Personal finance and investing
SEC filing stock research tools
Tools that pull SEC filings, fundamentals, insider and institutional data into screeners, AI-generated reports, alerts, and APIs for researching public company stocks.
Built for: Retail investors and fintech developers
Projects since May 04
110
Different builders
105
Last 4 weeks vs 8 before
+16%
AI is the core
15%
Projects per week
Mostly web app (65%), api or backend service (15%), developer tool or library (4.5%) · from r/SideProject, r/SaaS, r/IMadeThis, r/ShowYourApp
Latest
- Cash Div — Provides a tool for Colombo Stock Exchange dividend information.“How my indie web app subdomain managed to rank #3 on Google, right below the official Colombo Stock Exchange (cse.lk)”
- Renders companies as buildings on a 3D island, with building height scaled to market cap.“I vibe coded a 3D island where every building is a company”
- StocksWatch research kit — Provides a free template for organizing research questions, evidence and assumptions about a single stock.“I built a free NBIS research kit looking for feedback”
- Choice — Flags company actions that conflict with a user's chosen values while browsing and links to evidence and alternatives.“I made a browser extension that shows whether a company’s actions clash with your values before you buy”
- Vewya — Compiles business ownership, donations, government contracts, and stock trades into searchable profiles and lets users rate businesses against their own values.“I’ve spent the past 10 months building Vewya.com to help people hold businesses and public figures accountable.”
- HYFOS — Maps thematic investing ecosystems by linking companies, suppliers, customers and bottlenecks to their source filings.“I’ve spent last 8 months building an intelligence platform around thematic investing.”
- Automates corporate research and maps complex company ownership structures for professional firms.“Launched my first B2B SaaS at £99/seat/month. LinkedIn outreach isn't working. How would you build a GTM strategy?”
- exdate — Tracks dividend ex-dates and payment dates for stocks in a calendar view.“Waste of time or keep going”
- Investor Dashboard — Displays dense financial data on a single screen with a keyboard-navigable interface for scanning and spotting market shifts.“Finance experts need high data density, but most tools look like '90s spreadsheets. Here’s how we modernized a heavy UI without dumbing it down.”
- Pyx — Tracks investment portfolios and pulls company financials from SEC filings into a local native charting and research workspace.“I built a portfolio tracker in 100% Rust. It knows 18 years of a company's financials and is completely private”
- Wall Street Score — Summarizes financial data for stocks into scores so users can research a company without visiting multiple sites.“I Built a stock scoring research site , can you tell me what’s confusing or difficult to use?”
- Returnolio — Scores public companies on quality and value using cited SEC filings and publishes a monthly list of ten holdings with reasoning.“A stock I copied from YouTube cost me real money in 2021. Five years later I am grateful for it, and I built the tool I wish I had then”
- ValueMap — Displays a company's valuation ratios against its own history alongside 10 years of financial statements and SEC insider filings, plus a free stock screener.“I spent 3 years building the stock analysis tool I wanted as a former analyst (8 years in software). The screener is free, no signup”
- Moss Terminal — Shows global market indices, government rates, FX, and company price charts with news, earnings and ownership links.“Moss Terminal — a free financial research app I made for iPhone”
- StockManTools — Provides historical valuation charts, side-by-side stock comparison, and a simplified 10-year bull/base/bear DCF projection for equities.“I built a free stock analysis tool after getting frustrated with Bloomberg's price tag — would love feedback from actual investors”
- FirmSignalIQ — Returns source-attributed facts observed from a company's public website, such as page titles, technology signatures, social links, pricing and careers pages, and changes over 90 days.“I built an API that attaches sources to company website data. Is narrower but traceable data more useful?”
- US Stock Sense — Screens, researches, compares and tracks US stocks, including financials, SEC filings, insider activity and portfolio monitoring, in one workspace.“I made US Stock Sense — screen, research, compare & track US stocks in one place”
- European company registry connectors — Queries official UK, French, Norwegian and Czech company registers via direct API calls and returns company records.“I built 5 open-data API connectors for European company registries (UK, France, Norway, Czechia) — alternative to fragile HTML scraping”
- Detects a company's VAT number on its website and pulls revenue, employee count and contact details in one click.“I built a Chrome extension to see a company’s revenue directly from its website”
- BuyAligned — Lets users look up and analyze companies' federal political giving from FEC filings without reading the raw records.“I built a site for looking up where companies' political money actually goes”
Most discussed
- Renders companies as buildings on a 3D island, with building height scaled to market cap.“I vibe coded a 3D island where every building is a company”
- StockManTools — Provides historical valuation charts, side-by-side stock comparison, and a simplified 10-year bull/base/bear DCF projection for equities.“I built a free stock analysis tool after getting frustrated with Bloomberg's price tag — would love feedback from actual investors”
- Automates corporate research and maps complex company ownership structures for professional firms.“Launched my first B2B SaaS at £99/seat/month. LinkedIn outreach isn't working. How would you build a GTM strategy?”
- Grade My Investments — Grades stocks using fundamentals data and an AI analyst layer, and answers AI questions about them on a pay-per-use basis.“18 months solo-building a fintech SaaS, bet on pay-per-use instead of subscriptions. Sanity check?”
- Open Terminal — Provides a web-based tool for analyzing SEC filing data, stock prices, analyst ratings, and news for US public companies, with charting and SQL querying.“Beta Testers Needed: I created an open source financial research tool”
- Mapa Societario — Visualizes Spanish company ownership and officer networks from daily BORME gazette data as an expandable graph.“I built a Spanish companies network explorer”
- FinBridge — Serves Korean and US stock filings, prices, screeners and ownership data to AI agents through a remote MCP server.“FinBridge - one MCP endpoint that gives AI agents every Korean + US stock listing (filings, screeners, 13F)”
- Marsad — Provides free stock research with supply-chain graphs from SEC filings, earnings verdicts, and strategy backtesting.“I built a free stock research tool — supply-chain maps from SEC filings, earnings analysis, and backtesting”
- bizlist.gr — Searches Greek company directory records and presents contact details, activity codes, management, history and balance sheets in one place.“Bootstrapped a Greek company intelligence tool. 40 paying users in 3 months. Looking for UI/UX feedback.”
- StockPlus — Tracks congressional activity and stock filings.“I posted my app to Reddit 100 times in four months. 30 were removed, the rest earned 207 karma total.”