china-variance-commentary

china-variance-commentary is a skill for Claude Code from jwangkun/claude-for-financial-services-cn. It costs 76 tokens per session (1,464 once invoked), scanned A, original, Apache-2.0.

A writing guide for explaining why an A-share fund’s results and portfolio changes differed from its benchmark or earlier period. A-shares are stocks traded on mainland Chinese exchanges.

In plain words
What is it for?
Use it to analyse fund performance, compare results with a benchmark, explain gains and losses by asset or sector, and comment on portfolio changes.
Why use it?
It helps turn fund data into a structured explanation instead of leaving readers with unexplained return figures. It also follows Chinese fund-reporting conventions.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the china-earnings-reviewer plugin — 31 skills, 1 agent shipped together

Good fit Use it to analyse fund performance, compare results with a benchmark, explain gains and losses by asset or sector, and comment on portfolio changes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jwangkun/claude-for-financial-services-cn/china-variance-commentary
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 jwangkun/claude-for-financial-services-cn --skill china-variance-commentary
Clone the repo
git clone --depth 1 https://github.com/jwangkun/claude-for-financial-services-cn

Made for: Claude Code.

Or install china-earnings-reviewer, the plugin that ships this one along with the rest of its 31 skills, 1 agent.

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.

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README.md
[![agentmods](https://agentmods.dev/badge/skills/jwangkun/claude-for-financial-services-cn/china-variance-commentary/github.svg)](https://agentmods.dev/skills/jwangkun/claude-for-financial-services-cn/china-variance-commentary)
Your own site
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<a href="https://agentmods.dev/skills/jwangkun/claude-for-financial-services-cn/china-variance-commentary"><img src="https://agentmods.dev/badge/skills/jwangkun/claude-for-financial-services-cn/china-variance-commentary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,464 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00076 $0.01464
Opus 5 $0.00038 $0.00732
Sonnet 5 $0.00015 $0.00293
Haiku 4.5 $0.00008 $0.00146

Measured 13d ago against content hash 5f9f8480cd7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

china-variance-commentary 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 13d 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.

agent-plugins/china-earnings-reviewer/skills/china-variance-commentary/SKILL.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

china-variance-commentary

Purpose

Write professional 基金业绩点评 — structured variance commentary on fund performance and portfolio changes.

Data Sources

Tier 0 — 万得 Wind(最全面付费数据)

  • 覆盖:A股/港美股/基金/指数/债券/宏观/研报/分析(44个工具)
  • MCP 服务:wind-mcp(需 WIND_API_KEY 密钥,以 ak_ 开头)
  • 优势:全市场覆盖面最广、数据最全面、包含研报和量化分析
  • 密钥申请:https://aifinmarket.wind.com.cn/#/home

Tier 1 — 同花顺 iFind(付费精确数据)/ AkShare MCP(Tier-2 免费备选)

get_fund_data(fund_code)              → Fund NAV, performance
get_quote(ticker)                     → Individual security performance
get_index_data("000001")              → Benchmark data

Secondary Sources

  • 基金公司 — fund performance data
  • 托管行 — custody data
  • Wind / Choice — performance analytics

Workflow

Step 1: Gather Performance Data

Performance snapshot:

Metric Period Benchmark Active Return
净值增长率 X.XX% X.XX% X.XX%
年化收益率 X.XX% X.XX% X.XX%
波动率 X.XX% X.XX%
夏普比率 X.XX
最大回撤 X.XX%
卡尔马比率 X.XX

Step 2: Attribution Analysis

Performance attribution:

Factor Contribution Description
资产配置 (Allocation) X.XX% Sector/security weight decisions
个股选择 (Selection) X.XX% Security picking within sectors
交互效应 (Interaction) X.XX% Combined effect

Step 3: Sector Attribution

Sector performance:

Sector Weight Return Contribution Benchmark Weight Benchmark Return Allocation Effect Selection Effect
Total 100%

Step 4: Top/Bottom Contributors

Best/worst performers:

# Security Ticker Weight Period Return Contribution
1 (Best)
2
3
...
(Worst)
(2nd Worst)
(3rd Worst)

Read the full file on GitHub · 191 lines

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. 13d ago First seen · 191 lines · 76 tokens per session scan A 5f9f8480cd7d

Subscribe to this mod's changes

china-variance-commentary is a skill published in the GitHub repository jwangkun/claude-for-financial-services-cn (744 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 76 tokens to every session and 1,464 once invoked, about $0.0004 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 2026-08-30.

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