U.S.-based spot bitcoin (BTC) exchange-traded funds (ETFs) registered outflows totaling $4.3 million on Thursday, extending a four-day run of withdrawals forward of the supposedly bullish mining-reward halving. Since April 12, the ETFs have witnessed a cumulative internet outflow of over $319 million, with Grayscale’s GBTC accounting for a big share of the withdrawals, provisional information printed by Farside Buyers confirmed. On Thursday, GBTC misplaced $90 million in outflows, which was partially offset by inflows into Constancy’s FBTC and BlackRock’s IBIT. The Grayscale ETF has skilled outflows since day one for a number of causes, together with the fund’s comparatively pricey charges. So, whereas GBTC outflows might not be a trigger for concern, the latest slower inflows into different ETFs could be.