TechWeb reports in this ARTICLE on Edgar Online‘s support of XBRL, an XML standard for companies to publish and distribute financial reports.
Such a standard would be a strong movement in the direction of efficient valuation and pricing of fundamental business characteristics. Arbitrage pricing theory could be applied using each XBRL tag as a factor, resulting in the ability to calculate values and sensitivities for stock prices based on changes to the underlying fundamentals in detail.
Dan Von Kohorn 