New York Fed Reports Stablecoin Sector Hits $308 Billion After GENIUS Act

Stablecoin Supply Expands to $308B as GENIUS Act Reshapes Issuer Landscape

The U.S. dollar stablecoin market reached approximately $308 billion in mid-2026, up $71 billion (30%) since the New York Fed's April 2025 assessment, according to a Liberty Street Economics report published July 31, 2026. The expansion coincides with the July 2025 passage of the GENIUS Act, which established the first federal regulatory framework for payment stablecoins. Industry concentration remains unchanged: Tether (USDT) and Circle (USDC) control over 80% of total assets.

Reserve Composition Divergence Widens

The NY Fed analysis underscores structural divergence between the two dominant issuers. USDC reserves consist primarily of cash and short-term U.S. government securities. USDT's attested reserves, as of December 2025, allocated nearly 24% to corporate bonds, gold, Bitcoin, secured loans, and other investments. This composition gap defines the collateralization risk profile across the market's top tier.

The Fed's case study revisits the March 2023 SVB failure, when approximately 8% of USDC reserves sat at the failed bank. USDC's secondary market price dropped below peg, triggering net outflows and a compression in the Circle Reserve Fund's weighted average maturity. WAM fell below the 5th percentile of Treasury-only MMFs and remained there through March 2026.

Tether Q2 Attestation: Profit Up, Buffer Halved

Tether's BDO attestation for Q2 2026, released July 31, reports $1.5 billion in net operating profit, up from $1.04 billion in Q1. Total assets stood at $187.75 billion against $183.64 billion in liabilities, of which $183.62 billion corresponds to outstanding USDT. USDT issuance grew approximately $446 million during the quarter to roughly $184.6 billion, pushing USDT's share of the stablecoin market above 60%.

The headline figure masks a 50% contraction in the excess reserve buffer, which fell from $8.23 billion at the end of Q1 to $4.11 billion at the end of Q2. Tether attributes the compression primarily to mark-to-market declines in gold and Bitcoin, not operational outflows. Gold reserves grew by 14 metric tons to 146.2 tons, yet the dollar value of that position fell from $19.84 billion to $18.84 billion as spot prices dropped 15%. Bitcoin holdings rose by 1,796 coins to 98,933 BTC, while the reported dollar value declined from $6.62 billion to $5.80 billion. Secured lending exposure was reduced by approximately $2.38 billion, a 15% cut quarter-over-quarter.

Systemic Read

Two data points warrant continued monitoring. First, the liquidity delta between USDT's fiat-equivalent assets and its non-cash reserve components (gold, BTC, secured loans) remains the primary structural exposure in the largest stablecoin. Second, the NY Fed's SVB case study demonstrates that external, non-crypto shocks can force rapid reserve reallocation by issuers holding material cash deposits at a single institution. The broader capital allocation picture in adjacent markets, including recent mega-round valuations reshaping late-stage funding, mirrors the same fiat-to-risk-asset migration visible on Tether's balance sheet. Tether's ongoing Big Four audit remains incomplete; quarterly BDO attestations continue as the primary disclosure mechanism.