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OpenAgriculture · Growing-season heatWeather index future · simulation

Buenos Aires growing degree days · Week 47 · Nov 16 - Nov 22

Growing degree days at SAEZ · 7 local days, 2026-11-16 to 2026-11-22 · trading closes 11-22 03:00 (8 d)

Market index
86.6°C-days
Long 45.2¢ · Short 54.8¢ per share
Model fair
80.5 ± 9.3
priced 23 min ago
Edge
-6.1
fair minus market
Volume
618
14 traders
Open interest
511 / 716
long / short shares
55 · long pays 0long pays 1 · 125
Market 86.6Model fair 80.5
Listed at 90.2 · quoted by a market maker, no order book · one share moves 0.0143 sUSDT per index point

Real-asset futures that follow this index

simulated prices

Each contract below is a commodity price index the demo simulates: 100 on the day it was listed, moved by this contract's GDD and by a simulated market factor. Weather-implied is the price at the index this market is trading at now; when it differs from the asset's own market price, simulated spread traders trade the two against each other.

ContractMarket priceWeather-implied
SOYB-SAEZ-26W47Soybeans102.45long 55¢102.63

How the index builds, day by day

Forecast

Each bar is one local day's contribution to the index. Days on the final record count as they stand; the rest are the model's estimate, with a whisker one standard deviation either way.

0102011-1611-1711-1811-1911-2011-2111-22
Day-by-day table
DaySourceHighLowGDDRunning total
Mon, Nov 16Forecast24.8°C19.4°C12.1 ± 1.912.1
Tue, Nov 17Forecast27.5°C18.7°C13.0 ± 1.925.1
Wed, Nov 18Forecast30.0°C18.6°C13.8 ± 1.738.9
Thu, Nov 19Forecast29.1°C18.8°C13.6 ± 2.052.5
Fri, Nov 20Forecast20.3°C14.8°C7.6 ± 2.560.1
Sat, Nov 21Forecast24.5°C13.9°C9.3 ± 2.669.4
Sun, Nov 22Forecast23.7°C18.6°C11.1 ± 3.080.5

Market index path

one step per trade · dashed line: model fair now
76.386.496.4

Recent trades

TimeTradeSharesAmountAvg price
11-13 19:50Buy short112.3260.0053.4¢
11-13 18:50Buy short58.5130.0151.3¢
11-13 17:50Buy shortpair30.1515.1350.2¢
11-13 14:50Buy short93.1545.3148.6¢
11-13 10:50Buy shortpair23.3111.0047.2¢
11-13 09:50Buy long41.5921.8752.6¢
11-13 07:50Buy long70.8336.2551.2¢
11-13 06:50Buy shortpair15.767.8049.5¢
11-13 06:50Buy long70.4335.0849.8¢
11-13 01:50Buy long126.7260.0047.3¢
11-12 23:50Buy longpair18.098.2445.5¢
11-12 22:50Buy long53.2423.7844.7¢
11-12 21:50Buy longpair15.386.7443.8¢
11-12 20:50Buy longpair10.854.7243.5¢
11-12 20:50Buy short86.2247.9255.6¢

A trade marked pair is one leg of a simulated spread trade: the other leg is in a real-asset contract that follows this index.

Settlement

This contract settles on the sum of the station's daily records, as soon as the oracle marks all 7 days final and settleable - no earlier than 11-23 06:00. If a day of the period cannot settle, the contract is void and every position is refunded at cost.

Contract specification

Symbol
GDD-SAEZ-26W47
Index
Growing degree days (GDD), in °C-days
Formula
(high + low) / 2 - 10 with both held to 10..30 °C, summed over the period
Station
SAEZ · Buenos Aires
Period
Week 47 · Nov 16 - Nov 22 · 7 local days, 2026-11-16 to 2026-11-22
Band
55 to 125
Payoff
Long: (index - 55) / 70 sUSDT per share, held to 0..1. Short: 1 minus that.
Point value
0.0143 sUSDT per share per index point
Trading closes
2026-11-22 03:00 UTC
Settles from
2026-11-23 06:00 UTC
Settlement source
The station's daily record, final and settleable, from the Weather Market oracle
Hedges
Agriculture - Soybeans, Corn, Wheat (the exposure it hedges; this contract settles on the index)
Trade GDD-SAEZ-26W47

Long gains if GDD finishes above the level you pay for.

Virtual sUSDT only. No monetary value.

Rules in short
  • Long gains when the index finishes higher, short when it finishes lower. A long and a short share together always pay 1 sUSDT.
  • Outside the band 55 to 125 the contract pays as if the index had finished on the edge.
  • You pay in full when you buy. What you paid is the most you can lose: no margin, no liquidation.
  • You can sell back to the market maker at any time before trading closes, when the last day of the period begins.
  • Void, with every position refunded at cost, if any day of the period cannot settle on the record.
Full rules →