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, December 5, 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.
Phi (PHII) Gonsoulin Alton A Jr CEO,DIR,BO 503,665 16,006,474
AGCO (AGCO) Srinivasan Mallika DIR 30,419 1,392,886
Meridian Bio (VIVO) Baldini Lawrence VP,OO 32,500 652,295
Spark Networks (LOV) Osmium Partners BO 90,200 554,770
Bingo Com (BNGOF) Pendinas BO 1,000,000 450,000
Aegerion Pharm (AEGR) Perceptive Advisors BO 20,000 425,400
Hewlett Packard (HPQ) Veghte William L VP,COO 23,010 298,860
Opko Health (OPK) Frost Phillip MD et al CEO,CB,BO 32,500 142,620
Western Asset Mtge (WMC) James Gavin L PR,CEO,DIR 5,250 108,885
Fifth Street Finance (FSC) Tannenbaum Leonard M CEO,DIR 10,000 104,300
Source: Insider Insights
Fleetcor Tech (FLT) Summit Ventures BO 4,908,014 254,775,008
Charter (CHTR) Oaktree Opp Invest DIR,BO 683,919 48,102,764
Td Ameritrade (AMTD) Ricketts J Joe BO 1,500,000 24,330,000
Estee Lauder (EL) Zinterhofer A Lauder BO 300,000 17,726,134
Broadcom (BRCM) Samueli Henry CB,CTO,DIR 350,000 11,394,005
Linkedin (LNKD) Hoffman Reid DIR,BO 83,334 9,071,566
Linkedin (LNKD) Nishar Dipchand VP 65,905 7,152,612
Arch Capital (ACGL) Iordanou Constantine CB,PR,CEO 149,032 6,648,765
Rackspace Hosting (RAX) Moorman Lew PR,DIR 90,000 6,139,758
Salesforce Com (CRM) Ramsey Craig DIR 35,000 5,475,538
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.