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Ah, got you. That could be it, but then why aren't there artifacts like that in the USD-BTC chart? On that one the prominent trade amounts are 1, 0.1, 0.01, ...

Ah, got you. That could be it, but then why aren't there artifacts like that in the USD-BTC chart? On that one the prominent trade amounts are 1, 0.1, 0.01, ... as you would expect. Could be that for USD-USDT algorithmic trading is dominant, vs, human trading being dominant in USD-BTC, in which case arbitrary amounts like 1, 0.1,.. would be less common for the USDT case. I'm not sure how to assess this though.

lowdest 8y ago
That's basically my guess. Since volume is comparatively low on Kraken USD-USDT, an algorithmic trader with a large bankroll clearly stands out. It might be one of the parties with a financial interest in maintaining the USD parity, or it could just be someone placing bets that the parity will continue.