Speculation about a Magna-Onex bid has been circulating for several weeks.
Speculation over decisions on interest rates also circulated because leading central bankers will meet Sunday and Monday in Basel, Switzerland.
Speculation that Germany's second largest bank, Commerzbank, is under financial pressure following a lending spree to indebted countries, were also circulating among traders.
Speculation about a deal has been circulating for some time, driving the share price up from 312p in May.
Speculation about the D-21Bs circulated within aviation circles for years, and it was not until 1982 that details of the Tagboard program were released.
Speculation that a deal was imminent had circulated in company and Wall Street circles throughout the day.
Speculation that a bomb may have destroyed the aircraft circulated.
Speculation about the chances for lower interest rates circulated in the markets and tended to temper any urge to buy dollars, dealers said.
Speculation about the article has circulated around the Clinton campaign for months.
Speculation as to the cause and identity of the perpetrators circulated via the local media after the incident.