Best corporate actions data provider—SIX

Product overview—Global Corporate Actions

SIX is a Zurich-based provider of financial data solutions. It provides its capital markets clients with market and reference data, corporate actions, and sanctions and regulatory data. SIX has a special focus on innovation and its various interfaces allow market participants to access data consistently and seamlessly. The firm’s data products help clients make the most consistent and informed business and investment decisions, while its commitment to innovation—especially in areas such as indexes and environmental, social and governance—help address the evolving needs of the industry.

Secret sauce

SIX has been serving the capital markets with high-quality data for nearly 100 years. In this time, it has extended its databases, expanded its asset class coverage, and developed tools and data to serve the needs of its clients worldwide, although it has always maintained a local flavor within its products and its approach toward its customers. This proximity and use-case-driven service life cycle is what SIX believes sets it apart from similar data and information providers within the industry.

Recent milestones

• In 2024, SIX developed new ways for clients to access its corporate actions, particularly through application programming interfaces (APIs). Its new SIX Bulk API allows extensive uploads of corporate actions into any security master and banking system in minimal time frames. This data is kept up to date through delta uploads processed automatically, significantly reducing technical and human effort
• In March 2024, SIX acquired FactEntry, a London‑based provider of global fixed-income reference data, bond pricing, analytics and data solutions, allowing SIX to extend its corporate actions data to a broader range of fixed‑income securities.

Future objectives

Crypto and digital assets now play a more important role in the investment industry than ever before and are gaining a greater share of portfolios, even for retail investors. SIX is developing data services around this specific asset class, including reference and pricing data, but also regulatory data. The firm’s Digital Asset Regulation & Tax Service, which went live in April 2025, is a bulk file of more than 150,000 crypto-related instruments, which provides the exact status of each instrument, from crypto currencies to regular bonds traded on a blockchain. The firm’s approach is increasingly use-case-oriented, meaning it develops solutions in response to clients’ specific needs. For example, SIX recently launched a credit risk mitigation tool that allows funds to qualify as collateral.

Why SIX won

SIX, the Zurich-based data specialist, maintains its phenomenal run in the annual Inside Market Data & Inside Reference Data awards by winning this category yet again, thanks to its impressive Global Corporate Actions offering. Key to its continued success are its new SIX Bulk API, allowing extensive uploads of corporate actions data into any security master and banking system; its acquisition of FactEntry, allowing it to extend its corporate actions data for a broader range of fixed-income securities; and its Digital Asset Regulation & Tax Service, a digital assets file delivered daily as a flat CSV file containing a list of some 80,000 (and growing) instruments, each with their own identifiers, which went live in April 2025. Given the firm’s track record in the category over the past decade, only a brave (or foolish) person would bet against SIX making the winners’ circle again this time next year.