About WhyTheMove
What this site is, who builds it, where the numbers come from, and how it pays for itself.
What this site is
WhyTheMove answers one question: why is this stock moving? Not what it moved — every quote site has that — but what caused it. Each ticker page carries a written explanation of the current move, refreshed through the trading day and adapted to the session, so a pre-market page talks about pre-market and an evening page talks about the close.
The distinguishing feature is that an explanation is only as good as what it is built from, so every summary shows its sources. If the move traces to an 8-K, an analyst action, or a sector-wide repricing, the page says so and links to what it read. Beyond today, ticker pages mark the historical catalyst days — the outsized moves in a stock's price history — and explain those too, so a chart becomes a sequence of events rather than a line. There is also a movers view and an earnings calendar for the wider picture.
Independence and sister sites
WhyTheMove is independent. It is not a media company, not a broker, not a fund, and not affiliated with any company, issuer, or research provider mentioned on the site. Nobody pays for coverage, placement, or a favourable description here, and no company covered has any say over what its page says. Being written about unfavourably is not something a company can buy its way out of.
We also run YieldMaxCalc, a dividend and DRIP calculator for option-income ETFs, and OptioNerd, an options analytics site. All three are relevant to each other: a YieldMax-style ETF is an options strategy written on a single stock, so why that stock moved is what the fund's next distribution is made of. ETF pages here link across to YieldMaxCalc where the payout maths is the thing you actually want.
Nothing on this site is financial advice. It is a data and context reference, produced by people who are not licensed financial advisers. An explanation of why a stock moved is not a view on where it goes next, and is not a recommendation to buy, sell, or hold anything.
Where the data comes from
- Prices, quotes, fundamentals, and earnings dates come from Financial Modeling Prep, including extended-hours quotes during pre-market and after-hours sessions.
- News headlines come from third-party financial news aggregators, filtered to the last few days so a stale article cannot be mistaken for today's catalyst. Each headline links back to its own publisher.
- Filings and wider coverage are found by web search — this is how 13D/8-K-driven moves get caught, since those often explain a double-digit day that the news feed alone does not.
- The explanations are written by a large language model from the sources above, on a weekday schedule, and stored so a day's reasoning stays readable after the news cycle has moved on.
That last point deserves to be blunt: the summaries are generated, not reported. A model can misread a source, over-attribute a move to a coinciding headline, or miss the real cause entirely. The sources are listed under every summary precisely so you can check it rather than take it. Data can also be wrong or stale — confirm prices and dates against your broker before acting on them.
How this site makes money
Two ways, and there are no ads in either. The first is subscriptions: today's featured movers and the daily market analysis are free to everyone, and a paid plan unlocks every other ticker, historical catalyst-day explanations, watchlists, and the daily email briefing. The second is a small number of affiliate partnerships with tools we actually use, disclosed in full below.
Affiliate disclosure
This section is the full disclosure required by the FTC, and it is deliberately blunt.
We participate in the Koyfin affiliate program. If you subscribe to a Koyfin plan after clicking one of our links, we receive a recurring commission on your payments — currently 25% — and you receive 20% off your first year. The discount is a genuine reduction on Koyfin's standard pricing; it does not cost you anything extra, and the price is not marked up to fund the commission. We also receive a discounted Koyfin licence of our own as part of the program.
Every affiliate link on this site is marked as such at the point of the link, opens in a new tab, and carries rel="sponsored". We do not place affiliate links inside AI summaries, source lists, catalyst explanations, or price tables, because those surfaces exist to answer a question and mixing a commercial link into them would compromise that.
A commission does not buy coverage or a favourable description. If a tool stops being worth recommending, the link comes down. If you would rather not send us a commission, going directly to koyfin.com costs you the 20% discount but works perfectly well.
What we use Koyfin for
We use Koyfin for our own research and for the analysis we publish elsewhere — multi-year charts across arbitrary ticker sets, sector and macro series, screeners, fundamentals, and custom dashboards. It is not used to produce anything on this site; the pages here are built from the data sources listed above.
Affiliate link — we earn a commission if you subscribe, at no extra cost to you. Full disclosure.
Corrections
A wrong explanation is worse than no explanation, so corrections, missing tickers, and bug reports are genuinely welcome. Replying to any watchlist briefing email reaches us.