Coinmarketcap API seems overloaded today, so the charts may look borked. If the call to CMC fails, I put a default of $0.1 for SBD / STEEM, so the page doesn't throw ugly errors. The downside of this (temporary) workaround is the calculations are off.
I'm working on a cache layer and possibly querying multiple sources to get past this, will post when it's ready. Until then, if you see SBD / Steem values at $0.1 just know the CMC call failed. The blockchain values are correct, it's just the conversions to USD which are screwed.
I'm a serial entrepreneur, blogger and ultrarunner. You can find me mainly on my blog at Dragos Roua where I write about productivity, business, relationships and running. Here on Steemit you may stay updated by following me 
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