Should you touch altcoins? How big a slice won't break you

Let me admit it up front: I've bought altcoins myself. Back in 2021, the group chats were full of people showing off how many times some small coin had multiplied, and I couldn't resist. I put a chunk of money in, made some, lost some, and ran into one that later went almost to zero. Looking back, the biggest thing that experience taught me wasn't how much I made — it was learning to keep altcoins in the spot they belong: a corner where it wouldn't matter if I lost it all.

So this piece won't take the moral high ground and tell you "don't touch them." I know that won't land; I couldn't talk myself out of it back then either. I just want to walk through the math with you: if you're going to touch them, how to do it without doing real damage.

What counts as an "altcoin"

Put simply, apart from the few biggest, strongest-consensus names like bitcoin and ethereum, the thousands of remaining tokens can mostly be tossed into the "altcoin" bucket. Some of them are real projects with real uses and teams doing the work; a great many are pure hype on a concept, or outright scams from the start.

The trouble is that for a beginner, telling those two apart is extremely hard. Every project's whitepaper reads dazzling, every community looks on fire, and you can rarely tell before you buy which one is genuinely building and which one is there to harvest you. That "you can't see clearly" is itself the biggest source of altcoin risk.

High volatility plus a high zero rate — that's the baseline

Altcoins have two inescapable traits you have to acknowledge before buying.

One, they swing harder than the large caps. A roughly 77% fall in bitcoin during a deep bear is already terrifying — it hit a high of around $69,000 in November 2021 and at one point dropped to about $15,500 by November 2022 (from public market records). Over the same stretch, plenty of altcoins fell far more than that; drops of over 90% were commonplace. They rise faster than anything when things are good, and they fall just as fast.

Two, going to zero is a real ending. This is the most fundamental difference between them and the large caps. A large cap can bounce back after a deep bear because the consensus is still there; but an altcoin project can lose all value outright — a team that walks away, tech that never ships, a narrative that completely collapses — the price goes to zero with no volume left. This isn't a low-probability event; crypto history is littered with projects that fell. A large cap is a discount; an altcoin can be a fire sale of your principal.

If you must, treat it as a small "satellite"

The way I do it now is to picture my whole crypto position as a "core plus satellite" structure.

The core is the part I believe I can hold long-term, with relatively manageable volatility — usually the large caps. The satellite is the little sliver I use to reach for high upside while knowing full well it could be a total loss — and that's exactly where altcoins belong.

The beauty of this structure is that it draws a circle around altcoins from the start: you can gamble, experiment, and take high risk inside the circle, but the core outside it stays solid, and any single satellite blowing up won't shake your foundation. How to split that "core and satellite" I covered in a whole separate piece: Core and satellite: how to arrange your money. Here I'll just stress one thing — altcoins are always a satellite, never the core.

How much? One hard line

There's no standard answer on the exact share, but here's a hard test you can use:

Add up all your altcoins. If they all went to zero tomorrow, would it break you?

If the answer is yes, you've bought too much. What this line means is that altcoins as a whole can only be a small block of your crypto position. Many people keep the whole satellite slice under 20-30% of their crypto position, and any single altcoin smaller still — you have to assume any one of them could go to zero, so you can't let one coin's collapse flatten you.

My own dumb rule is this: each altcoin's size is small enough that even if it went straight to zero, I'd only frown at my account — I wouldn't lose sleep, I wouldn't think about borrowing money to win it back. The moment any altcoin's size grows big enough to affect my mood, I know it's time to trim. Whether you can sleep is a more accurate gauge than any percentage.

Never make altcoins the core

One of the most common beginner mistakes is getting swept up by some altcoin's moonshot story and, without noticing, turning it into the biggest block in your position. This is extremely dangerous — you've effectively staked the fate of your whole portfolio on the thing most likely to go to zero.

I've seen far too many people with no core built up, yet heavily gambling on three to five altcoins, flying high when they win and giving it all back with interest when they lose. That structure is, at heart, no different from gambling — it just wears the word "investing."

So no matter how moving an altcoin's story is, I remind myself: it's there to be the cherry on top, not the ballast. Ballast is the core's job. When an altcoin rises, it's a pleasant surprise; when it goes to zero, it was expected — that's the mindset that lets you hold steady. If one day you find an altcoin growing bigger and bigger in your position, that's when you trim it back to the satellite slot per your plan — which is also one of the things rebalancing is for, as I discussed in Do you rebalance, and how.

Recap

To wrap up: altcoins aren't untouchable, but their high volatility and zero risk mean they only deserve to be a small satellite position in your portfolio — bought with money you can lose, with the share capped hard, each single position small enough that going to zero won't break you, and never the core.

Put them in the right slot and you can reach for that bit of high upside without getting gutted by a single zero. That's the safe distance an ordinary person should keep with altcoins.