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Top Insider Trades 5/10/13: CFX, CIE, DRIV, EVER

|Includes: Colfax Corporation (CFX), CIE, DRIV-OLD, EVER

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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, May 10, 2013 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
Bluemountain Cap BO Dune Energy DUNR JB* $4,161,000
Guber Peter DIR,BO Mandalay Digital MNDL JB* $1,000,000
Rales Mitchell P DIR,BO Colfax CFX B $737,057
Ipmd Gmbh BO Uluru ULUR JB* $500,000
Loewenbaum GW DIR Luminex LMNX B $487,115
Dobson David C CEO,DIR Digital River DRIV B $446,300
Singer Karen BO Evolving Systems EVOL B $401,107
RGM Capital BO Guidance Software GUID B $278,744
Hooke James CEO Macquarie Infra MIC JB* $200,012
Huffines James R PR,COO,DIR Hilltop HTH B $159,170

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
First Reserve Gp Xi BO Cobalt Intl Energy CIE JS* $421,455,936
Macquarie Infra Mgt DIR Macquarie Infra MIC JS* $172,146,736
Newton Russell B Iii DIR Everbank Financial EVER S $19,229,400
Vassalluzzo Scott J BO,DIR World Acceptance WRLD S $17,674,794
Bauer Fred CB,CEO,DIR Gentex GNTX S $10,266,238
Stull Steven T DIR Fleetcor Tech FLT S $8,255,895
Gilbert Daniel R COO Northstar Rlty Fin NRF S $4,406,379
Tylis Albert PR Northstar Rlty Fin NRF S $4,139,877
Sordello Steven J VP,CFO Linkedin LNKD AS $3,594,425
McElya James S DIR Cooper Standard COSH JS* $3,313,107

Source: | Key to Insider Title and Trans Type Codes