It was mostly due to the Japanese recognition. Look at the BTC/JPY trade volumes for the last few days. The volumes have been massive. On the other hand, the ETF factor only had a marginal impact.
Initially I thought so too, that new ETF has little impact on Bitcoin's price. That was until I have seen recent news - it's massive.
Barry Silbert's Bitcoin Investment Trust plans to offer up to $1 billion in shares, from initial $500 million!
SEC is currently reviewing BIT ETF, I am really curious what they will say this time.