I'm looking for historical data on US Treasuries and other major issuers in USD (high rated corps and supranationals). Need intraday bars (ideally down to 1min) plus yield if possible, back at least 5 years... Seems there are very few vendors for this type of data, or am I missing some? Any suggestions or recommendations?
Only the large data vendors for this unfortunately as retail traders don't trade bonds typically so there isn't the ecosystem of smaller vendors.. bloomberg, reuters, finra etc