https://www.lightwaveonline.com/business/companies/article/14039708/activist-investment-firm-elliott-management-targets-att
Elliott Management bought up a lot of Windstream debt at a discount after Windstream filed for bankruptcy. They're believed to now be the company's biggest creditor.
They've now bought 1% of AT&T and are pushing for changes there.
I expect they will have the biggest influence on Windstream after bankruptcy.
It may be revealing to see how they handle AT&T in the meantime.
PS Elliott is NOT the same hedge fund that sued over the REIT spinoff. That one was Aurelius.