SQLite Subquery Syntax Error when using Multiple Columns

It seems so simple; but I can't get this working.

select ISIN, QuoteTimestamp
from QuoteData
where (ISIN, QuoteTimestamp) IN
      (select ISIN, MAX(QuoteTimestamp) QuoteTimestamp
       from QuoteData
       group by ISIN)

This query gives me a syntax error. If I amend it to only use a single column (remove the MAX(QuoteTimewstamp)) it works.

It seems to be correct, as per the documentation.

Thanks, Al.