30d 59% · quietest on record 24% · loudest 242% · 14% of days were calmer
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tech-v3 · Standard deviation of daily log returns, annualised on 365 days rather than 252 — crypto has no weekend and no holiday, and the equity annualiser understates it by about a fifth. Realised, not implied: this is what happened, not what anyone expects.
30d 59% · quietest on record 24% · loudest 242% · 14% of days were calmer
Every value plotted for a past date could have been computed on that date. Normalised series expand their window rather than scaling against the full history, so nothing here is drawn using information that did not exist yet — which is also why the early years of a normalised series are dropped rather than shown against a range of one.