Insiders Trading YHOO, WPRT, IMAX, EPAX

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, July 24, 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.

Today's top buys, however, contain several significant insider signals, including those at Yahoo! ( YHOO), Westport Innovations ( WPRT), Imax ( IMAX) and Ambassadors Group ( EPAX).

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.
Yahoo (YHOO) Loeb Daniel S DIR 2,500,000 39,429,400
Navistar International (NAV) Icahn Carl C BO 688,371 15,751,189
Durata Therapeutics (DRTX) Domain Partners VIII BO 778,536 7,006,824
Westport Innovations (WPRT) Douglas Kevin BO 143,000 5,466,890
IMAX (IMAX) Douglas Kevin BO 100,000 2,440,000
China Cord Blood (CO) McCarthy Kent C BO 325,000 815,750
COSI (COSI) Edwards Stephen F CB,DIR 923,078 600,001
COSI (COSI) Stutz Carin CEO,PR,DIR 769,231 500,000
Ambassadors (EPAX) Bandera Partners BO 77,620 387,288
Yahoo (YHOO) Wolf Michael J DIR 24,000 380,030
Source: Insider Insights
Stryker (SYK) Stryker Ronda E DIR 27,000 1,373,184
Select Medical (SEM) Tarvin Michael E VP 100,000 1,115,315
Platinum Underwriters Holdings (PTP) Schmidt Neal J VP 23,333 912,185
Align Technology (ALGN) George Roger E VP,LO,GC 20,335 678,597
Skyworks Solutions (SWKS) Palette Donald W VP,CFO 16,000 460,960
ANN (ANN) Lawther Krill Katherine PR,CEO,DIR 15,000 398,777
Iridium Communications (IRDM) Greenhill & Co O 40,000 360,164
Acacia Research (ACTG) Ryan Paul R PR,CEO 8,334 289,208
Acacia Research (ACTG) Lee Dooyong VP 8,334 289,208
Apollo Comml RE Finance (ARI) Athene BO 17,322 289,180
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.