The 5 Rules I Follow Before Buying Any Asset (That Most Investors Ignore)
- Mathieu Desfosses
- Dec 30, 2025
- 3 min read
Everyone talks about “buy low, sell high.” But in practice, most investors fail not because they pick the wrong assets, but because they lack a systematic approach.
Here’s the method I follow every time — across stocks, crypto, and real estate — that keeps me ahead of the crowd.
1. Understand the Value Before the Price
Price is noise. Value is signal.
In stocks, I analyze revenue growth, margins, and cash flow before looking at the ticker.
In crypto, I evaluate protocol adoption, network activity, and utility, not hype.
In real estate, I calculate cap rates, rental yield, and local demand trends, not just the listing price.
Numbers matter: a stock growing 15% per year with 5% profit margins is often a better buy than one that’s hyped at 50% growth but barely breaks even. The difference compounds over time.
2. Check Liquidity and Exit Options
An asset is only as good as your ability to leave it.
Stocks: Can you sell without moving the market?
Crypto: Does it trade on multiple exchanges with enough volume?
Real estate: Could you sell quickly in a downturn?
Data shows over 40% of retail traders lose money simply because they buy illiquid assets at peak prices and can’t exit fast enough. Liquidity isn’t sexy, but it’s survival.
3. Risk vs. Reward — Objectively
Never invest blindly on emotion. I calculate:
Maximum potential loss — what happens if everything goes wrong?
Expected return — probability-weighted upside.
For example, a small-cap crypto might promise 10x returns, but if there’s a 30% chance of complete failure, the expected value could be negative. In contrast, a blue-chip stock with steady dividends may offer modest upside but drastically lower risk.
4. Timing Isn’t Everything — Position Size Is
You can rarely predict tops or bottoms. What matters is how much you commit.
Never allocate more than I’m willing to lose.
Use scaling: buy in tranches to reduce the impact of volatility.
Data supports this: portfolios that dollar-cost-average or stagger purchases see 30–50% better risk-adjusted returns than those trying to time exact entries.
5. Alignment With Your Strategy
Every asset must serve your bigger portfolio strategy:
Diversification across sectors and asset classes
Hedging against macro risk
Balancing short-term and long-term exposure
An asset that looks profitable in isolation might destroy portfolio efficiency if it’s uncorrelated, redundant, or overly risky. Smart allocation beats chasing the “next big thing.”
Bonus: The Secret Rule Most Investors Miss
Check your edge. Ask: Do I have an advantage over others?
Exclusive research, networks, or data sources
Unique experience interpreting trends
Access to markets most can’t reach
Without an edge, you’re competing with professionals who have better information. You can still participate, but profits will be smaller and luck will dominate. This is why most retail investors underperform the market by 3–5% annually, even before fees.
Why This Matters Across Markets
Whether it’s stocks, crypto, or real estate, these rules are universal. They turn random speculation into repeatable, scalable decision-making. They separate casual investors from professionals. And they are the exact framework I share in my premium analysis packages — with real-time applications, examples, and actionable insights.
The truth is: following these rules doesn’t guarantee profits. But ignoring them guarantees mistakes. And in markets, mistakes compound faster than gains.
Takeaway
If you walk away with one thing today: a system beats luck every time.
Every asset you consider should pass the five tests above. If it doesn’t, don’t buy it. If it does, treat it with respect, not greed. That discipline is what turns an ordinary portfolio into a professional-grade portfolio.
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