We study how hedge fund performance is related to the presence of mutual funds operating in the same asset class. We argue that hedge funds are able to exploit the constraints of the mutual funds related to both the high correlation between flows and value of investment and their tendency to...

We study the strategies of the market in the inter-dealer market. We show that market makers actively learn from the dealers they trade with and strategically react to the information content of the orders they receive. We identify quot;hidingquot; and quot;experimentingquot; as main types of...

We study how the introduction of a defined contribution market based retirement system affects the propensity of the investor to participate in the stock market. By using data on the quot;Swedish experimentquot;, we focus on the decision to invest directly in stocks and we see how it changes...

We study the impact of menu representation on portfolio choice and we show that investors choose assets as a function of the way they are represented in the menu available to them. We use the choices of mutual funds for retirement accounts of the Swedish population. We show that investors prefer...

We study the link between social interaction and stock market bubbles. We argue that an increase in social interaction may facilitate the birth of a cascade-type pattern and indirectly of a bubble. We concentrate on a form of interaction that is rooted back in the past: college-based interaction...

We study the link between portfolio choice and different college-based interaction - defined as the one that relates the portfolio choice of an investor to that of the other investors who went to the same college. We explain it in terms of a common cultural imprinting and the development of...

We study the puzzle of portfolio underdiversification and proximity investment from a novel perspective, linking it to the process of urbanism. We find that urban portfolios are more focused - i.e., less diversified and more concentrated in quot;closequot; stocks - than urban portfolios. We...

We relate the degree of investor portfolio focus to the broader urban economic context of the household. Using a detailed panel of investors in Sweden over the period 1995 to 2000, we find that the level of investor diversification, as measured by number of stocks in the portfolio and by the...