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Top Insider Trades 11/21/12: AXP, SIRI, NAV, HCLP

|Includes:American Express Company (AXP), HCLP, NAV, SIRI

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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, November 21, 2012 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
Liberty Media BO Sirius Xm Radio SIRI B $22,250,200
Dai Ichi Life Ins BO Janus Capital JNS B $9,088,392
Leschly Jan DIR American Express AXP B $3,889,168
Srinivasan Mallika DIR AGCO AGCO AB $3,005,105
EMC BO VMware VMW B $2,998,867
Rachesky Mark H DIR,BO Navistar Intl NAV B $2,495,923
Huff John R DIR Hi Crush Partners HCLP B $1,224,930
Moshayedi Manouch F,DIR STEC STEC B $593,054
Kopp Leroy C BO Superconductor Tech SCON B $400,000
Szews Charles L CEO,DIR Oshkosh OSK B $362,904

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

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Type
Dollar Value
Lukis Lawrence J CB,DIR,BO Proto Labs PRLB JS* $43,942,500
Eternity Four Trust BO Carnival CCL AS $12,523,563
Pratt Brian CB,CEO,BO Primoris Services PRIM S $11,203,464
Murdoch Keith R CB,CEO,DIR News NWS JS* $10,025,839
Cleveland B A PR,CEO,DIR Proto Labs PRLB JS* $9,300,000
De Vries Glen M PR,DIR Medidata Solutions MDSO S $8,162,979
Sherif Tarek CB,CEO,DIR Medidata Solutions MDSO S $8,162,979
Reilly Wendell DIR Lamar Advertising LAMR S $7,759,083
Carlson Capital BO Sunrise Sr Living SRZ S $7,371,645
Erbey William C DIR,BO Altisource Portfolio ASPS S $5,018,421

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

Stocks: AXP, SIRI, NAV, HCLP