Bitcoin prices tumbled after news of yet another major crypto theft broke June 10. Week after week in 2018, cryptocurrency investors have been hit by a stream of negative headlines about increasing regulation and cryptocurrency-related thefts, hacks and scams. But even in a market that's known for its volatility, the negative headlines don’t seem to be inducing as much extreme volatility as they have in the past. Volatility Draining Last month, a study by the Anti-Phishing Working Group revealed that a staggering $1.2 billion in cryptocurrency has been stolen in the past year alone, not including the 30 percent of digital currency recently stolen from Coinrail. Bitcoin prices initially dipped 10 percent in response to the news. But if the reaction seemed relatively muted compared to the volatile swings of late 2017, there may be good reason. The price chart below of the NYSE Bitcoin Index is a measure of the 10-day standard deviation of the index. Standard deviation is a measure of market volatility that indicates the amount of variability an asset’s price has in relation to its average price. Source