81.   An overnight plunge on Wall Street and more unwinding of arbitrage positions spurred by lower index futures prices also contributed to the selloff, traders said.

82.   An overnight plunge on Wall Street and more unwinding of arbitrage positions spurred by lower index futures prices also contributed to the selloff, they said.

83.   An overnight rally on Wall Street as well as stronger prices for Nikkei index futures on the Chicago Mercantile Exchange were helping shore up sentiment in Tokyo.

84.   Another factor is the expiration of index futures and index and stock options Friday, a quarterly occurrence called triple witching, which can prompt heavy selling.

85.   Another factor is the expiration of index futures and index and stock options Friday, the quarterly occurrence called triple witching, which often leads to heavy selling.

86.   But after a round of buying, share prices moved into negative territory led by a decline in stock index futures, dealers said.

87.   But after an early round of buying share prices moved into negative territory, pulled down by a drop in stock index futures, dealers said.

88.   But lower index futures and profit-taking brought the Nikkei down in the last half-hour of trading.

89.   But speculators often buy index futures in Singapore and Japan simply to gamble.

90.   But the focus switched in the afternoon to the poor outlook for the Japanese economy suggested by the report, sending index futures and then overall stock prices lower.