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, January 14, 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.
Opko Health (OPK) Frost Phillip CEO,CB,
30,000 160,586
Nuveen (JQC) Adams William VP 7,300 73,009
Valhi (VHI) Simmons Harold C CB,DIR,
4,000 58,800
EXA (EXA) Furlong Edmond COO,CFO 5,973 57,161
Tiger X Med (CDOM) Brooks Andrew A CEO,DIR,
760,000 45,600
Micro Imaging (MMTC) Pett Robert A BO 20.0M 40,000
Orbit Intl (ORBT) Elkhorn Partners BO 10,000 33,799
Angiodynamics (ANGO) Gould Kevin J DIR 2,700 31,277
Bingo Com (BNGOF) Williams Tryon M CB,DIR,
55,655 22,875
Guaranty Banc (GBNK) Wycoff W Kirk DIR,BO 10,000 20,000
Source: Insider Insights
Facebook (FB) Schroepfer Michael VP 109,999 3,481,508
Rush Ent (RUSHB) Rush W Marvin CB,DIR,
107,922 1,836,617
Tesla Motors (TSLA) Kroeger Harald DIR 46,526 1,562,687
Hershey (HSY) Alfonso Humberto VP,CFO 10,000 750,000
YELP (YELP) Donaker Geoffrey COO,DIR 35,000 735,189
Estee Lauder (EL) Freda Fabrizio PR,CEO,
10,000 640,062
IHS (IHS) Yergin Daniel VCB 5,895 598,700
Power Sol (PSIX) Winemaster Gary CEO,CB,
24,265 400,373
Splunk (SPLK) Stein Leonard R VP,GC,
10,000 310,000
Aruba Net (ARUN) Rottler Juergen DIR 11,854 266,445
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.