etf-sector

etf-sector is a skill for Claude Code, Codex from daringanitch/claude-stock-analyst. It costs 44 tokens per session (494 once invoked), scanned A, original, MIT.

A guide for choosing exchange-traded funds, or ETFs, that represent a sector or investment theme. An ETF is a traded basket of assets, and the guide compares how different baskets provide exposure.

In plain words
What is it for?
Use it to define the desired sector exposure, compare relevant funds by holdings and fees, explain their different methods, and rank the best options for specific uses.
Why use it?
It helps avoid choosing an ETF that sounds right but holds the wrong companies, costs more, or is too concentrated for the intended view.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to define the desired sector exposure, compare relevant funds by holdings and fees, explain their different methods, and rank the best options for specific uses.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/daringanitch/claude-stock-analyst/etf-sector
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add daringanitch/claude-stock-analyst --skill etf-sector
Clone the repo
git clone --depth 1 https://github.com/daringanitch/claude-stock-analyst

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for etf-sector

README.md
[![agentmods](https://agentmods.dev/badge/skills/daringanitch/claude-stock-analyst/etf-sector/github.svg)](https://agentmods.dev/skills/daringanitch/claude-stock-analyst/etf-sector)
Your own site
<a href="https://agentmods.dev/skills/daringanitch/claude-stock-analyst/etf-sector"><img src="https://agentmods.dev/badge/skills/daringanitch/claude-stock-analyst/etf-sector/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for etf-sector

Your own site · 80×15
<a href="https://agentmods.dev/skills/daringanitch/claude-stock-analyst/etf-sector"><img src="https://agentmods.dev/badge/skills/daringanitch/claude-stock-analyst/etf-sector.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 494 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00044 $0.00494
Opus 5 $0.00022 $0.00247
Sonnet 5 $0.00009 $0.00099
Haiku 4.5 $0.00004 $0.00049

Measured 11d ago against content hash f7549e5c2840, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

etf-sector scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/etf-sector/SKILL.md · 48 lines

What it actually says

The user wants to express a view on a sector or theme via an ETF. Don't just list options — give a clear ranked recommendation.

1. DEFINE THE EXPOSURE What does owning this sector/theme actually mean?

  • What's the macro thesis driving interest in it?
  • What kind of companies should an ETF in this space hold?
  • What would a bad ETF in this space hold instead?

2. THE MAIN OPTIONS List the 3–5 most relevant ETFs for this sector/theme:

ETF Issuer AUM Expense Ratio # Holdings Index

3. METHODOLOGY DIFFERENCES This is the most important section — ETFs covering the "same" sector can be dramatically different:

  • Market-cap weighted vs equal weight vs revenue weighted?
  • Broad sector vs narrow sub-theme?
  • US-only vs global?
  • Pure-play vs mixed exposure?
  • What is the largest holding and does it dominate?

4. WHAT YOU'RE ACTUALLY BETTING ON For each ETF, one sentence: if you own this, what has to be true for it to outperform?

5. RANKED RECOMMENDATION

#1 [TICKER] — Best overall for most investors Why: cost, liquidity, clean exposure to the thesis

#2 [TICKER] — Best for [specific use case] Why: higher conviction / purer play / different factor tilt

#3 [TICKER] — Only if [condition] Why: niche use case, higher cost justified by specificity

6. WHAT TO AVOID AND WHY Name any ETFs in this space that look relevant but have hidden problems: excessive concentration, high fees, poor liquidity, methodology that drifts from the stated theme.

7. THE HONEST CAVEAT Is this sector ETF actually the right instrument for the thesis, or would a basket of individual stocks give cleaner exposure? When does the sector ETF work against you (e.g. owning XLE for oil but getting dragged by refiner holdings that move differently)?

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 48 lines · 44 tokens per session scan A f7549e5c2840

Subscribe to this mod's changes

etf-sector is a skill published in the GitHub repository daringanitch/claude-stock-analyst (9 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 494 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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