I would probably just buy and hold Telefonaktiebolageta LM Ericsson (On the nasdaq: ERIC) is a transmission line construction company. If room temperature superconductors are fairly cheap and real, then long distance transmission is going to be re-wired and additional marginal projects are going to enter the construction pipeline.

You can diversify this with companies such as TSMC and Samsung(better chips).

Oh wait, looks like he created this same question a few minutes ago 😂 :

https://manifold.markets/AntonMakiievskyi/what-stock-should-i-buy-if-i-knew-t

What stock should I buy if I knew that the room temperature superconductor works?

Both interested in which stock may shoot up short term, based on retail investors, but also, what companies would have their long term potential improved by a lot if this discovery is legit Will award to most upvoted comments: 1st place - Ṁ1000 2nd place - Ṁ500 Prompted by this market: https://m…

I'm currently looking at a ETF in clean energy (e.g. iShares Global Clean Energy) as I believe a RTAP superconductor (that supported large currents) would enable a lot of energy transmission and storage solutions that would increase the value of intermittent renewable energy source like solar, wind. Long distance lossless transmission effectively dampens local volatility in supply/demand (e.g. from local weather effects) and can bridge peak supply/demand offsets.

I think it's going to be hard to pick individual winners so I'd rather try and be lifted by the tide.

Improvements in Fusion could somewhat undermine this somewhat, but on balance I think the shift towards electrification in general would help a fund like this and even if wind/solar are less advantaged they are starting from a lower base.

Boring answer: this could have huge downstream impacts that nobody can predict today, get money into a Vanguard Lifestrategy or similar to minimise FOMO and reap the rewards of a rising tide that lifts all boats.