Huobi Growth Academy Report: On-Chain Lending Market Reaches $64.3B TVL, Aave Dominates

Summary

On-chain lending markets are rising from a niche segment of DeFi to become core infrastructure. By early 2026, the total value locked (TVL) in on-chain lending protocols reached $64.3 billion, accounting for 53.54% of DeFi’s total TVL across all sectors, making it the largest and most commercially mature subsector within the decentralized finance ecosystem. Aave, with approximately $32.9 billion in TVL, holds half of the lending market share, and its dominant position is unlikely to be challenged in the foreseeable future. However, on-chain lending is not without challenges—liquidation cascades triggering domino effects, credit defaults introducing systemic risk, and security vulnerabilities in cross-chain bridges remain the Sword of Damocles hanging over the industry. Meanwhile, a deeper transformation is underway: on-chain lending is evolving from a "leveraging tool for crypto natives" into a "compliant gateway for traditional financial institutions." The volume of RWA (real-world asset) lending has surpassed $18.5 billion, with U.S. Treasuries and government securities emerging as core collateral assets, and institutional capital inflows are reshaping the user base and risk appetite of this sector. This report systematically examines the evolution of the on-chain lending market’s definition, competitive landscape, key risks, and future trends, providing investors and industry participants with comprehensive insights. The findings indicate that the “one dominant player, many strong contenders” market structure will remain unchanged in the short term, but fixed-rate lending, compliant asset collateralization, and institutional credit evaluation will become the next battleground for on-chain lending protocols. For investors focused on DeFi infrastructure, the Aave ecosystem (Morpho, Spark), RWA lending (Ondo, Maple), and fixed-rate innovations (Notional, Pendle) represent three key value streams worthy of close attention.

On-chain lending is not a new concept. In 2020, Compound launched its liquidity mining mechanism, propelling DeFi from niche tech circles into the mainstream and marking the beginning of the "DeFi Summer." At that time, on-chain lending essentially functioned as a crypto-native high-leverage tool—users posted over-collateralized crypto assets to obtain liquidity, then deployed that liquidity into yield aggregators or liquidity provision to chase annualized returns several times higher than those in traditional finance. This model operated smoothly during bull markets, but the cascading effects of the Terra/Luna collapse and FTX bankruptcy in 2022 exposed the fragility of ultra-high collateralization ratios and chain-reaction liquidations. After two years of bear market consolidation, on-chain lending has undergone a critical transformation—from a leverage tool to a foundational infrastructure for portfolio allocation. This shift has been driven by three key factors: First, improved regulatory environments—the implementation of the MiCA framework in the EU and the SEC’s gradual recognition of ETFs—have removed some compliance barriers for traditional capital entering the on-chain world. Second, the wave of RWA tokenization—real-world assets such as U.S. Treasuries, tokenized corporate bonds, and real estate income rights—are now serving as core collateral in on-chain lending, fundamentally altering its asset structure and user demographics. Third, the evolution of interest rate市场化—progressing from purely floating rates to fixed-rate protocols (e.g., Notional, Yield Protocol) and now hybrid rate systems (e.g., Pendle)—has matured on-chain interest rate pricing mechanisms, bringing them increasingly in line with traditional financial markets.

As of early 2026, the on-chain lending market has established a clear three-tier asset structure: at the base layer, stablecoin lending dominated by USDC, DAI, and USDT represents the largest market segment with the most controllable risk, featuring typical LTVs of 80%-90%; the middle layer consists of volatile asset lending collateralized by major cryptocurrencies such as ETH and BTC, with LTVs generally capped at 50%-70% to mitigate liquidation risks from price volatility; and at the top layer, RWA-backed lending—including tokenized U.S. Treasuries (e.g., Ondo Finance’s OUSG), corporate credit (e.g., Maple Finance’s private debt), and real estate income rights—is emerging as a new growth engine for on-chain lending, particularly favored by institutional investors seeking compliant capital entry points. Geographically, the user base of on-chain lending is undergoing profound shifts: Asian markets are primarily driven by retail investors and arbitrageurs who favor high leverage and complex strategies, while markets in Europe and North America are showing clear institutionalization trends, with heightened demands for compliant custody, KYC verification, and audit transparency. This divergence in user structure directly influences the functional prioritization of protocols across regions.

The on-chain lending market exhibits a classic "one dominant player, many strong contenders" competitive landscape. Aave holds an absolute leadership position with a TVL of approximately $32.9 billion—more than ten times that of its closest competitor, Compound (~$2.6 billion TVL)—and accounts for over 50% of the total TVL in the lending sector. However, Aave’s moat does not stem from network effects or brand recognition—factors that hold little weight in the open-source protocol world—but rather from its continuous technological iteration and ecosystem expansion. From Aave V1’s variable-rate model, to V2’s introduction of credit delegation and flash loans, and then to V3’s Portal for cross-chain liquidity and isolated modes, each generation of Aave has precisely addressed key market pain points. The upcoming V4 version, expected to launch in mid-2026, will further enhance cross-chain liquidation capabilities and institutional-grade compliance frameworks. Beneath Aave’s shadow, a group of differentiated protocols are carving out their own niches. Morpho Labs has pursued a unique evolutionary path—initially serving as an optimization layer for Aave and Compound (improving capital efficiency through P2P matching), then gradually developing independent offerings such as Morpho Blue (oracle-free, governance-free lending) and Morpho Vaults (yield strategies managed by professional risk architects), transitioning from an “optimization layer” into a standalone protocol. Spark Finance, leveraging MakerDAO’s DSR (DAI Savings Rate) ecosystem, has established a solid user base in the stablecoin lending space; its technical synergy with Aave V3 makes it a key on-ramp for institutional participants.

From a technical perspective, on-chain lending protocols are diverging along three distinct paths. The first is the "liquidity aggregation" path (P2Pool), represented by protocols such as Aave, Compound, and Kamino Finance, whose core principle is to pool lenders' funds into a shared reserve, dynamically adjusting interest rates via algorithms based on utilization to achieve efficient capital allocation. This path offers the advantages of high liquidity and a streamlined user experience, but suffers from relatively lower capital efficiency, as lenders cannot directly negotiate terms with borrowers. The second is the "peer-to-peer matching" path (P2P), represented by protocols such as Notional Finance and Myso Finance, whose core principle is to enable direct matching between lenders and borrowers, delivering fixed-term, fixed-rate lending experiences. This path excels in interest rate stability but has relatively lower liquidity, making it better suited for borrowers with clear capital usage plans. The third is the "permissionless pools" path, represented by protocols such as Euler Finance (V2) and Ajna Finance, whose core principle is to delegate all risk management entirely to the market—without oracles, governance votes, or preset parameters; borrowers and lenders set their own terms and assume full risk. While this path offers a higher degree of decentralization, it also entails greater user education costs and potential smart contract risks.

The risk landscape of on-chain lending is far more complex than that of traditional finance. Unlike the banking system, on-chain protocols have no deposit insurance, no central bank as lender of last resort, and no regulatory guidance—when crises strike, liquidation mechanisms become the sole price discovery tool, and this "unyielding mechanization" often amplifies price declines during market panic. Liquidation cascades are the most typical systemic risk in on-chain lending. On March 12, 2020—“Black Thursday”—Ethereum’s price plummeted 37% in a single day, triggering massive liquidations in MakerDAO. Due to insufficient liquidity, extreme zero-price auctions occurred, with the actual liquidation price of ETH collateral reaching only 50%–60% of its market value. A similar event unfolded during the UST/LUNA collapse in May 2022, when multiple highly leveraged positions on Aave and Compound were forcibly liquidated, further intensifying market selling pressure. To mitigate the risk of liquidation cascades, protocols have adopted diverse strategies: Aave V3 introduced “Efficiency Mode,” allowing borrowers to optimize collateral efficiency for specific asset pairs; Isolation Mode confines high-risk assets to independent pools, preventing single-asset risks from spreading across the entire protocol; Ajna Finance entirely eliminated oracles, instead relying on the supply and demand dynamics between collateral and debt to auto-price assets, fully delegating price discovery to the market.

Credit default risk is the second major challenge in on-chain lending. Unlike over-collateralized “machine-enforced” models, uncollateralized or under-collateralized on-chain credit lending inherently faces evaluation difficulties. Goldfinch and Maple Finance have adopted a hybrid model combining off-chain KYC verification with on-chain settlement, using real-world credit assessment agencies (such as Blackstone Credit Partners and VanEck) to rate borrowers, thereby addressing on-chain information asymmetry. However, this “centralized endorsement” fundamentally conflicts with DeFi’s permissionless ethos. In November 2022, the crypto trading firm Orthogonal Trading defaulted, leaving approximately $36 million in non-performing debt on the Maple Finance platform—a case that exposed the fragility of on-chain credit lending: when borrowers are institutions rather than individuals, their asset allocation and risk management capabilities vary widely, casting doubt on the reliability of “credit assessments.” Deeper still, the contradiction lies in the attempt to replicate traditional finance’s credit evaluation system within a decentralized world—a path fraught with inherent tension between regulatory compliance (GDPR, KYC/AML) and on-chain anonymity. Establishing an effective credit assessment mechanism while safeguarding user privacy will remain the central challenge for the long-term development of on-chain credit lending.

Cross-chain security is the third dilemma. Aave’s Portal feature, Morpho’s cross-chain deployment, Ajna’s multi-chain expansion—leading protocols’ cross-chain strategies are extending the boundaries of on-chain lending from single chains to a multi-chain ecosystem. However, the complexity introduced by cross-chain expansion exponentially amplifies security risks. The 2022 Ronin Bridge attack ($625 million lost) and the Harmony Horizon Bridge attack ($100 million lost) revealed how cross-chain bridge vulnerabilities can propagate through the DeFi ecosystem. When Aave’s V3 protocol integrates assets from BNB Chain, Avalanche, Arbitrum, and other chains into its lending pools, these assets must first traverse cross-chain bridges for transfer—yet the security of these bridges is often weaker than that of the individual chains themselves. Compounding the issue is the reliance of cross-chain asset price oracles: if an oracle on one chain experiences anomalies or delays, positions collateralized by assets on that chain may face delayed or failed liquidations. This “barrel effect” means the overall security of an on-chain lending protocol is determined by its weakest link among all connected chains. For investors, evaluating a protocol’s cross-chain expansion strategy and bridge security is a critical dimension in assessing its long-term risk.

Despite the significant risks, the innovation engine of on-chain lending has never stopped. Between 2024 and 2026, three forces are reshaping the rules of this赛道. The first is the breakthrough in fixed-rate lending. Traditional P2Pool models are inherently floating-rate—interest rates adjust dynamically based on pool utilization, exposing borrowers to sharp increases in borrowing costs when market rates rise rapidly. For businesses and institutions seeking stable financing costs, this uncertainty is unacceptable. Notional Finance pioneered fixed-term, fixed-rate lending products, allowing borrowers to lock in interest rates for up to 12 months or longer at the time of loan origination, while lenders achieve maturity matching by purchasing accompanying yield instruments (fCash). Pendle Finance took a different approach, tokenizing yield rights—splitting an asset’s future returns into "principal tokens" (PT) and "yield tokens" (YT), enabling lenders to lock in predictable returns by purchasing PT, while transferring interest rate volatility risk to YT holders willing to speculate. Together, these two pathways are advancing the market-based pricing of interest rates on-chain.

The second force is the explosive growth of RWA lending. At the beginning of 2024, BlackRock’s tokenized fund BUIDL surpassed $5 billion in size, and Ondo Finance’s OUSG (U.S. Treasury yield token) exceeded $1 billion—these compliant assets began to be integrated into on-chain lending protocols as core collateral. Compared to the high volatility of crypto assets like ETH and BTC, U.S. Treasuries offer three key advantages: low volatility, high liquidity, and regulatory compliance, making them a “green channel” for institutional capital entering on-chain lending. Protocols such as Maple Finance, Pendle, and Flux Finance now support lending against tokenized U.S. Treasuries, enabling users to access liquidity while retaining Treasury yields. Aave has specifically designed an “Institutional Market” (Horizon Institutional Market) in its V4 version to provide on-chain lending services to borrowers registered under SEC frameworks. By early 2026, the total size of on-chain RWA lending had surpassed $18.5 billion and is projected to exceed $50 billion by 2027.

The third force is the accelerating wave of institutionalization. Unlike DeFi natives who favor anonymity, permissionless access, and complex strategies, institutional capital demands compliance, auditability, and controllable risk. RWA lending platforms such as Centrifuge and RWA.xyz have specifically designed product frameworks to meet institutional needs: KYC/AML verification, off-chain credit evaluation, custodial bank settlement, and regulatory reporting—traditional financial infrastructure is being transplanted on-chain. A deeper transformation lies in how institutional entry is reshaping the dynamics of on-chain lending. While traditional DeFi participants are accustomed to extracting protocol value through leverage, flash loans, and arbitrage strategies, institutional capital favors a conservative "hold-borrow-rehold" approach. This strategic divergence will fundamentally alter the funding structure and interest rate curves of lending protocols: more long-term locked capital, more stable interest rates, and fewer speculative liquidations. For protocols, the enduring challenge is how to serve institutional users effectively without losing retail liquidity.

For investors and professionals focused on the on-chain lending sector, the current market offers three clear avenues for value participation. The first is investment in the Aave ecosystem’s expansion. Beyond directly holding AAVE tokens, opportunities include Morpho Labs—a standalone protocol serving as an optimization layer for Aave, with Morpho Blue pioneering a new paradigm for oracle-free lending—Spark Finance—a stablecoin lending protocol deeply integrated with MakerDAO and benefiting from the expansion of the DSR ecosystem—and the new features introduced by the Aave V4 upgrade, such as institutional markets and cross-chain liquidations. Historical data shows that AAVE tokens have often delivered significant outperformance following major protocol upgrades or when Aave’s total value locked (TVL) reaches new all-time highs.

The second opportunity is a beta play in the RWA lending space. Ondo Finance (OUSG), Maple Finance (institutional credit), and Centrifuge (real-world asset financing) represent three distinct entry points into RWA. Ondo’s advantage lies in its deep integration with BlackRock’s BUIDL fund and its stable yield source from compliant U.S. Treasuries; Maple’s strength is its established credit profile with real institutional borrowers such as Coinbase Ventures and Framework Ventures; Centrifuge’s edge is its genuine demand for real-world asset financing and lower default rates. For investors seeking exposure to the RWA space, we recommend a diversified allocation strategy to mitigate black swan risks associated with any single protocol.

The third opportunity lies in the structural potential of fixed-rate innovation protocols. Pendle Finance and Notional Finance represent two distinct approaches to fixed rates: Pendle achieves "yield separation" through yield tokenization, appealing to advanced users familiar with DeFi Lego logic; Notional enables "rate locking" via traditional term loans, making it more suitable for institutional users seeking stability. Notably, Pendle’s TVL grew tenfold in 2024, rising from under $100 million to over $1 billion, and the high volatility of its YT tokens has created opportunities for arbitrage and speculative strategies.

While pursuing opportunities, three types of risks require special attention. First is smart contract risk—the large TVL of lending protocols makes them high-value targets for hackers; the 2023 attack on Euler Finance, which resulted in $197 million in losses, serves as a warning that even leading protocols may harbor undetected contract vulnerabilities. Second is concentrated liquidity risk—when a single collateral asset (such as stETH, Lido’s staked ETH) constitutes an excessively high proportion of a protocol’s TVL, extreme price volatility in that asset could trigger systemic liquidations. Third is regulatory policy risk—the “permissionless lending” functionality of on-chain lending protocols may be classified by regulators as unregistered securities offerings or illegal fundraising, particularly under regulatory frameworks like MiCA in the U.S. and EU, significantly increasing compliance costs. For allocation, it is recommended to limit on-chain lending exposure to 20%-30% of your overall DeFi portfolio and prioritize established protocols that have undergone multiple audits, maintain stable TVL, and feature transparent team backgrounds.

On-chain lending is the sector in DeFi that most closely embodies the definition of "infrastructure." Unlike perpetual swaps, which pursue extreme leverage multiples, or liquidity mining, which relies on artificial booms fueled by token incentives, or NFT markets, which face periodic asset shortages—it derives its value from genuine financing needs, stable interest income, and gradually built institutional trust. Behind the $64.3 billion in TVL are countless individual and institutional actions involving borrowing, depositing, and risk management; this grassroots financial scale effect represents DeFi’s most fundamental and powerful value proposition. Looking ahead, the investment clock for on-chain lending is shifting from the "proof-of-concept phase" into the "institutional adoption phase." The influx of RWA assets, the establishment of institutional markets, and the refinement of regulatory frameworks are transforming this sector from a playground for crypto natives into an extension of traditional finance. During this transition, striking the right balance between "DeFi-native innovation" and "institutional compliance requirements" will be critical to determining the success or failure of individual protocols. For long-term investors, the on-chain lending sector warrants strategic allocation: core positions should focus on core assets within the Aave ecosystem, while satellite positions may适度 participate in alpha opportunities from RWA and fixed-rate innovations, all while maintaining reverence for smart contract risks and disciplined position management.