A stock is loud when it is loud for itself.

Mentions are not attention

Counting mentions produces the same answer every day: the largest companies win. Three things have to come out of the raw count before what is left says anything.

Company size

Big names are always mentioned. Each stock is ranked inside its own size class, so a small company being unusually loud is not buried under a mega-cap being ordinarily loud.

Busy days

When markets move, chatter about everything rises together. Each stock is measured as a share of the day's whole conversation, so a loud day does not make every name look interesting.

A few loud accounts

A handful of accounts posting repeatedly is not a conversation. When the talk about a name comes from very few voices, it is held back rather than counted as interest.

How to read the chart

Every circle is one US-listed stock. Position carries the finding; size carries the crowd; the bands carry company size.

The two say different things, and the interesting case is when they disagree. A large circle far to the left is a name that many people are discussing and that is far above its own normal. A large circle on the right is a household name having an ordinary day.

The period control switches how much conversation is counted — one day, seven days, or thirty. Longer periods let quieter names clear the bar, because a stock that gets one or two voices a day can still gather a real crowd over a week.

Updated once a day, and only once

The board is rebuilt one time per day, after the US market day has closed, and the date it covers is printed on the page. Nothing here moves between updates — there is no live feed, no ticking counter, and no intraday revision.

If a day's collection or its checks fail, that day is not published at all: the previous board stays up until the next complete one is ready. A stale-but-whole picture is more honest than a fresh partial one.

What this is not

• Not investment advice. Nothing here is a recommendation to buy, sell, or hold anything. It is a record of what is being discussed.
• Not a quality signal. Attention is not approval. Stocks are discussed for bad news as often as good, and heavily discussed names are not better investments than quiet ones.
• Not a market-cap map. Circle size is how many people are talking, not what a company is worth.
• Not a forecast. Being talked about today says nothing about tomorrow's price.

Limits worth knowing

• Only the top 100 names for the selected period appear. A stock missing from the board is not necessarily quiet — it simply is not in the top 100 for that period.
• US-listed stocks only. Companies without a size class of their own are grouped as unclassified rather than estimated.
• A name can be loud for reasons that have nothing to do with the company — a shared word, a news cycle, a coincidence of initials. The board reports the conversation, not its cause.