The Intrade archive: the record and its files
Archive collected and kept by Panos Ipeirotis
NYU Stern School of Business · prices and trades from Intrade, Dublin, 2002 to 2013
Intrade's contract list, daily summaries and trade files as Panos Ipeirotis collected them in 2013 and deposited them on Zenodo in 2026: his six files, a checksum for each, the provenance and the rights as he states them.
- The record
- Intrade's list of 17,295 contracts under 22 category labels, with a daily summary file and a trade file per contract, observed from 7 November 2002 to 10 March 2013. It comes as two archives: the original files of 2013 and the research tables built from them.
- Made by
- Traders on Intrade, the prediction exchange run from Dublin, which stopped trading in March 2013.
- Kept by
- Panos Ipeirotis, New York University Stern School of Business. He collected the files and put them on GitHub on 2 April 2013, and in October 2026 rebuilt the archive with checksums, research tables, documentation and a rights statement.
- Deposited
- By Panos Ipeirotis on Zenodo on 28 October 2026, under his own name, with DOI 10.5281/zenodo.23740923. This record lists the files of his deposit. It is not a second deposit.
- Received
- Downloaded from his deposit on 4 November 2026. The MD5 of every file matched the deposit, and the SHA-256 of the two archives, the quality report and the original checksums matched his own sums file.
- Copies
- The original files and the four documentation files are also served from this page. The research tables, 46.7 MB, are served from his deposit.
- Covers
- Contracts observed from November 2002 to March 2013. The record holds no settlement outcomes and no contract rules.
- Files
- 6 files, 80.2 MB in all, each with a SHA-256 and an MD5 checksum.
Start here
The files a reader opens first. Each download is the file as received; the checksum beside it is in the sums file below.
- The original files of 2013intrade-original-snapshot.zip33.5 MBDownload from the keeper's deposit
- Research tables, CSV and Parquetintrade-research-v1.0.1.zip46.7 MBDownload from the keeper's deposit
- Quality reportquality_report.json1 KBDownload
- The keeper's rights statementRIGHTS.md1 KBDownload
Every file
6 files · 80.2 MB
The two archives
The original files as collected in 2013: the contract spreadsheet, two zip archives of daily summaries and trades, the historical notes, Intrade's XML API reference and a Java-serialized datastore snapshot. Then the research tables built from them, in CSV and Parquet, with their documentation. Zip archives.
| File | Size | Format | Covers | SHA-256 | Download |
|---|---|---|---|---|---|
| intrade-original-snapshot.zipThe six original files as collected in 2013: the contract spreadsheet, the zip archives of daily summaries and trades and of supplemental closing prices, the historical notes, Intrade's XML API reference and the Java-serialized datastore snapshot. | 33.5 MB | Zip archive | 0971809b…0b45 | From the deposit | |
| intrade-research-v1.0.1.zipResearch tables built from the original files: contracts, daily observations and trades in CSV and Parquet, the source-file catalogue, quality report, data dictionary, coverage and preservation notes, citations and checksums. Served from the keeper's deposit. | 46.7 MB | Zip archive | f99492a6…1c27 | From the deposit |
Rights, quality and checksum files
The keeper's rights statement, his quality report, and the checksums of the original files and of the research release, as deposited.
| File | Size | Format | Covers | SHA-256 | Download |
|---|---|---|---|---|---|
| ORIGINAL_SHA256SUMSThe keeper's SHA-256 sums of the six original files inside the original archive. | 600 B | Text | 8ad6c60f…98a0 | Download | |
| RIGHTS.mdThe keeper's rights and attribution statement. | 1 KB | Markdown | ce405239…2181 | Download | |
| SHA256SUMSThe keeper's SHA-256 sums of the research release files. | 785 B | Text | 55373573…350c | Download | |
| quality_report.jsonThe keeper's quality report: counts, observed dates, categories and flags. | 1 KB | JSON | 434cea04…e617 | Download |
Documentation
The research archive carries a data dictionary, a coverage report, a quality report and a preservation note, and the keeper's repository holds the same documents. The datastore snapshot in the original archive is kept as received; the keeper's tools inspect it, and the research tables are built from the spreadsheet and the zip archives, not from it.
Integrity
Every file is published byte for byte as received. The sums files list a checksum for each; after downloading the files into one folder, one line checks them all:
sha256sum -c SHA256SUMS
Provenance
- 2002 to 2013Contracts trade on Intrade. The record's observations run from 7 November 2002 to 10 March 2013.
- 2 April 2013Panos Ipeirotis adds the collected files to his GitHub repository.
- 28 October 2026He publishes the rebuilt archive, with research tables, checksums, documentation and a rights statement, and deposits it on Zenodo with a DOI.
- 28 October 2026He gives Vultax Research written permission to "use the data and repository as you wish", which covers re-hosting the files.
- 4 November 2026The six deposited files are downloaded and checked: every MD5 matches the deposit and every listed SHA-256 matches his sums file.
- 13 November 2026The reading edition and this record are published.
Rights and reuse
Panos Ipeirotis, who kept these files, gave Vultax Research written permission on 28 October 2026 to use and re-host the data and the repository, to "use the data and repository as you wish" in his words. The copies on this page are hosted under that permission. His rights statement leaves the reuse terms of the historical Intrade files unspecified for everyone else, and Intrade, which made them, no longer trades; his MIT licence covers his own code. Please name Intrade as the source of the prices and trades, cite his deposit as below and cite the two papers his README names.
What holds for every record, from access and reuse to how a rights claim is handled: Access and terms.
Cite this record
Panos Ipeirotis, Intrade Historical Archive, dataset, Zenodo, 28 October 2026, DOI 10.5281/zenodo.23740923. Prices and trades from Intrade, 2002 to 2013. Please also cite Nikolay Archak and Panagiotis G. Ipeirotis, Modeling Volatility in Prediction Markets, Proceedings of the 10th ACM Conference on Electronic Commerce, 2009, and Modeling Dependency in Prediction Markets, CeDER working paper CeDER-10-05, 2010. Files listed at https://vultax.com/archive/intrade.
Corrections
Published 13 November 2026. If a file, checksum or statement on this page ever changes, the change is dated in the change log; the files themselves are never altered. Corrections and questions: research@vultax.com.