Changelog

Latest updates and improvements to Whale Tracker.

March 23, 2026

Smart Alert Digest & Performance Engine

•Multi-investor email digest with watchlist callouts and per-investor narratives
•Dynamic subject lines that highlight the most newsworthy change
•One-click CAN-SPAM compliant unsubscribe
•Alert preview — see what your next email digest looks like from the dashboard
•5 pricing methods for estimated performance (report date, filing date, quarter low/high/avg)
•Live 'Since Filing' projected return using daily stock prices
•Fixed 1000× value inflation bug in SEC data parsing
•Fixed MSFT price truncation (1000-row cap)
•Fixed call/put options being aggregated with equity holdings
•Added 12 foreign CUSIP ticker mappings (CB, AON, ALLE, DB, ASML, FER, etc.)
•Normalized ticker format: equity class suffixes now use dot (HEI.A, LEN.B)

March 23, 2026

March 19, 2026

•30 superinvestors tracked across 20 quarters of SEC 13F data
•Investor detail pages with full holdings table and quarter-over-quarter changes
•Activity feed showing buys, sells, new positions, and exits across all investors
•Stocks page showing which securities are held by multiple superinvestors
•Stock detail with TradingView chart and whale timeline
•Portfolio builder for custom blended allocations
•User accounts with email/password and Google OAuth
•Investor follows and stock watchlist
•Configurable email alert preferences
•Daily automated ingestion from SEC EDGAR
•Light/dark theme toggle
•Mobile-responsive design

Smart Alert Digest & Performance Engine

•Multi-investor email digest with watchlist callouts and per-investor narratives

•Dynamic subject lines that highlight the most newsworthy change

•One-click CAN-SPAM compliant unsubscribe

•Alert preview — see what your next email digest looks like from the dashboard

•5 pricing methods for estimated performance (report date, filing date, quarter low/high/avg)

•Live 'Since Filing' projected return using daily stock prices

•Fixed 1000× value inflation bug in SEC data parsing

•Fixed MSFT price truncation (1000-row cap)

•Fixed call/put options being aggregated with equity holdings

•Added 12 foreign CUSIP ticker mappings (CB, AON, ALLE, DB, ASML, FER, etc.)

•Normalized ticker format: equity class suffixes now use dot (HEI.A, LEN.B)

Production Hardening

•Favicon, apple-touch-icon, and dynamic OG images for social sharing

•Per-investor OG cards showing name, fund, portfolio value, and style

•Dynamic sitemap with all investor and stock pages

•Security headers: HSTS, X-Frame-Options, CSP, Referrer-Policy

•Rate limiting on public API routes (60 req/min per IP)

•Health check endpoint at /api/health with staleness detection

•PostHog analytics integration (privacy-friendly, conditional loading)

•Error boundaries on all routes

•Email verification banner for unconfirmed accounts

•PWA manifest for mobile home screen installation

Initial Launch

•30 superinvestors tracked across 20 quarters of SEC 13F data

•Investor detail pages with full holdings table and quarter-over-quarter changes

•Activity feed showing buys, sells, new positions, and exits across all investors

•Stocks page showing which securities are held by multiple superinvestors

•Stock detail with TradingView chart and whale timeline

•Portfolio builder for custom blended allocations

•User accounts with email/password and Google OAuth

•Investor follows and stock watchlist

•Configurable email alert preferences

•Daily automated ingestion from SEC EDGAR

•Light/dark theme toggle

•Mobile-responsive design