High interest savings vs. Index for short term

I have a recently received a large amount of capital that I’d like to hold for 6 months to a year while I home shop. I won’t be starting the hunt until January so would be holding this capital for at least 6 months. I’d love for it to be working so I’m curious if you think putting it into an idea is too risky or if I should stick to my high interest savings (currently at 2%). Thanks!