Claude-skill-registry financial-data-template-populator

Populates an Excel template with financial data (stock prices, market trends, ownership) for a specified company. Reads requirement files, fetches data from Yahoo Finance, analyzes template structure, formats data, writes to Excel, and renames the output file.

install
source · Clone the upstream repo
git clone https://github.com/majiayu000/claude-skill-registry
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/financial-data-template-populator" ~/.claude/skills/majiayu000-claude-skill-registry-financial-data-template-populator && rm -rf "$T"
manifest: skills/data/financial-data-template-populator/SKILL.md
source content

Instructions

1. Understand the Request & Locate Files

The user will request to populate an Excel template with financial data for a specific company (e.g., NVIDIA/NVDA). They will provide:

  • An Excel template file (e.g.,
    results_template.xlsx
    ).
  • A data requirements file (e.g.,
    data.txt
    ).
  • A formatting instructions file (e.g.,
    tips.txt
    ).
  • A final output filename (e.g.,
    results.xlsx
    ).

First, read the requirement files to understand the exact data needed and formatting rules.

Tool Calls:

  • Use
    filesystem-read_multiple_files
    to read
    data.txt
    and
    tips.txt
    .

2. Analyze the Excel Template Structure

Examine the provided Excel template to understand its sheets, headers, and data ranges.

Tool Calls:

  1. Use
    excel-get_workbook_metadata
    on the template file to list its sheets.
  2. Use
    excel-read_data_from_excel
    on each sheet to see the column headers and empty data cells.

3. Fetch Required Financial Data

Based on the requirements (

data.txt
), fetch the necessary data. Common requirements include:

  • Stock Info & Fundamentals: Use
    yahoo-finance-get_stock_info
    .
  • Major Holders Summary: Use
    yahoo-finance-get_holder_info
    with
    holder_type: "major_holders"
    .
  • Institutional Holders Details: Use
    yahoo-finance-get_holder_info
    with
    holder_type: "institutional_holders"
    .
  • Historical Stock Prices: Use
    yahoo-finance-get_historical_stock_prices
    for a date range, or
    yahoo-finance-get_stock_price_by_date
    for specific quarter-end dates.

Key Data Processing:

  • Identify quarter-end dates (e.g., 2024-09-30 for Q3 2024).
  • Calculate Market Cap =
    Stock Price * Shares Outstanding
    .
  • Convert units as required (e.g., shares to millions, value to billions).

4. Format Data According to Rules

Strictly apply the formatting rules from

tips.txt
(e.g., "Round all numbers to two decimal places", "If the data is unavailable, fill in NaN").

5. Populate the Excel Template

Write the formatted data into the correct cells of the template.

Tool Calls:

  • Use
    excel-write_data_to_excel
    for each sheet, specifying the
    start_cell
    (e.g., "B2" for data below headers).

6. Finalize and Rename the File

After populating all sheets, rename the file to the user's requested output name (e.g., from

results_template.xlsx
to
results.xlsx
).

Tool Calls:

  • Use
    filesystem-move_file
    .

7. Verify Completion

Optionally, list the directory contents to confirm the final file exists and read back a sample of the data to ensure correctness.

Tool Calls:

  • Use
    filesystem-list_directory
    .
  • Use
    excel-read_data_from_excel
    on the final file.