Stock News Sentiment Automation using Gemini AI, Google Sheets & Gmail

This workflow automatically fetches daily stock market news, analyzes sentiment using Gemini AI, calculates impact scores, sends alerts for high-impact news and stores structured results in Google Sheets.

Quick Implementation Steps

1. Import the workflow into your n8n account
2. Configure the Market News API (HTTP Request node)
3. Add your Google Gemini API credentials
4. Connect Google Sheets and create required columns
5. Configure Gmail node (add recipient email)
6. Activate the workflow

What It Does

This workflow runs every day at 8 AM and automatically collects the latest stock market news from a public API. It filters, cleans and processes the data to ensure only relevant and unique articles are analyzed.

Each news article is sent to Google Gemini AI, which classifies the sentiment as bullish, bearish or neutral, along with a confidence score and reasoning. The workflow then calculates an impact score based on sentiment and confidence.

High-impact news is immediately flagged and sent via email alerts, while all processed results are stored in a structured format in Google Sheets for tracking and analysis.

Who It's For

• Stock traders and investors
• Financial analysts
• Algo trading developers
• FinTech startups
• Anyone tracking market sentiment automatically

Requirements

To use this workflow, you need:

• n8n account (cloud or self-hosted)
• Public Market News API (already used in workflow)
• Google Gemini API credentials
• Google Sheets account
• Gmail account for sending alerts

How It Works & Setup Guide

1. Trigger Setup

• The workflow starts using Schedule Trigger
• Runs daily at 8 AM

2. Fetch Market News

• HTTP Request node calls:

https://api.tradient.org/v1/api/market/news

• No authentication required (public API)

3. Select & Limit News

• Code node extracts:

data.latest_news

• Limits to top 2 articles

You can change this limit in:

return output.slice(0, 2);

4. Normalize Data

• Ensures consistent fields:
  • news_object.title
  • news_object.text
  • stock_name

5. Remove Duplicate News

• Deduplicates using title
• Prevents repeated analysis

6. Process One-by-One

• Uses SplitInBatches
• Ensures controlled processing

7. Rate Limiting

• Wait node prevents API overuse
• Avoids hitting Gemini limits

8. Generate AI Prompt

• Creates structured prompt like:
  • Title
  • Content
  • Expected JSON output

9. AI Sentiment Analysis

• Uses Gemini model:

  models/gemini-3.1-flash-lite-preview
  

• Returns:
  • Sentiment
  • Confidence
  • Reason

10. Parse AI Response

• Removes markdown formatting
• Converts response into valid JSON
• Handles errors safely

11. Calculate Impact Score

Formula logic:

• Bullish → confidence × 1.2
• Bearish → confidence × -1.2
• Neutral → confidence × 0.3

12. High Impact Filter

• Conditions:
  • Impact > 60
  • Impact < -60

13. Email Alert Setup

You MUST configure:

• Recipient email in Gmail node (sendTo)

Example message:

Stock: XYZ
Title: News title
Sentiment: bullish
Impact: 75
Reason: Strong earnings report

14. Google Sheets Setup

Create a sheet with EXACT column names:

Title
Stock
Sentiment
Reason

Important:

• Column names must match exactly (case-sensitive)
• Do NOT rename fields
• Sheet must be connected in the node

How To Customize Nodes

Change Number of News Articles

Modify:

return output.slice(0, 2);

Adjust Impact Threshold

In IF node:

• Change:
  • > 60
  • < -60

Modify AI Prompt

Edit Generate Sentiment Prompt node to:

• Add more context
• Include additional fields

Add More Sheet Columns

Update Google Sheets node mapping:

• Add new fields like:
  • confidence
  • impact_score

Add-ons (Enhancements)

• Slack/Telegram alerts instead of Gmail
• Dashboard (Power BI / Looker Studio)
• Store historical trends in database
• Add stock price correlation
• Multi-language news analysis
• Increase batch size with queue system

Use Case Examples

1. Daily Trading Signals

   • Identify high-impact bullish/bearish news instantly

2. Portfolio Monitoring

   • Track sentiment around owned stocks

3. Market Intelligence Systems

   • Build automated research dashboards

4. Algo Trading Input

   • Feed sentiment into trading algorithms

5. Financial News Aggregators

   • Classify and rank news automatically

And many more custom use cases depending on your strategy.

Troubleshooting Guide

Issue	Possible Cause	Solution
No data in Google Sheets	Incorrect column names	Ensure exact match: Title, Stock, Sentiment, Reason
Emails not sending	Gmail not configured	Add credentials + recipient email
AI response parsing error	Invalid JSON from Gemini	Check Parse node logs
Duplicate news still appearing	Title mismatch	Improve deduplication logic
Workflow not triggering	Schedule inactive	Activate workflow
API returns empty data	API downtime	Test endpoint manually

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Need Help?

If you need help with:

• Setting up this workflow
• Customizing AI prompts
• Adding dashboards or alerts
• Scaling automation systems
• Building advanced trading workflows

Reach out to our n8n workflow development experts at WeblineIndia for advanced assistance.

We can help you build production-grade automation tailored to your business needs.