As one of the leading asset managers, BlackRock, shook the market his week when, through regulatory filings, it disclosed that its income funds are invested in its own Bitcoin ETFs. The two important funds were the Strategic Income Opportunities Fund (BSIIX) and Strategic Global Bond Fund (MAWIX),  which acquired $3.56 million and $485,000 worth of iShares Bitcoin Trust (IBIT) respectively. 

These investments are a minor part of the $37.4 billion and $776.4 million portfolios of BSIIX and MAWIX, respectively. As of May 24, the iShares Bitcoin Trust held about $19.61 billion in Bitcoin, which trails the Grayscale Bitcoin Trust (GBTC).  

Globally, spot Bitcoin ETFs hold over 1 million Bitcoin, valued at more than $68 billion, which is nearly 5.10% of Bitcoin's circulating supply of over 19.7 million BTC. Since their launch in January, over 600 investment firms, including major institutions like Morgan Stanley, JPMorgan, and Wells Fargo, have invested in spot Bitcoin ETFs, with Millennium Management being the largest accumulator at $1.9 billion.

Finsum: While this fund cannibalism isn’t new, it’s definitely something to be aware of when looking at income funds.