{ symbol: "amzn", currentPrice: 3000.15, timeStamp: 1638253787, priceChange: -25.91 }

Input is JSON data such as above. For one stock symbol, there can be multiple entries in the input. priceChange reflects the change compared to the previous day. timeStamp is in epoch format.
Find:
Get the current price for a given symbol
top 10 winners
top 10 losers