Current UCUI
68/100
Moderate-High Uncertainty
+4 points from prior reading
Potato Market Intelligence
Grower Potato Stocks
Grower potato stocks are potatoes still held under producer control at a defined reporting date. MassGain compares those holdings with contracts, variety, quality, storage condition, sales pace, and regional demand so processors, growers, and lenders can distinguish physical ownership from commercially accessible open supply.
Market Data
How to read this market
Grower potato stocks measure potatoes still held under producer control at a defined reporting date. The market object should be segmented by region, variety, quality, storage condition, contract commitment, and intended use where those details are available.
Use grower stocks to assess marketing pace, potential supplemental supply, inventory value, and expected cash conversion. Do not equate producer-held tonnes with open market supply until commitments, quality, and location are considered.
Data Module
Grower stock context
Inventorypotatoes held by producers
Regionlocation of stored crop
Commitmentscontracted versus uncommitted volume
Qualityspecification and storage condition
Sales paceseasonal drawdown
Decision usesupplemental supply and grower liquidity
Analysis
Why this matters
High grower stocks can signal slow movement or abundant supply, but they can also represent committed potatoes waiting for scheduled delivery. Quality can further reduce the amount that is genuinely available to new buyers.
The analytical distinction is between ownership and accessibility. A processor should care about uncommitted, specification-compliant stocks within a practical freight radius, while a lender may care about inventory value and timing of sale. The same headline stock number can imply very different commercial outcomes.
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 growers, processors, lenders, storage operators, and analysts that need to understand potato stocks held by growers. Grower stocks represent potatoes remaining under producer control at a defined reporting date, but the figure does not automatically indicate open-market availability. MassGain places the reported inventory beside contract commitments, variety, quality, storage condition, regional demand, sales pace, and historical drawdown.
The distinction between physical stock and commercially accessible stock is essential. A grower may hold potatoes that are already committed to a processor, retained for seed, unsuitable for a buyer’s specification, or deteriorating in storage. MassGain helps users compare current grower holdings with prior seasons and identify whether high stocks reflect slow sales, deliberate storage, a larger crop, or limited marketability. Processors can assess supplemental supply, growers can review marketing pace, and lenders can evaluate inventory value and expected cash conversion. The page turns a producer-held stock number into a more useful measure of timing, quality, commitments, and potential market pressure.
Use Case
A processor sees grower stocks above average and delays contracting additional volume. MassGain shows most of the surplus is already committed or outside the required solids specification, while genuinely open suitable stock is limited. Procurement secures a smaller supplemental tranche before the headline inventory creates false confidence.
FAQs
What are grower potato stocks?
They are potatoes held by producers at a defined reporting date.
Do grower stocks equal open supply?
No. Potatoes may be contracted, retained, off-specification, poorly located, or quality-impaired.
How does MassGain interpret grower stocks?
It connects inventory with commitments, quality, storage, sales pace, prices, and regional demand.
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.