Bitcoin scaled a two-year high on Monday, passing the value of $65,000 as a wave of money carried it within striking distance of record levels amid a weekslong upbeat run.

The price hit a session high of $65,537 early in Europe, already hitting a new two-year high in Asian trading. It was last up 4% at $65,045. Bitcoin hit a record $68,999.99 in November 2021.

The largest cryptocurrency by market value has gained 50% this year, and most of the rise has come in the last few weeks, where trading volume has surged for U.S.-listed bitcoin funds.

Spot bitcoin exchange-traded funds were approved in the United States earlier this year. Their launch opened the way for new large investors and has reignited enthusiasm and momentum reminiscent of the run-up to record levels in 2021.

"The flows are not drying up as investors feel more confident the higher price appears to go," said Markus Thielen, head of research at crypto analytics house 10x research in Singapore.

Smaller rival ether has hitched a ride on speculation that it, too, may soon have exchange-traded funds driving inflows. It is up 50% year-to-date and by Monday was trading at two-year highs, up 2.6% on the day at $3,518.

The rally has come in tandem with records tumbling on stock indexes from Japan's Nikkei to the S&P 500 and tech-heavy Nasdaq, with volatility gauges in equities and foreign exchange turning lower.

"In a world where Nasdaq is making new all-time highs, crypto will perform well as bitcoin remains a high-volatility tech proxy and liquidity thermometer," said Brent Donnelly, trader and president at analysis firm Spectra Markets.

"We are back to a 2021-style market where everything goes up and everyone is having fun."