Quantitative infrastructure for trading card markets.
Card Trader LLC applies data science, software engineering, and quantitative methods to the trading card ecosystem — building tools and analytics that bring financial-grade rigor to collectible markets.
Bring quantitative rigor to the trading card economy.
Trading card markets move billions annually, yet the infrastructure behind them remains fragmented and opaque. Price data is scattered across forums and spreadsheets. Portfolio tracking is manual. Liquidity is hard to measure.
Card Trader LLC is building the software layer that card investors and traders deserve — purpose-built analytics, data pipelines, and decision tools designed from the ground up for this unique asset class.
Research areas and active development
We're early-stage and building in the open. Here's where our work is focused.
Price Discovery & Market Data
Aggregating, cleaning, and structuring pricing data across marketplaces. Building normalized indices that track card values over time with statistical confidence.
Portfolio Tracking & Valuation
Tools to catalog holdings, assign real-time market valuations, and model portfolio performance — treating card collections like investment portfolios.
Market Structure & Liquidity
Analyzing bid-ask spreads, time-on-market, and transaction volume to understand liquidity across card grades, sets, and platforms.
Data Infrastructure & APIs
Designing pipelines, storage, and programmatic interfaces that make trading card market data accessible to builders, analysts, and quantitative researchers.
Founded at the intersection of finance and collectibles.
Card Trader LLC was formed in Oregon by a founder with a background in applied mathematics, quantitative finance, and software engineering. The company sits at the convergence of two passions: building data-driven systems and navigating the trading card economy.
We believe that the tools and frameworks used in traditional financial markets — indices, portfolio analytics, market microstructure analysis — can unlock serious value when applied to collectible card markets. Our approach is technical-first: writing code, building infrastructure, and letting the data lead.
Interested in building with us?
We're looking for engineers, quants, and card market enthusiasts who want to help build the data layer for trading card markets. Reach out.