Page 1 of Chapter 1 in the Speer #14 says:-
ATK Civil Ammunition makes federal Premium. CCI. Speer. Fusion.
Blazer and Estate Cartridge brands. When your ready to reload RCBS has the tools and equipment you need, and Speer, CCI, Alliant Powder, and federal provide a wealth of bullets, primers and propellants to assemble custom tuned ammunition for your favourite guns.
So yes all owned by one company... what happened to Blount?