My approach is to understand how something works before getting into it.
Market cap rankings are usually sorted by circulating market cap, and rankings change in real time with prices. A high ranking doesn’t mean an asset is safer.
Market cap is just a figure calculated by multiplying the price by the circulating supply. It isn’t the same as the actual amount of money invested. If trading is thin, even a small amount of money can cause the market cap to rise sharply.
Related coin: $BTC is quoted at 82312.91 (24h +1.49%).
In what situation did you figure this out?

#BTC

Markets involve risk. Trade with caution.