7/31/13 —At&t Market Cap - 187.17 Billion
7/31/13 —T-mobile Market Cap - 17.52 Billion
Fast forward to 2020
7-31-2020- At&t Market Cap - 210.76 Billion
8-3-2020- T-mobile Market Cap - 132.20 Billion
What’s even more puzzling is At&t had a Market Cap of 281.17 Billion on 10/31/2019