Single parent seeking advice on diversification and retirement planning

I don't really buy the "hold onto 5% or 12.5%" argument which seems to be based on emotion rather than logic.

The fundamental question is if @SheilaMcSpud had €40K or €100K in cash right now to invest would shares in this particular company be the most appropriate option for that money?

I'd hazard a guess that the answer is quite likely to be "no" - even if her employment/remuneration were not already eggs in the same basket.
 
The fundamental question is if @SheilaMcSpud had €40K or €100K in cash right now to invest would shares in this particular company be the most appropriate option for that money?
This is completely true.

But imagine you’d held Apple shares in 1995 and sold them all. You’d have missed out on a 17% compounded annual growth rate or something like a 700-fold return ever since.

You would probably be cursing yourself every single day.
 
My personal opinion is that the company can and will go further in the short to medium term, but who knows long-term. I might keep a small percentage just to see, but the vast majority will be liquidated. And to answer your question, I wouldn't take a chunk of cash and only invest it in this one stock Clubman, but I probably would include it as one of the top 10 stocks I'd invest in. But as I said earlier, I'm far from an expert in stocks.

A genuine thank you for all of this, it's really helping me to think through things.