CSV exports, facts JSON, and research datasets.
Download a deal CSV, inspect its facts JSON, or find a research benchmark. No signup is needed for the public files. A descriptor explains a dataset's shape; it is not a download of observations.
Check the reporting date in each facts file. The export manifest reports the build date, counts, license, and column definitions; a new site build does not mean a new reporting period. Find generated files through the dataset sitemap.
Download deal identifiers and pool metrics as CSV, or open the JSON for source documents and reporting dates.
Download deal CSVAsk Cairn: “Find the CMBS material changes in the latest available comparison. Return the dataset, comparison periods, and source filings.”
Get the dataset with CairnStart with the canonical deal index. Select an exact key and match its id in the CMBS and Auto ABS feed. The index includes verified page and facts URLs; records without a verified mapping remain in the feed. The CMBS-only JSON register also powers the material-change page.
Both feeds use schemaVersion 1. Each record retains its status and runId. Compared records carry ruleSet and filings.old/new with source URLs, accessions, filing dates, and reporting periods. A new_issue has filings.old=null and no prior comparison. These are the latest published records, not a single market-wide observation date. generatedAt and publishedAt describe publication, not the age of every filing.
CMBS findings contain assetNumber, rules, ruleFields, and fields with old/new values. Auto ABS provides pool totals and rules with assets, balance, and balanceBasis; it does not publish individual asset findings. Rules overlap, so do not add their counts or balances as unique totals. Preserve balanceBasis and distinguish null from zero.
A compared CMBS record with empty findings has no triggered rules for that comparison. An absent record, unpaired filing, or missing canonical mapping does not mean zero changes. For current coverage, read the index and each feed rather than assuming every catalog deal was compared.
A compared Auto ABS record has zero flags only when all rules[].assets values are zero; the absence of a findings field does not establish that.
SEC-derived benchmarks for machine learning on CMBS loan performance. Research copy links open hosted data; descriptor links document dataset fields and formats, but may have no data available to download. Review the license on each card. For commercial licensing, email cairn+llms@cmdrvl.com; for a dataset request, text Cairn.
Leakage-safe flat benchmark: predict which CMBS loans transfer to special servicing within 12 months, using only point-in-time SEC-disclosed features. For TabPFN, AutoML, XGBoost, and credit-risk work.
Per-loan event-sequence shape for transfer timing models and temporal credit-risk research. Data file in preparation; descriptor and ODPS metadata are public.
LLM-native DuckDB research pack for local analytics, citation-ready retrieval, and transfer-risk experiments. Data file in preparation; descriptor and ODPS metadata are public.
| Dataset | Description | Format | Date to check | Status |
|---|---|---|---|---|
| CMBS Deals | Deal identity and pool metrics. Use facts JSON for source documents and receipt coverage. | CSV / facts JSON | last_updated / asof | Download example |
| ABS Auto Deals | Auto ABS files include deal identity fields until ABS metric exports are available. CSV does not contain the performance charts' full history. | CSV / facts JSON | last_updated / asof | Choose a deal |
| Fund Holdings with CMBS Exposure | Fund facts and mapped holdings from NPORT-P filings. Coverage is specific to the fund and reporting period. | Facts JSON | Filing / reporting period | Choose a fund |
| BDCs | Per-BDC CSV exports and facts JSON. Inspect populated fields before using the shared CSV schema. | CSV / facts JSON | last_updated / filing date | Download ARCC CSV |
| Watchlist transitions | Schema contract only. No observation rows are currently exported. | JSON descriptor | coverage and rows | Inspect empty contract |
Before using a file, check for null fields, confirm the reporting period, and review which values have source receipts.
Data originates from public sources (e.g., EDGAR) and curated references. Collection-level provenance does not imply every CSV row is receipt-covered.
Static CSV exports are generated at build time for deal and BDC records.
Facts JSON contains structured records for deals, BDCs, funds, and CLOs.
/datasets/_meta.json documents source, license, URL patterns, counts, and CSV columns.
/datasets/{deal-key}.csv and /datasets/bdc-{ticker}.csv./llm/facts/{deal-key}.json, /llm/facts/bdc-{ticker}.json, and /llm/facts/fund/{fund-key}.json.Download individual deal files in the formats that exist today:
Deal CSV: /datasets/{deal-key}.csv - generated per-deal CSV. CMBS files include pool metrics; Auto ABS files include deal identity fields until ABS metric exports are available.
BDC CSV: /datasets/bdc-{ticker}.csv - generated per-BDC CSV from public filings.
Facts JSON: /llm/facts/{deal-key}.json - machine-readable facts for LLMs, APIs, and citation workflows.
Export manifest: /datasets/_meta.json - source, license, counts, URL patterns, and CSV column dictionaries.
CMBS watchlist transition contract: /datasets/cmbs-watchlist-transitions.json - schema-ready JSON contract for newly watchlisted and removed-from-watchlist loan rows. Current row count is zero until upstream watchlist flags are exported.
Attribution required: "Source: Dealcharts.org" with link to page.
Datasets may not include personal or confidential information.
Learn more in Disclosures and Privacy.
Public paths are documented at /api/. For a custom dataset, text Cairn with the CUSIPs, funds, asset class, periods, and fields you need. For licensing questions, email cairn+llms@cmdrvl.com.