historicaldata.net - License ============================ Last updated: 2026-09-14 This license sets out how you may use data delivered under a particular purchase or subscription. It takes effect when you first download data under that purchase or subscription. The license text is also published at https://historicaldata.net/terms.html#license Delivery, access periods and refunds are governed by the separate terms of sale at https://historicaldata.net/terms.html#refund. Changes to those terms apply to future purchases and do not retroactively change an existing purchase or the rights granted under its license. 1. License scope ---------------- Choose a license at checkout according to the number of people who will have access to the data: Single user - one designated person. Team - up to 10 people. Organization - any number of people within one legal entity. A person counts as a user if they can access the data files or a database loaded from them. Someone who only reads reports or views charts or other permitted results does not count as a user of the underlying data. The license covers the person or legal entity for whom the purchase is made. Employees, consultants and collaborators who can access the data count toward the selected license's user limit, except for temporary auditors meeting all the conditions below. Working on the same project does not otherwise extend a Single user license to other people. For an organizational purchase, covered users are its employees and consultants engaged to work on its behalf, within the selected user limit. Parent companies, subsidiaries and other group entities need their own licenses. An Organization license removes the user limit within one legal entity; it does not cover an entire corporate group. Free samples may be downloaded and evaluated without purchasing a license, subject to the redistribution restrictions in section 3. Limited independent audit access. You may allow up to two named independent auditors per audit project to access the necessary data for no more than 30 consecutive days from first access, without our prior approval or an additional fee. These temporary auditors do not count toward your license's user limit if all the following conditions are met: * Access is solely to independently verify your research, analysis or backtest using the licensed data. Auditors must not use the data for their own research, trading, other client projects or participation in your ordinary research work. * Access and verification programs remain within an environment you control, with raw data made available on a read-only basis and limited to what the audit requires. Auditors must not export or retain raw-data copies outside that environment. Do not share our download links or access credentials with them. * Before access, each auditor accepts written obligations to you covering confidentiality of the raw data, the limited purpose and prohibition on redistribution. An existing agreement covering these obligations is sufficient; you do not need to submit it to us. * You keep a record of the named auditors, the audit purpose, the data scope, access dates and the written obligations. Revoke access when the audit ends or the 30-day period expires, whichever comes first, and remove temporary raw-data copies created for the audit. This does not require deletion of your licensed source data. * Auditors may retain working records and conclusions that do not contain or allow reconstruction of a substantial part of the raw data. We do not review or approve audit conclusions. Confidentiality of the raw data does not prevent auditors from reporting findings or data-quality issues, subject to the redistribution restrictions in section 3. Access outside these conditions must fall within the ordinary license scope or be separately agreed with us in writing. This audit permission does not restrict access already permitted under your ordinary license. 2. Permitted uses ----------------- Within the scope of your license, you may: * Use the data for commercial or non-commercial work, including trading, research, analysis, consulting, teaching, and developing products and services. * Store and process it on local machines, internal databases, notebooks and cloud services you control, with access limited to covered users. * Create models, signals, indicators, backtests, reports, dashboards and research papers. * Publish permitted results, including statistics, charts, model outputs, backtest performance, trade lists and equity curves, subject to sections 3 and 5. These results may appear in commercial products and on commercial sites. * Train machine-learning models as described in section 4. * Keep and continue using data already delivered under this license after an included update period or subscription ends, subject to section 8. A later price change, product withdrawal or subscription cancellation does not end your right to use data already delivered under this license. An update period or subscription determines which new files you receive, not how long you may use files already delivered. Download access and replacement links remain governed by the terms of sale. 3. Redistribution restrictions ------------------------------ You may not sell, publish, share, sublicense or otherwise redistribute data files, in whole or in part, to anyone outside your license scope. You may not release derived outputs from which a substantial part of the data can be reconstructed in usable form. A substantial part is assessed by the usable data a recipient can recover, rather than by a fixed row count or percentage of the archive. A chart of a strategy's returns is a permitted result. A published table of daily closing prices for a thousand tickers redistributes usable market data, even if it represents a small fraction of the archive. You may show limited example rows to explain research or an issue in a paper, post, support request or bug report. Examples must not be accumulated or organized into a collection that substitutes for the underlying data. Download links and access credentials may only be shared with users covered by your license. 4. Machine learning ------------------- You may train machine-learning models on the data, including models used commercially. If you publish a model or offer it as a service, users must not be able to recover a substantial part of the underlying data through it. Predictions, scores and classifications are permitted outputs, provided they comply with section 3. A model that reproduces historical quotes on request is subject to the same redistribution restrictions as other ways of supplying the data. 5. Attribution -------------- Published research using the data, such as papers, preprints and public research reports, must credit HistoricalData.net as the source, with a link where the format allows. Internal work, commercial products, client deliverables and trading do not otherwise require attribution. 6. Data quality and limitations ------------------------------- The methodology page at https://historicaldata.net/methodology.html describes how the data is prepared, and known data limits at https://historicaldata.net/methodology.html#limits describe coverage gaps and interpretation issues. We may correct or update files and publish newly identified limits. To the extent permitted by applicable law, the data is provided without warranties of accuracy, completeness or fitness for a particular purpose. This does not remove the delivery and refund commitments in the terms of sale. 7. Liability ------------ To the extent permitted by applicable law, we exclude liability for indirect, incidental or consequential loss arising from use of the data or inability to use it, including lost profits. Where liability remains, our total liability to you is limited to the amount you paid us. Nothing in this license excludes or limits liability that cannot lawfully be excluded or limited, or removes our express delivery and refund obligations under the terms of sale. 8. Termination -------------- Access to the data remains subject to the user limits in section 1. If you redistribute data in breach of section 3, this license terminates and you must stop using data covered by it. Ending a subscription or an included update period does not itself terminate the license. Uses expressly agreed with us in writing remain subject to that written agreement. If you are unsure whether a proposed use is permitted, contact info@historicaldata.net. 9. Governing law ---------------- This license is governed by the laws of Hong Kong. It does not require you to bring a claim in any particular court. 10. License versions -------------------- Changes to this license apply to future purchases and do not retroactively change an existing purchase. The version published on the date of your purchase governs the data delivered under that purchase. A later revision does not change your rights in data already delivered under an earlier version. As an optional additional permission, the limited independent audit access described in section 1 is also available for data covered by an existing valid purchase under an earlier license. Only access relying on this additional permission is subject to its audit conditions; the earlier license otherwise remains unchanged. You may keep the license supplied with your files and contact us for the version applicable to your purchase. Questions: info@historicaldata.net