According to the latest disclosure information, a notable institutional holding change has occurred in the iShares preferred stock and income securities ETF fund under BlackRock. The fund has significantly increased its holdings in four types of stocks from Bitcoin treasury company Strategy: STRC, STRF, STRK, and STRD.

In terms of scale, this position totals $471 million, accounting for 3.3% of the entire ETF fund, making it an important position for the fund. This move reflects one of the world's largest asset management firms' clear optimism towards Bitcoin ecosystem companies.

Interestingly, as a traditional financial giant, BlackRock's investment layout in crypto-related companies is gradually deepening after the approval of the Bitcoin spot ETF. Such large institutional-level position changes often reflect market participants' long-term trend judgments and are market signals worth noting for on-chain observers.