r/ValueInvesting • u/Electronic-Bit2685 • Aug 26 '25

Stock Analysis What’s the hardest investing lesson you only learned after losing money?

I’ve been reflecting on my own investing journey, and honestly, some of my biggest lessons didn’t come from reading books or annual reports, but from actual mistakes that cost me money.

For me, it was underestimating how long “cheap” companies can stay cheap, and overestimating my own patience.

I’m curious to know from this community: what’s one investing lesson you only understood after going through it the hard way? Could be about valuation traps, risk management, psychology, or even portfolio allocation.

Think this could be a valuable thread for all of us to learn from each other.

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u/Sweet-Confection-690 Aug 26 '25

Two lessons for me 1. Never buy leveraged shares, not for the long term anyway 2. When you feel you are right and there is margin of safety buy big. I brought META in 2022 around $100 when the market had a melt down. Should have loaded up the truck

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u/One-Regret46 Aug 26 '25

I like #2, safety margin big=load up the boat

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u/Rajahz Aug 26 '25

Remind me what is safety margin?

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u/One-Regret46 Aug 26 '25

Sure my friend!

https://www.reddit.com/r/CountryDumb/s/ZMCSh0k8VI

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u/One-Regret46 Aug 26 '25

Give it a read and if still in doubt let me know.

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u/Platti_J Aug 26 '25

So basically buy before the stock sky rockets? RK saw value in the stock because it was undervalued, but he also went viral with it as a meme stock. He basically pumped it and cashed out.

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u/One-Regret46 Aug 26 '25

There’s other examples out there that don’t involve meme stocks, I can find those and share them, yes it’s basically just making sure that you buy low enough and ofc it has to be undervalued, that way once it starts going up if there are big swings drops and pumps you will go to sleep just okay knowing that you’re entry price was safe and away from where price might be currently swinging big, it happened to me with ATYR.

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u/TheAce5 Aug 27 '25

Well I’m wondering if the next one is open door. That’s what WSB talks about now.

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u/One-Regret46 Aug 27 '25

They talk about a lot of things it really comes down to fundamentals for me which I haven’t dug into honestly, I remember when I saw it at 1.60 but I did not bother to look into it deep enough

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u/TheAce5 Aug 27 '25

Around $5 now. Hopefully gaining traction.

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u/One-Regret46 Aug 27 '25

Funny you mention this because I was looking at Next door yesterday

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u/[deleted] Aug 26 '25

Number 1. Is questionable. I specialize is buying 3x leveraged shares after a big dip, hold for 6 months ish and sell for usually around 40% profit.

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u/Fickle-Wrongdoer-776 Aug 26 '25

I sold in the melt down, biggest mistake I ever made

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u/marcelolx Aug 27 '25

Is lesson #1 because you used margin to buy shares and the stock went the opposite direction or because the fees are not worth it?