To be honest, it's difficult to say with certainty. Likely candidates are speculation, possibly from Korea. It's such a small market cap cryptocurrency that it can be moved rather easily.

I mean, SBD are #241 on the CoinMarketCap list. You ever heard of any of these coins around it?

Yeah, even if I had heard of some of those coins, I suspect none of them are getting 10% of the press of SBD lately.

Generally speaking, as long as the market remains bullish on Steem (and I would say it is, given it held up very well recently) SBD has at least one justification for a higher price.

The small market cap could make it drop just as fast.