Across all 28 dates studied, average 10-year SIP returns ranged narrowly between 13.36% and 13.42%, indicating that the timing of a monthly SIP has no impact on long-term investment performance.  Across all 28 dates studied, average 10-year SIP returns ranged narrowly between 13.36% and 13.42%, indicating that the timing of a monthly SIP has no impact on long-term investment performance.  by Soban News (international And National News)