Alpha Vantage

Alpha Vantage provides realtime and historical financial prices through data APIs and spreadsheets. You can request a free API key with lifetime access covering the majority of the datasets for up to 25 requests per day. Realtime quotes and some other resources however are premium.

The API documentation is very well written with many examples. These examples can be executed in the browser with a provided demo API-key. If you want to execute your own queries, you need the free API key.

Download the NVIDIA historical prices.

https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=NVDA&apikey=my_API_key

This will return some metadata and the last 100 historical quotes in the browser window. If you want all available historical prices, use the option "outputsize=full".

{
    "Meta Data": {
        "1. Information": "Daily Prices (open, high, low, close) and Volumes",
        "2. Symbol": "NVDA",
        "3. Last Refreshed": "2024-01-25",
        "4. Output Size": "Compact",
        "5. Time Zone": "US/Eastern"
    },
    "Time Series (Daily)": {
        "2024-01-25": {
            "1. open": "623.5000",
            "2. high": "627.1900",
            "3. low": "608.5000",
            "4. close": "616.1700",
            "5. volume": "48277684"
        },
        "2024-01-24": {
            "1. open": "603.0400",
            "2. high": "628.4900",
            "3. low": "599.3800",
            "4. close": "613.6200",
            "5. volume": "55706870"
        }
    }
}

Note

As of January 2024, Alpha Vantage changed some parameters and PP's JSON Quote Feed is no longer functional for this URL. The Path to Date and Path to Close JSON paths below result in an error; even if they are, according to the JSONPath Online Evaluatora valid JSON path.

• Path to Date: $.[Time Series (Daily)].*~
• Path to Close: $.[Time Series (Daily)].[*].[4. close]