The Expiration of IPO Share Lockups

Journal of Finance - Tập 56 Số 2 - Trang 471-500 - 2001
Laura Casares Field, Gordon R. Hanka1
1Penn State Univ.#TAB#

Tóm tắt

ABSTRACTWe examine 1,948 share lockup agreements that prevent insiders from selling their shares in the period immediately after the IPO (typically 180 days). While lockups are in effect, there is little selling by insiders. When lockups expire, we find a permanent 40 percent increase in average trading volume, and a statistically prominent three‐day abnormal return of −1.5 percent. The abnormal return and volume are much larger when the firm is financed by venture capital, and we find that venture capitalists sell more aggressively than executives and other shareholders. We find limited support for several hypotheses that may explain the abnormal return, but no complete explanation.

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Tài liệu tham khảo

10.1111/j.1540-6261.1992.tb03979.x

10.1016/0304-405X(88)90032-3

10.1016/0304-405X(88)90022-0

10.1016/0304-405X(90)90064-7

Bettis J. Carr, 1999, Insider trading in derivative securities: An empirical examination of the use of zero‐cost collars and equity swaps by corporate investors

10.1111/j.1475-6803.2001.tb00826.x

Brau James, 2000, IPO lockups: A signaling solution to an adverse selection problem

Brav Alon, 1999, Insider trading subsequent to initial public offerings: Evidence from expirations of lock‐up provisions

Browning E.S., 1999, Abreast of the market: Internet stocks face end of “lockup periods,”, Wall Street Journal

10.1111/0022-1082.00242

Ezzell John R. JamesA. Miles andJ.Harold Mulherin 1999 Is there really a when‐issued premium?Unpublished working paper Pennsylvania State University.

10.1111/j.1540-6261.1988.tb04599.x

2000 Pennsylvania State University Laura Casares Field Karpoff Jonathan Takeover defenses at IPO firms

10.1111/0022-1082.00086

10.1111/j.1540-6261.1988.tb04594.x

Harris Lawrence, 1986, Price and volume effects associated with changes in the S&P 500 list: New evidence for the existence of price pressures, Journal of Financial Economics, 41, 815

10.1111/j.1540-6261.1982.tb01092.x

Kadlec Gregory, 1997, Issue day effects for common stock offerings: Causes and consequences

10.1093/rfs/12.2.227

10.1111/0022-1082.00230

10.1111/j.1540-6261.1991.tb04629.x

10.1086/209722

10.2307/3665840

10.1016/0304-405X(86)90049-8

10.2307/2330876

10.2307/2331346

10.1111/0022-1082.00072

Ofek Eli, 2000, The IPO lock‐up period: Implications for market efficiency and downward sloping demand curves

10.1086/295444

10.1111/j.1540-6261.1985.tb05002.x

Shleifer Andrei, 1986, Do demand curves for stocks slope down?, Journal of Finance, 41

10.1111/j.1540-6261.1994.tb05153.x

Weil Jonathan, 1999, End of lockup for pc order com is unlikely to bring flood of shares, Wall Street Journal