BlackRock has recently made significant investments in momentum stocks following the recent election. The firm allocated over $2 billion, with a substantial portion going into the iShares MSCI USA Momentum Factor ETF (MTUM). This investment marked the largest single-day inflow since the fund's inception in 2013.

However, there has been a notable shift in investor sentiment as the iShares Core Total USD Bond Market ETF (IUSB) experienced a record outflow of $1 billion. This indicates a change in the firm's strategic allocation, with a focus on equities during the post-election rally.

It is important to note that BlackRock adjusted its model portfolio allocations last week, reflecting this strategic shift towards equities. This decision highlights the firm's confidence in the momentum stocks and their potential for growth.