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← All work · 01 / 06

My fintech startup: the stock market in plain English

heybera.com

A free website about the stock market for everyday investors. Every morning a story of the day, earnings coverage before and after each report, an economic calendar, company research and live prices. I pick the stories and approve everything before it goes out.

Role
Founder and editor; product, writing rules and build, working with AI
Status
Live · heybera.com
Period
October 2026 – today
Stack
Next.js, TypeScript, PostgreSQL (Supabase), Vercel, Claude
Links
heybera.com
34
companies with in-depth research
53
investor letters summed up in plain English
6
economies in the economic calendar
1
story of the day, every market day

Video and screens

The heybera.com landing page, scrolled top to bottom.
Dashboard: the story of the day opens the page
Dashboard: the story of the day opens the page
Company page, Research: the verdict on NVIDIA in plain English, what one share is worth and four quick grades
Company page, Research: the verdict on NVIDIA in plain English, what one share is worth and four quick grades
Company page, Overview: what the company does, written from its annual report, with the share price
Company page, Overview: what the company does, written from its annual report, with the share price
Financials: the company in four numbers (sales, profit, cash, shares), then the full statements
Financials: the company in four numbers (sales, profit, cash, shares), then the full statements
Industry: NVIDIA against all 67 semiconductor companies on growth, margins and valuation
Industry: NVIDIA against all 67 semiconductor companies on growth, margins and valuation
Dashboard: this week’s earnings and quick research
Dashboard: this week’s earnings and quick research
Story of the day: one story each morning about what moved the market the day before
Story of the day: one story each morning about what moved the market the day before
Earnings: every big company reporting this week, what analysts expect and, after the report, the verdict
Earnings: every big company reporting this week, what analysts expect and, after the report, the verdict
Bera Portfolio: our own portfolio, shown live in percentages
Bera Portfolio: our own portfolio, shown live in percentages
Screener: every US stock, more than 5,000 companies, filtered by sector, size, valuation and more
Screener: every US stock, more than 5,000 companies, filtered by sector, size, valuation and more
Charts: up to four companies compared on a number from their own SEC reports
Charts: up to four companies compared on a number from their own SEC reports
Economic calendar for six economies: the dates that move markets, with forecast and previous value
Economic calendar for six economies: the dates that move markets, with forecast and previous value
Heatmap of the S&P 500, Nasdaq 100 and Dow 30 with live prices
Heatmap of the S&P 500, Nasdaq 100 and Dow 30 with live prices
Investor letters: 53 letters from 37 investors, each summed up in plain English
Investor letters: 53 letters from 37 investors, each summed up in plain English
Portfits, the fun part: what famous people might own. Not their real portfolios
Portfits, the fun part: what famous people might own. Not their real portfolios
The week’s stories of the day
The week’s stories of the day
Landing page
Landing page

The idea

Most market news is written for people who already understand it. I wanted a site that explains the market to an ordinary person: what happened, why it matters and who it hits, with an example from everyday life.

The model: the data is free (prices, earnings, the calendar, research), and later people pay for an AI assistant and for the Bera Letters, a paid newsletter.

Timeline

  1. First version live on heybera.com: Next.js, a PostgreSQL database, the first company research.

  2. Research tab and an AI chat about each company. US economic data (BLS, BEA) starts arriving on its own.

  3. Dashboard redesign: a newspaper layout instead of a generic app.

  4. Market news: headlines from CNBC, sorted by topic and scored for importance.

  5. Charts, investor letters, a new earnings page, a stock screener and the heatmap.

  6. Live prices (Alpaca, Finnhub) and an S&P 500 calculator with data back to 1928.

  7. Full redesign in black, with a new logo.

Every feature

01

Story of the day

One story each morning about the day before. With AI I go through sources from X (Twitter) to CNBC, pick the story that mattered most, and approve the draft before it is published. Each story stays up for seven days.

02

Earnings, before and after

For every big company reporting the next day: what analysts expect, checked against a second source, and the questions that decide the result. After the report: the numbers and a verdict.

03

Economic calendar

Inflation, jobs, central-bank decisions and business surveys for the US, the eurozone, Canada, Japan, Australia and Switzerland. Click an event to see what it means and who feels it most. US results fill in on their own when they are released.

04

Company pages

Every company on the NYSE and Nasdaq gets its own page, built from the numbers it reports to the SEC: overview, research, financials, ownership, industry, dividends, modeling and filings. 34 companies also have in-depth research in plain language, with a verdict, what one share is worth and what could go wrong.

05

Investor letters

53 letters from 37 investors, from legends to hedge funds, each summed up so it can be read in two minutes.

06

Tools

A stock screener, a heatmap of the S&P 500, Nasdaq 100 and Dow 30, charts to compare companies, live prices and portfolios people can build and follow.

Where the data comes from

  • Prices: Alpaca and Finnhub, live during market hours.
  • Companies: SEC filings and earnings reports.
  • Economy: the US statistics offices (BLS, BEA) and a weekly calendar for six currencies.
  • News: CNBC headlines, sorted by topic and scored by AI for importance.

Everything sits in one PostgreSQL database. Scheduled jobs load new earnings and economic results on their own, only when something is due, so the site keeps working without my computer.

How I write

Every text has to make sense to someone who has never bought a share: a comparison from everyday life and one concrete example. We say investments, never trades, because the site is about owning companies, not gambling on prices.

Next

More research every day, the paid AI assistant and the Bera Letters newsletter.

What I decided

  • What heybera is for: explaining the market to ordinary people, free data first.
  • Which story leads the day, and every text before it goes out.
  • A newspaper look, with real photos and strong colours.
  • Investments, never trades.

What the AI did

  • Built the Next.js site, the database and the scheduled jobs.
  • Drafts research and stories by my writing rules.
  • Scores market news by importance.

Where I corrected it

  • Gave the site a generic “AI app” look (sparkles, grey chat bar). I asked for a newspaper.
  • Wrote earnings previews automatically that were not good enough. I switched that off and approve them by hand every day.
  • Darkened and blurred the left side of photos behind headlines. Now photos stay as they are.

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