My first ever share purchase is down 25% — what should I take from that?

Nothing here is advice about your situation, and I will not comment on the company — but there are general lessons that people who have done this consistently point to, and your framing invites exactly those.

Concentration. A single company is an enormous amount of specific risk for no expected extra return. The whole point of diversification is that company-specific disasters average out across many holdings; with one holding they do not average against anything. This is the lesson most people take from their first individual position, and most take it the way you are taking it.

Buying shortly after a listing. New listings are a particularly difficult moment to judge. There is little trading history, insiders may be able to sell after a period, and attention is at its peak — which is generally when prices are least connected to anything durable.

Having no thesis you could be wrong about. If you cannot state, in advance, what you expected and what would show you were mistaken, then you have no way to distinguish bad luck from a bad decision afterwards.

One lesson that is about behaviour rather than about markets, and it may be the most valuable one available to you right now.

You said you do not need the money and you are treating this as a learning exercise rather than a crisis. That reaction is genuinely uncommon and it is worth noticing about yourself, because the most expensive mistakes in this area are behavioural — selling in a panic, doubling down to get back to even, or refusing to look at an account for two years.

The useful exercise: write down now, while it is fresh, what you thought when you bought, what you feel now, and what you would want a calmer version of yourself to do. Then read it the next time something moves sharply.

A lot of experienced investors keep exactly that kind of record, and it is worth more than most analysis.

The observation that changes how most people think about this: professionals with enormous resources mostly fail to beat a simple broad index over long periods.

That is a well-documented and widely reported finding, and the reasoning behind it is not complicated. Every trade has somebody on the other side, and in a liquid market that somebody is frequently better informed than a private individual choosing a single company.

So the honest question for anyone buying individual shares is: what do I know that the market does not? For most people, most of the time, the answer is nothing — and that is not a criticism, it is the normal condition.

Which is why broad, low-cost, diversified funds are the default recommendation in most general guidance for people who are not doing this professionally. Not because individual shares are forbidden, but because the alternative requires an edge that is hard to establish and easy to imagine.

Worth stating what is not a lesson, since people often draw it: a 25% fall does not mean you were wrong, and a 25% rise would not have meant you were right.

Over short periods the outcome tells you very little about the decision. That is uncomfortable and it is the reason judging decisions by results is such a reliable way to learn the wrong thing.

Judge the process. The concentration and the timing are criticisable regardless of what the price did.