I use Sterling for order entry, but I love Think or Swim for charting. I'm seeing a lot of "low volume dots" on my one minute charts. Anyone else have this today? (9/28/21) I can understand DASH, but FDX, SQ and BROS? I've restarted and I have the same issue. Looks like it starts right at 11:00 AM EDT.
Never mind. I forgot I had this sight bookmarked specifically for TDA. https://downdetector.com/status/td-ameritrade/ That explains it.