOO

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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 Friday, November 23, 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
Baker Felix DIR,BO Genomic Health GHDX B $6,151,622
Davis Henry R DIR Kansas City Southern KSU B $4,974,868
Chieftain Capital Mgt BO Tempur Pedic Int TPX B $4,056,772
Srinivasan Mallika DIR AGCO AGCO AB $2,590,739
Baralonco BO Iridium Comms IRDM B $374,129
Fallon Thomas J PR,CEO Infinera INFN B $223,576
Frost Phillip MD et al CEO,CB,BO Opko Health OPK B $199,681
Lovoi John BO Evolution Petroleum EPM B $195,608
McJunkin Jameson J DIR,BO Enphase Energy ENPH B $94,090
Wenz Richard DIR Summer Infant SUMR B $57,223

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Azzurro Capital BO Travelzoo TZOO S $5,178,000
Mohamed Abdulmohsin BO Krispy Kreme KKD S $3,479,471
Spurr John H Jr DIR Independent Bank INDB AS $2,135,076
Elliott International BO Emulex ELX S $1,814,235
Bardis John A CB,PR,CEO Medassets MDAS S $1,329,700
Miller Adam L CEO,DIR,BO Cornerstone Ondemand CSOD S $1,270,765
Elliott Assoc BO Emulex ELX S $976,273
Azoff Irving CB,DIR Live Nation Ent LYV AS $678,385
Godshall Douglas E PR,CEO,DIR Heartware International HTWR AS $320,512
O Connor Paul BO KIOR KIOR S $315,100

Source: | Key to Insider Title and Trans Type Codes