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

Top Insider Trades 7/23/12: NSPH, SBH, FSYS, BV

|Includes: Nanosphere, Inc. (NSPH)

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 trades filed at the Securities and Exchange Commission Monday, July 23, 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 relay that July is a seasonally slow filing period for insider transactions, so the dollar values of the records below are likely smaller than they will be in August.

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
1 Slezak Mark DIR,BO Nanosphere NSPH JB* $2,400,000
2 Naphtha Holding BO Isramco ISRL JB* $2,335,095
3 Douglas Kevin BO Fuel Systems Sol FSYS B $1,107,611
4 Massey Richard N DIR Fidelity Natl Info FIS B $485,799
5 Fahman Henry CEO,DIR,BO Phi PHIL B,JB* $307,314
6 Simon Herbert BO Emmis Comms EMMS B $249,660
7 Morgan John L CB,CEO,BO Winmark WINA B $181,965
8 Van Vlack John Patrick PR,DIR Home Loan Svcing HLSS B $140,500
9 Frost Phillip MD et al CEO,CB,BO Opko Health OPK B $135,000
10 Sagard Capital BO Hudson Global HSON B $131,700

Source: | Key to Insider Title and Trans Type Codes

Insider Sales
#: Filer Name Insider Titles Company Name Ticker Trans
Dollar Value
1 CDRS Acquisition BO Sally Beauty SBH JS* $606,364,096
2 Pacitti Christopher A DIR,BO Bazaarvoice BV JS* $56,183,264
3 Battery Ventures VIII BO Bazaarvoice BV JS* $30,562,988
4 CS&R Parallel Fund BO Sally Beauty SBH S $4,011,309
5 Jacobson Mitchell DIR,BO MSC Industrial Direct MSM S $3,399,100
6 Emmett Dan A CB,DIR,BO Douglas Emmett DEI AS $3,313,800
7 Mastercard Foundation BO Mastercard MA S $3,062,483
8 Marriott Richard E BO Marriott International MAR S $2,591,400
9 Thompson James K CB,DIR Hunt J B Transport JBHT S $2,090,380
10 Collins Atwood III VP M & T Bank MTB S $948,716

Source: | Key to Insider Title and Trans Type Codes