So looks like it's not possible to chart option spread history in ToS at all. One guy even asked ToS support and they told him it's not possible: Not a problem in IB/TWS, but it just takes long time, sometimes a minute but occasionally up to 15 minutes, at which point I give up and try to find other solutions. Here is an example of a 2-week chart of AMZN bull call spread, which took over 3 minutes to display, but at least I can get: