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Top Insider Trades 12/18/13: NUAN, AYR, OPK, TLOG

|Includes: AYR, Nuance Communications, Inc. (NUAN), OPK, TLOG

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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, December 18, 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
Amgen BO Tetralogic Pharm TLOG JB* $1,904,994
Edelman & Guill DIR,BO Postrock Energy PSTR JB* $1,472,415
Icahn Carl C BO Nuance Comms NUAN B $722,780
Marubeni DIR,BO Aircastle AYR B $553,491
Deering Anthony DIR Brixmor Property BRX B $495,248
Frost Phillip Md CEO,CB,BO Opko Health OPK B $480,575
Ebert John W DIR MVB Financial MVBF JB* $400,000
Feinberg Larry N BO Biolase BIOL B $281,268
Dittmar William DIR Va Natl Banksh VABK JB* $261,150
Dean Harry E Iii DIR MVB Financial MVBF JB* $249,984

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Terrific Investment BO AES AES JS* $864,566,016
Onex Partners Gp BO Allison Trans ALSN JS* $159,750,000
Carlyle Mgt BO Allison Trans ALSN JS* $159,750,000
Brody Jeffrey D DIR,BO Homeaway AWAY JS* $39,155,732
Lampert Edward S BO Autonation AN S $25,953,780
Hoffman Reid DIR,BO Linkedin LNKD AS $18,767,736
Weiner Jeff CEO,DIR Linkedin LNKD AS $8,332,935
Sharples Brian CEO,DIR Homeaway AWAY JS* $5,341,875
Dunn Jack B Iv CEO,DIR Fti Consulting FCN S $4,728,619
Levchin Max R DIR,BO YELP YELP AS $2,278,144

Source: | Key to Insider Title and Trans Type Codes