Bitcoin topped $90,000 Tuesday for the first time since early March. Other crypto stocks are surging this week.

For decades, the classic portfolio of 60% equities and 40% bonds was considered the cornerstone of balanced investing. This allocation typically offered protection in downturns through bonds, while equities drove returns in times of economic growth.

Bitcoin is up 3.1% to $87,424 over the last 24 hours, according to CoinDesk data. The price of the world’s largest digital coin spiked late Sunday and has remained at levels above $87,000 since. XRP,