Current UCUI
68/100
Moderate-High Uncertainty
+4 points from prior reading
Potato Market Intelligence
Potato Laspeyres Price Index
A potato Laspeyres price index prices a fixed base-period basket using current observations. Benchmark and procurement teams can reproduce the result easily, then test whether the original product, region, and channel weights still resemble present commercial exposure.
Market Data
How to read this market
A potato Laspeyres price index measures current prices using fixed quantities or expenditure weights from a base-period potato basket. The object should define products, regions, channels, units, base weights, price observations, and treatment of missing constituents.
Use it when a stable historical basket is useful for contract or inflation analysis, then test whether current purchasing still resembles the base exposure. Compare with chain-linked or reweighted versions when sourcing regions, formats, or customer needs change materially.
Data Module
Potato Laspeyres Price Index
ObjectFixed-base-weight potato price index
WeightsBase-period quantities or expenditure
DimensionsProduct, region, channel, unit
Commercial useInflation and contract benchmarking
ComparisonChain-linked or reweighted index
WatchpointFixed weights create substitution bias
Analysis
Why this matters
The Laspeyres structure is attractive because it is transparent and reproducible, but that same fixed basket can become stale. Buyers substitute regions, varieties, or finished products as prices and demand change.
If the actual procurement mix moves away from the base basket, the index can overstate or understate current exposure. Scheduled weight reviews are therefore part of sound benchmark governance.
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 economists, benchmark developers, procurement analysts, and finance teams that need to understand or build a Laspeyres-style potato price index. A potato Laspeyres price index measures current-period prices using quantities or expenditure weights fixed from a base period. MassGain helps users define the potato products, regions, market channels, units, base weights, price observations, and treatment of missing or changing constituents.
Fixed weights make the index transparent and easy to reproduce, but they can become less representative as buyers substitute products, sourcing regions change, or new processing formats gain importance. MassGain allows users to inspect constituent contributions, compare the Laspeyres result with chain-linked or alternative indices, and test sensitivity to the selected base basket. Procurement can use the index for contracts when the basket matches actual exposure, finance can evaluate category inflation, and governance teams can document methodology and rebasing policy. The result is an auditable benchmark that clearly separates price movement from quantity changes while acknowledging substitution bias and structural change. Users can determine whether fixed base-period weights remain commercially relevant or whether the index needs reweighting, segmentation, or a different methodology.
Use Case
A restaurant group builds a Laspeyres potato basket from its prior-year fry, hash-brown, and specialty-product volumes. MassGain shows that the fixed basket tracks category inflation well initially but overstates current exposure after the company shifts volume to another region, prompting a scheduled reweighting.
FAQs
What is a Laspeyres potato price index?
It measures current prices using fixed quantities or expenditure weights from a base period.
What is substitution bias?
Fixed weights may overstate or misstate exposure when buyers change products, regions, or quantities in response to prices.
When should weights be updated?
Reweighting is appropriate when the purchasing basket or market structure no longer resembles the base period.
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.