Depeg risk is the chance a stablecoin stops trading at about one dollar. It usually shows up under stress, when holders sell or redeem faster than the coin can absorb. Most large coins recover within hours or days, but some never do. Which one you get comes down to the cause.
The reason splits into two buckets. In an access shock, the coin is fully backed but the cash is briefly stuck, so once the money is reachable the price snaps back. In a design failure, there is no real reserve to redeem against, so a loss of confidence can feed on itself with nothing to stop it. Same number on your screen, very different ending.
That is why a coin showing $0.97 tells you almost nothing on its own, and why the first move is always to find out why.
How a peg breaks in the first place
The price you watch is not set by the issuer. It is the secondary-market price, what buyers and sellers pay on exchanges. In calm times, traders keep it near a dollar through arbitrage. A depeg is what happens when a rush to sell or redeem overwhelms that repair, and the price slides below a dollar and stays there.
The arbitrage works like a spring. If a coin drifts below one dollar, traders buy it cheap and redeem it for a full dollar with the issuer, and that buying pushes the price back up (source: Federal Reserve note on stablecoin stabilization). The same note explains how the spring snaps. When the market loses faith in the peg, holders rush to redeem before others do, exactly like depositors running an uninsured bank, and that rush amplifies the fall instead of fixing it.
Two things decide how bad it gets. The first is whether the coin has real, reachable reserves to redeem against. The second is how fast holders can actually exit. If the backing is solid and the exit stays open, arbitrage usually wins and the coin recovers. If the backing is thin or the door jams, the slide can run. For the healthy version of this repair loop, see how a stablecoin holds its price, the mechanism a depeg interrupts. If the word itself is still fuzzy, start with what a stablecoin is and come back.
Access shocks versus design failures
Not every slip means the same thing, and the split matters more than the size of the drop. An access shock hits a coin that is fully backed but cannot reach its cash for a moment. A design failure hits a coin that never had enough real backing. One usually heals. The other can be terminal.
The clearest access shock is USDC in March 2023. Circle held about $3.3 billion of USDC reserves, roughly 8 percent of the total, at Silicon Valley Bank when the bank failed on a Friday. Circle could not move that cash over the weekend, so it paused direct redemptions, and USDC fell to about 86 cents on the open market. Then US authorities guaranteed the bank's depositors that Sunday, Circle reopened redemptions on Monday, and the price climbed back to a dollar (source: Federal Reserve note on Silicon Valley Bank and stablecoins). The reserves were largely intact, and the slice stuck at the bank was recovered once its depositors were guaranteed. The coin's trouble was reaching the cash over a closed weekend, not a missing pile of money.
TerraUSD in May 2022 is the opposite. UST was algorithmic, propped up by a paired token called Luna and automatic swaps instead of real reserves. When confidence broke, the supply of Luna hyperinflated about 80 times in two days as its price crashed from about $31 toward a single cent (source: Richmond Fed post-mortem on Terra). With no cash to redeem against, there was nothing to buy the peg back, so the peg was abandoned, and UST and Luna were later removed from major exchanges. That is the difference in one table:
| The slip | What is really wrong | Backing to fall back on | Usual outcome |
|---|---|---|---|
| Access shock | The cash is real but briefly stuck | Yes, once access returns | Recovers in hours or days |
| Design failure | There is little or no real reserve | No | Can spiral and stay broken |
The takeaway is not the dates, it is the diagnosis. A coin's type is your fastest read on which bucket a slip belongs to, which is why knowing whether it is a fiat-backed coin or an algorithmic one comes first, before you react to any number on a screen.
The warning signs you can actually watch
A depeg leaves tracks. Watch the secondary-market price first, because that is where stress shows up. Then look for a gap between venues, a paused or backlogged redemption window, a jump in trading volume, and fresh news about the reserves or the issuer. Together, those signs tell simple noise from real trouble.
Price is the headline signal, but read it in the right place. Market watchers do not check the issuer's own redemption desk to judge a peg, because an issuer almost never offers to redeem for less than a dollar. They watch prices across exchanges, where real supply and demand meet (source: Federal Reserve note on primary and secondary markets for stablecoins). A one-cent flicker on a single venue is usually nothing. The same coin sitting at 97 cents across several deep markets is a real signal worth acting on.
The other signs sharpen the picture. A big jump in trading volume means holders are moving, not sitting. A redemption window that slows or pauses means the easy exit just narrowed. And news that the reserves are stuck, thin, or in doubt is often what starts the selling in the first place. Because most people can only ever sell on the open market, not redeem with the issuer, the gap between those two exits is where the loss lands, which is the whole point of primary versus secondary redemption.
How to respond when a coin slips
Start by finding out why, because the cause, not the price, is what matters. A small, market-wide slip on a large, backed coin has usually been temporary. A slip tied to real doubt about the reserves or the issuer is the more serious kind. What you do about it should follow that diagnosis, not a gut reaction.
Think of it as a short read, not a trade signal. Is the coin large and fully backed, and is the slip small and market-wide? That pattern has usually been temporary stress, and selling below a dollar into a thin market simply turns a paper dip into a realized loss. Is there specific bad news, a frozen bank, a thin or missing reserve report, an issuer gone quiet? That pattern has been the more dangerous one. Checking the backing quickly is easier once you know how to read what actually backs a coin. Whether to wait, exit, or switch coins is your call, and the mechanics of trading out cleanly, the order types, timing, and slippage, belong with market depth and liquidity, not with this guide.
From BloFin's operational view, a live depeg first shows up in the flow as a widening spread between venues and a jump in USDT and USDC volume, well before it becomes a headline. The coins that steady fastest in that flow are the deep, liquid ones, because there is always a buyer near a dollar. None of this tells you which coin to hold, only how to read a rough day in the market, and turning that read into a fixed routine is exactly what evaluating a coin before you rely on it is for.
Why some coins bounce back and some vanish
Recovery comes down to one question: is there real value to redeem against? A coin with high-quality, reachable reserves can be bought back to a dollar, because arbitrage traders know the backing is good. A coin with nothing solid behind it has no floor, so a slide can turn into a spiral that feeds itself.
USDC recovered because the reserves were real and, once a public backstop reached the failed bank, the cash was reachable again. The Bank of England describes a sound stablecoin as one the holder can swap back for real money on demand, and that redemption right is what pulls a backed coin back to a dollar (source: Bank of England stablecoin explainer). Even so, the Federal Reserve's own reading of the 2023 event is a warning: a coin with high-quality backing can hold its peg in calm times and still wobble hard under real stress. Solid reserves reduce the risk, they do not delete it. It also helps that the biggest dollar coins are large by market value, which anyone can check on a public tracker (source: DefiLlama stablecoins data).
The Terra collapse ran the other way. Once faith went, the design minted more of the paired token to defend the peg, which crushed that token's price, which broke faith further. There was no reserve to stop the loop. That is why an algorithmic coin with no assets is treated as a higher-risk category of its own, and why sizing any stablecoin against everything else you hold is the same discipline you would use to weigh risk against return across your crypto.
Telling a real depeg from ordinary crypto noise
A stablecoin is built to sit at one dollar, so any real drift is news in a way it never is for a volatile coin. With Bitcoin, a 5 percent move is a normal day. With a dollar coin, the same move is a signal that something may be wrong.
That gap in expectations is why depegs draw so much attention, and why a tiny flicker gets mistaken for a crisis. So keep two things apart. A one-cent wobble that clears in minutes on one exchange is usually thin trading or a data glitch, not a depeg, and it sits closer to everyday crypto volatility than to a real break. A sustained gap across deep markets, with heavy volume and worrying news behind it, is the real thing. A stress event can also spread, because a scare in one coin can push nervous holders out of others, so a slip is not always about the coin you happen to be watching.
One last boundary. This guide is about the durable pattern, the causes, the signals, and the response, not a live scorecard of which coin is off its peg today. A specific unfolding incident, with dated prices and blow-by-blow detail, is the job of news coverage and a dated market brief, not an evergreen explainer. For the bigger picture of everything else that can go wrong with a coin, the full map of stablecoin risks puts depeg risk in its place among the rest.
Frequently asked questions
Can a stablecoin depeg upward, above one dollar?
Yes, though it is rarer and usually gentler. When demand spikes or holders flee a shaky coin for a safer one, buying pressure can lift a coin slightly above a dollar for a while. During the 2023 stress that hit USDC, a couple of unaffected coins traded just above their peg as money rushed in. An upward drift can still cost you, because paying more than a dollar for a coin worth a dollar is a small built-in loss the moment you buy.
How big a price move counts as a depeg?
There is no official line, and small moves are normal. A stablecoin can sit a few hundredths of a cent off a dollar all the time as trades clear, and that is just noise. Many watchers only start paying attention when a coin holds a cent or more off a dollar across several deep venues, not on one thin exchange. The size matters less than whether the gap sticks and spreads. A brief blip that closes in minutes is rarely a real depeg.
Can I set an alert to catch a depeg early?
Yes. Most price trackers and exchanges let you set a price alert, so you get pinged if a coin crosses a level you choose, like $0.995 or $0.99. That turns watching into something automatic instead of a chore you have to remember. The tools themselves, and how to wire up live monitoring, sit outside this guide, but the idea is simple: pick a threshold that means something to you and let the alert do the watching. An early ping buys you time to check the cause before reacting.
Does a stablecoin's size protect it from depegging?
Not on its own. A large coin usually has deeper markets and more buyers near a dollar, which can help it steady faster, but size is not immunity. The biggest dollar coins have still slipped off a dollar under real stress, as USDC did in 2023. What protects a coin is the quality and reachability of its backing, not how many are in circulation. Treat size as one helpful signal among several, never proof that a coin cannot break.
Do issuers reimburse holders for losses during a depeg?
Generally no. An issuer promises to redeem the coin for a dollar to its direct customers, who are mostly large or verified accounts, but it does not cover losses you take selling on the open market. There is no deposit insurance behind a stablecoin the way there is behind a bank account. If you sell at 90 cents during a panic, that loss is yours. The issuer's duty is to honor redemption at par, not to prop up the secondary-market price.
Does holding more than one stablecoin help against a depeg?
It can lower the chance that a single coin's problem hits all your dollars at once, since two well-run coins are unlikely to break for the same reason at the same time. The limit is that coins of the same type can stumble together in a broad shock, so spreading is not a full shield. How much to keep in each, and whether the effort is worth it, is really a portfolio question, not a stablecoin rule.
Researched and written by the BloFin Academy editorial team with AI-assisted drafting. Updated July 2026. Primary sources: the US Federal Reserve, the Richmond Fed, and the Bank of England, with stablecoin market-size data from DefiLlama. All facts independently verified against cited documentation current as of July 2026.
This article is educational and general in nature, not financial, investment, tax, or legal advice. Stablecoins carry real risks, including loss of the peg, frozen or delayed redemptions, and loss of access, and their value is not guaranteed. A depeg can become a permanent loss if a coin's backing or design fails. Nothing here is a recommendation to buy, sell, or hold any specific asset. Do your own research, and consider a licensed professional before making financial decisions. BloFin does not provide investment advice.