Hedging the risk of holding undesired inventory is very important for market makers. However, prior studies seldom capture the role of inventory positions in measuring hedging costs. This study measures hedging costs directly using data on inventory positions of market makers in the Taiwan Index...

This article focuses on the information effects between the futures market and its spot market. Intraday data are used to investigate the lead-lag relationships between the returns and trading activity of Taiwan stock index futures and the spot returns. We focus on the transmission direction and...

Using data on all employees at listed companies in Taiwan, where pension plans were rare, we find that bias toward employer stocks is generic to individual investor decisionmaking, but not limited to retirement plans. 71 percent of sample employees invest in employer stocks and the employer...

We ask whether the typical investor and the aggregate investor exhibit a bias known as the disposition effect, the tendency to sell investments are held for a profit at a faster rate than investments held for a loss. We analyze all trading activity on the Taiwan Stock Exchange (TSE) for the five...

We document that individual investor trading results in systematic and, more importantly, economically large losses. Using a complete trading history of all investors in Taiwan, we document that the aggregate portfolio of individual investors suffers an annual performance penalty of 3.8...

Rational models claim “trading to learn” explains widespread excessive speculative trading and challenge behavioral explanations of excessive trading. We argue rational learning models do not explain speculative trading by studying day traders in Taiwan. Consistent with previous studies of...

A unique data set allows us to examine trading behavior and realized returns of all participants in the Taiwan stock index options. On average individual investors lose money and foreign institutions profit from trading options, even when they use the same trading strategy and for the same type...

Individual investor trading results in systematic and economically large losses. Using a complete trading history of all investors in Taiwan, we document that the aggregate portfolio of individuals suffers an annual performance penalty of 3.8 percentage points. Individual investor losses are...