Authorized Participant (AP)

What Is an Authorized Participant?

An authorized participant (AP) is a large financial institution, typically a major bank or market-making firm, that has signed a formal agreement with an ETF's distributor granting it the exclusive right to create and redeem ETF shares directly with the fund. Ordinary investors cannot do this: they buy and sell ETF shares on the secondary market like any other stock. APs operate behind the scenes, ensuring the supply of ETF shares expands and contracts to match demand.

Think of APs as wholesalers. Retail investors trade ETF shares on the open exchange, but APs transact in bulk directly with the issuer, assembling or disassembling large blocks of shares called "creation units" (typically 25,000 to 50,000 shares per unit). This wholesale layer is what makes ETFs work: without APs, there would be no mechanism to keep the ETF price tethered to the value of its underlying assets.

To become an AP, a firm must be a registered broker-dealer under the Securities Exchange Act of 1934, maintain FINRA membership in good standing, participate in the Depository Trust Company (DTC) for settlement, and execute a formal Participant Agreement with the ETF's sponsor.

How It Works

The AP mechanism centers on two processes: creation and redemption. These are the only ways new ETF shares enter or leave the market.

Creation Process

When an AP wants to create new ETF shares, it assembles a "creation basket" of the underlying assets that match the ETF's portfolio composition. The AP delivers this basket to the ETF issuer and receives a creation unit of ETF shares in return. The AP can then sell these shares on the open exchange.

1. The AP acquires the underlying assets on the open market
2. The AP delivers the basket to the ETF issuer
3. The issuer mints a creation unit of new ETF shares
4. The AP receives the shares and can sell them on the exchange

Redemption Process

Redemption works in reverse. The AP buys a creation unit's worth of ETF shares on the exchange, delivers them to the issuer, and receives the underlying assets in return. The ETF shares are then cancelled, reducing total supply.

In-Kind vs. Cash

There are two models for creation and redemption:

• In-kind: the AP delivers or receives the actual underlying assets (stocks, bonds, gold, or bitcoin). This is more tax-efficient, minimizes transaction costs, and reduces market impact. Most traditional ETFs use this model.
• Cash: the AP delivers cash, and the ETF issuer handles buying or selling the underlying assets. This adds operational friction, conversion fees, and potential tax events.

The Arbitrage Mechanism

The creation/redemption process creates a built-in arbitrage opportunity that keeps ETF prices close to NAV:

• When the ETF trades at a premium (market price above NAV): the AP buys the cheaper underlying assets, delivers them to the issuer, receives new ETF shares, and sells them at the higher market price. This increases share supply and pushes the ETF price back down toward NAV.
• When the ETF trades at a discount (market price below NAV): the AP buys cheap ETF shares on the exchange, redeems them with the issuer for the more valuable underlying assets, and sells those assets. This reduces share supply and pushes the ETF price back up toward NAV.

The AP profits from the spread between the ETF market price and the NAV. This profit motive ensures deviations are usually small and short-lived. For well-functioning ETFs with active APs, premiums and discounts rarely exceed a few basis points.

Authorized Participants in Bitcoin ETFs

The approval of U.S. spot Bitcoin ETFs in January 2024 introduced a new class of AP challenges. Unlike traditional equity ETFs where APs handle familiar securities, Bitcoin ETF APs must navigate the intersection of traditional finance infrastructure and crypto-native settlement.

Key APs for Bitcoin Spot ETFs

A small group of firms dominates AP activity across Bitcoin ETFs. Jane Street Capital and Virtu Americas serve as APs for nearly every U.S. spot Bitcoin ETF. BlackRock's iShares Bitcoin Trust (IBIT), the largest Bitcoin ETF by assets, expanded from two initial APs to nine by mid-2024, adding Goldman Sachs, Citigroup, Citadel Securities, UBS, and others. By contrast, smaller Bitcoin ETFs may have only two or three registered APs.

Cash-Only Era (January 2024 to July 2025)

When the SEC first approved spot Bitcoin ETFs in January 2024, it required all creation and redemption to use cash only. APs could not deliver or receive actual bitcoin. Instead, the AP would send cash to the ETF issuer, who would then purchase BTC through the market. This added friction: conversion fees eroded returns, settlement was slower, and tracking error widened compared to what in-kind transactions could achieve.

In-Kind Approval (July 2025)

On July 29, 2025, the SEC voted to permit in-kind creations and redemptions for spot Bitcoin and Ethereum ETPs. Exchanges including Nasdaq, Cboe BZX, and NYSE Arca received approval for the proposed rule changes. This brought crypto ETFs in line with how traditional commodity ETFs (gold, silver) have always operated: APs can now deliver or receive the actual underlying asset directly.

The SEC cited "efficiencies and cost savings" as justification, including fewer conversion fees, faster rebalancing, and tighter NAV tracking. For investors, in-kind redemption also offers potential tax advantages because the fund does not need to sell assets (and realize gains) to meet redemptions.

Unique Challenges for Bitcoin ETF APs

Even with in-kind approval, Bitcoin ETF APs face operational hurdles that do not exist in traditional markets:

• Market hours mismatch: Bitcoin trades 24/7/365, but ETF shares only trade during stock exchange hours (9:30 AM to 4:00 PM ET). BTC price can move significantly overnight or on weekends, creating gaps at market open and wider premiums or discounts.
• Custodial complexity: APs must coordinate with specialized crypto custodians. Most U.S. Bitcoin ETFs use Coinbase Custody, with Fidelity Digital Assets and others serving select funds. This custodial concentration has been flagged as a potential systemic risk.
• Settlement differences: Bitcoin on-chain settlement takes roughly 10 minutes per confirmation, but institutional custody transfers may require multiple confirmations. This differs from the T+1 settlement cycle used in traditional securities.
• Regulatory overlay: APs must comply with both traditional securities regulation (SEC, FINRA) and crypto-specific requirements including AML/KYC for digital asset transactions.

Why AP Participation Matters

The number and quality of APs serving a fund directly affects the investor experience. More active APs generally means tighter bid-ask spreads, lower trading costs, and more resilient pricing during volatile periods.

Spreads and Liquidity

Research shows that large ETFs (over $790 million in AUM) average about seven active APs that also serve as registered market makers, while smaller ETFs may have only three. More APs competing to arbitrage premiums and discounts means tighter spreads and better price discovery for investors. This is one reason BlackRock's IBIT, with nine APs, consistently trades with some of the tightest spreads in the Bitcoin ETF space.

Tracking Error

APs directly influence how closely an ETF tracks its benchmark or NAV. When APs are active, deviations are corrected quickly. When APs step back (due to market stress, operational constraints, or insufficient profit incentive), tracking error widens. During the March 2020 COVID sell-off, several bond ETFs traded at significant discounts to NAV because APs reduced their activity in the face of extreme volatility.

Market Stress Resilience

During periods of extreme volatility, APs may reduce or halt creation/redemption activity. The more APs serving a fund, the more likely at least some will remain active during stress. For Bitcoin ETFs, this is particularly relevant given crypto's history of sharp drawdowns: multiple competing APs provide redundancy that a single-AP fund cannot match.

Risks and Considerations

AP Concentration Risk

Many Bitcoin ETFs rely heavily on the same small group of APs. Jane Street and Virtu Americas appear across nearly every U.S. spot Bitcoin ETF. If these firms were to reduce activity simultaneously (due to regulatory pressure, operational issues, or risk management decisions), the entire Bitcoin ETF market could experience wider spreads and NAV deviations.

Active vs. Registered APs

A fund may list several registered APs, but only a subset actively creates and redeems shares on a regular basis. The number of listed APs can be misleading: what matters is how many are actively arbitraging. An ETF with nine registered APs where only two are active offers little advantage over an ETF with three active APs.

Custodial Concentration

The Bitcoin ETF ecosystem relies heavily on a small number of crypto custodians. Coinbase Custody serves the majority of U.S. spot Bitcoin ETFs, holding a large share of all ETF-held BTC. An operational failure, security breach, or regulatory action against a dominant custodian could disrupt AP activity across multiple funds simultaneously.

Evolving Regulatory Landscape

The rules governing AP activity for crypto ETFs continue to evolve. The shift from cash-only to in-kind creation/redemption in July 2025 fundamentally changed the AP workflow. Future regulatory changes could further alter how APs interact with digital asset funds, affecting everything from settlement timelines to capital requirements.

Authorized Participants and the Broader Market

The AP mechanism is not unique to Bitcoin ETFs: it underpins the entire $10+ trillion ETF industry. But Bitcoin ETFs have stress-tested the model in new ways, forcing traditional financial institutions to build crypto-native operational capabilities.

As institutional adoption of Bitcoin ETFs grows, the AP ecosystem is likely to expand. More APs entering the space means deeper liquidity, tighter spreads, and greater competition: all of which benefit end investors. The transition to in-kind creation and redemption removes a major friction point, making it easier for traditional APs to participate without needing to manage cash-to-crypto conversion risk themselves.

For the broader crypto ecosystem, the AP model demonstrates how traditional finance infrastructure can be adapted to serve digital assets. The same arbitrage mechanics that keep a gold ETF priced correctly now operate for bitcoin, bridging the gap between crypto-native markets and regulated securities exchanges.

This glossary entry is for informational purposes only and does not constitute financial or investment advice. Always do your own research before using any protocol or technology.