By Jonathan Moreland, founder of and author of Profit From Legal Insider Trading.

NEW YORK ( TheStreet) -- Which insiders are selling and buying chunks of stocks?

Below are lists of the top 10 open-market insider purchases and sales filed at the Securities and Exchange Commission Friday, March 11, 2011 as ranked by dollar value. Company executives and directors are in the best position to assess the attractiveness of their firms' shares, and here is how many of them are voting their wallets! Please note, however, that these are factual lists, not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction.

Genomic Health (GHDX) Baker Brothers Life Sciences Capital DIR,BO 70,856 $1,844,412
Brazil Fast Food (BOBS) Bomeny Jose Ricardo Bousquet BO 74,000 $659,010
Chesapeake Energy (CHK) Davidson Richard K DIR 20,000 $641,332
Snyder S Lance Inc (LNCE) Warehime Michael A CB,DIR
33,667 $628,993
Opko Health (OPK) Frost Phillip Md CEO,CB
150,000 $527,967
Spartech (SEH) Holt Victoria M PR,CEO
36,300 $260,271
Hawaiian Electric Industries (HE) Wacker Richard F PR,CEO 10,000 $244,500
Futurefuel (FTFL) Revelation Special Situations Fund BO 20,850 $209,732
CME Group (CME) Parisi James E CFO 670 $200,779
General Motors (GM) Akerson Daniel F CEO,DIR 5,000 $159,050
Continental Resources (CLR) Hamm Harold CEO,CB
750,000 $51,000,000
Whiting Petroleum (WLL) Volker James J CB,CEO
215,900 $13,608,444
Liberty Media (LCAPA) Malone John C CB,DIR
140,000 $10,444,000
Discovery Communications (DISCA) Malone John C DIR,BO 127,216 $5,251,324
Amarin Corp Plc (AMRN) Sofinnova Venture Partners Vii BO 637,000 $4,622,858
Wal Mart Stores (WMT) Castro Wright Eduardo VCB 79,013 $4,166,736
Kellogg Co (K) Kellogg WK Foundation BO 68,500 $3,762,500
Faro Technologies (FARO) Raab Simon DIR 89,716 $3,205,311
Hess Corp (HES) Ornstein Lawrence H VP 27,000 $2,137,320
Central European Media (CETV) Sarbu Adrian PR,CEO
100,000 $2,009,798

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.

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