XEQT up 29% YTD - Should I hold off a large buy of ~50k

Have ~50k in cash but hesitant to buy in with the huge run up we've had. Yeah I know you can't time the market but I wonder what the odds are it will continue before it tapers off.
Edit: 29% over 1 yr not YTD $ISHARES CORE EQUITY ETF PORTFOLIO UNITS CAD (XEQT.CA)$