Here's what happens to the economy when Treasury yields soar like they are now

In recent months, the benchmark US 10-year Treasury yield has surpassed the psychological threshold of five percent for the first time in several decades, sparking concerns among investors about a potential move to six percent. BlueBay Asset Management's Mike Bell noted that five percent has long been viewed as the point at which financial markets might face turbulence, but now the focus has shifted to whether six percent could become the new key worry.

Historically, a breach of five percent has preceded sharp declines in stock markets, as seen in the aftermath of the global financial crisis, where the MSCI world stocks index halved in value. JP Morgan's analysts suggest that a new inflection point may be approaching, with the traditional interest-rate channel losing its binding power and stock market thresholds potentially shifting to the 5.5% to 6.0% range.

The US$29-trillion Treasury market, which serves as the foundation for pricing across all financial assets, could see a profound re-pricing if yields rise to six percent, indicating higher inflation expectations, fiscal concerns, or sustained elevated interest rates. Federal Reserve policymaker Austan Goolsbee expressed uncertainty about how markets would react to a sustained period of five percent yields, while Invesco's Paul Jackson emphasized that investors focus on Treasury yields as the world's risk-free benchmark, with yields above five percent offering the highest returns since 2007.

However, the increasing yields could also strengthen the US dollar, making dollar-denominated assets more attractive and potentially leading to capital outflows from emerging markets, which are often among the first to suffer when US yields surge.