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The Behavior of Option Price Around Large Block Transactions in the Underlying Security
Raman Kumar, Atulya Sarin and Kuldeep Shastri
The Journal of Finance
Vol. 47, No. 3, Papers and Proceedings of the Fifty-Second Annual Meeting of the American Finance Association, New Orleans, Louisiana January 3-5, 1992 (Jul., 1992), pp. 879-889
Stable URL: http://www.jstor.org/stable/2328970
Page Count: 11
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This paper investigates the behavior of stock and option prices around block trades in stocks. The results indicate that for both uptick and downtick block trades the stock prices adjust within a fifteen minute period after the block trade. Moreover, for uptick blocks there is no evidence of any stock price reaction before the block trade. However, the adjustment of stock price for downtick blocks begins about fifteen minutes before the block trade. We also find that option price behavior differs considerably from stock price behavior. Specifically, our results suggest that options exhibit abnormal price behavior starting thirty minutes before the block and ending one hour after the block. The pattern is more pronounced for downtick blocks and for put options. We interpret this abnormal price behavior of options before the block trade as consistent with intermarket frontrunning.
The Journal of Finance © 1992 American Finance Association