More Videos:

Insiders Trading DVA TTWO KMR VCRA

Tickers in this article: VCRA TTWO DVA KMR

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 Tuesday, November 13, 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, 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


Davita(DVA) Berkshire Hathaway BO 548,823 61,552,068
Take Two (TTWO) Icahn Carl C BO 1,098,200 12,563,408
Janus Capital (JNS) Dai Ichi Life Ins BO 1,282,419 10,291,010
Viasat(VSAT) Fpr Partners BO 248,000 8,972,262
VMware(VMW) EMC BO 68,294 5,997,701
AGCO(AGCO) Srinivasan Mallika DIR 96,051 4,318,453
Strayer Education (STRA) Wargo J David DIR 60,000 2,754,600
Kinder Morgan Mgt (KMR) Kinder Richard D CB,CEO,DIR 20,000 1,454,802
Trans World (TWOC) Wynnefield Sm Cap BO 594,208 1,336,968
Halcon (HK) Wilson Floyd C CB,CEO,DIR 175,000 999,828

Top 10 Open-Market Sales


Google(GOOG) Page Lawrence CEO,DIR,BO 55,556 36,979,036
Reynolds American (RAI) Brown & Williamson BO 874,888 36,246,608
Jda Software (JDAS) Armstrong James D DIR 344,409 15,423,570
Vocera(VCRA) Nada Hany DIR 363,800 9,095,000
Seagate(STX) Luczo Stephen J CB,PR,CEO 250,152 7,354,469
Google(GOOG) Doerr L John DIR 7,495 5,000,241
Trans World (TWOC) Marxe A & Greenhse D BO 1,544,208 3,474,468
Credit(CACC) Prescott General BO 32,932 2,827,163
Demandware(DWRE) Schambach Stephan DIR,BO 87,407 2,275,204
Kilroy Realty (KRC) Kilroy John B Jr PR,CEO,DIR 50,000 2,215,110