Goldman Sachs has reported a big increase in its Bitcoin ETF holdings, according to a recent filing with the U.S. Securities and Exchange Commission (SEC). As of September 30, the bank held $710 million in Bitcoin ETFs. This includes a 156% increase in $BITB shares and a 116% rise in $GBTC shares since August. This growth shows that Goldman Sachs is becoming more involved in Bitcoin investments. The rise in Bitcoin ETF holdings reflects a larger trend of traditional financial institutions gaining more interest in cryptocurrencies.