Product Manager / AI Builder / Long-term Investor
I’m Sirius, a product manager with over a decade of experience, an AI builder and a long-term investor. This is where I share my projects, writing and work.
Independent products I’ve shipped and open-source tools I maintain.
A native macOS app for stocks, funds, crypto, property and cash. Your data stays on your device.
Visit websiteTrack key valuation and cycle indicators for BTC and MSTR, including premiums and market context.
Open dashboardFollow volatility, indices and valuation percentiles to put the US stock market in context.
Open dashboardA mechanical typewriter in your browser, with keystrokes, carriage returns and sound. Type in English or Chinese, then print.
Open appIn-depth company and earnings research with reproducible DCF, EPV and EVA valuations.
View source 06TradeGitTrading journal skillRecord trades and your reasoning, import brokerage statements and review gains and losses using FIFO.
View source 07Claude × IBKR DashboardsPrompt / DashboardPrompts for four Chinese-language dashboards covering accounts, valuation, options and trading decisions.
View sourceNotes on products, AI, long-term investing and life along the way.
Essays and personal notes since 2013. Currently in Chinese.
Explore the writingThe archive is currently in Chinese. Browse the original articles
In-depth research and approaches to long-term investing. Written in Chinese.
Read on XiaobotPractical advice on SaaS products and AI, grounded in over a decade of product management.
Review your positioning, user needs, product experience and delivery challenges, with clear recommendations for improvement.
Work with you on product definition, roadmaps and prioritization to move your SaaS product forward.
Help individuals and teams choose suitable AI tools and put practical workflows into use.
I’m Sirius, a product manager, AI builder and long-term investor. For over a decade, I’ve worked on SaaS, cloud computing, observability and developer ecosystems.
I’m always open to conversations about products, AI and long-term investing.