The Short Insider is a short-position data API service for financial markets. It aggregates regulatory disclosure data from 32 countries and jurisdictions, then audits, deduplicates, and standardizes it. Its core value is turning short-selling disclosures that are otherwise scattered across different regulators, formats, and publication schedules into a unified, searchable data source with real-time delivery.
From a developer tooling perspective, it provides a standard REST API with Bearer Token authentication, pagination, and multi-dimensional filtering. Queries can be made by fund, security, country, date range, audit status, and more. Real-time delivery is handled via Webhooks: when new positions are collected, batch events are triggered and signed with HMAC-SHA256 for authenticity verification. Data fields include ISIN, LEI, and local ticker; for some North American and UK securities, CUSIP and SEDOL are also provided, which helps with integration into security master data and trading systems. Historical data goes back to 2010, making it suitable for backtesting, trend analysis, and research.
The official website does not disclose specific pricing and instead uses a contact-sales or inquiry-form model. Before procurement, buyers should confirm costs, licensing scope, API call limits, SLA, the definition of data latency, and redistribution terms. The page mentions a complete OpenAPI spec and shows a /v1/short_positions example, suggesting that the API design is relatively clear. However, the available materials do not include details on SDKs, sample code, error codes, rate limits, or versioning policy.
Its strengths are its very focused positioning: it addresses the fragmentation of global short disclosure data and provides auditing, standardization, historical archives, and real-time push delivery, which can significantly reduce the data engineering burden for financial institutions. The downside is that public information is limited: there is no pricing, payment method, support information, full list of covered countries, or clarification on whether self-hosting or private deployment is available.
It is best suited for quantitative trading teams, hedge fund research, compliance and risk departments, and market data vendors. It is less suitable for general developers or non-financial use cases. Access from mainland China cannot be determined from the page and should be marked as unknown; payment and contract arrangements typically also need to be confirmed separately. Comparable alternatives include market data platforms such as Bloomberg, Refinitiv, FactSet, S&P Global Market Intelligence, and Nasdaq Data Link.
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shortinsider.com is an Unknown Dev Tools provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach shortinsider.com directly.