Should "achieven" be "achieve"? A misspelling?

Context:

As investors raced to buy shares, the sprawling social network raised $16 billion on Thursday, in an initial public offering that valued Facebook at $104 billion.
While the I.P.O. shares, 421 million of them, are being sold at $38 each, the feverish anticipation of their debut could drive them higher on Friday when the stock starts trading about 11 a.m. Newly public technology stocks — particularly ones that have captured investors’ attention like Facebook — often achieven double-digit gains in a one-day pop.

More:
Facebook Raises $16 Billion in I.P.O.

Yes — 'achieve'.

The constant demand for new content means that mistakes like this will often get through even on major new sites.