By Jonathan Moreland, founder of Insider Insights and author of Profit From Legal Insider Trading.

NEW YORK ( TheStreet) -- It is a victory for common sense. Tracking the trading behavior of company executives, directors and large shareholders in the stocks of firms they're registered in as "insiders" has proven to be profitable, according to 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, July 25, 2012 as ranked by dollar value. Please note, however, that these are only factual lists, 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.

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 Top Insider Trades columns 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 contact us with any questions on our proprietary insider data, and how it is best analyzed.
Durata Therapeutics (DRTX) Aisling Capital III BO 1,111,111 9,999,999
NVR (NVR) Schar Dwight C DIR 10,000 7,332,200
Cracker Barrel (CBRL) Biglari Sardar BO 48,244 2,891,473
First Opportunity Fund (FOFI) Adams Nicholas C FO 40,676 285,799
Chuy S (CHUY) Ferreira Jose Jr BO,DIR 15,000 195,000
Hudson Global (HSON) Sagard Capital BO 35,000 150,600
Herzfeld Caribbean Basin Fund (CUBA) Herzfeld Thomas J PR,DIR 12,000 81,732
Interactive Brokers (IBKR) Gates Richard J DIR 5,000 67,400
Micro Imaging Technology (MMTC) Pett Robert A BO 50,000,000 50,000
Independent Bank (INDB) Jones Kevin J DIR 1,162 33,876
Source: Insider Insights
Susser (SUSS) Dawson William F Jr DIR,BO 5,000,000 180,000,000
SS&C Tech (SSNC) TC IV BO 7,000,000 172,270,000
Microsoft (MSFT) Gates William H III DIR 4,250,000 124,159,504
Splunk (SPLK) SRB Associates VIII BO 1,941,399 52,925,060
Splunk (SPLK) JK&B Capital IV BO 1,679,960 45,797,892
Linkedin (LNKD) Gamson Michael VP 10,000 1,029,349
Linkedin (LNKD) Nishar Dipchand VP 6,397 659,629
IHS (IHS) Walker Richard VP,CFO 5,000 511,488
Exponent (EXPO) Boehm Paul VP 9,000 477,270
Magnum Hunter Resources (MHR) Kirkendall Donald L VP 85,000 300,050
Source: Insider Insights

Key to Titles: A=Assistant, AI=Affiliated Investor, AO=Accounting Officer, BD=Business Development, BO=Beneficial Owner, CAO=Chief Accounting Officer, CB=Chairman, CCO=Chief Compliance Officer, CEO=Chief Executive Officer, CFO=Chief Financial Officer, CIO=Chief Information Officer, CO=Compliance Officer, COO=Chief Operating Officer, CT=Controller, CTO=Chief Technology Officer, DIR=Director, EVP=Executive Vice President, F=Founder, FO=Financial Officer, GC=General Counsel, HR=Human Resources, IO=Information Officer, IR=Investor Relations, LO=Legal Officer, MD=Managing Director, O=Officer, OO=Operating Officer, PR=President, PT=Partner, REL=Relative of an insider, SEC=Secretary, SH=Shareholder, SO=Sales Officer, TO=Technology Officer, TR=Treasurer, TT=Trustee, VCB=Vice Chairman, VP=Vice President, X=Ex Officer or other title displayed.

Jonathan Moreland is the founder of, which produces a weekly newsletter and offers professional screening and alerting tools to analyze a proprietary, real-time insider data feed. He is also the principal of Insider Asset Management, a registered investment advisor in New York. Mr. Moreland has been analyzing insider data professionally for two decades and has been a contributor to since 2001. A fundamental analyst with an MBA in finance, Mr. Moreland long ago identified insider data as an excellent first screen to determine where to focus his research efforts. He is quoted frequently in the media for his insider analysis and stock recommendations stemming from it. He is also author of Profit From Legal Insider Trading.

Under no circumstances does the information in this column represent a recommendation to buy or sell stocks. While he cannot provide investment advice or recommendations, Moreland appreciates your feedback; click here to send him an email.