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Top Insider Trades 2/20/13: HCA, TWO, LYB, ST

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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 Wednesday, February 20, 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 InsiderInsights.com, 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 support@insiderinsights.com with any questions on our proprietary insider data, and how it is best analyzed.

Insider Purchases
Filer Name Insider Titles Company Name Ticker Trans
Type
Dollar Value
Glaxosmithkline BO Theravance THRX B $2,567,090
Cannell Capital BO Multiband MBND B $444,706
Siering Thomas CEO,PR,DIR Two Harbors TWO B $211,680
Eberwein Jeffrey E BO Endeavour Intl END B $172,600
Frost Phillip MD CEO,CB,BO Opko Health OPK B $168,553
Wulff John K DIR Moodys MCO B $140,250
Vn Capital Mgt BO Breeze Eastern BZC B $125,181
Sherwin Elton DIR Peregrine Semi PSMI B $111,090
Rosenberg Sheli Z DIR Nanosphere NSPH B $98,745
Thornley Anthony DIR Peregrine Semi PSMI B $92,500

Source: InsiderInsights.com | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Type
Dollar Value
Apollo Mgt Gp BO Lyondellbasell LYB JS* $1,532,000,000
Bain Capital BO Sensata Tech ST JS* $953,033,984
Kkr Millennium Fund BO HCA HCA JS* $856,746,048
Bain Capital BO HCA HCA JS* $845,689,728
Blackstone Mgt BO Team Health TMH JS* $318,450,368
Hoffman Reid DIR,BO Linkedin LNKD AS $13,276,458
Hayford Michael D VP,CFO Fidelity Natl Info FIS S $13,228,201
Redstone Sumner M CB,DIR,BO CBS CBS JS* $12,468,440
Weiner Jeff CEO,DIR Linkedin LNKD AS $6,424,900
National Health BO National Health NHC JS* $4,700,000

Source: InsiderInsights.com | Key to Insider Title and Trans Type Codes