Understanding SGE Ag(T+D): How China's Deferred-Settlement Silver Contract Actually Works

Why This Contract Matters

When our SGE silver premium reading moves, the price behind it is almost always coming from a single contract: Ag(T+D), the Shanghai Gold Exchange's deferred-settlement silver product.

This is China's most actively traded silver product for institutional and retail participants alike, and its price behavior is what drives Chinese silver premium data.

Yet Ag(T+D) has an unusual structure that mixes elements of a futures contract, a spot contract, and a swap.

Understanding it is worth the effort if you are trying to read Chinese silver market signals correctly.

This guide walks through the specification, the settlement mechanics, and the reasons the contract behaves the way it does.

The Basic Structure

Ag(T+D) is quoted in Chinese yuan per kilogram.

The "T+D" naming refers to the deferred settlement structure: unlike a standard spot contract that settles the next business day, Ag(T+D) allows positions to be carried indefinitely, subject to a daily settlement fee mechanism described below.

The Deferred Settlement Fee (延期费)

This is the mechanic that most surprises readers coming from a Western futures background.

Unlike a futures contract which has a fixed expiry, Ag(T+D) positions can be rolled forward indefinitely.

To prevent one side from accumulating unboundedly against the other, SGE assesses a daily settlement fee.

The direction of the fee depends on whether the market is net long or net short.

If more traders are long than short (as measured by SGE at daily settlement), longs pay shorts a fee for the day.

If more are short than long, shorts pay longs.

The rate is typically small — a fraction of a percent per day — but over weeks or months, the accumulated fee can be meaningful.

The signal value of the settlement fee direction is real.

When Chinese silver traders are structurally short (perhaps because of production hedging by silver refiners), the market gives long carriers a small positive daily payment for holding their positions.

When speculation is heavily long, the fee reverses.

Why It Behaves Like a Futures But Prices Like a Spot

Ag(T+D) does not trade at a persistent premium or discount to the London silver spot the way a distant COMEX futures contract might.

Its price gravitates toward Chinese silver spot because delivery is available any business day.

If Ag(T+D) traded meaningfully above spot, an arbitrageur could sell Ag(T+D), take spot silver, deliver into the Ag(T+D) contract, and pocket the difference.

This delivery-optionality anchor keeps the two prices closely aligned.

At the same time, Ag(T+D) has the leverage of a futures contract.

A trader can control 15 kg of silver with roughly 10-15% margin.

This attracts speculative participation that a spot-only market would not.

The result is a spot-anchored price with futures-scale trading volume — a combination that gives SGE silver its unique market microstructure.

How Ag(T+D) Relates to Au(T+D)

The gold sibling of this contract is Au(T+D), which follows almost identical mechanics with different unit sizes.

Au(T+D) is quoted in CNY per gram like Ag(T+D), but its contract unit is 1 kilogram instead of 15.

The two contracts share the settlement fee mechanism, the deferred settlement structure, and the delivery-anchored pricing.

Where they differ is in how they connect to global markets.

Chinese gold demand and Chinese silver demand have different structural drivers — gold is dominated by investment and jewelry demand plus PBOC accumulation; silver is dominated by industrial demand plus a smaller investment share.

As a result, Au(T+D) tracks global gold movements more closely than Ag(T+D) tracks global silver movements.

This is why our SGE gold premium series behaves differently from our SGE silver premium series over time.

The Weekend Sentinel Value

A specific data-handling issue is worth being explicit about.

SGE trading is closed on weekends and Chinese public holidays.

Some data feeds return a sentinel value of -2.0 for missed reads on those days.

Our data pipeline filters this specifically because a -2.0 value passed through raw would generate nonsensical premium calculations.

After a weekend or exchange holiday, the latest SGE observation and the USD benchmark may cover different elapsed periods. This can make the first calculated premium after reopening less directly comparable with the previous observation.

The data available to this site cannot determine whether a Monday change resulted from global repricing, activity within the Chinese market, currency movement, or a difference in timestamps. Treat it as an observation requiring additional verification rather than a demand signal.

How to Interpret the Stored Ag(T+D) Observation

The SGE silver value used by this site is based on an Ag(T+D)-related quotation obtained from the exchange’s public data. It is converted from CNY per gram into USD per troy ounce and compared with the site’s USD spot benchmark.

A change in the calculated premium shows that the converted SGE observation and the benchmark changed by different amounts. It does not, by itself, establish whether the cause was Chinese physical demand, investor positioning, currency movement, contract conditions, market hours, or a timestamp difference.

• Check the timestamps: The SGE observation and USD benchmark may not represent exactly the same moment.
• Check the source status: Holiday, missing, stale, or filtered values can reduce comparability.
• Do not apply a fixed signal threshold: A premium above 2%, or a move toward zero, does not have one consistent interpretation.
• Use official data for contract analysis: Volume, open interest, settlement rules, margin, and delivery activity are not included in this site’s premium calculation.

Access and Contract Details

Participation rules, eligible members, margin requirements, settlement fees, delivery procedures, and contract specifications can change. Check the current SGE product documents and member rules before relying on a contract detail quoted in this article.

This site does not determine who traded, whether a position was held for investment or hedging, or whether a price move resulted in physical delivery.

How the Dashboard Uses the Value

The dashboard normalizes the available SGE silver observation into USD per troy ounce and calculates its percentage difference from the USD spot benchmark. The result is an informational comparison rather than an executable quote or a direct measure of Chinese silver demand.

Missing observations are not treated as zero. When a usable market observation is unavailable, the interface should identify the value as unavailable or estimated according to the applicable data status.

Key Takeaways

• Ag(T+D) is an SGE deferred-settlement silver product whose current rules should be verified through SGE.
• The site uses an available Ag(T+D)-related observation as the regional silver input.
• The calculated premium can be affected by exchange rates, timing, market schedules, contract conditions, and data availability.
• The premium is not a direct demand indicator and does not provide a buy or sell signal.