Two futures. One dated SPAN 2 result.

1. Define the portfolio

Both positions are NYMEX WTI Crude Oil futures, clearing code CL. Positive quantities are long; negative quantities are short. Account treatment is HEDGE (H), with the default HOUSE origin. Reporting currency is USD.

2. Keep the calculation basis

The demo API accepted both exact contracts and returned a successful SPAN 2 calculation. Automatic nearest-contract matching was disabled. The request used synchronous, in-memory calculation and did not save this example as a customer portfolio.

Calculation timestamp (UTC)

2026-10-15T14:00:45.633310Z

Parameter date

2026-10-14

Cycle

C

Source archive

cme.span2.20261014.c.zip

Model

SPAN_2

3. Inspect the components

Historical VaR component

$32,399.34

Stress component

$12,260.45

Liquidity component

$72.10

Concentration component

$0.00

Returned initial margin

$44,731.90

Displayed components sum to USD 44,731.89. The service returns USD 44,731.90 as the total. We preserve that one-cent rounding difference rather than adjust a component.

4. Run and compare

With an authorised demo API credential, submit the downloaded request to POST https://demo.api.cumulus9.com/portfolios. Generate a new request ID for your run and send the credential in the Authorization bearer header. Never put credentials in the portfolio file.

The ordinary calculation request uses the available parameter cycle when it runs. Repeating it after parameters change can produce a different amount. Compare the returned parameter date and cycle before comparing numbers. The downloadable response is a selected excerpt; authentication and unrelated operational fields are omitted.

A fixed-date historical replay was attempted but did not complete during this verification. Exchange parameters are not redistributed with this example. Confirm access to the dated parameter set and supported historical workflow with Cumulus9 when an exact historical replay is required.

• Synthetic positions (CSV)
• Calculation request (JSON)
• Actual response excerpt (JSON)
• Date and parameter record (JSON)

What this example establishes

It shows a traceable portfolio input, an actual calculation and the parameter date behind it. It does not establish a universal offset, match every clearing-member add-on or replace the clearing house's margin call. A different book, account treatment, origin, parameter cycle or model configuration can change the requirement.