2004/09/02 by Markus K. Brunnermeier, Stefan Nagel · 2 citations
Economics, Econometrics and Finance · #Bubble #Business #Complex Systems and Time Series Analysis #Computer science #Economics #Finance #Financial Markets and Investment Strategies #Financial economics #Hedge #Hedge fund #Market Dynamics and Volatility
paper · pdf · doi:10.1111/j.1540-6261.2004.00690.x
openalex publication_date 2004/09/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/21
ABSTRACT This paper documents that hedge funds did not exert a correcting force on stock prices during the technology bubble. Instead, they were heavily invested in technology stocks. This does not seem to be the result of unawareness of the bubble: Hedge funds captured the upturn, but, by reducing their positions in stocks that were about to decline, avoided much of the downturn. Our findings question the efficient markets notion that rational speculators always stabilize prices. They are consistent with models in which rational investors may prefer to ride bubbles because of predictable investor sentiment and limits to arbitrage.