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John DoeProfile picture@firmaviary89·May 2

The 3 mistakes I see every beginner investor make (and how to avoid them)

I've helped hundreds of people start their investing journey, and almost everyone makes the same three mistakes early on.


1. Buying what's trending on social media


By the time a stock is trending on Twitter or TikTok, the easy money is gone. The people posting about it already bought in. You're their exit liquidity.


Instead: learn to read basic fundamentals. Revenue growth, P/E ratios, and competitive moats will serve you way better than hype.


2. Checking your portfolio every hour


If you're investing (not day trading), checking prices constantly just triggers emotional decisions. The market is designed to shake you out.


Instead: set a schedule. I review positions once a week, Sunday evening. That's it.


3. Not having a thesis


"I think this stock will go up" is not a thesis. A thesis is: "This company is growing revenue 40% YoY, expanding into a new market, and trading at a discount to peers because of a temporary earnings miss."


If you can't explain WHY you own something in 2 sentences, you shouldn't own it.


I write about this stuff every week inside Capital Pulse — market breakdowns, portfolio ideas, and investing fundamentals. Built specifically for people who are just getting started and want to actually understand what they're doing.