This is OT so please don’t continue a thread on this.
Upstart always had plenty of volume as I remember. With Monday, I waited until an hour after the opening so that there was some volume on the books, and the spread had narrowed. I used smaller number of shares in each trade. I tried market vs limits that were part way between the bid and the asked (worked occasionally).
The most important thing I did was mentally divide the stock price by 10 to put it in perspective. So a share at $365.70 compared to a share at $366.10 becomes 10 shares at $36.57 versus at $36.61, or a difference hardly worth thinking about. That really helps!
DO NOT ADD TO THIS OT THREAD.
Saul