FIS
Fidelity National Information Services, Inc.
stock NYSE

I’m working on a personal stock backtesting project and getting stuck on the data cleanup. Historical prices have been easier to find than the details of what shareholders actually received when a company merged, spun something off, or went bankrupt.
I’m covering 2008–2024. Some gaps are dividends for companies that no longer trade. Others are things like the cash paid when a spinoff left someone with a fractional share.
For example, I’ve been looking into the 2008 FIS/LPS spinoff. I found documents explaining how fractional shares would be sold, but haven’t pinned down the actual cash rate and payment date. FIS pointed me to Computershare.
I’ve also reached out to EDI and NetBasis and am waiting to hear back. Before spending more time digging through individual company records, has anyone here dealt with this and found a source that was worth paying for?
A specific product you’ve used, an archive, or even an example of how you handled one of these cases would help. Also interested if you tried a provider that claimed to cover this but still had gaps.

I’m working on a personal stock backtesting project and getting stuck on the data cleanup. Historical prices have been easier to find than the details of what shareholders actually received when a company merged, spun something off, or went bankrupt.
I’m covering 2008–2024. Some gaps are dividends for companies that no longer trade. Others are things like the cash paid when a spinoff left someone with a fractional share.
For example, I’ve been looking into the 2008 FIS/LPS spinoff. I found documents explaining how fractional shares would be sold, but haven’t pinned down the actual cash rate and payment date. FIS pointed me to Computershare.
I’ve also reached out to EDI and NetBasis and am waiting to hear back. Before spending more time digging through individual company records, has anyone here dealt with this and found a source that was worth paying for?
A specific product you’ve used, an archive, or even an example of how you handled one of these cases would help. Also interested if you tried a provider that claimed to cover this but still had gaps.