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Top Insider Trades 2/1/13: YHOO, HON, TXN, MCP

|Includes: Altaba, Inc. (AABA), HON

Daily Top Insider Trades Instablog

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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, February 1, 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
Young Innovations BO Young Innovations YDNT JB* $312,602,560
Afeyan Noubar DIR,BO Bg Medicine BGMD JB* $4,000,000
Orbimed Advisors DIR Anthera Pharm ANTH JB* $3,762,000
Papadopoulos S DIR Bg Medicine BGMD JB* $500,000
Frost Phillip MD CEO,CB,BO Opko Health OPK B $258,400
Straus Asset Mgt BO Sunshine Heart SSH B $257,739
Kondracke M DIR Bright Horizons BFAM JB* $220,000
Karayannopoulos C PR,CEO,DIR Molycorp MCP JB* $100,002
Simmons Harold C CB,DIR,BO Kronos Worldwide KRO B $96,250
Tocio Mary Ann PR,COO,DIR Bright Horizons BFAM JB* $88,000

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Loeb Daniel S DIR Yahoo YHOO S $216,663,024
Shriram Kavitark R DIR Google GOOG AS $15,203,040
Fradin Roger PR,CEO Honeywell Intl HON AS $3,422,000
Credit Suisse Ag BO Walker & Dunlop WD AS $3,164,292
Ritchie Kevin J VP Texas Instruments TXN AS $2,736,205
Delagi R Gregory VP Texas Instruments TXN S $2,407,020
Carroll Kenneth BO Diligent Board Svs DIL.NZ JS* $2,163,385
Szczsponik John J VP Texas Instruments TXN AS $1,915,379
Broadbent Peregrine VP,CFO Jefferies JEF S $1,759,086
Heacock David K VP Texas Instruments TXN AS $1,532,330

Source: | Key to Insider Title and Trans Type Codes