Where can I find a good source for current and historical S&P multiplier. Is there a good source to view the aggregated company's profit as a percentage of the GDP?
I am working with the US CRSP universe and have constructed a time series of monthly price-to-earnings back to the early 1960s. I have this for both individual securities as well as for portfolios ...
I would like to, for example, access (and later, upload), for example, historical financial data for the S&P500. If a piratebay for databases existed, maybe we could freely share information that ...