Oh for a second there, I thought it was yours! Now that's really not that many visitors. Bidder 6 is winning!
as far as i know, i've just contacted the owner of investment.com (different domain), they sold it for 900k.
I have to ask who'd buy a domain like this for such a huge chunk of money. I mean, I can see loan.com or something being worth $1m+ but who'd buy invest.com? An investment firm? Why would they pay so much when they could just get into the top 3 Google results for the term "invest" for a LOT less? That would be way more cost-effective.
Don't even bother looking until closer to the end time of the auction, nobody with a clue wastes their time bidding this early on. I'd be shocked if it didn't fell more than a million dollars.
Type in traffic and branding, it's worth well more than that in the long run. They don't care about getting into the top three for one search term, a well branded, easy to remember site based on high dollar items related to investing would pay for itself in no time based on the long-tail alone much less if it was purchased by a major bank. Banks make billions in profits, they could easily justify tens of millions for a domain like this one.