時価総額：すべての暗号投資家が実際に理解すべき数字

Market cap is everywhere in crypto talk, but here’s the thing—most people throw around the number without actually knowing what it means or why it matters. Let’s fix that.

What’s Market Cap, Really?

It’s simple math: Market Cap = Coin Price × Total Coins in Circulation

That’s it. If Bitcoin trades at $50,000 and there are 21 million BTC total, BTC’s market cap is roughly $1.05 trillion. That number tells you one thing: how much the market has collectively decided this asset is worth.

The Three Tiers of Crypto

Market cap creates natural groupings:

Big Boys (>$10B): BTC, ETH

• Less violent price swings
• Proven ecosystems that actually do stuff
• Boring? Maybe. Safe? Generally yes.

Middle Ground ($1B-$10B): SOL, DOT

• Still finding their footing but showing promise
• Real utility without the mega-cap price tag
• Where actual innovation happens

Wild West (<$1B): Most altcoins

• Could 100x or go to zero tomorrow
• Emerging ideas, untested promises
• High risk = high reward (or high regret)

High Cap vs Low Cap: What’s Your Play?

High cap = stability, adoption, less drama. You sleep better. But don’t expect 50x returns.

Low cap = lottery tickets with actual use cases. Someone’s getting rich. Probably not you.

The real winners? They understand both.

Why This Actually Matters

Market cap is your risk barometer. A $500B coin moving 5% hits different than a $50M coin doing the same. One’s a correction, the other could be a warning sign.

High cap = trust built over years. Low cap = trust you’re still building.

The Smart Portfolio Move

Don’t go all-in on either:

• 70% in proven stuff (high cap, boring, works)
• 20% in projects with real roadmaps (mid cap, balanced)
• 10% in moonshots (low cap, do your research)

This way, you’re not depending on any single bet.

The Bottom Line

Market cap isn’t magic. It’s just a snapshot of what everyone thinks something’s worth right now. Tomorrow could be different.

But here’s what won’t change: smaller caps have more upside, bigger caps are more reliable. Pick your poison based on what you can afford to lose—not what you’re hoping to gain.

Stay sharp. Stay diversified. Keep learning.