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OpenPower · Cooling demandWeather index future · simulation

Hong Kong cooling degree days · Week 47 · Nov 16 - Nov 22

Cooling degree days at VHHH · 7 local days, 2026-11-16 to 2026-11-22 · trading closes 11-21 16:00 (8 d)

Market index
21.7°C-days
Long 43.5¢ · Short 56.5¢ per share
Model fair
20.7 ± 7.5
priced 23 min ago
Edge
-1.1
fair minus market
Volume
214
11 traders
Open interest
254 / 185
long / short shares
0 · long pays 0long pays 1 · 50
Market 21.7Model fair 20.7
Listed at 20.9 · quoted by a market maker, no order book · one share moves 0.0200 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 CDD 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
LNG-VHHH-26W47LNG for power103.73long 53¢105.12

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.

051011-1611-1711-1811-1911-2011-2111-22
Day-by-day table
DaySourceHighLowCDDRunning total
Mon, Nov 16Forecast24.9°C20.2°C4.6 ± 1.84.6
Tue, Nov 17Forecast26.0°C21.9°C5.9 ± 1.910.5
Wed, Nov 18Forecast24.7°C16.9°C2.9 ± 1.913.4
Thu, Nov 19Forecast19.4°C14.9°C0.5 ± 1.013.9
Fri, Nov 20Forecast22.9°C14.7°C1.4 ± 1.715.3
Sat, Nov 21Forecast23.5°C17.9°C2.9 ± 2.318.2
Sun, Nov 22Forecast23.1°C17.0°C2.5 ± 2.320.7

Market index path

one step per trade · dashed line: model fair now
17.722.026.4

Recent trades

TimeTradeSharesAmountAvg price
11-13 18:50Buy shortpair17.409.8056.3¢
11-13 13:50Buy longpair18.858.2343.7¢
11-13 12:50Buy short59.8333.4155.8¢
11-13 05:50Buy short14.337.8754.9¢
11-13 00:50Buy long17.367.8245.0¢
11-12 20:50Buy short27.0214.8254.8¢
11-12 17:50Buy shortpair23.0412.4954.2¢
11-12 16:50Buy shortpair26.5714.2453.6¢
11-12 15:50Buy long53.8024.7846.1¢
11-12 14:50Buy long63.6028.3744.6¢
11-12 10:50Buy shortpair16.359.1556.0¢
11-12 09:50Buy long14.676.4644.0¢
11-12 07:50Buy long85.8536.7542.8¢

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 11-22 19:00. If a day of the period cannot settle, the contract is void and every position is refunded at cost.

Contract specification

Symbol
CDD-VHHH-26W47
Index
Cooling degree days (CDD), in °C-days
Formula
max(0, (high + low) / 2 - 18), summed over the period
Station
VHHH · Hong Kong
Period
Week 47 · Nov 16 - Nov 22 · 7 local days, 2026-11-16 to 2026-11-22
Band
0 to 50
Payoff
Long: (index - 0) / 50 sUSDT per share, held to 0..1. Short: 1 minus that.
Point value
0.0200 sUSDT per share per index point
Trading closes
2026-11-21 16:00 UTC
Settles from
2026-11-22 19:00 UTC
Settlement source
The station's daily record, final and settleable, from the Weather Market oracle
Hedges
Power - Electricity, LNG for power (the exposure it hedges; this contract settles on the index)
Trade CDD-VHHH-26W47

Long gains if CDD 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 0 to 50 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 →