A rush of investment into Bitcoin ETFs in recent days sent the combined asset value of such investment vehicles to a record high of more than $158 billion, according to The Block, an outlet that covers digital assets. Investors placed more than a billion dollars into Bitcoin ETFs on consecutive days last week, The Block found.

Bitcoin smashed another record, rising above $123,000 Monday before giving up some of those gains. What's powering the world's largest cryptocurrency to new highs?

The price of bitcoin surpassed $122,000 on Monday after surging beyond $120,000 for the first time over the weekend, the latest milestone for the world’s most valuable cryptocurrency as House Republicans stir regulatory optimism among investors.