this post was submitted on 05 Mar 2024
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Who let Elon Musk set the prices?

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[–] dhork@lemmy.world 13 points 8 months ago (1 children)

From here, it's just as likely to go to $420,069 as $420.69 .

[–] iopq@lemmy.world 5 points 8 months ago (1 children)

Then you should obviously buy it

0.5 * 420069 = 210034.5

0.5 * 420.69 = 210.0345

At an expected value of around $210K you'd be getting triple value on your investment if your post were true

[–] Aatube@kbin.melroy.org 4 points 8 months ago (3 children)

I don't see the sense in your calculations

[–] PlantJam@lemmy.world 8 points 8 months ago* (last edited 8 months ago) (1 children)

If it has a 50% chance to increase by 10,000% or a 50% to decrease by 90%, the average expected price is an increase of about 5,000%. It's a finance thing, but I doubt the commenter was serious.

[–] iopq@lemmy.world 3 points 8 months ago (1 children)

It's not the expected price per se, but the expected payoff of the investment

We may never sell at 5000% because we're looking for 10000% so we might ignore that price until it either hits our sell point on either side. Either 10000% gain or 90% loss

The value of the investment is then our expected value, but also decreased by risk-free rate for every year we expect to hold to make 10000% profit and divided by half for the probability of 50%

So if we expect to hold for 100 years on average to achieve that price, it's not a good investment because you can just buy bonds that yield 5% to achieve that return (131.5x after 100 years)

But if we expect to hold it for ten years, it becomes attractive

[–] PlantJam@lemmy.world 3 points 8 months ago

That makes perfect sense, thank you for the thorough explanation!

[–] abhibeckert@lemmy.world 3 points 8 months ago (1 children)

If you make bets like that, not just once but repeatedly in a broad portfolio, you will get filthy rich.

But that's based on the false assumption "it's just as likely". The price of bitcoin is not random, and to really get filthy rich you want to use a decision process that better understands market pricing patterns.

A wonderful video on that was posted a week ago: https://www.youtube.com/watch?v=A5w-dEgIU1M

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[–] iopq@lemmy.world 3 points 8 months ago (1 children)

It's called expected value

50% you expect a certain payoff, so the EV of this situation is 0.5 * payoff

[–] Buffalox@lemmy.world 1 points 8 months ago* (last edited 8 months ago)

Thanks, nice perspective on investing you've made overall in this thread. 👍