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Top Insider Trades: HMA RAH SLG VMW

Editor's note: These trades are from Friday. Monday was an SEC holiday, despite the market being open for half a day.

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 Friday, December 21, 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 InsiderInsights.com, 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.

Mannkind (MNKD) Mann Alfred E CB,CEO,
BO,DIR
40,000,000 103.6M
Health (HMA) Glenview Capital BO 4,980,227 45,621,036
Postrock (PSTR) Edelman & Guill En DIR,BO 4,577,464 6,499,999
Silver Bay (SBY) Kessler Irvin R DIR 300,000 5,550,000
VMware (VMW) EMC BO 33,390 3,213,344
Equus Total Ret (EQS) Des Pallieres B DIR 986,842 2,610,691
United Therap (UTHR) Rothblatt Martine A CEO,DIR 9,000 466,662
Ceres (CERE) Ambergate Trust BO 98,090 381,250
Opko Health (OPK) Frost Phillip MD CEO,CB,
BO
62,500 294,938
Mexico Fund (MXF) Shapiro Marc J DIR 10,000 286,486
Source: Insider Insights
Ralcorp (RAH) Meister Keith A DIR 1,322,238 117,947,972
Intuit (INTU) Cook Scott D CB,DIR 399,999 24,744,952
Union 1st Mkt Bank (UBSH) Markel BO 751,532 11,603,760
Sl Green Rlty (SLG) Holliday Marc CEO,DIR 111,981 8,659,357
Solarwinds (SWI) Yonce Donald BO 152,869 8,308,553
Mylan ( MYL) Todd C B DIR 296,205 8,236,070
Comcast (CMCSA) Roberts Brian L CB,PR,CEO 211,800 7,774,080
Seagate (STX) Luczo Stephen J CB,PR,CEO 250,000 7,340,550
Toll Brothers (TOL) Toll Bruce E DIR 200,000 6,447,280
Argan (AGX) Scott Richard L BO 350,000 6,301,785
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 InsiderInsights.com, 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 TheStreet.com 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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