Having thought about this for a few more days, and having read everyone's (very good) comments, I would like to make one more post.
The most robust way, IMO to define which stock is "highest conviction" is to fall back on the CAPM (Capital Asset Pricing Model).
[As an aside, I don't actually believe in this academic model in practice, but that is a topic for another day. It does offer a useful framework for viewing risk vs return]

The highest conviction stock should be the stock in the green zone that is the greatest distance above the blue line.
Of course a lower risk, high conviction stock (from the LHS of the green zone) is very different from a high risk, high conviction stock (from the RHS). This should be taken into account in position-sizing.
Possibly it makes more sense to have categories, for example:
Highest conviction stocks
Low risk: NHC
Medium risk: CAT
High risk: ART
Good idea for the thread and discussion.
I struggle a bit with the concept of "high conviction" and what it exactly means.
For me, there is a big difference between:
I'm not entirely sure which one of these 3 I should nominate as my "highest conviction".
Let's say that there was a hypothetical stock where the payoff was completely binary, based on a coin-toss. Heads you get one dollar, tails you get nothing. Now if this stock was available to buy for 40 cents, I could say "yes, I have very high conviction that this stock is undervalued". "On average, you are going to get a 25% return in a short period of time". However I would only buy a small amount for my personal portfolio, and I would struggle to nominate this as my "highest conviction" pick, because you have a 50% chance of losing all of your money.
Anyway, I decided to submit answers for each of the 3 categories
Honourable mention also has to go to Catapult. I think it has elements of all 3 categories. Now that the share price has pulled back to the low $4 range, it seems like the classic Buffett "quality at a reasonable price". Not super-cheap, but reasonably priced, with a long runway to keep investing capital, generating good returns and growing earnings for a long time into the future.
Howdy all,
Seen a couple of posts here and there with people mentioning their highest conviction stocks for 2026 so thought to put it into a forum.
As the Strawman will remind us you cannot buy conviction however, I am hoping to use this as an idea generator from others and self-reflect (and have people challenge) on my highest convictions so here goes:
ZIP:
NEU:
BCI:
edit...forgot to put in my fav US Stock.
US Stock... Alphabet:
I have other shares in RL that I am also excited about but these are the ones I thought gave a good variety and I am genuinely bullish on.