Silver’s Restock Whiplash: London ETFs Drink Deep, Shanghai Rebuilds, COMEX Thins—and the Curve Keeps Paying for ‘Now’
Copy link
There are weeks when silver trades like a headline and weeks when it reads like a warehouse ledger. This one did both. London ETF custodians absorbed fresh metal at the fastest clip in weeks; Shanghai’s vaults snapped from famine to feast; COMEX stocks slid to nine-month lows; and the term structure continued to reward immediacy over patience. Taken together, the tape says the same thing in three accents: more investors want fully backed ounces, the Chinese pipeline is refilling from a depleted base, and Western “comfort metal” is not what it was even two months ago.
Start with the hardest numbers in the West. Silver ETFs held in London added 297 tonnes week-on-week (+1.4%) to 21,934 tonnes, capping a six-week run of +1,484 tonnes (+7.26%). When ounces migrate into ETF custody, they stop being available to other buyers without a redemption. That’s why our London “free float” estimate—the pool of metal not immobilized in ETF vehicles—fell 5.34% WoW to ~168.8 million ounces. In plain English: more bars are now spoken for, and fewer are left for the next allocation.
That re-immobilization is happening with a trend-friendly backdrop. From 22 July to 18 November (latest COT window), silver rallied ~27.8% while commercials (swap dealers + producers) trimmed gross shorts ~32.6% to an 11-month low near 53,000 contracts. Commercials lightening the short book as price rises is not a guarantee of upside—but historically it is not what you see at tops either. It is what you see when hedgers step back and let price discover the next level.
The most dramatic turn came from China. After months of persistent drawdowns, Shanghai’s silver vaults posted their largest weekly inflow in 18 months: +133 tonnes to 821 tonnes (26.4 Moz). That capped a three-week sprint that lifted stocks by 301 tonnes (+58%). The ramp didn’t start from comfort; it started from emptiness. In the prior fortnight, the city had already logged +223 tonnes (+43%) to 742 tonnes, then +261 tonnes (+50%) to 781 tonnes with +93 tonnes week-to-date—and before that, +54 tonnes WTD. In short: three straight weeks of heavy restocking after a 61% slide earlier in the autumn.
Price and positioning validated the urgency. China’s spot premium stayed positive (about +2.8% with SHAGPM fixing around US$63.06/oz), and intraday prints flirted with US$63 even as international screens wobbled. Meanwhile, a domestic silver fund manager issued risk warnings as the fund traded ~12% above its underlying—a reminder that when the public goes hunting for physical exposure through listed wrappers in a thin window, premiums can detach from NAV. That is not a sign of froth by itself; it is a sign that delivery certainty is being bid.
Across the Pacific, the warehouse line did not contradict the story; it completed it. COMEX silver stocks slipped to a nine-month low—455.8 Moz on Monday—and then printed the largest single-day outflow in three weeks, –2.5 Moz to 453.3 Moz. On a week-to-date basis, one update showed –321k oz before the bigger draw landed. None of those numbers scream “crisis,” but they do remove the cushion dealers lean on when nearby delivery windows tighten. It’s the quiet part of a squeeze: no one headline, just fewer loose bars.
You can see that tightness in the basis rather than the banner. EFP spreads kept shrinking. The Dec ’25 line traded ~US$-0.45/oz versus spot (negative basis), while Mar ’26 flipped to a modest premium (~US$+0.20 to +0.28/oz; later quotes ~+0.34/oz) and May ’26 held a little higher (~+US$0.76 to +US$0.82/oz). Shanghai told the same story in yuan: the SHFE forward curve remained slightly backwardated even as vaults refilled. In both venues the message is identical—near-dated ounces are more valuable than paper promises out the curve, and the market is still paying for “now.”
Backwardation doesn’t have to be dramatic to matter. A persistent, modest negative basis is the market’s way of rationing immediacy without theatrics. It tends to resolve one of two ways: either inventories rebuild enough to re-open the carry trade, or spot climbs until deferred prices look cheap again. This week we got partial restock in China, deeper draw in the U.S., and fresh ETF immobilization in London—a mix that argues the rationing is not done.
In the listed world, flows leaned the same way. SLV’s most-traded call was the US$57 strike expiring next Friday, with volume running ~5.5× open interest—classic sign of new money reaching for convexity rather than rolling existing lines. Skew backed the read. One snapshot had the 25-delta risk-reversal near +8.2 in favor of calls, the “call wall” rolling to US$55, and the most-traded strike at US$53 (Mar ’26 expiry). You don’t need to worship options to understand what that means: participants are paying up for the right to be long into a tight tape.
A simple confusion deserves to be retired. Restocking is not bearish when it arrives from a low base and alongside a positive basis. China’s three-week surge—+301 tonnes to 821 tonnes—doesn’t flood the market; it rebuilds operational inventory that had been whittled away. That’s why Shanghai’s curve stayed slightly backwardated while the bars arrived: factories, wholesalers and investors still value the next ounce more than the later ounce.
Likewise, regionally divergent premiums are a feature of a global metal with local uses, not a contradiction. China can sit +3% vs. LBMA while London ETFs vacuum up ounces and New York warehouses drift lower. The plumbing reconciles those differences over weeks, not hours.
For wholesale desks, the playbook is unglamorous and profitable. When London free float falls, COMEX stocks drift, and EFPs compress, the winning move is to stage deliverable inventory in jurisdictions where lift-out and settlement are predictable—Singapore and London first among equals. Replacement cost now matters more than last-print P&L. Quote certainty, not bravado. And remember that options-led gamma near retail strikes (US$55–57) can create air pockets in U.S. hours; keep hedges nimble around those levels.
If your profile is conservative—PMETs, civil servants, family offices—the signal is simpler. The job is not to predict the exact hour backwardation flips or premiums compress; it is to own allocated ounces before those changes force you to pay urgency premia. The pieces that matter most for that decision all moved the same way this week: ETF bars immobilized, Shanghai restocked from a low base, COMEX comfort thinned, and near-dated futures priced beneath spot. Build positions steadily; avoid leverage; let custody do the talking. If you want a real-time read on whether China remains bid versus London, keep inproved.com/lbma-vs-sge open during Shanghai hours and watch the differential rather than the chatter.
Silver’s institutional bid in London tightened the available pool precisely as China’s pipeline refilled and U.S. warehouse comfort slipped. The curve kept paying for immediacy—not loudly, but consistently—and the options market told you public money prefers upside tails to downside insurance. None of that guarantees a vertical line on the chart. It does tell you that the market’s narrow door—the one between “want” and “have”—is getting crowded again.
When that happens, price doesn’t need a narrative. It needs only time and a few more buyers who decide they’d rather have metal today than promises for spring.
Hugo Pascal’s observation about the AU9999 contract hitting a 10-week volume high underscores the increasing significance of physical gold trading on the Shanghai Gold Exchange. This trend not only highlights robust domestic demand in China but also reflects broader shifts in the global gold market toward physical-backed assets.
Latest articles
Tool and strategies modern teams need to help their companies grow.
Invite users to stay updated with exclusive insights and market trends by subscribing to the newsletter.
Start stacking your bullion. Download the InProved app and build your legacy in gold and silver.
+65 8899 3720
support@inproved.com