MongoDB (formerly 10gen) just became the most valuable tech startup in New York, beating out more well-known companies like Gilt, Foursquare, and Etsy. They're also worth more than the cost of Tumblr, which was acquired by Yahoo this year.
This new valuation of $1.2 billion is due to a new round of venture funding, totalling $150 million. For the month of October, MongoDB remains at #6 on the DB-Engines.com overall rankings. It's the only NoSQL database in the top 10, because Cassandra was knocked back down to 11 on the charts.
So is MongoDB a company that Oracle should look out for? If you look at the ruling Triumvirate of databases on DB-Engines, Oracle, MySQL, and MS SQL Server have an overwhelming lead. Seems like it could be a few more years before there are enough applications out there that really need NoSQL.