Collect respondent prices
Respondents submit fair EOD price assessments for the relevant commodity, basis and delivery period.
Methodology
How SPIKE Spot Commodity Index Ukraine is calculated
SPIKE Spot Commodity Index Ukraine uses a repeatable daily process to turn respondent-partner price assessments into verified and locked index values for each position, basis and calculation date.
Calculation approach
From partner EOD assessments to a published spot benchmark
The index is calculated from daily price assessments submitted by a defined group of Spike Brokers respondent partners. Each submitted value should reflect a fair end-of-day market level for the relevant commodity and basis.
Current public bases are CPT Odesa, Ukraine for export positions and CPT parity Odesa, Ukraine for processing positions. Prices are collected for each position and calculation date, then validated. The system identifies the median value in the respondent sample and excludes prices deviating by more than +/-2% from the median as potential outliers.
The index value is calculated as the arithmetic average of the cleaned respondent sample. A basket is publishable only when at least 5 valid respondent prices remain after filtering. This tenant does not use a separate Spike Brokers external indicative because Spike Brokers is the index publisher.
Before publication, values can be reviewed, corrected and versioned. After publication, the final value is locked. The system records changes, recalculations and publication events in an audit log.
CPT Odesa
Export-position basis
CPT parity
Processing-position basis
5+
Minimum valid respondents
EOD
End-of-day price assessment
+/-2%
Median-based outlier filter
Locked
Final value after publication
Methodology
Calculation flow
Validate the sample
The system calculates the median and checks all submitted values against the central market level.
Exclude outliers
Prices deviating by more than ±2% from the median are excluded from the cleaned sample.
Calculate the index
The published value is the arithmetic average of the cleaned sample, provided the minimum respondent count is met.
Verify and lock
Before publication, values may be reviewed and versioned. Once published, the final value is locked and recorded in the audit log.
Official methodology PDF
Download the methodology document used as the basis for SPIKE Spot Commodity Index Ukraine. The production site can replace this file with the approved Spike Brokers version.
Methodology
FAQ
What is SPIKE Spot Commodity Index Ukraine?+
It is a daily Spike Brokers spot benchmark for selected Ukrainian agricultural export and processing positions.
Who provides data?+
Data are collected from a defined pool of Spike Brokers respondent partners. Individual company submissions are not disclosed in public outputs.
How are outliers handled?+
The system calculates the median of the respondent sample and excludes values that deviate by more than ±2% from that median before calculating the final average.
What happens if there is insufficient data?+
If fewer than 5 valid respondent prices remain after filtering, the basket is not publishable as an official index value.
Can published values be changed?+
Before publication, values can be reviewed and versioned. After publication, the final value is locked and changes are recorded through the audit trail.
Can the methodology scale?+
Yes. The methodology supports future weighted baskets, additional delivery periods such as T+60 and T+90, and separate bid, offer or mid quote types.