Depositors' rhymes with:
depositor's, depositors, depositor's, depositors, depositor's, depositors, auditor's, auditors', barometers, competitors', creditors, creditors', depositor's, depositors, editor's, editors, editors', non-sequitors, sequiturs, telemarketers
Depositors' sounds like:
defectors, depositor's, depositors, divestitures