My company offers me to buy stock at a 20% discount. The rate

What industry does the company serve? How large is it? Is it in a growth stage?

>>1942265
Jack of all trades construction firm active in some EU and African countries. They say they're trying to expand

Note: I'm not really qualified to assess whether they're doing "good" or "bad". I'm just wondering whether the 20% discount they give warrants (mathematically?) to forego some of the usual caution.

It basically comes down to "do you expect the company to perform more than 20% worse than the stock market in general over the next 5 years"

Assuming they won't be that shitty, and assuming that you'd dump your excess money into various stocks or stock-based funds anyway, and assuming you don't have any problems with the 5-year wait, then the discount is like them giving you free money. I think the discount trumps diversification.

>>1942240
Is it not possible for you to buy the max 7.5k@ 20% and sell them at 10-5% discount to others?
???
Profit

>>1942277
I'd max it personally, unless you honestly think they'll be tits up in 5 years. Reassess each year, but invest with the understanding that barring significant retraction of the stock value, you're guaranteed a significant ROI.

Is this a new offering your company is giving you? Or have they always done this and you just haven't taken advantage of it before?

>>1942862
This exactly. Plus, if you're only saving $7500 per year you'll never make it anyway. You either need to up your savings rate or make more money (or both)

>>1942277
>I'm not really qualified to assess whether they're doing "good" or "bad".
Just buy index funds. If you don't know if a company is good or not, you're just gambling with your savings.