Agent skill · Business & Finance

longbridge-investors

SEC 13F fund-manager–centric view via Longbridge — top-50 active institutional investors by AUM, a specific manager's full portfolio snapshot (by CIK), and quarter-over-quarter holding changes (NEW / ADDED / REDUCED / EXITED). US stocks only. Different from longbridge-flows (stock-centric: who holds a symbol); this skill is manager-centric. Triggers: "基金经理持仓", "机构持仓排名", "大基金持仓", "巴菲特持仓", "贝莱德持仓", "13F基金视角", "基金经理排名", "AUM排名", "季度持仓变化", "基金經理持倉", "機構持倉排名", "大基金持倉", "13F基金視角", "季度持倉變化", "fund manager holdings", "institutional investor", "13F portfolio", "Berkshire holdings", "BlackRock positions

majiayu000github.com/majiayu000GitHub ↗
claude-codeMIT
Install
npx skills add majiayu000/claude-skill-registry --skill longbridge-investors --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 2
SKILL.md size: 5 KB
Bundled scripts: none
Version: 1.0.0
Declared author: longbridge
Path: skills/analysis/longbridge-investors/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 534
Language: HTML

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

# longbridge-investors Prompt-only skill. Provides a **fund-manager–centric** view of SEC 13F filings via the Longbridge CLI — who the biggest players are, what a specific manager holds, and how their portfolio changed quarter over quarter. > **Response language**: match the user's input language — Simplified Chinese / Traditional Chinese / English. ## When to use - *"全球最大基金经理有哪些"*, *"top institutional investors by AUM"*, *"全球最大基金經理有哪些"* - *"巴菲特现在持有哪些股票"*, *"Berkshire Hathaway 13F portfolio"*, *"巴菲特現在持有哪些股票"* - *"贝莱德上季度新建了哪些仓位"*, *"BlackRock new positions last quarter"*, *"貝萊德上季度新建了哪些倉位"* - *"巴菲特 CIK 是多少"*, *"什么 CIK 是贝莱德"* For stock-centric institutional-holder queries (*"谁持有 AAPL"* / *"who holds NVDA"*) → route to `longbridge-flows`. ## CLI Run `longbridge investors --help` to verify exact flags before use. Common calls: ```bash # Top-50 active fund managers by AUM (includes CIK for each) longbridge investors --format json # Full portfolio snapshot for a specific manager longbridge investors <CIK> --format json longbridge investors 0001067983 --format json # Berkshire Hathaway (Buffett) longbridge investors 0001364742 --format json # BlackRock # Limit to top N positions by market

What's inside
Steps it walks through
  1. When to use
  2. CLI
  3. Workflow
  4. Output
  5. Error handling
  6. MCP fallback
  7. Related skills
  8. File layout
Ships with 1 file
  • metadata.json
Commands it runs
Top-50 active fund managers by AUM (includes CIK for each)
longbridge investors --format json
Full portfolio snapshot for a specific manager
longbridge investors <CIK> --format json
longbridge investors 0001067983 --format json    # Berkshire Hathaway (Buffett)
longbridge investors 0001364742 --format json    # BlackRock
Limit to top N positions by market value
longbridge investors <CIK> --top 20 --format json
Quarter-over-quarter holding changes
longbridge investors changes <CIK> --format json
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About this skill
What does the longbridge-investors skill do?

SEC 13F fund-manager–centric view via Longbridge — top-50 active institutional investors by AUM, a specific manager's full portfolio snapshot (by CIK), and quarter-over-quarter holding changes (NEW / ADDED / REDUCED / EXITED). US stocks only. Different from longbridge-flows (stock-centric: who holds a symbol); this skill is manager-centric. Triggers: "基金经理持仓", "机构持仓排名", "大基金持仓", "巴菲特持仓", "贝莱德持仓", "13F基金视角", "基金经理排名", "AUM排名", "季度持仓变化", "基金經理持倉", "機構持倉排名", "大基金持倉", "13F基金視角", "季度持倉變化", "fund manager holdings", "institutional investor", "13F portfolio", "Berkshire holdings", "BlackRock positions

How do I install it?

Run `npx skills add majiayu000/claude-skill-registry --skill longbridge-investors --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

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