10k-digest
Deep-read a 10-K annual report and output a structured markdown digest — abstract, section summaries, key metrics, and sourced…
Track changes in institutional holdings and identify smart money moves from 13F filings
$ npx -y skills add yennanliu/investskill --skill institutional-ownership --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
/institutional-ownershipContext preview
The summary Claude sees to decide when to auto-load this skill.
Track changes in institutional holdings and identify smart money moves from 13F filings
description: Track changes in institutional holdings and identify smart money moves from 13F filings
Before running any analysis, always retrieve the latest market data for the ticker:
1. **Fetch current price** — use web search or ask the user for the live price, 52-week range, and market cap. Never assume a price from training data. 2. **Confirm key figures** — recent earnings, revenue, key ratios (P/E, P/S, etc.) as applicable to this skill. 3. **State your data source** — fill in the `Data & Sources` header (next section) so the origin, as-of date, retrieval path, and confidence of every figure are explicit at the top of the output. 4. **Flag stale data explicitly** — if live data is unavailable, display this warning before proceeding:
> ⚠️ **Live data unavailable.** The following analysis uses training-data estimates which may be significantly out of date. Verify all prices and metrics before making any decisions.
Never silently substitute training-data estimates for current prices. When in doubt, ask the user to paste the latest quote.
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The first thing in the output is this provenance block, filled in — never left as placeholders. It is the standard documented on the [Data & Accuracy](https://yennanliu.github.io/InvestSkill/data-and-accuracy.html) page and the first thing `result-validator` looks for:
Data & Sources As of: <date the figures represent, e.g. 2026-06-30> Source: <primary docs — SEC EDGAR 10-K/10-Q, company IR, FRED, exchange data …> Retrieval: <pasted by user | web/tool retrieval | model memory> Confidence: <HIGH | MEDIUM | LOW>
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Comprehensive analysis of institutional investor holdings to identify "smart money" trends, ownership concentration, and investment signals from SEC 13F filings.
Provide current snapshot of institutional holdings:
**Aggregate Statistics**
**Ownership Trend (4 Quarters)**
Quarter Institutional % # of Holders Change from Prior [Qn YYYY] [%] [N] [±%] [Qn-1 YYYY] [%] [N] [±%] [Qn-2 YYYY] [%] [N] [±%] [Qn-3 YYYY] [%] [N] [±%]
**Trend Interpretation**
Identify and analyze largest institutional positions:
**Top 10 Holders Table**
| Rank | Institution | Type | Shares Held | Value ($M) | % of Portfolio | % of Company | Change (QoQ) | |------|-------------|------|-------------|------------|----------------|--------------|--------------| | 1 | Vanguard Group | Index | 45.2M | $6,780 | 0.8% | 8.5% | +2.1% | | 2 | BlackRock | Index | 38.1M | $5,715 | 0.6% | 7.2% | +1.5% | | 3 | State Street | Index | 22.3M | $3,345 | 1.2% | 4.2% | -0.3% | | 4 | Fidelity | Active | 18.7M | $2,805 | 2.1% | 3.5% | +15.2% | | 5 | ... | ... | ... | ... | ... | ... | ... |
**Holder Categories**
Analyze recent changes in institutional holdings:
**New Positions (Initiated)**
| Institution | Shares | Value ($M) | % of Their Portfolio | Significance | |-------------|--------|------------|---------------------|--------------| | ARK Invest | 2.5M | $375 | 3.2% | High (active, thematic) | | ... | ... | ... | ... | ... |
**Increased Positions (>25% increase)**
| Institution | Previous Shares | New Shares | Change | New Value | Notes | |-------------|----------------|------------|--------|-----------|-------| | ValueAct Capital | 5.0M | 8.2M | +64% | $1,230M | Activist, 4th increase | | ... | ... | ... | ... | ... | ... |
**Decreased Positions (>25% decrease)**
| Institution | Previous Shares | New Shares | Change | Current Value | Reason | |-------------|----------------|------------|--------|---------------|--------| | Tiger Global | 12.0M | 4.5M | -62% | $675M | Re
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