I opened accounts with Schwab for my wife and my IRA's last year to trade short term T Bills. Not every broker trades them. Because Schwab is the 8th largest bank in the USA I assume that is part of their portfolio. Therefore they buy in bulk  cheap enough for investors to get competitive yields directly through them. All my T Bills are yielding over 5% and going up since I buy 3 month so the turnover takes advantage of the rate hikes. They are the best broker I have worked with so far. No cost to buy stocks or T Bills. Very informative account platform. Also once the Ameritrade takeover is completed they will own the Think or Swim trading platform for investors to use. I understand my KRY shares will move seamlessly to Schwab. Both Roth IRA's where my KRY shares reside.