SBD should always cost 1 USD, but pretty much peg often breaks due to free-market. I remember when SBD got up to 7 USD (if you have time, i have made a comic about it even!) and today it got pumped on Bittrex.
STEEM also pumped but was killed fast so didnt do any spectacular moves. This just shows how you should HODL to your coins as you never know when they go up and it can take literally seconds.
This was an insane run! I am looking forward to the future of Steem.