I recommend the Tramontina 12-qt. TriPly Stockpot. Don't be fooled by the low price or that it is sold at Walmart. This is an astonishing deal, for a fantastic quality pot. It is rare to find a stockpot that is Triply all the way up the sides. I don't think All-clad's 12-qt. stockpot has that (instead it's Tri-ply only on the bottom). Although the Tramontina's description doesn't say it is induction-ready, a magnet sticks to it, so that means it will work on induction.

Just a note that Tramontina also makes pots that are not TriPly, so just be careful when shopping to choose the TriPly version. I am linking the Tramontina 12-qt. TriPly Stockpot below.

Here is a link that might be useful: Tramontina 12-qt. TriPly Stockpot