# ExchangiFi > The Section 351 ETF Exchange Marketplace ## Posts - [ExchangiFi Publishes New Research Sizing the Section 351 Opportunity at $5.0 Trillion](https://exchangifi.com/exchangifi-publishes-new-research-sizing-the-section-351-opportunity-at-5-0-trillion/): ExchangiFi has released a new institutional white paper measuring the market for Section 351 tax-deferred ETF conversions. The finding is simple and large. We estimate $5.0 trillion in U.S. taxable equity assets are structurally suited to convert into ETF wrappers without triggering immediate capital gains tax. The starting point is the Federal Reserve’s Z.1 financial accounts. American households hold about $57.7 trillion in corporate equities and fund shares. Roughly 87% of that wealth belongs to the top 10% of households. Most of it is old stock, bought cheap and worth far more now. For a top-bracket California investor, selling can cost […] - [Section 351 Exchange Financial Advisor Guide](https://exchangifi.com/section-351-exchange-financial-advisor-guide/): For financial advisors and RIAs, a Section 351 exchange can look like a powerful way to move appreciated client portfolios into an ETF without triggering immediate gain. The opportunity is real, but the rules are narrow. A successful transaction depends on control, asset eligibility, diversification, documentation, and client consent. This section 351 exchange financial advisor guide explains the practical rules advisors need to understand before recommending an ETF conversion strategy. We cover the core tax requirements, the 25 and 50 diversification test, eligible and ineligible assets, account aggregation, operational records, and advisor responsibilities. We also flag the places where the answer […] - [The Tax Hack Wall Street Is Finally Paying Attention To](https://exchangifi.com/the-tax-hack-wall-street-is-finally-paying-attention-to/): The Rise of Section 351 ETF Exchanges in Wealth Management Consider the classic tax problem. You buy a stock for $10. It goes to $1,000. You should sell and diversify, because owning a single stock that’s gone up 100x your portfolio is out of balance, but selling triggers capital gains tax, so you don’t sell. You sit there, concentrated, because writing a check to the IRS feels worse than concentration risk. This is the “lock-in effect,” and it’s how people end up holding Tesla forever. Enter Section 351 of the tax code. Section 351 says that if you contribute property to […] - [How Wealth Advisors Are Using Section 351 Exchanges](https://exchangifi.com/how-wealth-adivsors-are-using-section-351-exchanges/): Managing concentrated stock positions is one of the biggest challenges facing wealth advisors today. How do you help clients diversify without triggering a massive tax event? I recently sat down with Chris Latham to discuss exactly that. In this interview, we break down the mechanics of a Section 351 exchange and why it is becoming an essential tool for the wealth advisor community. In this video, we cover: If you are looking for new ways to protect your clients’ wealth, this conversation is for you. - [5 Reasons Investors Use a Section 351 Exchange](https://exchangifi.com/5-reasons-investors-use-section-351-exchange/): For investors sitting on highly appreciated assets, a Section 351 exchange is a powerful—but often overlooked—tool. It enables investors to contribute assets in-kind to a newly formed Exchange-Traded Fund (ETF), deferring capital gains taxes while gaining the flexibility and tax efficiency of the ETF structure. Here are the five most common reasons investors use this strategy. 1. Diversifying Legacy Position with Low Cost Basis Many investors hold long-time winners with extremely low cost basis. These positions have created wealth—but selling them creates a large, immediate tax bill. The Solution: Contribute the stock into an ETF through a 351 exchange. The Benefit: […] - [ETF Strategies Likely to Attract 351 Exchange Assets](https://exchangifi.com/etf-strategies-likely-to-attract-351-exchange-assets/): In today’s market, where many long-term investors hold highly appreciated stock portfolios, the prospect of selling to diversify is often met with the potential of a massive capital gains tax bill. A solution has emerged in the form of the Section 351 ETF Exchange, an innovative application of the U.S. tax code that enables investors to exchange their appreciated assets for shares in a new Exchange Traded Fund (ETF) on a tax-deferred basis. For an ETF issuer looking to capitalize on this growing demand and attract significant assets through a 351 exchange, the design of the new fund must be meticulously […] - [Avoid Forced Capital Gains: Using a Section 351 ETF Exchange Before a Take-Private Deal](https://exchangifi.com/using-section-351-etf-exchange-before-take-private-deal-forced-capital-gains/): Imagine holding a stock for years, watching it appreciate 300%, only to see that position disappear from your brokerage account because a private equity firm decided to take the company private. You get a cash premium for the shares, but when a public company is acquired for cash, or a mix of cash and stock, investors often face an unwelcome surprise: an immediate, forced realization of capital gains. There’s a sophisticated strategy to avoid this tax hit: the Section 351 Exchange into a newly formed Exchange-Traded Fund (ETF). This approach allows investors to defer capital gains, keeping their money compounding, instead […] - [The Biggest ETF Innovation You've Never Heard Of](https://exchangifi.com/biggest-etf-innovation-you-have-never-heard-of-351-exchange/): The next major wave in ETFs won’t come from AI funds or thematic plays. It’s already here—and it’s hiding in the tax code. Section 351 exchanges—a process using a specific tax rule—are transforming how ETFs launch and scale, and we’re just getting started. The Problem Worth Trillions Investors hold trillions (yes, trillions!) in appreciated stocks. Moving that wealth into tax-efficient ETF structures has always meant one thing: selling first, triggering massive capital gains taxes. Until now. How 351 Exchanges Change Everything Section 351 lets investors swap appreciated stocks directly for ETF shares—no sale, no immediate tax bill. The mechanics: Under IRS […] - [The Top 10% Added $5 Trillion in Wealth This Year — Mostly from Stocks](https://exchangifi.com/top-10-percent-added-5-trillion-in-wealth-mostly-from-stocks/): Summary: 2025 has been another banner year for the wealthy, powered by a stock market that continues to outpace the broader economy. As the top 10% see their fortunes swell, a new wave of tax-efficient investment strategies — from ETF conversions to exchange structures — is emerging to manage, and in some cases, defer the tax implications of those historic gains. America’s wealth gap continues to widen as soaring equity markets drive record gains for the richest households. According to new Federal Reserve data, the top 10% of Americans added roughly $5 trillion to their wealth in the second quarter alone, […] - [ETF Rebalancing After a 351 Exchange](https://exchangifi.com/etf-rebalancing-after-351-exchange/): The Challenge When new ETFs launch through Section 351 exchanges, they inherit a mix of securities from separately managed accounts that may not match their investment goals. These “seed assets” need to be gradually replaced with securities that fit the fund’s strategy. Timeline: 1-12 Months Most ETFs take between 1 to 12 months to fully rebalance. During this period, investors may see tracking error as the fund’s performance differs from its benchmark due to holding mismatched assets. Two Rebalancing Approaches Fast Track: “Heartbeat Trades” Some ETFs can swap out 40%+ of their holdings within days using sophisticated tax-efficient transactions called heartbeat […] - [From Concentrated Stocks to Diversified ETFs: The Tax-Smart Way](https://exchangifi.com/from-concentrated-stocks-to-diversified-etfs-the-tax-smart-way-351-exchange/): How 351 tax-deferred exchanges help investors diversify without the capital gains hit The Challenge Every Concentrated Stock Investor Faces Picture this: You’ve held onto company stock for years, watching it appreciate significantly. Now you want to diversify your portfolio, but there’s a problem—selling would trigger a massive capital gains tax bill. What if there was a way to convert that concentrated position into a diversified ETF portfolio without paying taxes upfront? That’s exactly what ExchangiFi founder Matt Bucklin explains in his recent appearance on The Crux podcast with Eben Burr, President of Toews Asset Management. What Are 351 Tax-Deferred Exchanges? Think […] - [ETF Look-Through Rule in Section 351 Exchanges Explained](https://exchangifi.com/etf-look-through-rule-section-351-exchanges-explained/): The IRS look-through rule makes Section 351 tax-deferred exchanges easier when your portfolio includes diversified ETFs. What Is Section 351? Section 351 allows investors to transfer assets to a corporation (including ETFs) without immediate tax consequences. However, contributed assets must pass the 25/50 diversification test to qualify. The 25/50 Diversification Test For the Section 351 tax deferral, your portfolio must meet these requirements: This typically requires 11+ distinct positions and potentially 15-20 different issuers, depending on concentration levels. How the ETF Look-Through Rule Works When you contribute ETF shares, the IRS doesn’t count each ETF as one position. Instead, it looks […] - [How ETF Creation and Redemption Keep Prices Stable](https://exchangifi.com/how-etf-creation-redemption-keep-prices-stable/): The creation and redemption mechanism is what makes ETFs liquid, tax-efficient, and fairly priced—even during market volatility. What Are Authorized Participants? Authorized Participants (APs) are large financial institutions—typically broker-dealers—with exclusive rights to create or redeem ETF shares directly with fund companies. They trade in large blocks called creation units (usually 25,000-100,000 shares) and work with market makers to provide exchange liquidity. How Creation Units Work APs exchange standardized blocks of ETF shares for baskets of underlying securities that mirror the ETF’s portfolio. This basket might include stocks, bonds, or other assets, plus small cash amounts for balancing. The Arbitrage Process Keeps […] - [How ETF Market Makers Keep Share Prices Aligned with NAV](https://exchangifi.com/how-etf-market-makers-keep-share-prices-aligned-with-nav/): Explore comprehensive strategies for using diversified ETF portfolios to weather market storms while maintaining consistent long-term growth - [Understanding ETF Tax Efficiency in 2025](https://exchangifi.com/understanding-etf-tax-efficiency-in-2025/): Learn how ETFs provide superior tax advantages compared to mutual funds and discover strategies to maximize your after-tax returns through smart ETF selection. - [Can You Use Section 351 to Transfer Assets to an Existing ETF?](https://exchangifi.com/can-you-use-section-351-exchange-transfer-asset-existing-etf/): A comprehensive beginner's guide to building a solid investment foundation with these carefully selected, low-cost ETF options that provide broad market exposure. - [Investor Guide to What Happens When an ETF Liquidates](https://exchangifi.com/investor-guide-when-an-etf-liquidates/): Mid-market IT leaders face enterprise-level challenges with smaller teams and tighter budgets. From supporting hybrid work to tightening security, traditional desktop setups are feeling the strain. Virtual desktops (also known as Virtual Desktop Infrastructure, or VDI) are em ## Pages - [351 Education & Resource Center](https://exchangifi.com/351-exchange-resource-center/) - [Pricing](https://exchangifi.com/pricing/) - [351 Exchange ETFs](https://exchangifi.com/351-exchange-etfs/) - [Do Not Sell or Share My Personal Information](https://exchangifi.com/do-not-sell-or-share/): Please complete the form below to submit your request to opt out of the sale or sharing of your personal information. - [Contact](https://exchangifi.com/contact/) - [Newsroom](https://exchangifi.com/newsroom/) - [Press Hub](https://exchangifi.com/press-hub/) - [Team](https://exchangifi.com/team/) - [FAQS](https://exchangifi.com/faqs/) - [Perspectives](https://exchangifi.com/perspectives/) - [About 351](https://exchangifi.com/about-section-351-exchange/) - [Home Exchangifi](https://exchangifi.com/) - [Cookie Policy](https://exchangifi.com/cookie-policy/): This page provides comprehensive information about how we use cookies on our website to enhance your browsing experience, improve website performance, and deliver personalized content. Cookies are small text files that are stored on your device when you visit our site. They help us understand how visitors interact with our website, allowing us to offer a smoother and more efficient user experience. In the table below, you will find detailed information about each type of cookie we use, their purpose, and how long they remain on your device. We are committed to respecting your privacy and providing transparency about the data […] - [Disclaimers & Disclosures](https://exchangifi.com/disclaimers-disclosures/): Please read these Disclaimers and Disclosures carefully. They are an integral part of your use of ExchangiFi.com and supplement our Terms of Service and Privacy Policy. ExchangiFi is a marketing platform, not an investment advisor ExchangiFi.com, operated by Tax Deferred Exchange Concepts LLC, functions solely as a marketing platform. Our primary purpose is to connect investors with ETF issuers and provide tools that may assist in understanding concepts related to tax-deferred exchanges. ExchangiFi is NOT a registered investment advisor, broker-dealer, financial planner, or tax advisor. No financial advice provided Nothing on this website, ExchangiFi.com, nor any interaction with our employees or […] - [Terms of Service](https://exchangifi.com/terms-of-service/): Introduction and acceptance of terms Thank you for your interest in ExchangiFi, LLC (“ExchangiFi,” “we,” “us,” or “our”). ExchangiFi owns, licenses, and operates the website located at exchangifi.com and any related applications, platforms, and tools (collectively, the “Site” or “Platform”). The Platform is intended solely to provide educational materials, information, and resources relating to Section 351 exchange transactions and exchange-traded funds (“ETFs”). These Terms of Service (“Terms”) govern your access to and use of the Site. By accessing or using the Site in any way, you accept and agree to be bound by these Terms. If you do not agree to […] - [Privacy Policy](https://exchangifi.com/privacy-policy/): Thank you for your interest in ExchangiFi, LLC (“ExchangiFi,” “we,” “us,” or “our”). ExchangiFi owns, licenses, and operates the website located at exchangifi.com and any related applications, platforms, and tools (collectively, the “Site” or “Platform”). This Privacy Policy describes how we collect, use, disclose, and protect information from and about you through our Site and any other interaction or communication that you may have with or through ExchangiFi (collectively, the “Services”). The Platform is an educational technology platform designed to provide users with general information, educational content, and resources relating to Section 351 ETF exchange transactions. 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