Where the data comes from
20feeds, every one named below
Free public sources. When a field is missing, it stays empty. Nothing is filled in.
Source by source
| Powers | Source | Freshness | Limits |
|---|---|---|---|
| US stock prices | Yahoo Finance, via our edge server | Real time | Other exchanges are delayed. TradingView takes over when Yahoo fails. |
| Quote stats: market cap, P/E, EPS, yield, beta, 52-week range, targets | TradingView public scanner | 15 min delay | Includes pre- and post-market. Fields it lacks stay empty. |
| Charts and price history | Yahoo Finance chart; stockanalysis.com | 1 minute to 5 years | Daily bars are dividend-adjusted. |
| Screener, movers, most valuable | TradingView market scan; Finviz as backup | 15 min delay | Nasdaq, NYSE and AMEX listings only. |
| Crypto | CoinGecko | 24/7 | BTC, ETH, SOL, XRP and DOGE. |
| Currencies | Frankfurter (European Central Bank rates); open.er-api.com for the rest | Daily, cached 6 h | Reference rates, not dealing prices. |
| Headlines | Google News; Bing News as backup; Yahoo Finance RSS | Cached 10 min | Headlines and links only. |
| Analysis under a stock's news | Seeking Alpha public feed | Cached 5 min | Headlines and links only. |
| Income, balance sheet, cash flow, revenue split | SEC XBRL (company facts and the filing itself) | As filed, cached 1 h | US SEC filers only. Q4 is the full year minus the first nine months. |
| Filings: 10-K, 10-Q, 8-K | SEC EDGAR | Cached 15 min | US SEC filers only. |
| Insider trades | OpenInsider (SEC Form 4) | Cached 30 min | Only as fast as insiders file. |
| Smart Money portfolios | SEC 13F-HR filings, tickers via OpenFIGI; House and OGE disclosures | Quarterly | 13Fs arrive up to 45 days after the quarter. Pelosi and Trump holdings are range midpoints, so estimates. |
| ETF holdings | SEC N-PORT filings (fund series via SEC's fund ticker file) | Quarterly, cached 1 h | Public about 60 days after each fiscal quarter. US-registered funds only. |
| Institutional holders, earnings dates and surprises | Nasdaq | Cached 1 h | US listings. |
| Company profile: CEO, staff, headquarters | stockanalysis.com; Wikidata and Wikipedia as backup | Cached | As the source lists it. |
| Macro, calendar, Fed and sector boards | TraderHub (traderhub.openalice.ai) | Cached 5 min | Whatever the board carries. |
| Fear & Greed | Our own score from SPY, VIX, VIX3M, TLT, HYG and IEF closes plus a TradingView scan | Every 15 min | A mood gauge, not a timing tool. Won't match CNN's number exactly. |
| Quant factor history | Ken French Data Library (Dartmouth) | Cached 7 days | US factors, daily, back to 1926. |
| Marvell web search and page reading | Bing; DuckDuckGo as backup | Cached 10–15 min | A last resort. Never used for a price. |
| Your broker (optional) | moomoo, your own account | Your broker's feed | Only if you connect it. |
How Marvell gets its numbers
get_quoteget_price_historyget_financialslist_filingsread_filingget_insider_tradesget_newsscreen_stockscompany_profileget_investor_holdingscalculateweb_searchread_webpage
Every quote, filing or fact is fetched fresh in the same turn, from the tools above.
Each source gets a number. Marvell is told to cite every figure to one. Check the source when it matters.
Deep Research ends with a pass that checks the report against its sources.
A set of chat and Deep Research questions runs through the real app.
The tests check automatically that the right tools were called, that no answer tells you to buy or sell, and that answers stay short. A model then grades each answer against a rubric (the same model by default). That grade is noisy, so we read it as a second opinion. We don't publish an accuracy score.
Market data is free and delayed, and may be incomplete or wrong. AI answers can be wrong. Nothing here is investment advice or a recommendation to buy or sell anything. See the Terms.