UiPath is joining the S&P MidCap 400 index to replace Synovus Financial. Shares jumped 8% on the announcement since funds tracking the index will have to buy the stock. The change takes effect before the market opens on January 2. The company recently beat Q3 expectations with revenue up 16% year-over-year to $411 million. They also flipped to a profit with a 3.2% operating margin, a decent turnaround from the loss they posted in the same quarter last year.