The curve is now a live read on how the market is weighing Fed tightening against heavy Treasury supply, so moves in the 2s10s gap are likely to be treated as a headline signal for rate-sensitive assets. Higher short-end yields tend to keep the US dollar supported, while equities have so far shown resilience despite Treasury yields near their highest since 2007, which leaves them exposed if hike pricing keeps building. Oil is a background driver, because a rebound in crude adds to the case for tighter policy, so Iran headlines can shift rate expectations quickly.
The curve is flattening because markets expect a tighter Fed, and UBS argues that signals tighter policy rather than recession, unless jobs, earnings and credit start to weaken.
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