Shares of Riot Platforms Inc (NASDAQ:RIOT) are 5.5% higher to trade at $14.11 this afternoon, extending its choppy pattern on the charts. The Blockchain stock has pulled back more than 40% since tapping an Oct. 10, nearly four-year high of $23.93, but still sports an 11% year-to-date high. A historic bullish signal looks to be flashing, however, meaning more support could be on its way for whipsawing RIOT.

Per Schaeffer’s Senior Quantitative Analyst Rocky White, the crypto stock is now within 0.75 of the 260-day moving average’s 20-day average true range (ATR), after remaining above it 80% of the time in the last two weeks and in 80% of the last 42 trading sessions. This signal has occurred four other times over the past 10 years,…