Current UCUI
68/100
Moderate-High Uncertainty
+4 points from prior reading
Potato Market Intelligence
Potato Index Methodology
Potato index methodology defines how a basket of potato prices becomes a measure of change over time through constituents, weights, base period, price relatives, aggregation, missing-data treatment, revisions, and rebalancing. MassGain connects those technical choices with physical product and geographic exposure so users can test whether an index actually matches their contracts or costs.
Market Data
How to read this market
Potato index methodology defines how a basket of potato prices is converted into a measure of change over time through constituents, weights, base period, price relatives, aggregation, missing-data treatment, revisions, and rebalancing. The object should preserve product and geographic coverage so users know what exposure the index actually represents.
Use the methodology to compare index design with purchasing, production, or contract exposure. Test constituent contribution, weight drift, and regional or sector divergence and document when rebasing, segmentation, or reweighting is needed.
Data Module
Potato Index Methodology
Basketincluded potato markets
Weightsconstituent importance
Basereference period
Calculationprice relatives and aggregation
Controlsmissing data, revisions, rebalancing
Decision useinflation and escalator design
Analysis
Why this matters
Two valid potato indices can move differently because their baskets and weights describe different markets. Fixed weights can also become stale as sourcing or production shifts. The commercial question is not which index is universally best, but which one most closely tracks the exposure being priced or forecast.
Signal 01
Usable Crop Uncertainty Index
UCUI translates crop and market complexity into a simple uncertainty signal. Higher readings indicate greater uncertainty—not necessarily higher prices.
Understand uncertainty. Anticipate risk. Act earlier.
UCUI is designed to analyze potato-industry publications and data signals across regions, varieties, weather, disease, storage, supply, and demand.
WeatherHigh
DiseaseHigh
StorageMedium
SupplyMedium
Single-day snapshot based on a scan of 11,500+ web and social signals. Get historical and real-time data by clicking the button below.
The MassGain Daily
Today’s market analysis.
A daily editorial synthesis of physical potato data, crop signals, market reporting, and what participants should watch next.
September 16, 2026Latest MassGain publication
Potato market steady for now; Russia’s smaller crop is the salient risk
Spot prices are flat and USDA terminal reports read ‘market steady,’ but a renewed forecast for a smaller Russian harvest and recent regional harvest stress leave seasonal import timing and storage losses as the key uncertainty.
Signal 02
MassGain Potato Index
Independent physical-pricing intelligence and market-trend analysis for procurement, forecasting, contracting, and scenario planning.
Core Russet Carton Median
312.45 USD/MT
Latest qualifying physical-market observation
+4.75 (+1.55%)
Price discovery for the physical potato market
MPI is designed to track physical pricing data, price trends, deltas, and divergences across regions and potato types.
Series window45 days
Current public coverageCore russet cartons
Primary source basisQualifying USDA physical rows
UnitUSD per metric tonne
Single-day snapshot based on most recent 45 days worth of data. Limited to US Russets only. Get more complete, global data about all varieties by clicking the button below.
Signal 03
MassGain Spot Reference
An independent spot reference designed for price discovery, contract discussions, procurement comparisons, and risk modeling.
Russet Burbank — U.S. Midsize
305 USD/MT
Demonstration reference format
+1.6% WoW · Confidence: High
A trusted benchmark for pricing, contracts, and risk
MSR is intended to use real transactions and verifiable physical-market data to support negotiations, price checks, contracting, and risk models.
ProductRusset Burbank
SpecificationU.S. midsize, 40–70 count
Reference typePhysical spot benchmark
StatusIn development
Based on most recent 45 days worth of data. Limited to US Russets only. Get more complete, global data about all varities by clicking the button below. Full access also includes historical data -- including depreciated NYMEX/CBOE/EEX spot references -- projections, trends, and AI-driven insights.
The MassGain Product Ladder
From insight to intelligence to action
Four integrated products built for the physical potato market, delivered through public pages, reports, exports, dashboards, and API access.
1
Content
Original research, commentary, aggregated news, and market updates.
- What matters right now?
- What is happening out there?
2
UCUI™
Usable Crop Uncertainty Index: an AI-powered signal of crop risk and market uncertainty.
- Understand uncertainty
- Anticipate risk
- Act earlier
3
MPI™
MassGain Potato Index: independent physical-pricing intelligence and trend analysis.
- Price discovery
- Regional trends
- Procurement planning
4
MSR™
MassGain Spot Reference: an independent benchmark for price discovery and risk modeling.
- Contracts
- Negotiations
- Risk models
Content + UCUI + MPI + MSR + API access
Get historical series, regional detail, constituent data, exports, alerts, and direct data access.
Overview
Who is this for?
This page is for index developers, procurement analysts, economists, and finance teams that need to understand how a potato price index measures change over time. Potato index methodology defines the constituent basket, weights, base period, price relatives, aggregation formula, geographic and product coverage, missing-data rules, revisions, and rebalancing schedule. MassGain helps users connect those technical choices with the physical market and commercial exposure the index represents.
An index can be statistically correct yet commercially mismatched. Fixed weights may become stale, a national basket may hide regional divergence, or a broad potato category may combine fresh, processing, and seed markets. MassGain exposes constituent contributions, tests alternate weights, tracks historical changes, and compares the index with relevant transactions or internal costs. Procurement can select or build an index for escalators, finance can measure category inflation, and governance teams can document controls and limitations. The result is a reproducible measurement framework that clarifies whether movement comes from price, basket composition, or methodology. Users can also evaluate when rebasing, reweighting, segmentation, or a new reference is required.
Use Case
A processor evaluates two potato indices for annual budgeting. MassGain shows one uses fixed national weights and overstates the company’s regional exposure, while the second maps more closely to plant purchases. Finance adopts the matched index and retains the broader series as an external market comparator.
FAQs
What belongs in a potato index methodology?
Constituents, weights, base period, aggregation, price relatives, missing data, revisions, and rebalancing should be documented.
Why can two potato indices move differently?
They may use different products, regions, weights, observation periods, or calculation formulas.
When should an index be reweighted?
Reweight when the represented purchasing, production, or market structure changes materially.
Put this market intelligence to work
Get historical data, regional detail, benchmarks, alerts, exports, and API access tailored to your procurement
and market-analysis needs.
Data and Methodology
Professional market-data standards
MassGain is building transparent public market infrastructure. Each live metric will identify its date, unit, coverage, methodology, and source basis.
Data provenance
MassGain uses public, licensed, contributed, and independently derived physical-market information. Source availability and publication schedules vary.
Timing and revisions
Figures may reflect the latest available observation rather than a same-day transaction. Source data and MassGain calculations may be corrected, restated, or revised.
Not transactional pricing
MassGain figures are informational reference values and do not constitute executable bids, offers, settlements, or guarantees that a transaction can occur at the displayed value.
No individualized advice
Content and data are provided for informational and analytical purposes and do not constitute financial, investment, legal, trading, or individualized procurement advice.
Independent publication
Certain observations may be derived from USDA reports. MassGain is independent and is not affiliated with or endorsed by the USDA.
Commercial use and licensing
Public display does not grant rights to reproduce, redistribute, republish, or incorporate MassGain indices or references into commercial products or contracts without authorization.