# 2026-15928: OCC Spruces Up Options Pricing With Implied Interest Rates

2026-15928, Self-Regulatory Organizations; The Options Clearing Corporation; Order Approving Proposed Rule Change by The Options Clearing Corporation To Amend Its System for Theoretical Analysis and Numerical Simulation Methodology Description To Incorporate Options Implied Interest Rates as an Additional Source of Interest Rates Inputs for Constructing the Interest Rate Discount Curve Used in Options Pricing, is a Federal Register notice from Securities and Exchange Commission published 2026-08-06; PRIA reads it as touching household money (as of 2026-08-13).

- Canonical: https://policyrisk.com/federal-register/2026-15928
- As of: 2026-08-13
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-15928
- Title: Self-Regulatory Organizations; The Options Clearing Corporation; Order Approving Proposed Rule Change by The Options Clearing Corporation To Amend Its System for Theoretical Analysis and Numerical Simulation Methodology Description To Incorporate Options Implied Interest Rates as an Additional Source of Interest Rates Inputs for Constructing the Interest Rate Discount Curve Used in Options Pricing
- Type: Notice
- Agencies: Securities and Exchange Commission
- Citation: 91 FR 50908
- Published: 2026-08-06
- Effective: unknown
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-08-13

## In one line

OCC Spruces Up Options Pricing With Implied Interest Rates

## Summary

The Options Clearing Corporation (OCC) is updating how it calculates interest rates for pricing options by adding a new way to estimate rates using options themselves. This change helps OCC better manage risks and keep the market safe for everyone trading options. The update starts soon and won’t cost traders extra but aims to make pricing smarter and more accurate.

## Effects PRIA read

- Options-Implied Rates Added to Pricing: benefit, medium. OCC will add interest rates implied by SPX options (called box rates) as an extra input when building the interest-rate discount curve used to price options. OCC will derive box rates from SPX European-style option mid-prices using a proprietary regression, notes that box rates generally run about…
- Aggregate Margin Collection Modestly Lower: benefit, medium. OCC's analysis shows the proposal would produce a modest reduction in total margin collected; a single-day example for a typical business date in November 2025 showed about a $141 million reduction, or roughly 0.27% in relative terms. Individual portfolios will vary, and portfolios concentrated in…
- Better Alignment Reduces Default Risk Spillover: benefit, medium. By aligning the discount curve with market-implied rates, OCC says it can more accurately assess credit exposures and set margin that better matches product risk, which increases the likelihood OCC can manage a Clearing Member default without using Clearing Fund assets of non-defaulting members. Th…

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## Sources
- [2026-15928 on federalregister.gov](https://www.federalregister.gov/documents/2026/08/06/2026-15928/self-regulatory-organizations-the-options-clearing-corporation-order-approving-proposed-rule-change)
- [2026-15928 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-08-06/pdf/2026-15928.pdf)

## Related
- [Previous: 2026-15927, Self-Regulatory Organizations; NYSE Arca, Inc.; Notice of Filing and Immediate…](https://policyrisk.com/federal-register/2026-15927)
- [Next: 2026-15930, National Industrial Security Program Policy Advisory Committee (NISPPAC); Meeti…](https://policyrisk.com/federal-register/2026-15930)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-15928 (as of 2026-08-13).