
https://www.coindesk.com/long-term-price-indicator-tuns-bearish-suggesting-bitcoin-may-have-finally-bottomed-out
"A lagging indicator has turned bearish for the first time in four years, suggesting bitcoin’s price may have bottomed out and that a new bull run could begin this year.
As of press time, bitcoin’s 50-week moving average has dropped below the 100-week MA, confirming a bearish crossover – the first since April 2015. Long-term bearish crossovers, however, tend to occur at the end of a big bear move, with prices rallying soon after, as MAs are based on past data.
For instance, the 50-week MA responds to price action seen over the last 12 months, and the 100-week MA tracks much older data. Therefore, the bearish cross of the two is the product of a prolonged bear market – BTC dropped from $20,000 to $3,122 in the 12 months ending December 2018.
Put simply, it takes a great effort on the part of the bears to push the 50-week MA below the 100-week MA. As a result, the bear market is usually exhausted by the time the crossover is confirmed, which seems to be the case with BTC."