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 Thursday, December 20, 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.
Solarcity (SCTY) Fisher John DIR,BO 3.0 M 24.0 M
Spectrum (SPB) Harbinger BO 333,778 14,999,983
VMware (VMW) EMC BO 66,500 6,422,757
Puma Biotech (PBYI) Adage Capital BO 29,560 561,522
Lucid (LCDX) Shea William J DIR 214,286 300,000
Berkshire Hath (BRKB) Olson Ronald L DIR 2,500 225,000
Evolution Petro (EPM) Lovoi John BO 25,698 201,729
Bkf Capital (BKFG) Bronson Steven N CEO,DIR,
121,606 122,692
Opko Health (OPK) Frost Phillip MD CEO,CB,
20,000 95,302
W P Carey (WPC) Goldberg Mark M MD 1,600 79,119
Source: Insider Insights
Graphic Pkging (GPK) TPG Advisors BO 39.3 M 236.4M
Fidelity Natl (FIS) Hagerty Thomas DIR 3,534,829 124.09M
Axis Capital (AXS) Trident II DIR 2,950,000 103.89M
Exacttarget (ET) Hoag Jay C PT,BO 2,167,800 39,348,716
Ralph Lauren (RL) Lauren Family BO 150,000 22,823,138
Wynn Resorts (WYNN) Chen Linda PR,SO 80,400 9,199,592
Ellington Finl (EFC) Vranos Michael W FO,DIR
212,000 4,664,000
Alexion Pharm (ALXN) Bell Leonard CEO,DIR 35,000 3,348,800
Walker & Dunlop (WD) Credit Suisse BO 174,930 2,814,834
Kraton Polymers (KRA) GMT Capital BO 94,500 2,206,326
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.