This paper documents that firms face upward-sloping supply curves when
they repurchase shares in a Dutch auction, and it analyzes the market
reaction to these offers. The announcement price increase is highly c
orrelated with the ultimate repurchase premium. Prices decline at expi
ration only for pro-rated offers. The cumulative return is positive an
d highly correlated with the repurchase premium, excepting pro-rated o
ffers. Much of this price increase is consistent with movement along a
n upward-sloping supply curve. Trading volume around the Dutch auction
parallels fixed-price repurchases. Supply elasticity is larger for fi
rms with large trading volume, firms included in the S&P 500 Index, an
d takeover targets.