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Top Insider Trades 1/28/13: CONE, KRO, TZOO, ADBE

|Includes:ADBE, CyrusOne (CONE), KRO, 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 Monday, January 28, 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
Cincinnati Bell BO Cyrusone CONE JB* $7,111,301
Simmons Harold C CB,DIR,BO Kronos Worldwide KRO B $1,983,796
Dondero James D O Nexpoint Cr Str Fd NHF JB* $1,183,811
Cassidy John F DIR Cyrusone CONE JB* $950,000
Ferdman David H DIR Cyrusone CONE JB* $798,000
Tanger Steven B PR,CEO,DIR Tanger Factory SKT B $657,333
Lieber Stephen A VP Alpine Tot DivFd AOD B $601,500
Wojtaszek Gary J PR,CEO,DIR Cyrusone CONE JB* $570,000
Bristow Michael R CEO,DIR,BO Arca Biopharma ABIO JB* $500,000
Lieber Samuel A PR,DIR Alpine Tot DivFd AOD B $200,500

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 $47,541,032
Narayen Shantanu PR,CEO,DIR Adobe Systems ADBE S $4,968,925
Azzurro Capital BO Travelzoo TZOO S,JS* $3,125,135
Addington Hills BO Ixia XXIA S $2,593,207
Linquist Roger D CEO,DIR MetroPCS Comms PCS AS $2,272,766
Greenspring Assoc BO Exacttarget ET S $2,239,643
Frissora Mark P CEO,DIR Hertz Global HTZ S $2,160,000
Elias Richard C VP Ppg Industries PPG S $1,587,567
Goehl Daniel VP Invensense INVN AS $1,350,810
Chou Francis S M BO Overstock Com OSTK S $1,344,858

Source: | Key to Insider Title and Trans Type Codes