A volte viene utilizzato il termine "front end" per indicare il segmento breve della curva dei rendimenti, cioè i tassi a breve scadenza.

Vedi ad esempio:
""The front end of the yield curve is getting hammered by the rapidly shifting views on the Fed and how the easing cycle is over," said David Rosenberg, North American economist for Merrill Lynch, in a note.
Yields on two-year Treasury notes Friday jumped to their highest end-of-day levels since February, to 2.13%, as traders sold off these short-term bonds. That flight drove yields, which move conversely to prices, higher. A rebound in stocks, helped by better-than-expected earnings, also weighed on bonds and lifted yields."
http://www.marketwatch.com/news/story/short-term-rates-jump-...