Chart on TBT (9/6) and Yield (9/19) Sep 22, 2017 - 12:00 AM EDT View the TBT chart below on Sep 6 when the TBT hit a new low of 33.32, before bouncing the next day off of 32.99 and rally for two weeks. Also, see the chart on 10-Year Yield showing its recent rally and potential to continue higher.