Guide to researching stocks with Claude
How to use Claude for stock analysis
Claude can summarize a quarterly report, explain what an indicator measures, and check the arithmetic in a trade plan. It doesn't come with a market data feed, though. Ask it for a stock price without giving it a source, and you may get an old number or an invented one. So give Claude data it can cite, and check what it tells you before you rely on it.
Educational and informational only. Not investment advice. Slatemark is not a registered investment adviser, broker-dealer, or fiduciary. Trading involves substantial risk of loss, including the risk of total loss.
Slatemark is an independent service and is not affiliated with, endorsed by, or sponsored by Anthropic.
The short answer
Yes, Claude can help you analyze a stock, but it's only as current as the data it has. Without a connector, a search result, or data you paste in, it answers from training data that stops at a fixed date.
Get current, sourced data in front of Claude, then check its answer the way you'd check a colleague's spreadsheet: find the source, the time, and the math behind each number.
What Claude can see on its own
In a normal chat, Claude works from its training data, the web pages it finds when it searches, and anything you paste or upload.
Training data has a cutoff date. Anthropic publishes the cutoff for each model and notes that a model may not be aware of events after it. Prices, earnings results, and company guidance from after that date aren't in the model. Claude can still produce a plausible-sounding figure from memory, so don't trust a price that arrives without a source.
Web search helps with recent events. When Claude searches, it cites the pages it used. Anthropic's help page tells you to cross-check those sources and to use authoritative ones for critical decisions. A search result is still a page someone wrote earlier. A price on a news article or a cached finance page can be stale by the time Claude reads it, and the page may not say how stale.
Claude can't see your brokerage account, your watchlist, or your notes unless you connect them or share them in the chat.
Three ways to give Claude market data
1. Paste or upload it
Use this for data you picked yourself, such as an exported price history, a filing, or your own records. It starts going stale as soon as you export it, and Claude knows only the dates the file shows.
2. Let Claude search the web
Search works for news and recent events. Prices on web pages may be delayed or cached without a label.
3. Connect a data source
A connector returns structured prices, indicators, filings, and economic data that Claude can cite. Check what it covers, how fresh its data is, and what it's allowed to do in your accounts.
Price data is often delayed. Whatever you use, look for the time each price was recorded, not just the time you asked.
Connectors, skills, and plugins
Stock research tools for Claude come in the three forms Anthropic describes:
- A connector gives Claude access to a tool or data source. Each connector is a connection to an MCP server. MCP (Model Context Protocol) is the open standard AI clients use to call data tools. A market-data connector is how Claude gets prices, indicators, or filings it can cite.
- A skill is a set of written instructions, sometimes with scripts or reference files, that Claude loads when a task calls for it. A stock-analysis skill describes a method, such as which checks to run and how to report them. It isn't a market data feed.
- A plugin packages skills, connectors, and commands into one install.
You add all three from the Customize page in claude.ai or the Claude desktop app. You can also add a custom connector by its URL. Anthropic notes that custom connectors reach services it hasn't verified.
Before you connect anything that touches your money, read what it can do. A research connector needs to read data. It doesn't need to place orders or move funds. Slatemark's guide Is AI trading a scam? explains why it's worth choosing the narrowest permission that does the job.
How to check the numbers in an answer
A fluent answer can still contain a bad number. FINRA, writing with the SEC's investor education office and NASAA, warns that AI-generated information can rest on inaccurate, incomplete, or outdated data. It adds that AI output can be faulty, or even made up, when the inputs are accurate. Before you rely on a figure:
- Ask where it came from. A price, an earnings date, or a ratio should trace to a named source or a tool result you can see. If Claude can't point to one, treat the figure as unverified.
- Check when it was recorded. Look for a timestamp, and for whether the source calls the price delayed, end of day, or live. A close from last Friday and a quote from 10 minutes ago lead to different conclusions.
- Check the period and the units. Quarterly and annual figures, fiscal and calendar years, adjusted and unadjusted prices, and per-share and total amounts are easy to mix up.
- Redo the math. If Claude says your stop sits 2.1 average true ranges below your entry, ask for the inputs and divide them yourself. Do the same for percentages, averages, and position sizes.
- Notice what's missing. When a source has no confirmed date or no value, a good answer says so. A guessed date inside a fluent sentence is harder to catch than a blank.
Don't ask Claude to grade its own answer. Check the figure against its source, or against a second source.
Questions to ask before a trade
The questions below are examples of the kinds of checks professionals run before a trade. Each one asks Claude for a sourced fact or a calculation. Swap in your own ticker and plan:
- "What was [TICKER]'s most recent price, when was it recorded, and is it delayed?"
- "What has [TICKER]'s average daily volume been over the last 20 trading days?"
- "What is [TICKER]'s 14-day average true range? My planned stop is $4.50 below my entry. How many ATRs is that?"
- "If I buy 200 shares at my planned entry and sell at my stop, how much do I lose before fees and slippage?"
- "Are there scheduled events before my planned exit date, such as an earnings report or a Fed meeting? Tell me which dates are confirmed, which are estimates, and which you couldn't find."
- "What did [TICKER]'s latest quarterly filing report for revenue, and what period does it cover?"
None of these questions tells you whether to take the trade. They put the facts and the risk in front of you, and the decision stays yours. If the data source can't answer one, Claude should say so instead of filling the gap. With Slatemark, for example, earnings dates for a new idea aren't available.
What Claude can't do
Claude can't tell you what a stock will do next. It can describe what happened and compute what you ask for, but a pattern in past prices isn't a forecast. The CFTC's advisory on trading bots says AI can't predict the future or sudden market changes.
It also can't vouch for its sources. Claude can quote a page that's wrong, misread a table, or carry an error through a calculation. About your account, it knows only what you share or connect.
Whether Claude can place trades depends on the tools and permissions you give it. Slatemark can't place orders.
Where Slatemark fits
Slatemark is a connector for this kind of research. It supplies market data, calculations, and public research to the external AI client you bring through Model Context Protocol (MCP). Results show their source and time. Market prices are typically about 15 minutes behind live exchange prices. The external client writes the response. Slatemark does not host the AI model that produces your trading analysis.
In Claude, add Slatemark from Claude's directory, then sign in when asked. Slatemark works in Claude.ai, Claude Desktop, and Claude Code. Some Claude workspaces need an admin to allow Slatemark. The optional methodology file is something you may choose to install in your AI client; in Claude, it's a skill. The methodology and voice come from that file, not from Slatemark's factual server output.
Slatemark cannot place, modify, or cancel orders or move money. Slatemark does not sell signals or trade ideas. It does not tell you what to buy, sell, hold, size, or time.
Free includes one active supported AI-client connection to market data, technical calculations, public research, and optional private journal and framework context. Plus adds a read-only brokerage connection with current Account Data and periodic booked-activity reconciliation. Brokerage connections provide Account Data, not real-time market data. If you disconnect one, Slatemark deletes the broker-derived data from active systems. Standard retention and backup limits apply. Slatemark keeps the journal entries you wrote manually. Event coverage is partial: Fed meeting dates on every plan and economic release dates on Plus. Earnings dates for a new idea and most dividend dates aren't available.
Slatemark will not claim that journaling, reviewing patterns, using an AI client, or following a methodology will improve returns, reduce losses, or produce a particular outcome.
Slatemark is not a registered investment adviser; trading involves risk of loss.
Frequently asked questions
- Can Claude analyze stocks?
- Yes. Claude can summarize filings, explain indicators, compare companies, and check the math in a trade plan. Its answers are only as current as its data. Give it a connector or a source to cite, then check the source, time, and math behind each number before you rely on it.
- Does Claude have real-time stock data?
- Not on its own. Claude's training data stops at a cutoff date, and web search returns pages that may be delayed or cached. A market-data connector can supply prices with a source and a timestamp, but many feeds are delayed. Slatemark's market prices are typically about 15 minutes behind live exchange prices.
- What is a stock market connector for Claude?
- A connector links Claude to an outside data service through the Model Context Protocol (MCP). A market-data connector lets Claude request prices, indicators, filings, or economic data and cite the results. You add connectors from the Customize page in claude.ai or the Claude desktop app.
- What is a Claude skill for stock analysis?
- A skill is a set of written instructions, sometimes with scripts or reference files, that Claude loads when a task needs it. A stock-analysis skill describes a method, such as which checks to run and how to report them. It isn't a market data feed, so it works alongside a connector that supplies the data.
- Can Claude place trades for me?
- Only if you give it a tool that has trading permission. Read the permission screen before you connect any financial account. Slatemark cannot place, modify, or cancel orders or move money.
- Can Claude predict stock prices?
- No. Claude can describe past prices and compute statistics from them. The CFTC says AI can't predict the future or sudden market changes. If Claude offers a forecast, treat it as an estimate built on past data.
Primary sources
Anthropic
- Connectors, skills, and plugins
- Get started with custom connectors using remote MCP
- Enable and use web search
- How up-to-date is Claude's training data?
Regulators
- FINRA: Artificial Intelligence (AI) and Investment Fraud
- CFTC: AI Won't Turn Trading Bots into Money Machines
Slatemark is not affiliated with, endorsed by, or acting on behalf of these regulatory agencies.
Sources last reviewed October 12, 2026.