There appears to be a bunch of out of sequence trades that were recorded.
Those have been showing up on multiple stocks recently - not just this one. They are not blocks given to the MM to sell throughout the day that often show up as a T-Trade settlement.
The trade you see is an OUT OF SEQUENCE trade meaning that during a burst of volume a trade was lost or not able to be reported on time and was properly reported after the market was closed to record it to the consolidated tape.(bigbake)
=== LOL - lol the 100 share paint at the end of the day!
This has been an ongoing problem for me with AT. It is a total glitch in their system. Tech support is working on the problem for me - and I thought it was only me. Their explanation is that they are getting 2 separate feeds. The "My Account:Overview" will show 1 price / the Balances and Position shows another price. The correct price is the one in Balances/Positions.