Weather Fi
Sign in
OpenPower · Cooling demandWeather index future · simulation

Hong Kong cooling degree days · Week 48 · Nov 23 - Nov 29

Cooling degree days at VHHH · 7 local days, 2026-11-23 to 2026-11-29 · trading closes 11-28 16:00 (15 d)

Market index
29.0°C-days
Long 36.3¢ · Short 63.7¢ per share
Model fair
19.8 ± 12.1
priced 23 min ago
Edge
-9.2
fair minus market
Volume
478
10 traders
Open interest
380 / 539
long / short shares
0 · long pays 0long pays 1 · 80
Market 29.0Model fair 19.8
Listed at 32.0 · quoted by a market maker, no order book · one share moves 0.0125 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-26W48LNG for power92.51long 44¢92.64

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.

051011-2311-2411-2511-2611-2711-2811-29
Day-by-day table
DaySourceHighLowCDDRunning total
Mon, Nov 23Forecast21.6°C14.9°C1.4 ± 1.91.4
Tue, Nov 24Forecast23.5°C14.5°C1.9 ± 2.33.3
Wed, Nov 25Forecast24.6°C16.2°C2.9 ± 2.86.2
Thu, Nov 26Forecast24.2°C17.3°C3.3 ± 3.19.5
Fri, Nov 27Forecast25.4°C16.7°C3.6 ± 3.313.1
Sat, Nov 28Forecast24.7°C17.4°C3.6 ± 3.416.7
Sun, Nov 29Beyond the forecast23.4°C17.0°C3.1 ± 3.319.8

Market index path

one step per trade · dashed line: model fair now
15.028.241.3

Recent trades

TimeTradeSharesAmountAvg price
11-13 15:50Buy longpair33.6712.0835.9¢
11-13 15:50Buy short78.2649.7863.6¢
11-13 14:50Buy longpair37.7113.9036.9¢
11-13 14:50Buy short96.0760.0062.5¢
11-13 12:50Buy longpair58.6322.2738.0¢
11-13 12:50Buy short15.589.7462.5¢
11-13 11:50Buy short93.4957.2561.2¢
11-13 10:50Buy short98.5958.1058.9¢
11-13 09:50Buy short106.3260.0056.4¢
11-12 18:50Buy short30.1716.5254.7¢
11-12 16:50Buy long40.2018.1445.1¢
11-12 14:50Buy shortpair20.9211.5355.1¢
11-12 13:50Buy long38.8217.3444.7¢
11-12 12:50Buy long15.116.6544.0¢
11-12 10:50Buy long37.0616.0743.4¢

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 11-29 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-26W48
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 48 · Nov 23 - Nov 29 · 7 local days, 2026-11-23 to 2026-11-29
Band
0 to 80
Payoff
Long: (index - 0) / 80 sUSDT per share, held to 0..1. Short: 1 minus that.
Point value
0.0125 sUSDT per share per index point
Trading closes
2026-11-28 16:00 UTC
Settles from
2026-11-29 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-26W48

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 80 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 →