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 Monday, Dec. 23, 2013 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.

                 Top 10 Open-Market Purchases
Tenet Healthcare (THC) Glenview Capital BO 644,582 25,749,006
Ev Energy Part (EVEP) Walker John B CB,DIR 150,000 4,812,000
Eog Resources (EOG) Textor Donald F DIR 6,000 1,011,654
Aircastle (AYR) Marubeni DIR,BO 30,000 563,577
Jabil Circuit (JBL) Brooks Martha DIR 6,500 104,683
Seneca Foods (SENEA) Call Pete DIR 3,334 101,120
Radiant Logistics (RLGT) Crain Bohn H CEO,DIR,BO 4,000 100,000
Fonu2 (FONU) Lees Robert B PR,CFO,CB 2,500,000 100,000
Breeze Eastern (BZC) Vn Capital Mgt BO 7,174 64,207
Babson HY Fd (BGH) Finke Thomas F CB,CEO 2,000 46,700
Source: Insider Insights
                     Top 10 Open-Market Sales
Enstar (ESGR) Silvester Dominic F CEO,DIR,BO 321,429 45,000,060
Toll Brothers (TOL) Toll Robert I CB,DIR 400,000 13,723,195
Cheniere Energy (LNG) Gentle Meg VP,SO 240,000 9,880,728
Sl Green Realty (SLG) Holliday Marc CEO,DIR 89,119 8,231,491
Ev Energy Part (EVEP) Mercer Michael E CFO 150,000 4,812,000
Diamondback Energy (FANG) Wexford Capital BO 74,200 3,771,252
Douglas Emmett (DEI) Emmett Dan A CB,DIR 140,000 3,246,106
Palo Alto Net (PANW) Batra Rajiv VP 50,000 2,875,000
Cheniere Energy (LNG) Abiteboul Jean VP 60,000 2,518,170
Palo Alto Net (PANW) Bonvanie Rene SO 37,500 2,137,500
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 adviser 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.