Here on a daily chart I have the ratio of shares of NVDA to AMD and so the market caps
proportions. From September 2022 and for a year NVDA rose more than AMD and so the ratio
rose. From September 2023 to January 2024, NVDA fell as compared with AMD perhaps because
AMD's rate of rise on a percentage basis exceeded that of NVDA. Since the first of the year,
the ratio is rising meaning NVDA is gaining share price faster than AMD. If a trader could switch
between these, the ratio represents a way to determine which to sell and which to buy at any
given time. Right now, NVDA is the buy until the ratio curve reverses.