Bitcoin Holds Steady as Stronger Yen Threatens Global Risk Assets

Bitcoin's price held near $78,500 on September 8 as the Japanese yen surged to its strongest level since February. The stronger yen can squeeze investors who borrowed it to buy foreign assets, potentially prompting sales across their portfolios.

A carry trade borrows in a low-cost currency, such as the yen, to buy assets offering higher returns. A stronger yen raises the cost of repaying yen liabilities when measured against foreign assets. Higher Japanese interest rates can also narrow the strategy's return.

The risk extends beyond investors who explicitly borrowed yen to buy crypto: losses or margin demands in one part of a portfolio can prompt sales elsewhere. Farside Investors recorded $730.8 million of net inflows into US spot Bitcoin ETFs on September 3 and another $174.6 million on September 4.

ETF inflows show actual demand, while the lower cost basis gives recent holders a larger price cushion before their average position falls into a loss. The question is whether Bitcoin's buyers can keep absorbing supply if Japanese funding becomes more expensive and investors reduce risk across their portfolios.