The world isn't short of copper. The LME is short of warrants.
Registered warrants have fallen to 168.6kt in a month (+30.4%), with the cancellation ratio pinned near 29%. Over the same stretch COMEX stocks climbed to a record 742kt and another 143kt sits off-warrant in LME sheds — the copper exists; it just isn't deliverable. Cash–3M has run from +246 to +61 (0.43%) in a week, and the Holdings report shows no one above 50% — which means no lending-guidance cap. This backwardation is unanchored: no rule puts a ceiling on it (contrast aluminium, where a 50–80% holder's lending obligation pins the spread). The import window is shut and exports are blocked by duty; China's two exchanges hold 108kt combined — less than the LME's own warrant pool. M1 (2026-09-16) is 17 trading days away.
Validate the inputs before calling a relief valve open
Confirmed open0 / 6Only checked windows count
Same-day dual-session coverage6 / 6AM checks direction · PM is production
Production exceptions0No stale or material conflict in production
Closest to parityLead PB +188±250 yuan/t treated as noise
Import / export window matrix
The track preserves SHFE/LME geometry; P&L, window state and data quality are separated for clarity
Latest PM nan · 2026-08-21
Metal & qualitySHFE/LME positionImport P&L
Lead PBNear parity
Export 5.72Now 8.57Import 8.47
+188yuan/t · Near parity
Copper CUNear parity
Export 6.00Now 7.59Import 7.62
-437yuan/t · Import closed
Nickel NIDual-session checked
Export 5.67Now 7.66Import 7.70
-600yuan/t · Import closed
Aluminium ALDual-session checked
Export 5.52Now 7.35Import 8.31
-3,102yuan/t · Import closed
Zinc ZNDual-session checked
Export 6.55Now 6.76Import 7.95
-4,554yuan/t · Import closed
Tin SNDual-session checked
Export 6.03Now 7.69Import 7.88
-10,852yuan/t · Import closed
Import P&L uses the latest same-day PM main contract, with AM checking direction. Export P&L remains a BW estimate; sources and parameters are not disclosed publicly.
Copper · import P&L (yuan/t)
History keeps a comparable daily basis; the final point uses latest same-day PM
-437yuan/t
Nickel · import P&L (yuan/t)
History keeps a comparable daily basis; the final point uses latest same-day PM
-600yuan/t
Detail table · stocks & window P&L▾
Metal
LME stock
SHFE stock*
COMEX stock
SHFE receipts
Import P&L
Export P&L est.
Read
Copper CU
238.6 kt
89.5 kt (+19,817)
741.8 kt
46,105 (+6,974)
-437Near parity
-22,669
LME is draining while COMEX holds 742kt; import P&L is -437 yuan/t and the window remains closed
Zinc ZN
93.1 kt
156.0 kt (+1,181)
3.0 kt
114,403 (-657)
-4,554Dual-session checked
-807near
About 807 yuan/t from export parity; if it opens, Chinese metal flows back offshore via Southeast Asia
Aluminium AL
246.9 kt
403.8 kt (-18,300)
1.6 kt
274,201 (-11,030)
-3,102Dual-session checked
-5,924
Import P&L is -3,102 yuan/t; SHFE stocks are 403.8kt and the window is firmly shut
Tin SN
5.4 kt
6.0 kt (+56)
—
—
-10,852Dual-session checked
-92,305
Both same-day AM and PM observations are negative; the import window is closed
Lead PB
416.9 kt
75.0 kt (-209)
1.4 kt
61,703 (-2,215)
+188Near parity
-5,350
Inside the noise band; treated as near parity, not a confirmed opening
Nickel NI
268.5 kt
112.3 kt (-771)
—
101,782 (-415)
-600Dual-session checked
-33,698
PM is negative and AM/PM straddle zero, so the window is near parity
* SHFE stocks are weekly (21-Aug-26); COMEX copper is read as reported; import P&L uses latest same-day PM with AM as a direction check.
“What do you deliver?” — cumulative public OI through M1 runs ~11× on-warrant stock, 17 trading days to M1
Closing stock
238.6 kt
-1.4k d/d · 1w +14.9%
On-warrant stock
168.6 kt
1M +30.4%
Cancellation ratio
29.3%
1w -26.3pp
Cash–3M
+61.3
back 0.43% · 1w +245.6
Off-warrant (T-3)
143.0 kt
below on-warrant
Stock structure (1M, daily)
Stack = closing stock
On-warrantCancelled
Cancellation ratio (1M)
cancelled ÷ closing stock
Cash–3M spread (1M)
Positive = backwardation; T-1
MOC front curve (to +3M)
By prompt date; downward slope = backwardation
The delivery horizon — prompt OI vs on-warrant stock (lots)
Every prompt at its true calendar date; needles above the red line exceed on-warrant stock in lot-equivalent; shading = countdown to M1; ↺ = backfilled from the prior snapshot
The cumulative public prompt-OI proxy through M1 (2026-09-16) is 75,175 lots ≈ 1,879kt — 11.1× on-warrant stock.
Futures position banding (08-19)
Band scale: occupied segments light up; further right = more concentrated
5-9%10-19%20-29%30-39%40%+
L
2
S
1
L
2
S
1
L
12
S
11
Cell value = number of holders in that band (as of the data date). The further right the longs sit, the stronger the potential pull on the front of the curve.
Warrant / Tom / Cash holdings concentration (08-19)
The closer to the red line, the closer to the mandatory-lending zone
▲ 50% lending-guidance line
30-40%40-50%50-80%80-90%90%+
Warrant holdings
×1
Tom exposure
×1×1
Cash exposure
×1×1
Crossing the red line triggers the LME lending-guidance obligation (50-80%: lend tom-next at ≤0.5% of cash/day; 80-90%: ≤0.25%; 90%+: at level).
Holder ≥50% on the books · lending guidance activeStructure is delivery-sensitive; the margins to watch are cancellations, concentration and off-warrant flows. Structural observations only; not investment advice.
INTERNAL-EDITION SECTIONS
Desk viewSame-day desk read and risk flags on copperINTERNAL
Score decomposition & watch levelsWhat builds the composite score — and the trigger levelsINTERNAL
Day-by-day band trackingDays on the 90%+ band, and the migration pathINTERNAL
The deepest backwardation of the six (3.2%); stocks and concentration tightening together
Closing stock
93.1 kt
-1.3k d/d · 1w +0.6%
On-warrant stock
88.6 kt
1M +3.8%
Cancellation ratio
4.9%
1w -14.6pp
Cash–3M
+126.2
back 3.20% · 1w +89.527d #2 high
Off-warrant (T-3)
29.4 kt
below on-warrant
Stock structure (1M, daily)
Stack = closing stock
On-warrantCancelled
Cancellation ratio (1M)
cancelled ÷ closing stock
Cash–3M spread (1M)
Positive = backwardation; T-1
MOC front curve (to +3M)
By prompt date; downward slope = backwardation
The delivery horizon — prompt OI vs on-warrant stock (lots)
Every prompt at its true calendar date; needles above the red line exceed on-warrant stock in lot-equivalent; shading = countdown to M1; ↺ = backfilled from the prior snapshot
The cumulative public prompt-OI proxy through M1 (2026-09-16) is 68,432 lots ≈ 1,711kt — 19.3× on-warrant stock.
Futures position banding (08-19)
Band scale: occupied segments light up; further right = more concentrated
5-9%10-19%20-29%30-39%40%+
L
3
SOCR unreliable — excluded ⚠
L
41
S
32
L
3
S
12
Cell value = number of holders in that band (as of the data date). The further right the longs sit, the stronger the potential pull on the front of the curve.
Warrant / Tom / Cash holdings concentration (08-19)
The closer to the red line, the closer to the mandatory-lending zone
▲ 50% lending-guidance line
30-40%40-50%50-80%80-90%90%+
Warrant holdings
×1
Tom exposure
×1×1
Cash exposure
×1×1
Crossing the red line triggers the LME lending-guidance obligation (50-80%: lend tom-next at ≤0.5% of cash/day; 80-90%: ≤0.25%; 90%+: at level).
Holder ≥50% on the books · lending guidance activeStructure is delivery-sensitive; the margins to watch are cancellations, concentration and off-warrant flows. Structural observations only; not investment advice.
INTERNAL-EDITION SECTIONS
Desk viewSame-day desk read and risk flags on zincINTERNAL
Score decomposition & watch levelsWhat builds the composite score — and the trigger levelsINTERNAL
Day-by-day band trackingDays on the 50-80% band, and the migration pathINTERNAL
Concentrated but capped by lending guidance; the inventory side stays loose
Closing stock
246.9 kt
+0.0k d/d · 1w -1.2%
On-warrant stock
243.9 kt
1M -0.8%27d low
Cancellation ratio
1.2%
1w -1.0pp
Cash–3M
-12.0
contango 0.37% · 1w +6.4
Off-warrant (T-3)
89.6 kt
below on-warrant
Stock structure (1M, daily)
Stack = closing stock
On-warrantCancelled
Cancellation ratio (1M)
cancelled ÷ closing stock
Cash–3M spread (1M)
Positive = backwardation; T-1
MOC front curve (to +3M)
By prompt date; downward slope = backwardation
The delivery horizon — prompt OI vs on-warrant stock (lots)
Every prompt at its true calendar date; needles above the red line exceed on-warrant stock in lot-equivalent; shading = countdown to M1; ↺ = backfilled from the prior snapshot
The cumulative public prompt-OI proxy through M1 (2026-09-16) is 109,906 lots ≈ 2,748kt — 11.3× on-warrant stock.
Futures position banding (08-19)
Band scale: occupied segments light up; further right = more concentrated
5-9%10-19%20-29%30-39%40%+
L
12
S
3
L
4
S
21
L
31
S
3
Cell value = number of holders in that band (as of the data date). The further right the longs sit, the stronger the potential pull on the front of the curve.
Warrant / Tom / Cash holdings concentration (08-19)
The closer to the red line, the closer to the mandatory-lending zone
▲ 50% lending-guidance line
30-40%40-50%50-80%80-90%90%+
Warrant holdings
×1
Tom exposure
×1
Cash exposure
×1
Crossing the red line triggers the LME lending-guidance obligation (50-80%: lend tom-next at ≤0.5% of cash/day; 80-90%: ≤0.25%; 90%+: at level).
Holders present in the 30-50% bandsLoose on every dimension; nothing on the near-term watch list. Structural observations only; not investment advice.
INTERNAL-EDITION SECTIONS
Desk viewSame-day desk read and risk flags on aluminiumINTERNAL
Score decomposition & watch levelsWhat builds the composite score — and the trigger levelsINTERNAL
Day-by-day band trackingDays on the 30-40% band, and the migration pathINTERNAL
Tin SNRisk level LowCancel 10.4%C-3M -361Cover 5.7×▼ expand
Very thin absolute stock (5.4kt); structure is sensitive to any single participant
Closing stock
5.4 kt
-0.0k d/d · 1w -2.7%
On-warrant stock
4.8 kt
1M -22.2%
Cancellation ratio
10.4%
1w -5.0pp
Cash–3M
-361.0
contango 0.65% · 1w -290.0
Off-warrant (T-3)
1.8 kt
below on-warrant
Stock structure (1M, daily)
Stack = closing stock
On-warrantCancelled
Cancellation ratio (1M)
cancelled ÷ closing stock
Cash–3M spread (1M)
Positive = backwardation; T-1
MOC front curve (to +3M)
By prompt date; downward slope = backwardation
The delivery horizon — prompt OI vs on-warrant stock (lots)
Every prompt at its true calendar date; needles above the red line exceed on-warrant stock in lot-equivalent; shading = countdown to M1; ↺ = backfilled from the prior snapshot
The cumulative public prompt-OI proxy through M1 (2026-09-16) is 5,471 lots ≈ 27kt — 5.7× on-warrant stock.
Futures position banding (08-19)
Band scale: occupied segments light up; further right = more concentrated
5-9%10-19%20-29%30-39%40%+
L
22
S
21
L
11
S
22
Cell value = number of holders in that band (as of the data date). The further right the longs sit, the stronger the potential pull on the front of the curve.
Warrant / Tom / Cash holdings concentration (08-19)
The closer to the red line, the closer to the mandatory-lending zone
▲ 50% lending-guidance line
30-40%40-50%50-80%80-90%90%+
Warrant holdings
Tom exposure
Cash exposure
Crossing the red line triggers the LME lending-guidance obligation (50-80%: lend tom-next at ≤0.5% of cash/day; 80-90%: ≤0.25%; 90%+: at level).
No significant concentration in the Holdings reportLoose on every dimension; nothing on the near-term watch list. Structural observations only; not investment advice.
INTERNAL-EDITION SECTIONS
Desk viewSame-day desk read and risk flags on tinINTERNAL
Score decomposition & watch levelsWhat builds the composite score — and the trigger levelsINTERNAL
Day-by-day band trackingBand migration path and persistenceINTERNAL
Lead PBRisk level LowCancel 12.7%C-3M -41Cover 2.6×▼ expand
Loose on both ends
Closing stock
416.9 kt
-0.2k d/d · 1w +0.6%
On-warrant stock
363.9 kt
1M -9.0%
Cancellation ratio
12.7%
1w -0.3pp
Cash–3M
-40.7
contango 2.19% · 1w -43.6
Off-warrant (T-3)
47.7 kt
below on-warrant
Stock structure (1M, daily)
Stack = closing stock
On-warrantCancelled
Cancellation ratio (1M)
cancelled ÷ closing stock
Cash–3M spread (1M)
Positive = backwardation; T-1
MOC front curve (to +3M)
By prompt date; downward slope = backwardation
The delivery horizon — prompt OI vs on-warrant stock (lots)
Every prompt at its true calendar date; needles above the red line exceed on-warrant stock in lot-equivalent; shading = countdown to M1; ↺ = backfilled from the prior snapshot
The cumulative public prompt-OI proxy through M1 (2026-09-16) is 37,470 lots ≈ 937kt — 2.6× on-warrant stock.
Futures position banding (08-19)
Band scale: occupied segments light up; further right = more concentrated
5-9%10-19%20-29%30-39%40%+
L
12
S
L
51
S
4
L
31
S
3
Cell value = number of holders in that band (as of the data date). The further right the longs sit, the stronger the potential pull on the front of the curve.
Warrant / Tom / Cash holdings concentration (08-19)
The closer to the red line, the closer to the mandatory-lending zone
▲ 50% lending-guidance line
30-40%40-50%50-80%80-90%90%+
Warrant holdings
Tom exposure
Cash exposure
Crossing the red line triggers the LME lending-guidance obligation (50-80%: lend tom-next at ≤0.5% of cash/day; 80-90%: ≤0.25%; 90%+: at level).
No significant concentration in the Holdings reportLoose on every dimension; nothing on the near-term watch list. Structural observations only; not investment advice.
INTERNAL-EDITION SECTIONS
Desk viewSame-day desk read and risk flags on leadINTERNAL
Score decomposition & watch levelsWhat builds the composite score — and the trigger levelsINTERNAL
Day-by-day band trackingBand migration path and persistenceINTERNAL
Loose across the board; the import window remains closed after cross-checking
Closing stock
268.5 kt
+0.3k d/d · 1w +1.4%
On-warrant stock
257.9 kt
1M -0.1%
Cancellation ratio
4.0%
1w +0.7pp
Cash–3M
-163.0
contango 0.96% · 1w -200.327d high
Off-warrant (T-3)
102.2 kt
below on-warrant
Stock structure (1M, daily)
Stack = closing stock
On-warrantCancelled
Cancellation ratio (1M)
cancelled ÷ closing stock
Cash–3M spread (1M)
Positive = backwardation; T-1
MOC front curve (to +3M)
By prompt date; downward slope = backwardation
The delivery horizon — prompt OI vs on-warrant stock (lots)
Every prompt at its true calendar date; needles above the red line exceed on-warrant stock in lot-equivalent; shading = countdown to M1; ↺ = backfilled from the prior snapshot
The cumulative public prompt-OI proxy through M1 (2026-09-16) is 68,686 lots ≈ 412kt — 1.6× on-warrant stock.
Futures position banding (08-19)
Band scale: occupied segments light up; further right = more concentrated
5-9%10-19%20-29%30-39%40%+
L
21
S
42
L
31
S
4
L
21
S
22
Cell value = number of holders in that band (as of the data date). The further right the longs sit, the stronger the potential pull on the front of the curve.
Warrant / Tom / Cash holdings concentration (08-19)
The closer to the red line, the closer to the mandatory-lending zone
▲ 50% lending-guidance line
30-40%40-50%50-80%80-90%90%+
Warrant holdings
Tom exposure
Cash exposure
Crossing the red line triggers the LME lending-guidance obligation (50-80%: lend tom-next at ≤0.5% of cash/day; 80-90%: ≤0.25%; 90%+: at level).
No significant concentration in the Holdings reportLoose on every dimension; nothing on the near-term watch list. Structural observations only; not investment advice.
INTERNAL-EDITION SECTIONS
Desk viewSame-day desk read and risk flags on nickelINTERNAL
Score decomposition & watch levelsWhat builds the composite score — and the trigger levelsINTERNAL
Day-by-day band trackingBand migration path and persistenceINTERNAL
The score aggregates five structural dimensions — concentration, a cumulative public OI proxy through M1, momentum and spread confirmation among them — under fixed, auditable rules. Dimension definitions, weights and trigger levels are internal-edition content; the public edition shows risk levels and direction only.
LME Tom-Next lending rules
Position*
Max tom-next lending premium
50–79.99%
0.5% of prior cash price
80–89.99%
0.25% of prior cash price
90–100%
At level (no premium)
* Warrants + Tom + Cash ÷ live warrants. Tightness without a ≥50% holder has no such cap on the spread.
LME Front Month Lending Rules (effective 17 Mar 2026)
Cumulative Spot Futures Position / Total Available Stock
Maximum M1 lending premium
50–79.99%
3% of prior M1 official close
80–89.99%
1.5%
90–100%
At level
LME Notice 26/049. The official ratio needs member/client cumulative net positions and Total Available Stock, neither reproducible from public data. This report's all-market prompt OI through M1 divided by on-warrant stock is a conservative public proxy, not the official ratio or a breach test.
Data chain & lags
Reports are archived at 06:30 SGT. After the London 11:00 release window, the workflow allows a 30-minute buffer and refreshes at 18:30 SGT (19:30 in winter), retrying every 15 minutes through 20:30. Stocks/prices are T-1; banding and holdings are T+2; off-warrant stock is a T-3 voluntary disclosure and a floor estimate.
Data quality
This issue's sentinels: 0 missing OI rows backfilled from the prior snapshot (dashed in charts), 3 low-confidence banding rows flagged, 1 curve outliers excluded, 1 stock row(s) dropped on internal-consistency checks. A stock row that fails internal consistency (on-warrant + cancelled must equal total) is treated as an upstream OCR column shift and dropped in full for that date. Nothing unreliable is silently kept.
Disclaimer
This report is market-structure research for reference only and does not constitute investment advice, an offer or a solicitation; you act on it at your own risk. Built on official LME publications (T+2 lag); contains no real-time prices; no warranty is given as to accuracy, completeness or timeliness.