Stablecoins are a type of cryptocurrency pegged to fiat currencies (such as the US dollar) or other assets. Their primary aim is to mitigate price volatility and provide a relatively stable medium of exchange. Market capitalization, or market cap, represents the total value of a stablecoin in circulation multiplied by its current price, indicating its size and influence within the market.
As of August 2025, global stablecoin market capitalization stands at approximately $280 billion, which accounts for approximately 6.8% of the entire cryptocurrency market. Data may vary slightly by source; DefiLlama reports a figure of around $271 billion. Overall, the stablecoin market continues to experience rapid growth.
Tether (USDT) remains the leading stablecoin by market capitalization, with an estimated $146 billion market cap at the start of 2025. Due to its significant liquidity and cross-chain compatibility, USDT is the preferred stablecoin for crypto trading and payments.
USD Coin (USDC), issued by Circle, has also shown robust growth in its market capitalization. In Q2 2025, USDC’s market cap hit $61.3 billion, rising to $65.2 billion by August 10. Circle’s quarterly revenue increased 53% year-over-year to $658 million, demonstrating strong demand for stablecoins.
USDT and USDC together account for nearly 90% of the stablecoin market share, and their performance significantly affects the overall market capitalization of stablecoins.
The European Central Bank has cautioned that stablecoins could threaten euro sovereignty, calling for tighter regulatory oversight. J.P. Morgan has lowered its outlook for stablecoin market growth, citing uncertainty regarding future growth. Meanwhile, U.S. legislation such as the GENIUS Act is helping establish a more defined compliance framework for stablecoins.
Stablecoin market capitalization may continue to rise, but the growth rate is expected to slow. Regulatory developments, reserve transparency, and the evolution of use cases will be central to this trajectory. Investors should closely monitor stablecoin reserve transparency and compliance risks, and avoid speculative buying.
Stablecoin market capitalization has reached hundreds of billions of dollars, with USDT and USDC dominating the field. Given the complex regulatory landscape and emerging market risks, investors should approach stablecoin growth opportunities with caution, prioritize compliance and transparency, and implement solid risk management strategies.