You know it's a holiday with an early closure if we're talking about a 7yr Treasury auction having an impact on the bond market. To be fair, 7s have had an impact once or twice in the past, but the bar is certainly high. The holiday calendar makes the bar a bit lower as fewer determined traders are required to move the whole pile. Such was the case after the 11:30am ET auction. Bonds were already in good shape before that, but the earlier gains were more incidental than data-driven.
Unchanged overnight and no reaction to claims data. MBS unchanged and 10yr down 1/10th of a bp at 4.165
Lock / Float Considerations
We're now entering peak holiday mode for bond markets. This means a wider range of movement that can happen for no apparent reason even though the average year sees rates drift aimlessly sideways in the 2nd half of December. The next risk for consequential volatility from scheduled events won't be until the first week of January.