Should I buy a duplex (50%) or keep investing

[Ivaylo Asenov]

Hi everyone! Looking to get some feedback here:

About me

- 23 year old, work in USA but Canadian citizen, ~200K gross annual income, ~100K in savings. 

I am thinking of buying a duplex in Montreal, Canada with my sister. She would own 50% and live in one of the units, I will be owning the other 50% and renting out the unit. We got approved for a mortgage of 800K with a 5% down-payment and a 5year variable rate that is currently at 1.34% (super low). Monthly payments for my 50% will be around 1500$/monthly. I think that we can rent out the available unit for ~1000$ which means I will need to cover the rest (~500$). Covering it is not an issue money wise. 

So I wanted to get your guys thoughts on that. The current interest rate is super low and we can convert to a fixed rate without penalty if it goes up. I will be bleeding money (~500$/month) but the other 1000$ from the renter goes directly towards the value of the building so its not like I'm losing money. Housing prices in MTL are pretty high so it's pretty impossible to get a positive cash-flow. 

Do you guys think that investing in a duplex (50%) and having to cover the rest of the mortgage is worth it? Or should I just keep investing in the stock market? Any feedback is much appreciated :)