TY - JOUR AU - Cochrane,John H. TI - Stocks as Money: Convenience Yield and the Tech-Stock Bubble JF - National Bureau of Economic Research Working Paper Series VL - No. 8987 PY - 2002 Y2 - June 2002 UR - http://www.nber.org/papers/w8987 L1 - http://www.nber.org/papers/w8987.pdf N1 - Author contact info: John H. Cochrane Booth School of Business University of Chicago 5807 S. Woodlawn Chicago, IL 60637 Tel: 773/702-3059 Fax: 773/702-0458 E-Mail: john.cochrane@chicagobooth.edu AB - What caused the rise and fall of tech stocks? I argue that a mechanism much like the transactions demand for money drove many stock prices above the 'fundamental value' they would have had in a frictionless market. I start with the Palm/3Com microcosm and then look at tech stocks in general. High prices are associated with high volume, high volatility, low supply of shares, wide dispersion of opinion, and restrictions on long-term short selling. I review competing theories, and only the convenience yield view makes all these connections. ER -