pp-yahoo-finance

What this skill does

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# Yahoo Finance — Printing Press CLI

## Prerequisites: Install the CLI

This skill drives the `yahoo-finance-pp-cli` binary. **You must verify the CLI is installed before invoking any command from this skill.** If it is missing, install it first:

1. Install via the Printing Press installer. It defaults binaries to `$HOME/.local/bin` on macOS/Linux and `%LOCALAPPDATA%\Programs\PrintingPress\bin` on Windows:
   ```bash
   npx -y @mvanhorn/printing-press-library install yahoo-finance --cli-only
   ```
2. Verify: `yahoo-finance-pp-cli --version`
3. Ensure the reported install directory is on `$PATH` for the agent/runtime that will invoke this skill.

If the `npx` install fails (no Node, offline, etc.), fall back to a direct Go install (requires Go 1.26.3 or newer):

```bash
go install github.com/mvanhorn/printing-press-library/library/commerce/yahoo-finance/cmd/yahoo-finance-pp-cli@latest
```

If `--version` reports "command not found" after install, the runtime cannot see the binary directory on `$PATH`. Do not proceed with skill commands until verification succeeds.

## When to Use This CLI

Reach for this CLI when an agent needs Yahoo Finance market data with deterministic JSON output, a local store that compounds across calls (portfolio, watchlist, history cache), or a working session from a rate-limited host. It is the only Yahoo Finance tool that joins your cost basis with live data and survives a 429 via a Chrome cookie fallback.

## When Not to Use This CLI

Do not activate this CLI for requests that require creating, updating, deleting, publishing, commenting, upvoting, inviting, ordering, sending messages, booking, purchasing, or changing remote state. This printed CLI exposes read-only commands for inspection, export, sync, and analysis.

## Unique Capabilities

These capabilities aren't available in any other tool for this API.

### Local state that compounds
- **`portfolio perf`** — Track YTD / 1Y / all-time returns on your holdings with cost basis, dividends, and current price baked in.

  _Reach for this when an agent needs to report 'how is my user's portfolio doing this year' — no single Yahoo Finance endpoint encodes cost basis._

  ```bash
  yahoo-finance-pp-cli portfolio perf --agent
  ```
- **`digest`** — One command: overnight news + biggest movers + earnings today + ex-div dates for everything on your watchlist.

  _Use as a single agent call for a 'daily market briefing' across a named set of tickers — replaces 4+ separate endpoint calls._

  ```bash
  yahoo-finance-pp-cli digest --watchlist tech --agent
  ```
- **`portfolio dividends`** — See total dividend income for the year, per-holding breakdown, and yield on cost.

  _Reach for this when the user asks 'how much have I earned in dividends this year' or 'what's my real yield on my JNJ position'._

  ```bash
  yahoo-finance-pp-cli portfolio dividends --year 2026 --agent
  ```
- **`insiders-net-buying`** — Surface companies where insiders are net buyers in the last N days, filtered to your watchlist.

  _Use when an agent needs a 'who's insiders actually buying' signal layer across the user's watchlist._

  ```bash
  yahoo-finance-pp-cli insiders-net-buying --recent 30d --watchlist tech --agent
  ```

### Agent-native compute
- **`options-chain`** — Filter an options chain to ATM/OTM/ITM contracts within a days-to-expiration window.

  _Use when an agent needs to surface 'OTM weekly puts on AAPL near earnings' without parsing a thousand-row chain._

  ```bash
  yahoo-finance-pp-cli options-chain AAPL --moneyness otm --max-dte 45 --agent
  ```
- **`screen-local`** — Run arbitrary P/E, P/B, yield, margin, and growth filters against the data you've synced locally.

  _Use to compose custom value/growth screens an agent can apply to a synced universe, far beyond Yahoo's 12 canned screens._

  ```bash
  yahoo-finance-pp-cli screen-local --pe-max 15 --roe-min 0.15 --agent
  ```
- **`compare`** — Multi-symbol price-plus-dividend total return ranked over a range.

  _Use when comparing actual holding-period returns rather than price-only deltas — the only Yahoo CLI that does this offline._

  ```bash
  yahoo-finance-pp-cli compare AAPL MSFT NVDA --range 1y --include-divs --agent
  ```
- **`options-covered-calls`** — Scan your holdings for covered-call candidates by annualized yield and DTE.

  _Use to surface 'wheel-strategy' covered-call candidates from the user's actual stock positions._

  ```bash
  yahoo-finance-pp-cli options-covered-calls --min-yield-annualized 0.10 --max-dte 45 --agent
  ```
- **`watchlist correlate`** — Pairwise Pearson correlation across the symbols in a named watchlist over a date range.

  _Use when an agent needs to flag concentration risk inside a watchlist — 'is this 'tech' watchlist actually 80% AAPL exposure'._

  ```bash
  yahoo-finance-pp-cli watchlist correlate tech --range 6m --agent
  ```

### Reachability mitigation
- **`auth login --chrome`** — Import your live Chrome session cookies when Yahoo's crumb handshake is blocked from your IP.

  _Reach for this when an agent's `doctor` reports 429 from the host's IP — Chrome's session cookies unblock the crumb handshake._

  ```bash
  yahoo-finance-pp-cli auth login --chrome
  ```

## Command Reference

**autocomplete** — Legacy autocomplete (faster than search)

- `yahoo-finance-pp-cli autocomplete` — Autocomplete symbols and company names

**chart** — Historical OHLCV price data

- `yahoo-finance-pp-cli chart <symbol>` — Historical price chart data for a symbol

**fundamentals** — Time series of fundamentals (quarterly/annual)

- `yahoo-finance-pp-cli fundamentals <symbol>` — Fundamentals time series (EPS, revenue, margin, cash flow, etc.)

**insights** — Company insights, valuation, and technical events

- `yahoo-finance-pp-cli insights` — Insights for a symbol: technical events, valuation, research reports

**lookup** — Symbol search and lookup

- `yahoo-finance-pp-cli lookup` — Search for symbols, news, and funds matching a query

**options** — Options chains for equities and ETFs

- `yahoo-finance-pp-cli options <symbol>` — Options chain for a symbol (calls and puts)

**quote** — Real-time quotes and quote summaries

- `yahoo-finance-pp-cli quote list` — Get current quotes for one or more symbols
- `yahoo-finance-pp-cli quote summary` — Deep quote summary including price, fundamentals, ownership, and filings

**recommendations** — Symbols related by analyst recommendation

- `yahoo-finance-pp-cli recommendations <symbol>` — Symbols that share recommendations with the given symbol

**screener** — Predefined and custom stock screeners

- `yahoo-finance-pp-cli screener` — Run a predefined screener by ID

**trending** — Trending symbols by region

- `yahoo-finance-pp-cli trending <region>` — Top trending symbols in a region right now


### Finding the right command

When you know what you want to do but not which command does it, ask the CLI directly:

```bash
yahoo-finance-pp-cli which "<capability in your own words>"
```

`which` resolves a natural-language capability query to the best matching command from this CLI's curated feature index. Exit code `0` means at least one match; exit code `2` means no confident match — fall back to `--help` or use a narrower query.

## Recipes

### Daily market briefing across your watchlist

```bash
yahoo-finance-pp-cli digest --watchlist tech --agent
```

Single command returns overnight news, biggest movers, earnings today, and ex-div dates for the symbols in the named watchlist.

### Year-to-date portfolio performance

```bash
yahoo-finance-pp-cli portfolio perf --agent --select symbol,unrealiz