The ETF approval was sure turned into a "buy the rumor, sell the news" kind of thing, the bitcoin market didn't move as much as many of us expected it to upon the announcement of ETF approval, and this to me personally is because, those, that is, the firms who bought bitcoin in large quantities upon the approval of the bitcoin spot ETF, all did so over the counter, to avoid pushing the price of bitcoin up which could be considered as market manipulation by the SEC.
But then, we should not loose hope, the main bitcoin bull run is coming, and when it does come, both the ETF approval, and the halving, plus a host of other stuffs that will act as a catalyst, will altogether, contribute to a massive run up of the bitcoin price, and the entire cryptocurrency market.