By reducing the positions held in stocks and bonds:
Starting with a 60-40 equity-bond portfolio, which is produced with a risk aversion of 𝛾 = 1.50, the optimal BTC allocation is a large 84.9%! The remainder of the portfolio, 15.1% is split 60-40 between equities and bonds.
that linked article had many exampled positions with many different allocation amounts.. picking just the highest("EXTREME") mentioned is not what blackrock concludes.. their actual conclusion is a 3% position of btc allocation not 84.9%
also reading through other commercial banks desires to hoard bitcoin via the BIS settlement network agreements. they too want more then 2% but less than 5% ability to hoard BTC
and if you ever look at any investment institution none of them have high % hoarding of one asset. they all spread their eggs across many baskets with a sub 5% hoarding per 'egg'
The question is how is this going to affect the price? 2-5% on these entities portfolios I assume is quite a lot of money dumped into BTC. The problem is, if (when) the recession hits, im not sure if it's a good idea to own BTC, so far it has just acted as SP500 on steroids, so a high risk asset (this is what BTC is considered still by most) would crash bigly, and these banks have customers and these customers wouldn't be happy.