Bitcoin’s stealth rally over the past two weeks has brought it to a key level that analysts at Miller Tabak + Co. say it must break above to continue its upward path.

The largest cryptocurrency by market value has gained more than 15% since March 11, and it pushed past $45,000 on Sunday. If Bitcoin can keep breaking through “in a meaningful way," it should gain a lot of upside momentum, said Matt Maley, chief market strategist at Miller Tabak + Co.

Maley’s watching a so-called “ascending triangle" pattern and says he’d like to see the breach above $45,000 persist during the week because weekend trading can be thin.

The cryptocurrency rose more than 3% on Sunday and traded at about $46,800 as of 6:30 p.m. New York time, beyond the upper end of what had been a narrow $35,000-to-$45,000 range since early this year.

The coin has been stuck in a tight path as the Federal Reserve and other central banks remove some of the stimulus measures they put in place in response to the pandemic downturn. That means there’s less cash to go toward riskier assets, including crypto. In addition, digital currencies came under scrutiny with speculation swirling that they could be used to skirt Russian sanctions, though many analysts rebuff that claim.

Still, Bitcoin rallied this month alongside broader increases in U.S. stocks. The coin is up more than 10% since the end of February, and the Bloomberg Galaxy Crypto Index has also advanced in that span.

“As we test the top of the 2022 trading range for the fifth time, this is another one of these Bitcoin moments when the narrative could swiftly change and investors pile in, propelling the Bitcoin price higher," said Antoni Trenchev, co-founder and managing partner at Nexo. “It might just be