The main elements of a stock price chart are lines and candlesticks. Lines link the closing prices of stocks in a given session and can be used with different timeframes, such as hourly or daily. Candlesticks, on the other hand, provide more detailed information, representing the opening, closing, highest, and lowest prices of a stock during a specific session. Other essential elements include trading volume, which shows the amount of stocks traded during a session and helps to understand or validate price patterns, as well as stock dividends and splits, which can affect stock prices.