Bitcoin News Today: Tether's Stability Under Fire: S&P's Warning vs. Crypto's Defense

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Wednesday, Nov 26, 2025 5:35 pm ET2min read
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Ratings downgraded Tether's USDT to "weak," citing high-risk exposure and reserve transparency concerns.

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criticized the rating as "misleading," defending its 1:1 dollar peg and $135B Treasury holdings as evidence of stability.

- The downgrade highlights regulatory tensions as USDT faces scrutiny under new laws requiring stablecoins to be fully backed by low-risk assets.

- Despite risks, USDT maintains $184B market cap and $76B daily volume, underscoring its critical role in crypto trading infrastructure.

S&P Global Ratings has downgraded Tether's

stablecoin to its lowest stability rating of "weak," citing increased exposure to high-risk assets like and persistent concerns about reserve transparency . The move marks a significant shift in the agency's assessment, as USDT-the world's largest stablecoin-now faces heightened scrutiny amid a regulatory landscape tightening around crypto assets. The downgrade reflects S&P's view that Tether's reserves may no longer fully absorb potential losses from volatile holdings, particularly Bitcoin, which , surpassing the 3.9% overcollateralization margin. This threshold, S&P warned, could leave the stablecoin undercollateralized if Bitcoin's value declines alongside other risky assets in its portfolio .

The ratings agency's analysis highlights a broader trend: Tether's reserves have seen a marked increase in high-risk exposures over the past year, including gold, secured loans, and corporate bonds, alongside Bitcoin

. These assets, S&P noted, are subject to credit, market, and interest-rate risks, compounding concerns about the stablecoin's resilience during market stress. Tether's lack of transparency on custodian creditworthiness, reserve management practices, and asset segregation further exacerbates these risks. The firm also criticized for its limited disclosure on regulatory frameworks and redemption mechanisms, which fail to align with protections seen in traditional financial systems .

Tether has pushed back against the downgrade, calling it "misleading" and arguing that the agency's framework is ill-suited for assessing digitally native money

. In a statement, the company emphasized its decade-long track record of maintaining a 1:1 peg to the U.S. dollar and highlighted its $135 billion in Treasury securities and $13 billion in annual profits as evidence of strength . CEO Paolo Ardoino dismissed the rating as part of a legacy financial model that has historically failed to predict crises, . Tether also underscored its role as critical financial infrastructure in emerging markets, where it facilitates transactions in countries like Turkey and Nigeria .

The downgrade comes as the stablecoin market faces intensifying regulatory scrutiny. The U.S. passed the GENIUS Act earlier this year, mandating stablecoins be fully backed by low-risk assets like Treasuries. While Tether claims 77% of its reserves meet these criteria,

- valued at $14 billion - raises compliance questions. Meanwhile, Bitcoin's recent 30% drawdown from its October peak about the stablecoin's exposure to crypto volatility. Despite this, USDT's market capitalization has grown to $184 billion, with daily trading volumes exceeding $76 billion, in crypto trading. S&P's decision underscores a growing divide between traditional financial institutions and crypto-native entities. While Tether defends its model as a digital dollar solution, regulators and investors are increasingly demanding clearer safeguards. The agency's warning serves as a cautionary note for the stablecoin sector, where stability is paramount yet increasingly complex to achieve .