The advise I give to all the YC companies is: prepare for the investor day as much as you prepare to the demo day. The investor day can save you a lot of time

The advise I give to all the YC companies is: prepare for the investor day as much as you prepare to the demo day. The investor day can save you a lot of time fundraising later if you close few people on the spot, so make sure to be ready for a 20 minutes session with a longer coherent pitch and answers to the common questions. In my batch (W17) the investor say was completely deemphasized for some reason, and many companies came unprepared, myself included