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Top Insider Trades 1/17/13: SIRI, SMG, TIF, FB

|Includes: FB, Sirius XM Holdings Inc. (SIRI), SMG, TIF

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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 Thursday, January 17, 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
Liberty Media BO Sirius Xm Radio SIRI JB* $157,780,000
Discovery Gl Op Fd BO Universal Display PANL B $1,377,103
Rakolta John Jr DIR Agree Realty ADC JB* $1,362,500
Wilber Rick DIR Synergy Resources SYRG B $293,000
McMahon Shane CEO,DIR,BO You On Demand YOD JB* $250,000
Ambergate Trust BO Ceres CERE B $197,488
Banse Amy DIR Adobe Systems ADBE B $190,299
Furlong Edmond L COO,CFO EXA EXA B $159,114
Penn Arthur H CB,CEO,FO Pennantpark Cap PFLT B $134,057
Jones Jill Ackerman VP Brown Forman BFB B $130,686

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Page Lawrence CEO,DIR,BO Google GOOG AS $14,890,407
Sandberg Sheryl COO,DIR Facebook FB AS $10,627,522
Kowalski Michael J CB,CEO,DIR Tiffany TIF S $6,338,320
Hagedorn James CB,CEO,BO Scotts Miracle Gro SMG AS,S $3,949,094
Bell Leonard CEO,DIR Alexion Pharm ALXN AS $3,450,405
Rafaeli Dolev CEO,DIR,BO Photomedex PHMD AS $2,588,206
Waters Louis A DIR Team TISI S $2,096,280
Hagedorn Partnership BO Scotts Miracle Gro SMG S $2,030,039
Kim Neil Y VP,OO Broadcom BRCM AS $1,520,015
Goldberg Murray A VP,FO,CFO,TR Regeneron Pharm REGN AS $1,356,272

Source: | Key to Insider Title and Trans Type Codes