Should I pay off the mortgage?

45M here, PR in Japan. Thanks mainly to several AI/Tech investments and the exchange rate – I am in the fortunate position of now having enough in my trading portfolio to pay off the mortgage (about 70M).

Would this be a good idea or better to keep this lump in the markets? My annual rate of return for the last few years had been between 25-35%.

Paying off the Mortgage and the associated capital gains from selling the stocks would pretty much set me back to zero. I earn about 23M per annum all in before tax about would save ~250k in monthly mortgage costs.

Would be interested in people's thoughts on considerations, happy to take any questions. Tks

by Humvee13