According to Jin10, the U.S. Treasury term premium has surged to a level not seen in more than a decade over the past few weeks, driving a new round of Treasury selling and pushing U.S. bond yields to their highest level in 24 years. Aegon Asset Management macro strategist Frank Rubinsky said term premium is calculated in several ways, but all measures are rising, and he believes the current market move has staying power. Barclays researcher Demi Hu's team said macroeconomic uncertainty, the breakdown of the traditional stock-bond correlation, increased bond supply, and concerns over fiscal policy are all important factors affecting term premium, and that the recent rise may have been driven by a combination of these forces. Capital Economics chief economist Neil Shearing said the recent changes may also reflect technical factors, such as portfolio rebalancing at the end of last month, or spillover effects from growing concern in European markets about France's debt burden.