USDC Adds $584 Million in a Week, Driving $1 Billion Stablecoin Market Surge

Stablecoins continue to absorb billions in fresh supply, and no issuer is currently minting faster than Circle. $USDC growth accelerated again this past week, with the token adding roughly $584 million to its market capitalization in seven days, according to data reviewed by Crypto Briefing. That single-week gain accounted for most of a combined $1 billion increase spread across $USDC, Ethena’s $USDe, and PayPal’s $PYUSD, underscoring how much of the sector’s current expansion rests on one issuer. The inflows arrive amid a broader regulatory thaw in the United States: federal stablecoin legislation signed into law in July 2025 established a framework for payment stablecoin issuers, a milestone widely credited with opening the door to the institutional and corporate adoption now visible in weekly supply data.

$USDC Spearheads Stablecoin Market Expansion

$USDC’s latest weekly gain confirms it as the fastest-growing large stablecoin in a market that has grown to between $303 billion and $310 billion in total supply. That range reflects how quickly capital moves between issuers, but the direction is clear: dollar-pegged tokens keep absorbing demand, and Circle’s token is capturing an outsized share of it.

Market Cap Growth and Supply Share

$USDC now accounts for roughly $74 billion to $77 billion of total stablecoin supply, or about 24% of the market. That still places it well behind Tether’s $USDT, which commands the largest slice at around $184 billion, or roughly 60% market share. The gap in raw supply is significant, but it does not tell the whole story of where each token is actually used.

On-Chain Transaction Volume Dominance

The picture flips when usage is measured. Despite trailing $USDT by a wide margin in total supply, $USDC has captured between 60% and 70% of adjusted on-chain transaction volume during multiple periods throughout 2026. In other words, $USDC punches well above its weight in actual usage rather than outstanding balances. That distinction matters for anyone gauging which stablecoin is doing the heavy lifting in payments, DeFi settlement, and exchange flows rather than sitting parked in wallets.

Nor is this a one-time spike. $USDC posted an even larger jump in August 2026, adding $1.5 billion to its supply in a single week. The more recent $584 million gain is smaller by comparison, but analysts tracking the pattern describe it as consistent, repeatable minting demand rather than a short-lived surge.

Key Stablecoins Contributing to Weekly Supply Growth

The $1 billion combined weekly increase was not solely a $USDC story. Three tokens with very different designs and risk profiles each contributed, and understanding how they work helps explain why the broader stablecoin market keeps expanding even as individual tokens swing.

$USDC’s Regulatory-Backed Infrastructure

$USDC remains the most conventional of the three. Circle backs the token with cash and short-term Treasuries, publishes regular attestations of its reserves, and has leaned heavily on a reputation for regulatory compliance to win over institutional users. That structure is a large part of why $USDC continues to dominate on-chain transaction share without leading in total supply.

$USDe’s Delta-Neutral Strategy with $ETH

Ethena’s $USDe takes a fundamentally different approach. Rather than holding cash reserves, it preserves its dollar peg through a delta-neutral strategy, acquiring spot $ETH while concurrently establishing short positions in $ETH futures to offset price exposure. $USDe currently sits in the $4 billion to $6 billion range, smaller than $USDC or $USDT but still a meaningful contributor to the sector’s weekly growth.

$PYUSD’s Supply Contractions and Ranges

PayPal’s $PYUSD, built on infrastructure from Paxos, tells a more volatile story. The token has experienced notable supply contractions in prior months, with drawdowns ranging between 11% and 35% at various points. Its current supply sits between $2.7 billion and $3.9 billion, a reminder that not every stablecoin issuer enjoys the steady upward trajectory $USDC has shown lately.

Zcash’s Volatility Fuels Major Crypto Liquidations

While stablecoins expanded quietly in the background, a louder story unfolded in the derivatives market, where Zcash’s price action triggered one of the sharpest liquidation events of the year.

Price Surge to Near-Decade Highs

Zcash surged roughly 20% on September 4, touching an intraday high near $1,023 to $1,051, the highest level $ZEC has traded in nearly a decade. The move pushed total crypto liquidations to approximately $212 million across the market, a scale that reflects how much leverage had built up around the token beforehand.

Short Squeeze Dynamics and Liquidation Scale

Short liquidations on $ZEC perpetual futures alone totaled between $34.5 million and $44 million during recent trading sessions, a disproportionately large share of the broader $212 million total given that Zcash is not among the largest cryptocurrencies by market cap. Open interest in $ZEC futures had climbed above $2 billion, with a heavy concentration of bearish bets. Much of that short positioning traced back to a critical vulnerability disclosed in May 2026 in Zcash’s Orchard shielded pool, a bug that pushed traders into shorts. That lopsided setup turned a modest price rally into a violent squeeze. $ZEC ranked among the top assets for daily liquidations throughout September, a sign the derivatives market around the coin remains far more leveraged than its spot trading volume alone would suggest.

Impact of Grayscale’s ZCSH ETF Launch

The clearest catalyst behind the rally appears to be Grayscale’s ZCSH spot ETF, which debuted on August 25, 2026. In the fortnight following its listing, the fund had already pulled in more than $400 million in assets. The timing lines up: $ZEC’s ascent began shortly after ZCSH launched, and the price move accelerated into early September right as the fund crossed the $400 million mark. Institutional inflows created sustained buying pressure in the spot market, and that pressure squeezed the leveraged shorts left over from the post-vulnerability pessimism. The listing also extends a trend that has reshaped crypto market structure since US spot Bitcoin ETFs launched in January 2024: traditional asset managers are steadily wrapping digital assets in regulated exchange-traded products, connecting spot demand to institutional capital in ways that smaller-cap tokens like $ZEC had rarely experienced before.

Market Outlook and Risks from Leverage and ETF Inflows

The two stories—stablecoin growth on one side and a leveraged squeeze on the other—illustrate two very different kinds of crypto market behavior occurring at the same time. One reflects steady, institutional-grade infrastructure growth. The other shows how quickly leverage can distort price discovery in a smaller-cap asset once a single catalyst, such as an ETF, shifts sentiment.

The $2 billion in open interest still sitting on $ZEC futures leaves the market fragile. A sharp reversal could just as easily trigger a liquidation cascade in the opposite direction. Two variables are worth watching going forward: the pace of inflows into Grayscale’s ZCSH ETF, since a slowdown could remove the buying pressure that has supported the rally, and whether short positions rebuild at elevated price levels, which would set up conditions for an even sharper squeeze later on.

On the stablecoin side, the underlying dynamic is less dramatic but arguably more consequential for the broader market. Consistent $USDC growth, paired with its outsized share of on-chain transaction volume, suggests that liquidity and settlement activity in crypto increasingly runs through Circle’s rails even as $USDT keeps the larger balance sheet. That divide between supply share and actual usage is likely to keep shaping how traders, exchanges, and DeFi protocols choose which dollar token to route through.

Source: CryptoNews