# What is a credibility score, and why it decides everything > A credibility score is a measure of how right a voice has been before. It is the thing that separates a signal worth watching from a loud room full of nobody. Here is how it works. By Maya Koeva · 2026-07-06  Every voice talking about a stock is not worth the same. One is an account with years of calls you can check. Another is a fresh handle that shows up only when something is pumping. A [credibility](/learn/how-to-tell-if-a-finance-influencer-is-worth-following) score is how you tell them apart before you act, and it is the number doing most of the work behind a [signal](/learn/what-is-a-stock-signal). ## What a credibility score is A credibility score rates how trustworthy a voice has been, based on how their past calls actually resolved. It is not about follower count, tone, or how confident someone sounds. It is a record: when this account leaned bullish or bearish on a name, what happened next? Do that across every call an account has made and you get a single number for how much weight their next opinion deserves. ## How it is built The raw material is a [track record](/learn/how-a-track-record-is-graded). Each call gets graded against what the stock did afterward, and those grades accumulate. An account that has been right often, across many names and enough time to rule out luck, earns a high score. One that is usually wrong, or has barely any history, earns a low one. The score moves as new calls resolve, so it reflects the voice they are now, not the reputation they had two years ago. ## Why it decides everything Volume tells you how many people are talking. Credibility tells you whether to care. A name can pull thousands of mentions and still be noise if the accounts driving it have credibility near zero. Another can be quiet and still matter if the handful talking have earned it. That is the whole reason we weight signals by credibility instead of counting heads: the crowd's size is not its accuracy. ## Credible does not mean right A high-credibility voice is a voice worth hearing, not a guarantee. Good accounts are wrong all the time, and one credible call is not a promise about the outcome. What the score buys you is better odds and better questions, not certainty. Treat it as a filter that decides who gets your attention, not an oracle that decides your trade. ## How to use it When a stock lights up, do not ask only how loud the room is. Ask who is in it. A spike built on credible accounts leaning the same way is a different event from the same spike built on anonymous hype, even when the mention counts match. The credibility read is what turns raw volume into something you can actually reason about, and it is the difference we keep coming back to in [smart money versus the crowd](/learn/smart-money-vs-the-crowd). ## The bottom line A credibility score is memory. It remembers who has been right so you do not have to, and it lets a signal weigh a trusted voice more heavily than a loud stranger. Loud tells you where the attention is. Credible tells you whether it is worth respecting. --- *Quantral surfaces signals and context from public sources to support your own research. Nothing here is financial advice or a recommendation to buy or sell.*