Support and resistance, and why most of it is no better than chance
Traders watch certain prices where a coin “should” turn: support below the price, where a fall might stop, and resistance above, where a rise might stall. There are many ways to draw them. CheckACoin works out the common ones with the same formulas traders use, and then checks whether they actually worked on that coin.
The methods
- Daily pivots: from yesterday's high, low and close, a central pivot and levels above and below it.
- VWAP: today's average price weighted by how much was traded, with bands around it.
- Swing highs and lows: prices where the coin turned before on its hourly and 4-hour candles.
- Moving averages: the average close over recent periods.
How we test them
For each of the last 90 days, using only data from before that day, we work out each method's levels and watch what happened. A level is touched when the price comes very close to it, and it held when the price then moved clearly away instead of breaking through, within a day. We count random prices just as near the same way.
A method is called reliable on a coin only when it held clearly more often than random prices did, by a margin unlikely to be luck, and only after enough touches to judge. Otherwise we say plainly: “no better than a random price”, or “too few times to judge”.
What we found
When we checked SOL, BTC and ETH in October 2026, random prices “held” about 60% of the time, and every method came out close to that. None was reliable on those coins. That's why CheckACoin shows each level with its own honest label, and leads with the usual daily range instead, which held up when tested on later prices.
Every coin page shows its usual range, typical moves, market cap and supply, rebuilt daily.
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