Own productLive
Trade Insight
Portfolio analytics for Trade Republic accounts, enriched with AI-driven news analysis and fundamentals.
The public landing page
Profit and loss across all trades
Holdings, valued today
Headlines, pre-sorted by AI
Earnings of the week
Starting point
Trade Republic provides portfolio data but no reliable profit-and-loss calculation across multiple buy and sell events per security, and no market context. Third-party tools are expensive, opaque, or a poor fit for the German use case.
Solution
A web app designed and built from scratch that enriches portfolio data from six external sources: news sentiment, earnings briefings in German and English, five-year fundamental trends, plus a calendar of upcoming earnings. Language models run as a chain: when one fails or gets too expensive, the next takes over. Every model sits in the EU, and each task has its own order so running costs stay predictable. Every data point carries its source as metadata. The Trade Republic connection runs through an existing library that we cut down to the part the service actually uses — less foreign code means less that can break.
Outcome
Running in production with real users. Accepted into the AWS and Datadog startup programmes, which contribute infrastructure credits.
Tech used
- Next.js 16
- Fastify
- Postgres + Drizzle
- FastAPI
- ts-rest
- Zod
- Docker
- AWS Bedrock