In the last couple months, several very short domain names have come on the market. A couple months ago, there was an auction of one letter domains, and then last month, another auction of two character domain names.
Now you have one last chance. Sedo.com is offering six more one character dot biz domain names:
The auction ends at 12 noon on Thursday, December 17, so don't wait, place your bids now.
By the way, there are very few publicly traded companies that own one letter domain names.