Aave Founder’s In-Depth Analysis of V4: The $12 Trillion Securities Financing Market Is Being Migrated to the Blockchain, Layer by Layer
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Aave Founder’s In-Depth Analysis of V4: The $12 Trillion Securities Financing Market Is Being Migrated to the Blockchain, Layer by Layer
From securities-backed lending to repurchase agreements (repos) and then to securities lending, each step uses protocols to compress away the rents traditionally captured by intermediaries.
Navigating Web3 tides with focused insightsAuthor: Stani Kulechov
Translated by TechFlow
TechFlow Intro: Securities financing is one of Wall Street’s largest yet least-known markets—its U.S. repurchase (repo) market alone carries ~$12.6 trillion in daily exposure. Aave V4’s hub-and-spoke architecture is uniquely positioned to absorb the onchain migration demand of this multi-trillion-dollar market. From securities-backed lending to repo to securities lending, every step eliminates traditional intermediaries’ rent via protocol automation.
Securities financing is among the largest markets almost entirely ignored outside Wall Street—and it has already begun moving onchain. Securities-backed lending is a multi-trillion-dollar business. The U.S. repo market alone sees ~$12.6 trillion in daily exposure; margin lending has hit a record $1.3 trillion; and securities-backed loans in wealth management add another $400+ billion on top. The separately tracked securities lending market currently has ~$4.6 trillion in assets on loan and generated a record $15 billion in revenue in 2025. Virtually none of these activities touch blockchain today—that’s the opportunity.
The best way to bring it onchain is to get the market structure right. Between borrowers and lenders sit layers of custodians, lending agents, third-party collateral managers, prime brokers, and clearinghouses. Each layer extracts fees, adds settlement latency, and obscures information. Collateral gets trapped in bilateral relationships; rehypothecation chains extend beyond visibility; when problems arise, no one can see why for days. Every layer creates work, friction, and cost.
Improving this market structure is precisely what Aave V4 aims to do—and onchain infrastructure has now reached scale. The stablecoin market has surpassed $322 billion; Aave locks ~$23 billion in liquidity; GHO, Aave’s native dollar stablecoin, is live; and Aave Horizon’s total deposits have exceeded $500 million, powering RWA-backed lending. The cash leg, liquidity, and collateral pipeline are all now in place.
Why V4?
V4 splits the system into a liquidity hub and spokes. The hub is a deep, shared liquidity pool; the spokes are modular venues (i.e., markets) plugged into it—each with its own risk parameters, asset scope, and rules. This single architectural choice maps nearly perfectly onto how the securities financing market wants to be organized: shared underlying liquidity, segmented compliant venues at the top.
Three core workflows run across this structure—and together, they constitute the market.
Securities-Backed Lending (SBL)
Tokenized securities are deposited as collateral into a spoke, using conservative, asset-specific haircut rates. Owners borrow GHO or stablecoins without selling. Positions remain transparent, haircuts explicit, and liquidations automated—not manual back-office processes. Owners retain upside potential while unlocking liquidity; bank balance sheets are freed up. In U.S. wealth management alone, this represents a $400 billion book—still significantly underserved. As real-world assets (RWAs) approach $16 trillion in tokenization by the 2030s, every such asset becomes instantly borrowable collateral. Horizon’s institutional RWA deposits have already surpassed $500 million—demand is clear. For end users, liquidity arrives in minutes, secured by tokenized assets—not through days-long bilateral credit negotiations. Rates are transparent and set by the deep shared pool.
Repo
This is the giant. Repo is short-term, collateralized cash lending—primarily against Treasuries—with ~$12.6 trillion in daily exposure in the U.S. market alone. Onchain, repo means pledging tokenized securities as collateral to borrow stablecoin cash from a low-risk hub—the exact use case V4 enables. Atomic delivery-versus-payment (DvP) eliminates settlement failure; terms are programmable and operate 7×24—not bound to banking calendars. Roughly $5 trillion in opaque, bilaterally cleared, non-centrally cleared repo becomes transparent and continuously margined. The market most in need of clean settlement and real-time collateral visibility is precisely where V4 delivers best.
Securities Lending
Tokenized securities themselves become borrowable assets within the hub. Short sellers and settlement coverage providers pay borrowing fees that flow directly back to asset owners. The lending agent’s functions—matching, pricing, and collateral management—collapse into the protocol. This is where the fee pool resides: $15 billion in revenue in 2025, against tens of trillions in lendable supply. Today, lending agents capture ~20–30% of that revenue—billions annually siphoned off before asset owners see a penny. Routing the same workflow through the protocol compresses that takeout near zero, returning the spread to owners.
A Market Structure Proposal
There are two layout options—both sharing the same spokes. They differ only in how underlying liquidity is organized.
Option A: Single Shared Liquidity Hub
A single liquidity hub acts as the settlement and collateral core. It holds the cash leg, maintains unified accounting per position, prices collateral via oracles, and concentrates maximum depth in one place—shared across all upper-layer venues.
Specialized spokes sit around it—each a venue with its own rulebook but identical underlying liquidity. The SBL spoke accepts tokenized securities as collateral, allowing owners to draw stablecoins or GHO against conservative, asset-class-specific haircuts. The SBL spoke can itself be subdivided into multiple spokes by risk tier. The repo spoke handles short-term cash lending against high-quality securities, enabling atomic settlement and continuous margining. The securities lending spoke lists tokenized securities as borrowable assets, directing borrowing fees to their owners.
This layout’s advantage is depth: one pool means deepest liquidity and simplest accounting. Its limitation is that risk resides in one place—so isolation must be engineered at the spoke layer, not structurally.
Option B: Multiple Hubs by Asset Class & Risk Tier
The alternative is to run multiple liquidity hubs—each constrained to a specific asset class and risk tier—with spokes connecting to multiple hubs simultaneously. A low-risk Treasury hub applies tight haircuts, naturally absorbing most repo activity; a medium-risk credit and money-market hub serves other needs; a higher-risk equity hub applies wider haircuts and stricter liquidation thresholds—each hub pricing and isolating its own risk.
Spokes automatically route across these hubs. The repo spoke sends Treasury collateral to the Treasury hub; the SBL spoke routes an equity basket to the equity hub. To the user, it appears as one venue—while the protocol places each position into the pool whose parameters best match it.
This delivers three things. First, risk isolation becomes structural—not configurational—so an equity shock can be contained without spilling into the Treasury pool supporting repo. Second, pricing becomes more precise: each hub sets rates and haircuts for one risk tier, rather than mixing tiers. Third, regulatory separation becomes easier: one hub can be confined to a single jurisdictional regime, while spokes still aggregate experiences across regimes. The trade-off is shallower depth per hub—but because spokes pull liquidity across multiple hubs, total liquidity and composability are preserved. Credit lines between hubs and specific spokes can boost liquidity flow while retaining capped risk isolation exposure.
The practical path is a spectrum—not a binary choice. Start unified to gain depth and simplicity, then upgrade to category- and risk-tiered hubs as collateral types expand and fragmentation becomes worthwhile. Either way, the same spokes persist.
Roles Across Both Models
Companies once scattered across layers become parameters and participants. Lending agents become risk managers tuning hub and spoke parameters; third-party collateral managers become the hub’s bookkeeping and settlement engine (i.e., the protocol itself); prime brokers and clearinghouses become operators of permissioned venues; custodians’ ledgers become the chain itself.
Structural Change
Functions previously housed across different firms now reside in protocol roles—so work remains, but rent disappears. Collateral, once locked in bilateral agreements, now goes to work: the same asset can support exposure across every hub for which it qualifies—no pre-funded inventory sitting idle at each counterparty, no float draining yield. Permissioned spokes—or jurisdictionally constrained hubs—enforce KYC, jurisdictional, and eligible-asset rules at the edge, while still drawing from shared liquidity. Regulated entities thus get venues compliant with their rules—without fragmenting the order book relied upon by the rest of the market.
Settlement happens at a fundamentally different speed. Traditional securities markets in the U.S. still settle T+1; much of Europe settles T+2—and the industry’s recent move toward T+1 alone cost participants ~$30 billion to implement. V4 enables atomic, 7×24 settlement—zero failures, marginal cost near zero. Reconciliation, which takes days in traditional finance, becomes a single onchain state read.
What It Unlocks
Gains are concrete for asset owners, borrowers, and cash lenders alike. The addressable market spans trillions: U.S. repo daily exposure ~$12.6 trillion; margin lending $1.3 trillion; securities lending $4.6 trillion outstanding—all resting on collateral that will reach $16 trillion in tokenization by the 2030s.
Gains are retained—not extracted—because the 20–30% of securities lending revenue that agents currently skim flows back to asset owners. Settlement no longer fails, because atomic, 7×24 DvP replaces T+1/T+2 cycles and intraday failures plaguing bilateral repo. Capital works harder: pooled hub liquidity ends idle pre-funded inventory, letting the same collateral flow across venues. Risk becomes visible and controllable: positions, haircuts, and rehypothecation are real-time and transparent; category-specific hubs contain shocks at origin. Access takes minutes—so owners can borrow against tokenized holdings on demand, at transparent, market-set rates—not days-long bilateral credit negotiations.
Conclusion
Securities financing has long awaited a settlement and collateral layer that operates without stacked intermediaries. Securities-backed lending, repo, and securities lending are three sides of the same balance sheet—you pledge what you hold to borrow cash, finance short-term, or lend out to earn yield. Together, they move tens of trillions of dollars through a pipe that extracts billions in fees and takes days to settle.
V4 hosts all three—whether via a single deep hub or a grid of category- and risk-tiered hubs routed by spokes. Liquidity, stablecoin cash legs, and institutional pipelines are live. The pipe has finally been upgraded—value flows to asset owners; markets dependent on it run in the trillions. This is the market Aave can capture.
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