Bitcoin (BTC) ended June trading at $67,500, with an 11% monthly gain despite last-minute price volatility. Concerns over a cryptocurrency exchange hack in Japan and "predatory" trading moves contributed to weekly lows. US macroeconomic data, such as the Personal Consumption Expenditures (PCE) index, didn't significantly lift the mood despite beating expectations. Trading resource Material Indicators attributed the volatility to Bitcoin whales, large-volume traders who played with liquidity into the monthly close. Despite the turbulence, Bitcoin is consolidating and preparing for further upward momentum, according to Michaël van de Poppe, founder and CEO of trading firm MNTrading.