The diversification effects of volatility-related assets

We examine whether investors can improve their investment opportunity sets through the addition of volatility-related assets into various groupings of benchmark portfolios. By first analyzing the weekly returns of three VIX-related assets over the period 1996-2008 and then applying mean-variance spanning tests, we find that adding VIX-related assets does lead to a statistically significant enlargement of the investment opportunity set for investors. Our empirical findings are robust and have two implications. First, there is scope for the further development of financial products relating to volatility indexes. Second, hedge fund managers can utilize VIX futures contracts or VIX-squared portfolios to enhance their equity portfolio performance, as measured by the Sharpe ratio.     

An Analysis of Lockups in REIT IPOs

We analyze how the unique characteristics of real estate investment trusts (REITs) affect IPO lockup agreements from 1980 to 2006. The findings show that, unlike industrial IPOs, lockup periods for REIT IPOs do not cluster at 180 days, tend to cover longer periods, and vary over time. Our results support the commitment device hypothesis instead of the signaling hypothesis. That is, REIT managers tend to use lockup agreements to alleviate moral hazard problems and protect post-IPO investors rather than to send signals to investors. Finally, contrary to previous studies, we find no significant negative abnormal returns around the unlock date for the whole sample. The lack of aggressive sales by insiders and the fact that REITs are not backed by venture capitalists can explain our finding.     

The Diversification Effects of Initial Public Offerings

Abstract:  A firm's stock becomes publicly tradable through an initial public offering (IPO). This study suggests a portfolio diversification perspective to explore IPOs. We examine whether investors can gain diversification benefits by adding an IPO portfolio to a set of benchmark portfolios sorted by firm size and book-to-market ratio. Using US IPOs from 1980-2002, we find that adding a value-weighted IPO portfolio does lead to a statistically and economically significant enlargement of the investment opportunity set for investors relative to investing solely in a set of benchmark portfolios. Specifically, the Sharpe ratio of the tangency portfolio increases by 5.50% on average after including IPO stocks. Furthermore, IPOs associated with prestigious lead underwriters are the main source of this augmentation of the mean-variance investment opportunity set. Finally, our study implies that issuing IPO exchange traded funds or similar products can provide diversification gains to investors.     

What do investment banks charge to underwrite American Depositary Receipts?

We investigate how investment banks determine the gross spreads paid by American Depositary Receipts (ADRs) from 1980 to 2004. We begin by comparing the gross spreads of ADR IPOs and ADR SEOs to those of matching US IPOs and US SEOs. We document clustering at the 7% level for our ADR IPO sample (44% for the ADR IPO firms without a previous equity listing), whereas our ADR SEO sample exhibits no discernable clustering at any level. We then find that ADR IPO gross spreads can be explained by firm and offer characteristics (similar to our matched sample of US IPOs), and by whether the ADR IPO firm has a previous equity listing. ADR SEO gross spreads can be explained more by offer characteristics (more similar to our matched sample of US SEOs).     

Reputation stretching in mutual fund starts

This study examines the role of reputation stretching in the context of mutual funds. We show that the reputation stretching strategy increases net fund inflows to new funds run by well-performing fund managers and yields a net increase of fund inflows to fund families. Reputable fund managers exhibit one-year performance persistence for managing new funds, which can help investors assess managers when selecting funds. We also find that the decrease in information asymmetry associated with managerial reputation benefits investors by leading to an increase in new fund returns in the short run, compared to those of new funds run by managers without track records. Overall, the reputation stretching strategy benefits both investors, by reducing information asymmetry and improving investment returns, and fund families, by increasing net fund inflows to new equity funds.     

Issuers’ incentives and tests of Baron’s model of IPO underpricing

This paper reexamines the validity of Baron’s (J Financ 37:955–976, 1982) model of IPO underpricing, in which IPO underpricing is caused by asymmetric information between issuers and investment bankers. Muscarella and Vetsuypens (J Financ Econ 24:125–135, 1989) find that lead-manager IPOs are significantly more underpriced than non-self-marketed IPOs and conclude that their empirical results do not support Baron’s model. We compare self-marketed underwriters’ IPOs with non-self-marketed underwriters’ IPOs and with IPOs they lead. Our empirical results show that it is premature to reject Baron’s model of IPO underpricing when we take issuer incentives into account.     

Divergence of opinion and initial public offerings

This article analyzes several IPO patterns in the framework of divergence of opinion. Considering a new industry with few publicly traded companies, the investors in this IPO market do not initially have complete knowledge about the industry, but may learn from other IPOs in the sector. Our model shows that the equilibrium is consistent with empirical evidence documented for IPO underpricing and hot issue markets. We also characterize the association between share overhang, trading volume, and IPO prices. Furthermore, we discuss the decision of going public, analyst coverage, and IPO lockup expiration in the presence of divergent opinions.     

Do IPO index portfolios improve the investment opportunities for mean–variance investors?

We set out in this study to examine whether investors can improve their investment opportunity sets through the addition of an IPO index portfolio into various sets of benchmark portfolios. Using the IPOX indices from the years 1980–2006, we find that adding an IPO index portfolio does lead to a statistically significant enlargement of the investment opportunity set for investors. Our empirical findings are robust, demonstrating that there is scope for the further development of financial products relating to IPO stocks, since investors can gain diversification benefits through investing in such IPO-related products.     

Does Trading Improve Individual Investor Performance?

From 52,649 accounts and 10,615,117 transaction records obtained from a renowned brokerage house in Taiwan we find that individual investors purchase 73.4% and sell 64.5% of their stock portfolios each month. This is more than ten times the statistics for their U.S. counterparts. In general, individual investors have positive abnormal returns from factor-based models. However, they would have earned higher returns from following a buy-and-hold strategy. We find a U-shaped rather than a monotonic turnover and performance relation. The results do not support the overconfidence argument proposed by Barber and Odean (2000, 2001) nor does the rational model of Grossman and Stiglitz (1980). We find that investors with large portfolio values tend to be informed traders whose excess trading does create performance value. We also investigate whether men are more overconfident than women and find that even though men trade more excessively than women, men's performance measures are not dramatically lower than women's. Specifically, the own-benchmark adjusted gross return for men is higher than that for women. The regression results indicate that electronic traders rather than men are overconfident.     

IPO underwriting and subsequent lending

This study investigates the relation between IPO underwriting and subsequent lending. We find that when a bank underwrites a firm’s IPO, the bank is more likely to provide the issuer with future loans at a lower cost, compared to banks without an IPO underwriting relationship. The evidence also suggests that the underwriting banks share information surplus with the IPO firms in the post-IPO loans, supporting the cost-saving hypothesis. Overall, the evidence for the relation between prior IPO underwriting and subsequent lending supports the notion that firms can derive value from investment bank relationships.