I'm not sure I understand the point of using a blockchain in securities trading? I mean, it's not like it would actually have any of the advantages of Bitcoin[

I'm not sure I understand the point of using a blockchain in securities trading? I mean, it's not like it would actually have any of the advantages of Bitcoin[1]. You'll still need to settle accounts periodically (transfer money/stock certificates/etc). Those things aren't going to go away. Once the parties need to trust each other for that, they might as well cut costs by pooling money and buying a centralized order-matching system. That is, make exactly the thing they already have today. [1]-I don't think those advantages are all that great either, but that's beside the point. The point is they don't even apply here!