The management of the iShares Bitcoin Trust ETF by BlackRock previously stated that a 2% allocation of Bitcoin in a traditional multi-asset portfolio is a 'reasonable range.' In response, Thomas Martin, Senior Portfolio Manager at investment firm Globalt Investments, revealed that currently 10% of their portfolio is in gold and they may consider increasing their Bitcoin holdings, but the portfolio allocation might not exceed 5%.
In addition, he also mentioned that they might consider holding 5% cash in their portfolio, with the remainder invested in stocks and bonds, with the proportion between the latter two varying according to different investors' risk preferences. Thomas Martin pointed out that in some aggressive strategies he manages for clients, stocks may account for 90% of the portfolio, and gold has a low correlation with stocks, bonds, and cash, sometimes serving as a store of value.