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. 30, 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
Biotime (BTX) Bradsher Neal C DIR,BO 300,042 1,052,148
Opko Health (OPK) Frost Phillip Md CEO,CB,BO 64,500 552,845
Accelrys (ACCL) RGM Capital BO 18,893 179,484
First Citizens Banc (FCZA) Heckelman James O 5,000 125,000
Techtarget (TTGT) Hawk Don O 10,000 50,400
Ofg Bancorp (OFG) Fernandez Jose R CEO,DIR 2,000 44,238
Nutrastar Intl (NUIN) Fearon Richard Jr DIR,BO 28,500 41,170
Bkf Capital (BKFG) Bronson Steven N CEO,DIR,BO 35,601 38,482
Lakeland Industries (LAKE) Bachelder Stephen COO,DIR 3,500 17,810
Mexco Energy (MXC) Clayton Kenneth L DIR 2,700 17,664
Source: Insider Insights

                   Top 10 Open-Market Sales
Oil States Intl (OIS) Jana Partners BO 106,980 10,854,191
Kodiak Oil & Gas (KOG) Peterson Lynn A CB,CEO,DIR 499,190 5,631,146
Outerwall (OUTR) Jana Partners BO 55,954 3,634,212
Ambarella (AMBA) Wang Feng Ming CEO,DIR 99,000 2,970,000
Brown Shoe Co (BWS) Fromm Ronald A DIR 73,156 2,055,744
Red Hat (RHT) Cunningham Michael VP,GC 20,000 1,125,040
Kodiak Oil & Gas (KOG) Henderson James P CFO,SEC,TR 100,000 1,124,922
Palo Alto Net (PANW) Chandna Asheem DIR 17,500 985,227
Ruckus Wireless (RKUS) Kish William S A CTO,DIR 60,000 852,522
Arc Document (ARC) Suriyakumar Kumar CB,CEO,DIR 90,000 716,757
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.