A Guardian investigation reveals UnitedHealth paid bonuses to nursing homes to reduce costly hospital transfers—allegedly at residents' expense. Whist

The allegations, part of a series of cost-cutting tactics, add to the litany of negatives that have hurt UnitedHealth in the last several months.

By Sriparna Roy (Reuters) -UnitedHealth shares fell more than 6% on Wednesday after the UK's Guardian newspaper reported that the company made secret payments to nursing homes to reduce hospital transfers,