Please Note: Blog posts are not selected, edited or screened by Seeking Alpha editors.

Top Insider Trades 9/24/12: JNS, OPK, ZIPR, PRKR

|Includes:Janus Capital Group Inc. (JNS), OPK, PRKR, ZIPR

Daily Top Insider Trades Instablog

  • Did you know? You could have seen the trades below within hours of being filed. If you want more Top Trades emailed 4 times a day, sign up for our Free Intra-Day Top Trades Alerts.

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, September 24, 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, 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
Dai Ichi Life Insurance BO Janus Capital JNS B $10,631,667
Wong Weng Kung CEO,DIR,BO Prime Global Capital PGCG JB* $5,424,000
Kellogg Peter R BO Mercer International MERC B $2,016,400
Frost Phillip MD et al CEO,CB,BO Opko Health OPK B $631,013
Osmium Partners BO Ziprealty ZIPR B $207,703
North Star Inv Mgt BO Acme United ACU B $126,646
Cohen Martin CB,DIR C&S Ltd Duration LDP B $126,007
Sagard Capital BO Hudson Global HSON B $112,500
Sargent Ronald DIR Home Depot HD B $99,086
Cooper Glenn L Md DIR Repligen RGEN B $60,874
Click to enlarge

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
Novartis Ag BO Alnylam Pharm ALNY JS* $30,137,820
Del Mar Asset Mgt BO Parkervision PRKR S $4,600,000
Minicucci Robert A DIR Alliance Data Sys ADS S $4,278,222
Emmett Dan A CB,DIR,BO Douglas Emmett DEI AS $3,292,800
Kellogg W K Foundation BO Kellogg K AS $2,686,191
Bohlsen John DIR Bankunited BKU AS $2,233,042
Keener Gaither M Jr LO,CCO,SEC Lowes Companies LOW S $1,843,327
Fredrickson Steven D PR,CEO,CB Portfolio Recovery PRAA AS $1,261,862
Gamson Michael VP Linkedin LNKD AS $1,221,128
Taranto Joseph V CB,CEO,DIR Everest Re RE AS $1,088,663
Click to enlarge

Source: | Key to Insider Title and Trans Type Codes