Aero

AeroPool is a Solana liquid staking protocol that routes delegated stake to validators who actively contribute to the ecosystem, issuing aeroSOL as a tradeable receipt token while supporting decentralization over raw yield maximization.

The Problem It Solves

Solana's staking economy carries a structural tension: stake-as-a-service pools optimized for maximum APY tend to concentrate delegation among a small group of large, low-commission validators. This concentrates network weight, depresses commissions for smaller operators, and leaves the validators most responsible for open-source tooling, community education, and client-diversity experiments chronically underfunded. AeroPool was built by Phase Labs to invert that incentive, treating stake as a resource that can deliberately flow toward ecosystem builders rather than simply toward yield.

Core Mechanism

Users deposit SOL through AeroPool's on-chain program (address aero2ePURjuEgLKTzcUmF6RypBncBGd7pMUYCoSsVJ6) and receive aeroSOL, an SPL-standard liquid staking token. aeroSOL accrues staking rewards in the same way as other Solana LSTs — its exchange rate against SOL increases each epoch as validator rewards flow into the pool — and can be freely traded or used in DeFi while the underlying stake remains active.

The protocol's differentiating logic sits in its delegation engine. Rather than routing all stake to the highest-APY validators, AeroPool operates a four-tier delegation system that assigns base allocations based on a validator's ecosystem role:

• Tier 1 — 15,000 SOL + residual stake: Early-stage validators, bootstrapped startups, and ecosystem infrastructure projects. No minimum stake threshold; admission is at the discretion of the Aero team.
• Tier 2 — 10,000 SOL + residual stake: Newer operators and Solana Foundation Delegation Program (SFDP) participants who have not yet reached their match cap, targeting validators below approximately 127,000 SOL. Members are expected to engage with the community and contribute improvement suggestions.
• Tier 3 — 5,000 SOL: Established ecosystem contributors with an ideal cap of roughly 220,000 SOL (the SFDP 100% match ceiling). Intended as a long-term home for active participants.
• Tier 4 — 2,500 SOL: Entry-level support for validators serving geographic decentralization, public-goods initiatives, or broader network resilience goals.

Residual stake — whatever remains after base allocations are satisfied — is divided equally between Tier 1 and Tier 2 validators, concentrating incremental support on the earliest-stage operators. Tier rankings are reviewed every other Friday, keeping the distribution responsive to validator behavior without constant churn.

Validator admission requires a 5% staking commission and 10% MEV commission. Applications are reviewed weekly, and the team retains discretion to factor in uptime, software version currency, and recent on-chain performance alongside contribution criteria.

Validator Selection Philosophy

What distinguishes AeroPool from yield-first pools is the explicit inclusion of validators that standard algorithms would filter out. Higher commission rates, smaller stake bases, and early-stage operational histories are not disqualifying — provided the validator's team is building something for the network. Examples cited in Phase Labs documentation include open-source developers, community educators such as GREED Academy, and validators experimenting with alternative consensus clients. This approach accepts some yield drag in exchange for a broader and more contribution-diverse validator set.

By the time of third-party coverage, AeroPool had grown to approximately 151 million USD in total value locked, distributing that stake across more than 140 validators — a scale that makes its ecosystem-first delegation policy materially impactful for the operators it supports.

aeroSOL Token

aeroSOL is an SPL token representing a claim on AeroPool's SOL reserves. Its mechanics follow the standard Solana stake-pool pattern: the exchange rate drifts upward each epoch as staking rewards accumulate, so holders capture yield by holding rather than through explicit reward claims. The token can be freely traded or used in Solana DeFi protocols where it is supported.

AeroPool operates within the Sanctum LST ecosystem, which provides secondary liquidity infrastructure for aeroSOL and allows holders to swap out of the token without waiting for the native unstake cooldown.

Team and Background

AeroPool is a product of Phase Labs, a Solana infrastructure company founded in 2021. Phase Labs describes itself as focused on validators, stake pools, and Solana infrastructure, and the organization has received Solana Foundation grants and won five ecosystem hackathons. The Aero Pool sits alongside Phase Labs other products — Netrunner and Sentinel — as part of an integrated infrastructure suite.

The protocol has a formal relationship with both the Solana Foundation and Sanctum. The Solana Foundation alignment connects AeroPool to the official SFDP framework, while Sanctum provides the LST liquidity layer that makes aeroSOL practical for DeFi users.

Ecosystem Fit

Solana's staking architecture allows any liquid staking token to compete for delegation on equal technical footing, which makes product differentiation a question of strategy rather than protocol access. AeroPool occupies a specific niche: delegators who want their staked SOL to fund ecosystem development rather than simply earn the highest available rate. The pool's position on Sanctum makes it accessible to users already navigating the LST ecosystem, and its Solana Foundation alignment keeps it connected to the formal validator support pipeline.

For smaller validators, AeroPool offers a path to sustainable stake that does not depend on winning a pure APY race — instead rewarding the builders, educators, and experimenters that the network's long-term health depends on.

Audit and Security Status

No public security audit has been identified in available sources for AeroPool's on-chain program. The pool uses the standard Solana stake-pool program architecture. Prospective stakers should verify current audit status through Phase Labs official documentation before depositing.