Terms · Licensing

Terms and licensing

The site, the indexes, and the research are published by Tantalum Strategy, an independent research desk founded by Priscilla Avila. The terms below govern how the material may be used.

Editorial content

Research articles, briefs, the index methodology page, and all other written material on tantalum.info are protected by copyright. Reproduction in full requires written permission. Short quotations with attribution and a link to the source page are welcome under normal fair-use and journalistic-citation conventions.

Indexes, constituents, and historical data

The Tantalum Strategy indexes, TAI (with TAI-M and TAI-P sub-indices), SOV50, SDX and TCC, are editorial work product of the desk. The following are protected as a compilation under 17 U.S.C. §103 (United States Compilation Copyright) and Directive 96/9/EC (European Union Database Directive):

The selection of constituent materials in each index
The exact weights assigned to each constituent
The proxies used to track materials without transparent spot markets
The historical time series of published index values
The aggregated concentration scores (HHI) and per-material breakdowns

Constituents, instruments, weights and the thesis behind each index are published openly on the methodology page so readers can evaluate and reproduce what we do. Publishing them does not place them in the public domain: the selection, the weighting and the historical series remain protected as a compilation.

Permitted use

You may, without prior permission:

View the indexes on tantalum.info for personal information and research
Cite published index values in editorial, journalistic, or academic work with attribution and a link to tantalum.info
Reference the methodology page in academic or industry analysis
Embed short index quotations (one or two values, a few constituents) in your own writing

Prohibited without a license

You may not, without a written license from Tantalum Strategy:

Republish the index values as a feed, API, or downloadable dataset
Use the indexes as a settlement reference for any financial product, derivative, ETF, or fund
Create or distribute a competing index that materially replicates Tantalum's constituent selection or weighting
Resell or sublicense access to the indexes to third parties
Scrape historicals at scale

Institutions, asset managers, ETF sponsors, and research firms wanting commercial use should contact the desk for licensing terms.

Provenance and watermarking

Each published index value contains a deterministic editorial micro-adjustment for provenance verification. Values reproduced without authorization can be traced back to their publication date and source. This is documented on the methodology page.

No investment advice

Nothing on this site is investment advice, an offer to sell securities, or a solicitation to buy. The indexes are thematic research products, not benchmarks suitable for use as a settlement reference for derivatives or funds without explicit licensing. Readers make their own decisions and bear their own risk.

Disclaimer

Tantalum Strategy uses publicly available data where possible and editorial judgment where data is thin. Values are published in good faith but without warranty as to accuracy, completeness, or fitness for any particular purpose. Errors are corrected when identified; the methodology changelog records material changes.

Contact

For licensing inquiries, press, or corrections: tantalum.info/contact.