Apparantly its opening day in the US raked in between US$55-61million, making it the highest Wednesday opening film in America (which isn't difficult, because their regular release day is Friday, so less than 1% of movies would open on any of the other 6 days, including Wednesday).

http://www.tfw2005.com/transformers-...pening-168005/

Aside from that distorted record acheivement, that is still a phenominal amount in one day, with the expected 'opening 5-day' earnings to pass the cost of making the movie. And that's just in the US. Expect the same amount to be earnt around the rest of the world, earning Paramount a fortune, and guaranteeing a third. But wait to see if the takings are sustained beyond the opening weekend, to see how big a TF3 will be. As it will be word of mouth that gets others in who weren't swayed by the advertisements.