X0101 EFFECT 33 LIVE 2014-11-03 0000940394-14-001382 485APOS 0000031266 EATON VANCE SPECIAL INVESTMENT TRUST 002-27962 S000047242 Eaton Vance Multi-Sector Income Fund C000148031 Eaton Vance Multi-Sector Income Fund Class A S000047242 Eaton Vance Multi-Sector Income Fund C000148032 Eaton Vance Multi-Sector Income Fund Class C S000047242 Eaton Vance Multi-Sector Income Fund C000148033 Eaton Vance Multi-Sector Income Fund Class I