Is there a history of a symbol's Open, High, Low and Close for specific date?

In Classic TWS or Mosaic add the symbol “US-T” in the Financial Instrument field to open the Treasuries contract selection window. You can also add the "Treasuries" icon to the Classic TWS menu line. In the menu line click on the white arrowhead to see a choice to add buttons then scroll through the list and select Treasuries. Once that button is added click on the icon to open…

To edit the number of days displayed in the Trades tab of the Mosaic Activity Panel, you have to toggle over to the Classic TWS and select Account from the menu bar then click on the Trade History…

Open the Rebalance window in Classic TWS by clicking on Trading Tools menu icon and click on Rebalance Portfolio in the drop down. In Mosaic click on the blue New Window button then at the bottom click on More Advanced Tools then select Rebalance Portfolio…

You can create buttons in the Market Depth Trader to perform a number of actions including creating orders (and transmitting instantaneously), modifying orders, closing positions, and more. To do so, click on the Configure (wrench) icon in the top right corner of the Buttons section. You can add new buttons by clicking the "New..." button on the right hand side. Select the action you wish to perform from the "Select Action" drop down menu and customize the button in the "Customize Action" section. Once finished, click OK to close the Configure Button window. If you are satisfied with your button configuration, click Apply to save your changes and OK to close the window…