On a down market day I decided to look at the comparision of market cap between TSLA and NIO by a share price ratio basis. On the daily chart, albeit with fluctuations, TSLA is continuously gaining market cap compared with NIO. This ratio allows for a tool to help decide whether to buy TSLA or NIO.
In short, TSLA is a buy at the low pivots of the ratio, while NIO is the buy at the high pivots which is right now.
Conversely, TSLA is a sell or short at the high pivots while NIO is a sell at the low pivots.
The trade right now is sell TSLA to decrease the position and use the proceeds to buy
NIO either in bulk or in increments to average in.