Tether's Excess Reserves Drop 50% to $4.11B as First-Half Comprehensive Result Turns Deeply Negative

Tether's latest reserve attestation shows its financial buffer shrinking just as U.S. lawmakers intensify debate over stablecoin rules. Excess reserves fell to $4.11 billion as of June 30 from a record $8.23 billion at the end of March, a 50% decline first highlighted by WuBlockchain. The reduction trims a layer of protection that many traders and on-chain protocols view as critical. Operationally, Tether reported a solid quarter, posting $1.5 billion in net operating profit for Q2. The broader picture looks weaker. The company's comprehensive result for the first six months of the year, which includes unrealized gains and losses, came in at negative $3.17 billion. With Q1 net profit previously reported at about $1.04 billion, the figures imply a comprehensive quarterly loss that exceeded $4 billion. Tether did not provide a detailed breakdown, citing unrealized losses without specifying where the paper losses originated. Attention is again turning to the composition and liquidity of Tether's backing. The issuer has increased its allocation to U.S. Treasury bills over the past two years, but the structure of those holdings and their sensitivity to interest-rate moves remain unclear. As tokenized real-world assets on public blockchains have recently topped $20 billion, investors have been pushing for more granular reserve disclosures. Rivals such as Circle publish detailed monthly reserve breakdowns, while Tether's attestation offers only high-level categories, leaving analysts to speculate whether the unrealized hit stemmed from bond markdowns, private investments, or other exposures. Excess reserves function as a shock absorber. At $4.11 billion, the buffer is still large in absolute terms, but the pace of decline has heightened scrutiny. Further mark-to-market losses or a wave of redemptions could pressure the remaining cushion more quickly than a year ago. With USDT's market capitalization above $80 billion, even a small loss of confidence can have outsized market effects. The attestation underscores a recurring tension: strong operating profit alongside a sharply negative comprehensive result. Unrealized losses can reverse, but the scale this period stands out. Tether has not itemized the $4 billion-plus swing or identified which assets drove the markdowns. That level of opacity around a quasi-systemic stablecoin is likely to draw regulatory interest, especially after excess reserves were cut in half in a single quarter. Calls for a full audit are expected to intensify. The divergence between reported profit and comprehensive loss also raises practical questions for exchanges and institutional users that depend on USDT for settlement. If the reserve cushion keeps shrinking, incentives may grow to diversify into other stablecoins or tokenized fiat alternatives. The reserve moves come as U.S. legislators work to finalize stablecoin legislation that could introduce a federal framework for issuers. Proposals circulating in the Senate include one-to-one backing requirements, regular attestations, and in some cases full audits. For offshore-domiciled Tether, any new U.S. regime would likely require a significant upgrade in disclosure. USDT has continued to trade close to its dollar peg and redemptions have not surged, suggesting the system has held despite the non-operating loss. Still, the 50% drop in excess reserves combined with limited detail on the comprehensive loss shifts the debate from theoretical transparency to near-term risk. The next attestation is expected to face much closer scrutiny.