Let's start with the entry points: Binance Official Site, Official Binance App, and the iOS Installation Guide. As of April 2026, total global stablecoin circulating supply sits at roughly $121 billion (source: DefiLlama), made up of about $82 billion in USDT, $29 billion in USDC, and $6.5 billion in DAI. Total stablecoin circulating supply is a direct proxy for how much sidelined capital is sitting outside the crypto market — historically, an acceleration in stablecoin supply growth tends to precede a BTC bull run, while stalling or shrinking supply tends to line up with a bear market or sideways chop.
Stablecoins are cryptocurrencies pegged to fiat currency (primarily the US dollar), used as a unit of value and payment instrument on crypto exchanges, in on-chain DeFi, and for cross-border settlement.
| Stablecoin | Issuer | Backing | Circulating supply ($100M) | Primary use |
|---|---|---|---|---|
| USDT | Tether | USD + Treasuries + commercial paper | 820 | Exchanges / Asian OTC markets |
| USDC | Circle | USD + Treasuries | 290 | US-compliant venues / DeFi |
| DAI | MakerDAO | Crypto-asset collateral | 65 | On-chain DeFi |
| FDUSD | First Digital | USD + Treasuries | 14 | Binance ecosystem |
| TUSD | TrueUSD | USD + Treasuries | 5 | Select trading pairs |
| PYUSD | PayPal | USD + Treasuries | 8 | PayPal ecosystem |
USDT accounts for 67.8% of total stablecoin market cap, making it the de facto pricing unit and OTC settlement medium for crypto. USDC dominates in compliance-conscious contexts, while DAI represents the decentralized end of the spectrum.
The table below shows how key stablecoin supply milestones since 2018 have lined up with BTC price (sources: DefiLlama historical archive + CoinGecko):
| Date | Stablecoin supply ($100M) | BTC price | Cycle phase |
|---|---|---|---|
| 2018-12 | 26 | $3,200 | Bear market bottom |
| 2019-12 | 50 | $7,200 | Recovery |
| 2020-12 | 290 | $29,000 | Bull run kicking off |
| 2021-05 | 1,030 | $58,000 | Mid-way up the main rally |
| 2021-11 | 1,520 | $69,000 | Bull market top |
| 2022-12 | 1,360 | $16,500 | Bear market bottom |
| 2023-12 | 1,290 | $42,000 | Recovery |
| 2024-12 | 1,650 | $97,000 | Bull market top |
| 2026-04 | 1,210 | $65,000 | Choppy consolidation |
The pattern: stablecoin supply climbing from $2.6 billion to $152 billion lined up with BTC rising from $3,200 to $69,000; supply stalling or falling lines up with BTC trading sideways or dropping. Stablecoin supply tends to move in sync with, or slightly ahead of, BTC's medium- to long-term direction.
The month-over-month growth rate in stablecoin supply is more informative than the absolute figure. As a rule of thumb, growth above 5% a month lines up with a bull run kicking off, 1-3% lines up with a moderate uptrend, and under 1% or negative growth lines up with a choppy or bearish market.
| Period | Stablecoin supply MoM growth | BTC MoM price change over the same period |
|---|---|---|
| 2020-04 to 2021-05 | +18% average | +20% average |
| 2021-06 to 2021-11 | +5% average | +5% average |
| 2021-12 to 2022-11 | -3% average | -8% average |
| 2023-01 to 2023-12 | -1% average | +4% average |
| 2024-01 to 2024-12 | +4% average | +6% average |
| 2025-01 to 2025-12 | -2% average | -1% average |
| 2026 Q1 | +0.7% | +1.2% |
| 2026 Q2 (April) | +1.8% | +3.2% |
The 2026 Q2 month-over-month growth rate of +1.8% is the strongest since Q4 2024, but it's still far below the +18% pace seen during the 2020-2021 bull market.
USDT's distribution across different chains reflects regional usage habits. Here's USDT's on-chain distribution as of April 2026 (sources: Tether's official transparency report plus Etherscan/Tronscan):
| Blockchain | USDT circulating supply ($100M) | Share | Primary use case |
|---|---|---|---|
| Tron (TRX) | 580 | 70.7% | Asian OTC / cross-border settlement |
| Ethereum (ETH) | 195 | 23.8% | DeFi / compliant exchanges |
| Solana (SOL) | 22 | 2.7% | DeFi / memecoins |
| BNB Chain | 12 | 1.5% | Binance ecosystem |
| Avalanche (AVAX) | 5 | 0.6% | DeFi |
| Arbitrum | 4 | 0.5% | L2 DeFi |
| Other | 2 | 0.3% | - |
USDT's $58 billion circulating supply on Tron far exceeds Ethereum's, largely because transferring on the Tron network is extremely cheap (about $1 per transfer) and fast to confirm (roughly 3 seconds), making it the go-to rail for Asian OTC trading, cross-border payments, and gray-market fund flows.
Stablecoin supply relates to BTC price in two distinct ways: as a leading indicator and as a coincident indicator.
The leading relationship shows up before a bull run kicks off. Between April and October 2020, stablecoin supply grew from $8 billion to $23 billion (+187%) while BTC was still chopping around in the $7,000-12,000 range. During that window, stablecoin supply acted as a leading indicator, with BTC's main rally kicking off 3-6 months later.
The coincident relationship shows up during the main leg of a bull run. Between January and May 2021, stablecoin supply and BTC price rose almost in lockstep, with a correlation coefficient of 0.92 — during that period, stablecoin supply behaved as a coincident indicator rather than a leading one.
Tether publishes a reserve transparency report every quarter. The Q1 2026 report shows USDT's reserve composition as follows:
| Reserve asset | Amount ($100M) | Share |
|---|---|---|
| Short-term US Treasuries | 800 | 84.5% |
| Cash and bank deposits | 25 | 2.6% |
| Money market funds | 30 | 3.2% |
| Bitcoin (BTC) | 70 | 7.4% |
| Gold | 25 | 2.6% |
| Other corporate debt | 10 | 1.1% |
| Secured loans | 1 | 0.1% |
| Other investments | 0.5 | 0.05% |
| Total reserves | 962 | 101.6% (including the surplus) |
Tether's $80 billion in Treasury holdings now exceeds what some sovereign nations hold, which has meaningfully reduced USDT's systemic risk — but it also ties USDT's fate closely to the depth of the Treasury market. A severe default or ratings downgrade in Treasuries would put pressure on USDT as well.
Stablecoins are the core liquidity providers for DeFi protocols. Across leading protocols like Curve, Uniswap, Aave, and Compound, stablecoins commonly make up more than 40% of TVL (total value locked).
| Protocol | TVL ($100M) | Stablecoin share of TVL |
|---|---|---|
| Aave | 280 | 58% |
| Compound | 65 | 62% |
| Curve | 32 | 78% |
| Uniswap V3 | 48 | 35% |
| MakerDAO | 95 | 100% (collateral backing DAI issuance) |
Growth in stablecoin supply directly boosts DeFi TVL, which in turn tends to push up the price of DeFi governance tokens like UNI, AAVE, and CRV.
After spot Bitcoin ETFs launched in 2024, stablecoins stopped being BTC's only funding channel. The table below compares the two funding channels from 2024 to 2026:
| Period | Stablecoin supply change ($100M) | ETF net inflows ($100M) | Combined |
|---|---|---|---|
| Full year 2024 | +260 | +470 | +730 |
| Full year 2025 | -100 | +120 | +20 |
| 2026 Q1 | +9 | +19 | +28 |
| 2026 Q2 (April) | +22 | +28 | +50 |
2024 marked the first year the ETF channel overtook stablecoins as crypto's biggest funding gateway. But ETF money doesn't flow back into USDT — it's a one-way, "closed" inflow into BTC. Tracking both channels together is key to gauging total liquidity in the crypto market.
For users in mainland China, the most common on-ramp into crypto is C2C fiat trading on leading exchanges like Binance and OKX, and the coin they overwhelmingly trade for is USDT.
The typical C2C flow: RMB → paid to a C2C merchant via Alipay, WeChat Pay, or a bank card → the merchant sends USDT to the buyer's exchange account → the USDT can then be used to trade spot BTC, ETH, or be moved to the user's own wallet. USDT-TRC20 (on the Tron network) is the preferred choice because of its low fees (about 1 USDT) and fast arrival.
Q: What is a stablecoin? A: A cryptocurrency pegged to fiat currency (primarily the US dollar), used as a unit of value on crypto exchanges, in on-chain DeFi, and for cross-border settlement. The major stablecoins include USDT, USDC, and DAI.
Q: What is total stablecoin supply right now? A: As of April 2026, roughly $121 billion (per DefiLlama). That breaks down to about $82 billion in USDT, $29 billion in USDC, and $6.5 billion in DAI.
Q: Why is stablecoin supply considered a liquidity indicator? A: Stablecoins are the vehicle for capital sitting outside the crypto market; growing supply means outside capital is coming in, and shrinking supply means it's pulling back. Historically, stablecoin supply has moved in sync with or slightly ahead of BTC's medium- to long-term price direction.
Q: Why is most USDT on the Tron network? A: Transferring on the Tron network costs just $1 and confirms in about 3 seconds, making it the top choice for Asian OTC and cross-border settlement. As of April 2026, Tron accounts for 70.7% of USDT's supply.
Q: What does USDT's reserve composition look like? A: The Q1 2026 transparency report shows $80 billion in Treasuries, $2.5 billion in cash, $3 billion in money market funds, $7 billion in BTC, and $2.5 billion in gold, with a surplus of about 1.6%.
Q: Could USDT depeg or collapse? A: USDT's reserves are predominantly Treasuries, which keeps systemic depeg risk relatively low — but it also ties USDT closely to the Treasury market. A severe Treasury default or ratings downgrade would still put pressure on it.
Q: Does growing stablecoin supply mean a bull market is coming? A: Month-over-month stablecoin growth above 5% typically lines up with a bull run kicking off. Right now (2026 Q2), monthly growth is only +1.8%, still far below the +18% pace of the 2020-2021 bull market.
Q: How large is the stablecoin share of TVL across DeFi protocols? A: Leading DeFi protocols commonly have stablecoins making up more than 40% of TVL — Aave at 58%, Compound at 62%, Curve at 78%, and MakerDAO at 100%. Growth in stablecoin supply directly pushes up DeFi governance token prices.
Q: Which funding channel matters more — stablecoins or spot ETFs? A: Starting in 2024, the ETF channel overtook stablecoins as the largest funding gateway (2024 saw +$47 billion via ETFs vs. +$26 billion via stablecoins). But ETF capital only flows one way into BTC, while stablecoin capital can circulate throughout the crypto market.
Q: How do mainland Chinese users buy USDT? A: The main channel is C2C fiat trading on leading exchanges like Binance and OKX. RMB is paid to a merchant via Alipay or WeChat Pay, and USDT is received in return. USDT-TRC20 is preferred for its low fee (about 1 USDT).
Data sources: DefiLlama stablecoin supply data, Tether transparency reports, Etherscan, Tronscan, CoinGecko historical price data, SoSoValue ETF data, as of April 25, 2026.