I imagine that's USM2, but it never hurts to be specific about the instrument when quoting market prices.
Thanks, that reinforces my point. USM2 was the most active contract today, and readers would assume "141 5/64" referred to it.
Try here http://www.pfgbest.com/STC/performance.asp The nice people at PFG BEST have up to date postings on botth of Murrays MAR systems