"A source close to the company" tells CNNMoney's Dan Primack Twitter will provide a public S-1 "within the next several weeks," and that the company expects to launch an IPO road show 21 days after the S-1 is filed. If true, that sets the stage for an IPO to happen this year rather than next.
Primack: "Twitter didn't say that it filed confidentially today ... My understanding is that the original filing was submitted a while ago, and that most of the SEC review is completed."
GSV Capital (GSVC) finished AH trading up 16.8% in response to news of Twitter's confidential filing, and a report it's now being privately valued at ~$14B. The Firsthand Technology Value Fund (SVVC), whose Twitter stake was valued at $23M (10.4% of the fund's gross assets) as of Aug. 31, closed up 8.8%.