BACKGROUND Phase III clinical trials and Food and Drug Administration (FDA) regulatory decisions are critical for success of new drugs and can influence a company's market valuation. Knowledge of trial results before they are made public (ie, "inside information") can affect the price of a drug company's stock. We examined the stock prices of companies before and after public announcements rega...

In this talk I will present several studies conducted at the AI Lab of the University of Arizona that aim to understand and predict market movements using text mining, breaking news, and social media. In “User-Generated Content on Social Media: Predicting New Product Market Success from Online Word-of-Mouth,” we explore the predictive validity of various text and sentiment measures of online WO...

The dissertation presents Hybrid Intelligent Decision Support Systems (DSS) for the selection of alternatives (companies, stocks, and company groups) in stock trading under uncertainty. This study proposes a framework including three models using Hybrid Intelligent DSS. The framework aims to optimize trading decisions in the selection of appropriate alternatives and reduce risky decisions. This...

In this article, I argue that securities fraud class actions (SFCAs) should not be treated as class actions but rather should be treated as derivative actions. In addition, I argue that such actions should be dismissed unless it appears that insiders (including the company itself) have enjoyed gains from trading during the fraud period. Both of these conclusions are based on the fundamental arg...

The last decade has witnessed a dramatic increase in both the number and the market share of screen-based trading systems. Electronic trading systems do offer lower operating costs and the possibility of remote access to the market. On the other hand, arguments based on the anonymity of electronic trading systems suggest that adverse selection may be a more severe problem and that, therefore, b...

Over the last decade, numerous companies have tried to adopt a commercial ERP package in the world-wide e-business and ecommerce environment. However, most of commercial ERP packages are designed for a large-scaled company so that it is difficult to adopt a commercial ERP package in terms of small and medium-size companies. Therefore, it is necessary for a small and medium-size company to seek ...

What happens when investment grade bonds are downgraded to junk status? The received wisdom is that these fallen angels are sold by fixed income investors who, by regulation, are prohibited from investing substantial portions of their portfolios in speculative grade paper. We investigate insurance company sales of bonds that were downgraded to junk in order to document the extent of forced sell...

This paper empirically examines emergent business practices that attempt to reduce and control employee Internet misuse and abuse. Over a 6-month period, 52 web-administered surveys were collected. Respondents ranged from human resource managers to company presidents. Data were stored in a database management system and analyzed utilizing statistical measures. Monitoring efforts and policy deve...

OF DOCTORAL DISSERTATION AALTO UNIVERSITY SCHOOL OF SCIENCE AND TECHNOLOGY P.O. BOX 11000, FI-00076 AALTO http://www.aalto.fi Author Jouni Kauremaa Name of the dissertation Studies on the Utilization of Electronic Trading Systems in Supply Chain Management Manuscript submitted 4.12.2009 Manuscript revised 22.4.2010 Date of the defence 31.5.2010 Monograph Article dissertation (summary + original...