title: Bloomberg BDH function with ISIN
body: <p>I have to download historical end of day data for a huge list of stocks. I found on the bloomberg excel add-in the function BDH that is very useful. That is what I need but there is an issue: my stocks are identified by ISINs and i have tried in many way to put the ISINs in the first field of the function but it doesn't work. The function isn't able to identify the security by the ISIN despite the fact that is reported as security identifier in the bloomberg formula syntax: look at slide 24 here <a href="http://lgdata.s3-website-us-east-1.amazonaws.com/docs/205/56376/bloomberg%20excel%20desktop%20guide.pdf">http://lgdata.s3-website-us-east-1.amazonaws.com/docs/205/56376/bloomberg%20excel%20desktop%20guide.pdf</a></p>