Overstock’s t0 (tee-zero) platform has been working on bringing equity trades and settlement to the blockchain since it was first announced in April 2015. In July, Overstock sold the first cryptobond on the blockchain. As a proof of concept, FNY Managed Accounts agreed to buy the $5 million bond, with assurances in place in case the technology failed.
But for now this is great news depending how much of it is true -- the SEC validating this and it's being done on the actual bitcoin blockchain. Once VISA is done playing on testnet they'll probably follow too.