One token accounts for most of the stablecoin shrinkage: Tether's USDT. If you hold bitcoin or anything priced against it, watch what happens to supply from here.

Why is stablecoin supply shrinking? The short answer is that most of the shrinkage is one token. Circulation fell by more than 5.7 billion units, or 1.91%, in the latest tally from DefiLlama, according to a CryptoSlate report published on November 7. Tether's USDT accounted for 3.65 billion of that, or 63.37%, while Circle's USDC lost 383 million, about 6.6%.

Stablecoins are the cash that sits on crypto's side of the table. When supply grows, there's new money available to buy coins. When it contracts, dollars are being redeemed and leaving, which is a different thing from traders moving between tokens. Frankly, that's why this number gets more attention from desks than most price charts do.

Bitcoin closed at $75,969.06 on November 5, down 5.54% on the day, CryptoSlate noted. The price fall came after the window it measured, so the report doesn't claim the drop caused the slide, and neither should you. What it does show is that the market was losing dollars while the price was already soft.

The ETF side tells the same story. Spot bitcoin funds in the US lost roughly $1.2 billion over the week of November 3 to 7, according to flow tallies built on SoSoValue data, with a single day on November 7 alone running to about $558 million. Fidelity's FBTC led that day with $256.66 million out, followed by ARKB at $144.24 million and BlackRock's IBIT at $131.43 million. Different trackers round the weekly total differently, so treat the exact figure as approximate.

Total stablecoin supply has dropped $15 billion since its mid-May peak, the sharpest decline since TerraUSD's 2022 collapse, but unlike Terra, both USDT and USDC are holding their $1 peg. The GENIUS Act's ban on stablecoin yield is pushing institutional cash into tokenized Treasuries instead. - stablecoin market share declining to treasuries - why investors choosing yield bearing treasury

Put the two together and the picture is uncomfortable. Money is leaving through the regulated front door and through the stablecoin back door in the same week.

The liquidity that should have helped

CryptoSlate's piece is careful on one point that most bullish takes skip. Bank reserve balances at the Federal Reserve rose $67.5 billion between October 28 and November 4, as the Treasury's account fell $79.4 billion. Looser dollar liquidity is the usual cue for traders to buy risk. It didn't work here, and CryptoSlate stressed that the link from bank balances to crypto buying remains unestablished.

That's a useful corrective. Plenty of people had pointed at the reserve rise as a reason to expect a bounce. Stablecoin supply says the dollars that matter to crypto are the ones already inside it, and those went the other way.

Why Tether, and why now?

I wouldn't call this the first real drain of the cycle on one week of data, because DefiLlama's daily snapshots are noisy and CryptoSlate itself flags timing mismatches between its midnight UTC labels and Fed figures. A single contraction of under 2% is a dent. Several in a row would be a trend.

Still, Tether has been losing ground in places that matter for months. CryptoSlate reported on October 19 that USDT balances fell $4.6 billion across 19 major exchanges and lenders in the third quarter, while rivals paid to win deposits. Hyperliquid added $1.5 billion in USDC after an arrangement in which Coinbase shares most of the reserve income with the platform, and Deribit expanded monthly rewards for USDC holders across roughly 70 countries. Tether still handled 84% of the $482 billion in stablecoin payments in the first nine months of 2026, so this is no collapse. But when incentives pull exchange balances toward USDC and buyers are scarce, the marginal USDT gets redeemed.

Tether also gave the market something else to read this week. CEO Paolo Ardoino told the Plan B Forum in Lugano on November 3 that the company holds "give or take 150,000 bitcoin," about $11.5 billion at the time. His line was "It's not much, but it's honest work." Bitcoin Magazine pointed out that Tether's third-quarter attestation, signed off by BDO and published October 30, shows about 100,060 BTC, valued at $8.37 billion as of September 30. The extra 50,000 coins, Tether says, sit in its investment arm and are kept separate from the reserves behind USDT. That explanation may well be right, but it's the company's word, and the attestation doesn't cover those coins.

For readers, the practical read is plain. If you're waiting for the next leg up, watch whether total stablecoin supply stops falling before you watch the price. A rally needs buyers, and buyers need dollars on the platform. Right now the data shows fewer of both. Tether has not commented publicly on the latest supply figures.

Stablecoin market cap has dropped $10 billion since May, including a $7.7 billion decline in June, the steepest pullback since the 2022 Terra collapse. The retreat lands just two days after Circle won final OCC approval for a national trust bank charter, setting up a split screen between contracting on-chain liquidity and deepening regulatory... - why stablecoin supply is declining - Circle bank charter approval impact

Also read: Zcash and Monero hold up as Bitcoin slides toward $75,000 • Ethereum ETFs lose $365 million in a sixth straight week of outflows • Democrats' midterm win leaves crypto exposed over its Trump ties

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