Usually something has significant as an ETF approval should excite the markets and bring with it positive price moves, but because this could be an opportunity for some to sell high now as there is a market from Asia buying heavily, the US markets and other whales could be selling and will buy for cheap when the price takes and get more profits in no time as they know price will rebound after this setback!!
So in some way I think the the "Hong Kong Bitcoin ETF" is very much responsible here!!!
The price correction is a norm when it comes to bitcoin price movement, especially now that the halving event is over. I believe that what happened in 2017, is what we are seeing here, when after the halving, the price of bitcoin dips before it pumps again.
I think I have to go with the two opinions here along with other relevant ones from members already contributed concerning this discussion, I may not have to quote as many as possible, but the idea others have contributed should be found inclusive under the same idea from this two highlights I've quoted from other members, the first is on the reason for having a post halving effect on bitcoin price, while the second is about the even of hearing a breaking economical news, you could understand these the moments we heard about the strike from Iran to Israel, the market quickly went down, now regarding Hong Kong Bitcoin ETF breaking news, it goes more bearish, all these doesn't mean that we can not still experience the continuation of bullrun along the month of May to a new all time high with bitcoin.