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OpenAgriculture · Growing-season heatWeather index future · simulation

Buenos Aires growing degree days · Week 48 · Nov 23 - Nov 29

Growing degree days at SAEZ · 7 local days, 2026-11-23 to 2026-11-29 · trading closes 11-29 03:00 (15 d)

Market index
68.3°C-days
Long 53.0¢ · Short 47.0¢ per share
Model fair
61.2 ± 14.5
priced 23 min ago
Edge
-7.1
fair minus market
Volume
432
12 traders
Open interest
458 / 403
long / short shares
10 · long pays 0long pays 1 · 120
Market 68.3Model fair 61.2
Listed at 66.8 · quoted by a market maker, no order book · one share moves 0.0091 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-26W48Soybeans98.35long 48¢97.23

How the index builds, day by day

ForecastBeyond the 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.

081511-2311-2411-2511-2611-2711-2811-29
Day-by-day table
DaySourceHighLowGDDRunning total
Mon, Nov 23Forecast22.5°C17.4°C9.9 ± 3.29.9
Tue, Nov 24Forecast19.4°C14.2°C6.9 ± 3.216.9
Wed, Nov 25Forecast20.6°C12.5°C6.9 ± 3.223.8
Thu, Nov 26Forecast21.3°C12.8°C7.4 ± 3.431.2
Fri, Nov 27Forecast25.5°C16.4°C10.8 ± 3.742.0
Sat, Nov 28Forecast25.4°C16.5°C10.8 ± 3.852.8
Sun, Nov 29Beyond the forecast21.3°C15.1°C8.4 ± 4.061.2

Market index path

one step per trade · dashed line: model fair now
54.667.079.4

Recent trades

TimeTradeSharesAmountAvg price
11-13 18:50Buy short43.8920.4046.5¢
11-13 17:50Buy long27.6414.8553.7¢
11-13 12:50Buy shortpair18.958.7946.4¢
11-13 12:50Buy short75.0233.9245.2¢
11-13 11:50Buy short54.9923.9843.6¢
11-13 08:50Buy long94.2152.6755.9¢
11-13 07:50Buy long36.4019.7654.3¢
11-13 00:50Buy long114.4860.0052.4¢
11-12 23:50Buy longpair17.739.0050.8¢
11-12 22:50Buy longpair18.969.5450.3¢
11-12 18:50Buy shortpair27.8313.8049.6¢
11-12 18:50Buy short43.0420.9648.7¢
11-12 13:50Buy shortpair18.558.8947.9¢
11-12 11:50Buy short22.6910.7647.4¢
11-12 10:50Buy short35.2716.4746.7¢

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 11-30 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-26W48
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 48 · Nov 23 - Nov 29 · 7 local days, 2026-11-23 to 2026-11-29
Band
10 to 120
Payoff
Long: (index - 10) / 110 sUSDT per share, held to 0..1. Short: 1 minus that.
Point value
0.0091 sUSDT per share per index point
Trading closes
2026-11-29 03:00 UTC
Settles from
2026-11-30 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-26W48

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 10 to 120 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 →