Governance
The Proshare 12 Index is administered under a transparent, rules-based methodology with formal oversight, scheduled review cycles and documented controls aligned to international benchmark principles.
Rules-based
Every constituent, weight and corporate-action treatment derives from a documented, published rule.
Independent oversight
Buy-side and sell-side practitioners challenge methodology and review consultation outcomes.
Scheduled review
Quarterly rebalance plus semi-annual methodology review with 60 days' public notice.
Milestones & reviews
- Jan 2024
Index Series launch
Proshare 12 Index launched with the Full Market-Cap, Float-Adjusted Price Return and Float-Adjusted Total Return variants. Base date set at 5 January 2015.
- Mar 2024
Inaugural quarterly rebalance
First scheduled rebalance under the published methodology. Constituent list and free-float factors published five business days in advance.
- Sep 2024
Methodology v1.1
Clarification of treatment for rights issues and partial free-float revisions. Effective from the September 2024 rebalance with 60 days' notice.
- Jan 2025
External oversight
Establishment of an independent Oversight Panel comprising buy-side and sell-side practitioners, reporting to the Index Committee semi-annually.
- Jan 2026
Benchmark alignment review
Annual self-assessment against leading principles for financial benchmarks. Findings published alongside the methodology document.
- Q2 2026
Sector cap consultation
Open consultation on adjusting the sector cap from 40% to 35% to improve diversification. Stakeholder responses being reviewed.
Structure & responsibilities
Proshare Research lead with final accountability for methodology, rebalancing decisions and index integrity.
Quantitative team responsible for daily calculation, divisor maintenance and the application of corporate action rules.
Rotating buy-side and sell-side members providing independent challenge on methodology, rebalance outcomes and consultation responses.
Independent function responsible for control attestations and adherence to leading principles for financial benchmarks.