On 6 October 2025, Bitcoin closed at $124,658, the highest daily close in its history. That day, 77% of the 100 most-traded altcoins sat above their own 200-day line. The market looked broadly carried.
Counted across every altcoin on Binance with enough trading history, it was 41%.
Four days later the two numbers stood at 22.5% and 7%.
Which of the two described the market on 6 October?
One question, two answers
The measure is simple: how many altcoins close above their own average of the last 200 days? It serves as a health gauge: if most sit above the line, the market carries a move in breadth. If most sit below, only a few are running.
As of 23 October 2026:
| Counted | above the 200-day line | median distance to the line |
|---|---|---|
| the day's 100 most-traded altcoins (92 with enough history) | 69.6% | +10.8% |
| every altcoin on Binance (392 with enough history) | 40.3% | โ4.0% |
One number says: a clear majority in an uptrend. The other says: the majority is below, the typical coin almost 4% under its line.
Both numbers are right. They count different markets.
The top is almost always ahead
A single day could be chance. Across the full history it is not.
Since 2018 there are 3,156 trading days on which both counts cover enough coins to be compared. On 72% of them, the 100 most-traded were ahead. On no single day were they more than 2.8 points behind.
| Year | median lead of the top 100 | days with a lead of 20 points or more |
|---|---|---|
| 2018 | 0.0 | 0 |
| 2019 | 0.0 | 0 |
| 2020 | +0.3 | 17 |
| 2021 | +10.2 | 39 |
| 2022 | +6.5 | 2 |
| 2023 | +14.5 | 55 |
| 2024 | +10.2 | 53 |
| 2025 | +11.2 | 111 |
| 2026 | +13.2 | 62 |
2018 and 2019 read zero because fewer than 100 altcoins had 200 days of history back then. The top 100 simply were all of them. As the count grew, the gap opened, and in 2025 it stood at 20 points or more on 111 days.
Since 24 April 2026, the set of coins trading each day is recorded on that day. Over these 183 days, with no reconstruction at all, the median lead is 17.7 points. On 19 October it was 38.6: 81.7% against 43.1%.
The gap is not an outlier. It is the normal state of a market with many coins.
The list picks the winners every day
Why are the most-traded almost never behind? Because the list is not a fixed group.
"The 100 most-traded" is set anew every day. On 23 October 2026, 15 coins entered the list and 15 dropped out. A coin whose price rises attracts trading volume and moves up. A coin that has been falling for months loses volume and slips out. The rotation is counted; the direction of the gap fits exactly this mechanism.
So breadth across the top 100 partly measures its own selection. Ranking by volume has already sorted in the coins with a tailwind before the first line is drawn.
A volume ranking is not a neutral slice of the market. It is a selection of the move.
"But the top 100 are the market that matters"
The strongest objection: the money sits in the 100 most-traded coins. The 300 behind them are small, illiquid, some forgotten. Why should they set the gauge?
For the question of where capital flows, that holds. For the question of whether a move is broad, it does not. Breadth asks how many take part, not how much money sits in the leaders. And because the top 100 are reshuffled daily, they are part of the very move they are meant to measure.
Then there is your own position. If you hold a smaller altcoin, you are in the 300, not the 100. For that portfolio, the count across all coins is the one that applies.
Money follows the leaders. Breadth asks about everyone else.
When the counts disagree about the majority
It is clearest when one number sits above 50% and the other below. Then one count says "most are rising" and the other "most are falling".
That happened on 299 of the 3,156 comparable days. 35 of them fall in 2026, including 20, 22 and 23 October. On 20 October, 83.0% of the top 100 were above the line, and 48.0% of all coins.
Reading "altcoins are rising" on such a day means reading the top, not the market.
What October 2025 shows, and what it does not
Back to the all-time high. On 6 October 2025, 77.0% of the top 100 were above their line, but only 41.1% of all coins. Three days later, on 9 October, the gap was 40.1 points, the largest since the series began. On 10 October both numbers collapsed, to 22.5% and 7.0%.
That looks like a warning one could have read. It is not established. October 2025 is a single case, and whether a large gap announces declines has not been measured for this piece. On top of that, values before April 2026 are rebuilt from the Binance archive. Delisted coins are included up to their last trading day; the values are still marked as an upper bound, not a day-by-day observation.
One case shows what it can look like. It does not show what comes next.
What to do with two numbers
- With any breadth number, ask first whom it counts. "70% of altcoins" without the group is half a statement. In 2026 the difference has a median of 13 points, on some days almost 40.
- Use the group that matches your portfolio. If you hold large, liquid coins, the top 100 are your gauge. If you hold smaller ones, the count across all coins is.
- Read the gap itself. When the top 100 lead by 20 points or more, a narrow top carries the move. That describes a state. It is not a sell signal.
Both counts, with denominator and history since 2017, sit side by side on the Altcoin Market Breadth page. A different question, whether altcoins are currently beating Bitcoin, is covered in Altcoin Season in Sight: Is It Time to Switch Out of Bitcoin?.
Still unmeasured: did a gap of 20 points or more announce weaker weeks afterwards in the past? That would be the next measurement, with the rules fixed before the first run.
How it is computed
The share of coins whose daily close sits above their own simple 200-day average. Only coins with at least 200 daily closes enter the denominator; younger ones drop out rather than counting as "below". Universe: Binance spot pairs quoted in USDT, USDC or FDUSD, each coin once, excluding Bitcoin, stablecoins, leveraged tokens and tokenized securities. "Top 100" means the 100 coins with the highest trading volume of that day. From 24 April 2026 the universe is recorded day by day; before that it is rebuilt from the Binance archive. Only days on which both counts cover at least 70% of their coins are compared. Source: Binance, retrieved 24 October 2026.
FAQ
Why the 200-day line? It is the most common trend boundary on daily charts. A coin above it is in a longer-term uptrend, below it in a downtrend. To ask how many coins take part, that simple boundary is enough.
Why do young coins drop out of the count? A coin with fewer than 200 trading days has no 200-day line yet. Counting it as "below" would push breadth down artificially. That is why every number carries its numerator and denominator, for example 392 of 404.
Do delisted coins distort the number? Not since 24 April 2026: the universe is recorded each day as it traded that day. For earlier years, delisted coins are included up to their last trading day. The rebuilt values are still marked as an upper bound, because not every day can be reproduced exactly.
Is this the same as the altcoin season? No. The altcoin season asks how many altcoins did better than Bitcoin over the last 90 days. Breadth asks how many stand above their own trend. The two can say different things at the same time.
Why trading volume rather than market cap for the top 100? Daily trading volume exists for every Binance pair over the full history; a daily market cap for all coins does not. A market-cap list is also reshuffled constantly: what rises grows larger and moves up.
Not investment advice, not a recommendation, not a forecast. Historical patterns are no promise.
Study the Past โ Improve your Future ๐ฅ