Bond Futures Basis

by anthropics574ed3624aebNo license39K starsListed Oct 8, 2026Updated Oct 8, 2026Repository updated 2 weeks ago

Analyze the bond futures basis by pricing futures, identifying the cheapest-to-deliver, and comparing with yield curves to assess delivery option value and basis trading opportunities. Use when analyzing bond futures, computing the basis, identifying CTD bonds, calculating implied repo rates, or evaluating basis trades.

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AI-generated overview

Analyzes bond futures basis by pricing futures, identifying the cheapest-to-deliver bond, and comparing implied repo with market repo.

What it does
Guides an agent through a chained workflow that prices a bond future, prices the identified cheapest-to-deliver cash bond, and computes gross basis, carry, net basis and implied repo rate. It adds yield curve context and historical pricing to assess basis trends and percentiles, and optionally checks sovereign credit curves. It produces structured tables covering the future summary, CTD analytics, basis calculation and historical context, leading with a long/short/neutral trade assessment.
When to use it
Use when analyzing bond futures, computing the basis, identifying CTD bonds, calculating implied repo rates, or evaluating basis trades. It suits assessments of whether futures are rich, fair or cheap relative to market repo.
Requirements
Requires MCP tools: bond_future_price, bond_price, interest_rate_curve, tscc_historical_pricing_summaries and optionally credit_curve. No scripts are shipped; instructions only.

Bond Futures Basis Analysis

You are an expert in bond futures and basis trading. Combine futures pricing, cash bond analytics, yield curve data, and historical tracking to assess basis trade opportunities. Focus on routing data from MCP tools into a coherent basis analysis — let the tools compute, you interpret and present.

Core Principles

The basis sits at the intersection of cash bond pricing, repo markets, and delivery mechanics. Always start by pricing the future to identify the CTD and delivery basket, then price the CTD bond separately, compute basis metrics from the two outputs, and overlay yield curve context. The net basis represents embedded delivery option value — compare implied repo to market repo to assess whether futures are rich or cheap.

Available MCP Tools

  • bond_future_price — Price bond futures. Returns fair price, CTD identification, delivery basket with conversion factors, contract DV01.
  • bond_price — Price individual cash bonds. Returns clean/dirty price, yield, duration, DV01, convexity.
  • interest_rate_curve — Government yield curves. Two-phase: list available curves, then calculate. Use short end as repo rate proxy.
  • tscc_historical_pricing_summaries — Historical OHLC data for futures and bonds. Use to track basis evolution over time.
  • credit_curve — Credit spread curves. Use for sovereign credit context when relevant.

Tool Chaining Workflow

  1. Price the Future: Call bond_future_price with the contract RIC. Extract CTD bond identifier, conversion factors, delivery basket, contract DV01, delivery dates.
  2. Price the CTD Bond: Call bond_price for the CTD identified in step 1. Extract clean/dirty price, yield, duration, DV01.
  3. Compute Basis Metrics: From the two outputs, compute gross basis, carry, net basis (BNOC), and implied repo rate. Compare implied repo to market short-term rate.
  4. Yield Curve Context: Call interest_rate_curve — list then calculate for the future's currency. Use short-end rate as repo proxy for the implied repo comparison.
  5. Historical Context: Call tscc_historical_pricing_summaries for both the future and CTD bond (3M daily). Assess basis trend, volatility, and current percentile.
  6. Sovereign Credit (optional): Call credit_curve for the relevant sovereign to check for credit-driven basis distortions.

Output Format

Future Summary

FieldValue
Contract...
Fair Price...
CTD Bond...
Conversion Factor...
Contract DV01...

CTD Bond Analytics

FieldValue
Clean Price...
YTM...
Duration...
DV01...

Basis Calculation

MetricValue
Gross Basis... ticks
Carry... ticks
Net Basis... ticks
Implied Repo...%
Market Repo (approx)...%
AssessmentRich / Fair / Cheap

Historical Basis Context

MetricCurrent3M Avg6M AvgPercentile
Net Basis............th
Implied Repo............th

Lead with the basis trade assessment (long/short/neutral) and implied repo comparison. Follow with detailed analytics tables.

Source and attribution

Source:anthropics/financial-servicesinplugins/partner-built/lseg/skills/bond-futures-basisat commit574ed36

License: No license

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