Stablecoin supply: the slow signal worth watching
Explainer · Stablecoin desk · Published 13 October 2026 · By TradeSignalsHQOur Stablecoin desk shows the total supply of dollar stablecoins and how it changed over 30 and 90 days. Unlike prices, that number moves slowly, and that is what makes it useful as background. This guide explains how stablecoins are created and removed, who reports the figures, what a change in supply can reasonably suggest, and where the reading breaks down. It is educational only and does not recommend buying, selling or holding any asset.
In one sentence. Supply rises when an issuer creates new coins against dollars it receives and falls when holders redeem coins for dollars, so a sustained change tells you roughly how many dollars are parked inside the crypto system — not what anyone will do with them, or when.
How are stablecoins created and removed?
For a dollar-backed stablecoin, the issuer stands ready to create ("mint") coins for dollars and to take coins back ("redeem", often called burning) for dollars. In an April 2025 staff statement, the SEC's Division of Corporation Finance described this type of coin as one that the issuer mints and redeems on a one-for-one basis with U.S. dollars at any time, backed by a reserve of dollars and other low-risk, readily liquid assets worth at least the redemption value of the coins in circulation (SEC Division of Corporation Finance, Statement on Stablecoins, 4 April 2025). The Bank for International Settlements adds that most stablecoins are issued by a single, central entity, and that the issuer's reserve pool and its capacity to meet redemptions back the promise of a fixed value (BIS Annual Economic Report 2025, chapter III).
So the supply figure is a running total: coins minted minus coins redeemed. Coins changing hands between users, or between exchanges, do not change it.
Who reports the numbers?
Issuers report their own reserves, and rules on what they must publish are tightening. Under the U.S. GENIUS Act, a permitted issuer must publish the monthly composition of its reserves on its website, disclose a redemption policy with clear procedures for timely redemption, and hold identifiable reserves on an at least one-to-one basis (GENIUS Act, Public Law 119-27). The Act takes effect at the earlier of 18 months after its enactment on 18 July 2025 or 120 days after regulators issue final rules; the Federal Reserve published proposed rules on 29 September 2026 (Federal Register). Some issuers were already supervised: New York's Department of Financial Services has required, since June 2022, that the reserves of dollar-backed stablecoins it oversees be at least equal to the coins outstanding at the end of each business day and be examined at least monthly by an independent certified public accountant (NYDFS guidance, 8 June 2022).
Totals across all issuers come from data aggregators. Our desk uses DefiLlama's public stablecoin data, summing dollar-pegged coins. Aggregators make their own choices about which coins and blockchains to count, so two sites can show different totals for the same day.
What can a change in supply tell you?
The U.S. Treasury observed in 2021 that stablecoins are primarily used to facilitate trading of other digital assets (U.S. Treasury, 1 November 2021), and the BIS describes them as an on- and off-ramp to the crypto ecosystem and a way to transact on blockchains without the volatility of other crypto. That is why a sustained rise in supply is read as dollars arriving in the crypto system and a sustained fall as dollars leaving: new coins are minted when someone delivers dollars to an issuer, and coins are redeemed when someone wants dollars back.
Assumptions for this worked example: total supply of $250 billion rising to $255 billion over 30 days, with every coin backed one-to-one. The change is +$5 billion, or +2.00%, which averages about $0.167 billion of net minting a day. A 2% rise over a month is the kind of slow drift the desk is built to show; it says that, on balance, more dollars came in than went out over that period.
Where does the signal break down?
- Supply is not demand to buy. A dollar parked in a stablecoin can be used to buy other crypto, or it can simply sit there. Supply counts the coins, not the intent.
- Timing is loose. A rise over 30 or 90 days says little about the next day or week. The desk is a slow gauge on purpose.
- Pegs can fail. The BIS notes that stablecoins trade in secondary markets at an exchange rate that can deviate from par. In the extreme case, the SEC described how TerraUSD, an "algorithmic stablecoin", depegged from the U.S. dollar in May 2022 and fell close to zero (SEC press release 2023-32). A supply total that includes a failing coin overstates the dollars really there.
- Runs show up late. Treasury's 2021 statement names the potential for destabilising runs among stablecoin risks. A run appears in supply as redemptions, after holders have already acted.
- Rules change demand. Once the GENIUS Act applies, permitted issuers may not pay holders any form of interest or yield. Changes like that can shift supply between coins and platforms for reasons unrelated to crypto prices.
How should you treat a "stablecoin signal" from a channel?
As one input, with its source and time attached. Ask whether the figure is total supply or one issuer's, which aggregator it comes from, and over what period. Be wary of anyone who uses supply data to promise a price move: the CFTC reminds investors that there is no such thing as a guaranteed investment or trading strategy (CFTC), and its fraud advisory warns against acting on unsolicited advice, fake screenshots and testimonials (CFTC advisory).
Is holding a stablecoin like holding dollars in a bank?
No. Under the GENIUS Act, payment stablecoins are not backed by the full faith and credit of the United States and are not subject to FDIC deposit insurance. Your claim depends on the issuer, its reserves and its redemption terms — and on the platform where you hold the coin. Read the issuer's redemption policy and reserve reports before relying on any stablecoin.
Sources
- SEC Division of Corporation Finance, Statement on Stablecoins, 4 April 2025 (staff statement).
- Bank for International Settlements, Annual Economic Report 2025, chapter III.
- U.S. Congress, GENIUS Act (Public Law 119-27), enacted 18 July 2025.
- Federal Reserve, notice of proposed rulemaking under the GENIUS Act, Federal Register, 29 September 2026.
- New York State Department of Financial Services, Guidance on the Issuance of U.S. Dollar-Backed Stablecoins, 8 June 2022.
- U.S. Treasury, President's Working Group report on stablecoins, 1 November 2021.
- SEC, Press release 2023-32 (Terraform Labs), 16 February 2023.
- CFTC, Understand the Risks of Virtual Currency Trading and Relationship investment scams.
Risk warning. Educational content only, not financial or investment advice. Stablecoins can lose their peg, and crypto assets are highly volatile; you can lose all the money you put in.