Pengaruh indikator makroekonomi, volume perdagangan dan kepemilikan asing terhadap yield SBSN: analisis weighted average yield (WAY) SBSN di pasar sekunder domestik periode 2013-2017 = The influences of macroeconomics indicators, trading volume and foreign ownerships against yield SBSN: weighted average yield (WAY) analysis in domestic secondary market from 2013-2017