Can I use AlphaVantage to pull data from Asian stock markets? I've been able to do it for others such as the London stock exchange, India stock exchange, Australian stock exchange etc. but haven't got it working for Japan/Shanghai/Hong Kong/Shenzhen stock exchanges. Do they have data for these? And if so, what are the stock exchange codes to feed into the URL?
I've tried for example the following (for the Tokyo stock exchange, looking up symbol 4446):