About Persistfolio
Persistfolio builds specialized datasets for people who need to examine the evidence, not simply take a data provider's word for it.
What we publish
Our catalog includes historical financial and regulatory datasets assembled from public records and primary sources. Products are designed for researchers, analysts, developers, and other users who need structured records that would otherwise take significant work to collect, reconcile, and evaluate.
We publish defined releases with clear coverage periods, field documentation, and samples. Individual product pages describe exactly what a buyer receives, including important exclusions and limitations.
How we approach data quality
Collecting records is only the beginning. Source conflicts, missing values, changing identifiers, and ambiguous disclosures can materially affect a research result. We document how those issues are handled rather than silently turning uncertainty into false precision.
Our goal is to make data quality inspectable: source links and provenance where available, explicit transformation rules, release-specific quality documentation, and public samples so buyers can evaluate suitability before purchasing. The scope of these materials varies by dataset; each product's documentation is the authoritative description of its evidence and checks.
Research beyond datasets
Persistfolio began with systematic investment research and continues to publish rules-based model portfolios, prospective performance tracking, and free research tools. That work remains available as a separate part of the site. The datasets are independent products: purchasing data does not require subscribing to a model portfolio.
About the Founder — Alex Odas
Persistfolio was founded by Alex Odas, a scientist, researcher, and financial professional whose career spans academic physics, quantitative analysis, and investment management.
Alex holds a PhD in Physics and has authored more than 70 scientific papers published in peer-reviewed journals, including Nature. His research has focused primarily on low-temperature physics, quantum physics, and quantum computing.
Beyond academia, Alex has built a successful financial advisory practice, combining analytical thinking with hands-on experience in portfolio management and investment research.
He is also the founder of Align Folio (alignfolio.com), a financial advisory and portfolio management platform that he uses extensively every day to analyze and manage his clients' investment portfolios.
Persistfolio brings these two worlds together: the rigor of scientific research and the practical demands of financial analysis.
The mission is straightforward: to make complex financial and business data more accessible, reliable, and useful. Persistfolio develops structured datasets and research tools that help investors, analysts, researchers, and businesses spend less time gathering and organizing information and more time using it to make informed decisions.
Our standard
Evidence first. Methods visible. Limitations stated.
No dataset is perfect or suitable for every use. We aim to give buyers enough detail to decide what the records can — and cannot — support.