[I show that firms may optimally sell blocks of their own equity to other firms in anticipation of future corporate control activity. In the model, a target and one potential acquirer, who may also be an alliance partner, can negotiate before synergy values are learned. I find that equity implements an optimal mechanism, allowing the partners to extract surplus from outside bidders who may arrive later. The stake is limited by the outsiders' willingness to investigate. The results imply that corporate control may motivate an equity sale even when no takeover activity is apparent at the time or occurs ex post.]

I show that firms may optimally sell blocks of their own equity to other firms in anticipation of future corporate control activity. In the model, a target and one potential acquirer, who may also be an alliance partner, can negotiate before synergy values are learned. I find that equity implements an optimal mechanism, allowing the partners to extract surplus from outside bidders who may arrive later. The stake is limited by the outsiders' willingness to investigate. The results imply that corporate control may motivate an equity sale even when no takeover activity is apparent at the time or occurs ex post.

[This article uses a unique option data set to provide detailed descriptive statistics on the purchased and written open interest and open buy and sell volume of several classes of investors. We also show that volatility trading through straddles and strangles accounts for a small fraction of option trading volume and presents evidence that a large percentage of call writing is part of covered call positions. Finally, we find that during the stock market bubble of the late 1990s and early 2000 the least sophisticated investors in the data set substantially increased their purchases of calls on growth but not value stocks.]

This article uses a unique option data set to provide detailed descriptive statistics on the purchased and written open interest and open buy and sell volume of several classes of investors. We also show that volatility trading through straddles and strangles accounts for a small fraction of option trading volume and presents evidence that a large percentage of call writing is part of covered call positions. Finally, we find that during the stock market bubble of the late 1990s and early 2000 the least sophisticated investors in the data set substantially increased their purchases of calls on growth but not value stocks.