As trading continued, it gave up more than half that gain, then rallied at the close.
Light trading continued to plague the market throughout the day, exaggerating shifts in buying.
Over all, though, none of the major market averages moved very much, and trading continued to be slugglish.
The dollar had slight gains, as trading continued to be light.
Alpha generation platforms have been receiving increased attention as automated trading continues to grow within many key markets.
Bank dealers said light trading continued Saturday at prices between 270 and 280 pounds.
This may be appropriate in cases where trading has continued after the relevant date.
Some trading continued on the lower reaches, but commercial carrying ceased after 1928.
It said that since the half year, the current strong trading had continued.
A special membership referendum will be held next Monday to determine whether dual trading should continue.