Bitcoin Fundamentals: What Long-Term Investors Should Understand
How Bitcoin's supply schedule works, what on-chain metrics actually measure, why the asset is so volatile, and how to think about access, custody, taxes and position size in a diversified portfolio.
Bitcoin is no longer a fringe topic in client meetings. It trades in exchange-traded funds, shows up on brokerage statements and now has its own IRS reporting form. Yet many investors who own it, or are considering it, have never had the basics explained without hype in either direction.
This article covers the fundamentals we think every long-term investor should understand before deciding whether Bitcoin has any place in their plan. It is not a forecast, and it is not a recommendation to buy or sell. Bitcoin can lose a large part of its value quickly, and it is possible to lose your entire investment.
Fixed supply and the halving cycle
Bitcoin's software caps total supply at 21 million coins. New coins enter circulation as a reward to "miners," the computers that validate transactions and add new blocks to the blockchain. Roughly every four years (every 210,000 blocks), that reward is cut in half. This event is called the halving.
The most recent halving took place on April 20, 2024, at block 840,000, reducing the reward from 6.25 to 3.125 BTC per block. The next is expected around 2028. Each halving slows the rate of new supply, which is why Bitcoin is often described as "digitally scarce."
Two cautions are worth stating. First, scarcity alone does not create value; price depends on demand, which can fall as easily as it rises. Second, the halving schedule is public and known years in advance. Investors should be skeptical of anyone treating it as a reliable timing signal.
On-chain metrics: what MVRV and realized value measure
Because every Bitcoin transaction is recorded on a public ledger, analysts can study holder behavior in ways that are not possible with stocks. Two widely cited concepts are realized value and MVRV.
- Realized value (realized cap). Instead of pricing every coin at today's market price, this values each coin at the price when it last moved. It approximates what holders collectively paid, a rough "cost basis" for the whole network.
- MVRV ratio. Market value divided by realized value. A reading above 1 means the market values coins above their aggregate cost basis; below 1 means much of the supply sits at a loss.
Analysts use these metrics to describe sentiment: whether holders are broadly sitting on large gains or large losses. Historically, very high readings have coincided with late-cycle exuberance and readings below 1 with deep bear markets. But these are descriptive, backward-looking patterns. They do not tell you what the price will do next, and past cycles may not repeat. We treat them as context, never as a trigger.
Liquidity and macro sensitivity
Bitcoin is sometimes called "digital gold," but in practice it has often behaved like a high-risk growth asset. During periods of rising interest rates and tightening financial conditions, it has tended to fall alongside speculative technology stocks. When liquidity is abundant, it has tended to benefit.
As institutional ownership has grown through ETFs and hedge funds, Bitcoin increasingly trades as one risk position among many. That can raise its correlation with other markets exactly when diversification matters most. Investors should not assume it will hold up during a broad sell-off.
Volatility and drawdown history
Bitcoin's history includes several declines that would be considered catastrophic for most asset classes. Based on widely tracked cycle data:
| Cycle | Approx. peak-to-trough decline | Approx. duration |
|---|---|---|
| 2013–2015 | -87% | About 400 days |
| 2017–2018 | -84% | About 350 days |
| 2021–2022 | -77% | About 380 days |
Earlier drawdowns recovered, but there is no guarantee future ones will. Sharp double-digit swings over a few weeks have also been common between those major cycles. Anyone holding Bitcoin should be emotionally and financially prepared to watch a position fall by most of its value and stay down for a year or more.
The right Bitcoin position is one you could watch fall 80% without changing your retirement date.
Ways investors get exposure in 2026
Since the SEC approved the first U.S. spot Bitcoin ETFs in January 2024, investors have had a choice that did not exist before. Each route carries trade-offs.
Spot Bitcoin ETFs
Held in an ordinary brokerage account or IRA, with familiar statements and tax forms. You pay an ongoing expense ratio, trade only during market hours, and rely on the fund's custodian. You do not own the coins directly.
Direct ownership
Buying on an exchange and holding the coins yourself or with a qualified custodian. You can transact around the clock and control the asset, but you take on operational and security risk, and recordkeeping for taxes falls largely on you.
Other routes exist, such as futures-based funds and shares of companies that hold Bitcoin, but these add their own costs, tracking differences and company-specific risk.
Custody and security
With direct ownership, whoever controls the private keys controls the coins. Transactions generally cannot be reversed. Common risks include exchange failures, hacking, phishing, lost seed phrases and family members who cannot access assets after a death or incapacity.
- Exchange custody is convenient but exposes you to the platform's solvency and security.
- Self-custody with a hardware wallet removes that counterparty, but a single mistake can mean permanent loss.
- Multi-signature or institutional custody can spread control across several keys or parties, at added cost and complexity.
Whatever the method, document how heirs can access the assets. This belongs in your estate plan, not in your memory.
Tax treatment basics
For U.S. federal tax purposes, the IRS treats digital assets as property, not currency. Selling, exchanging one coin for another, or spending Bitcoin can trigger a capital gain or loss. Assets held more than one year qualify for long-term rates; for 2026 those are 0%, 15% or 20% depending on taxable income. Gains on assets held one year or less are taxed as ordinary income.
Reporting has also tightened. Custodial brokers began reporting gross proceeds on the new Form 1099-DA for 2025 transactions, and basis reporting applies to certain transactions starting in 2026, generally for coins acquired in the same broker account. Coins held in self-custody wallets are not reported by a broker, but the sales are still taxable and must be reported on Form 8949. Every Form 1040 also asks whether you had digital-asset activity during the year. Coordinating these details with your broader Налоговое планирование can help avoid costly surprises.
Position sizing and portfolio role
Because the range of outcomes is so wide, position size matters more than entry point. A small allocation lets an investor participate in potential upside while limiting the damage if the asset falls sharply or fails. In our process, any digital-asset allocation is sized against the client's goals, time horizon and ability to absorb loss, then rebalanced on a schedule rather than in reaction to headlines.
Bitcoin should complement, not replace, the core of a diversified portfolio. For many investors, the appropriate allocation is zero. You can learn more about how we approach this on our digital-asset portfolio management page and within our broader Управление инвестициями framework.
Regulatory risk
The rules around digital assets continue to change. Congress has debated market-structure legislation, agencies have revised their guidance, and tax reporting has expanded. Future changes could affect how Bitcoin is traded, held, taxed or accessed through retirement accounts, in ways that may help or hurt investors. Rules in other countries also matter for global liquidity. Regulatory risk is ongoing, not a solved problem.
Frequently asked questions
Does the fixed supply mean Bitcoin's price has to rise?
No. Limited supply only matters if demand holds up. If demand falls, a fixed supply does nothing to support the price.
Is a spot ETF safer than owning Bitcoin directly?
It removes some operational risks, such as lost keys, but the price risk is the same. You also take on fund costs and reliance on the ETF's custodian.
Can on-chain metrics like MVRV tell me when to buy?
They describe how holders are positioned relative to their cost basis. Past patterns are not reliable predictors, and we do not use them as timing signals.
Do I owe tax if I just hold Bitcoin?
Generally no. Buying with dollars and holding is not a taxable event. Selling, exchanging or spending it typically is.
If you hold Bitcoin or are weighing whether it belongs in your plan, we can help you think through sizing, custody and taxes.
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Sources
Internal Revenue Service — Digital Assets (irs.gov, accessed 2026)
Kiplinger — IRS Updates Capital Gains Tax Thresholds for 2026 (2025)
Beancount — Form 1099-DA Digital Asset Broker Reporting 2026: Cost Basis and Form 8949 Guide (2026)
BitRef — Bitcoin Halving 2028 Countdown (accessed 2026)
Glassnode — MVRV Ratio, Metric Guide (accessed 2026)
BIT Knowledge Hub — Bitcoin Cycles (accessed 2026)
The Block — SEC approves 11 spot bitcoin ETFs (2024)
This article is for informational and educational purposes only and does not constitute investment, tax, legal or insurance advice, or a recommendation to buy or sell any security or insurance product. Strategies discussed may not be suitable for every investor. Investing involves risk, including possible loss of principal. Insurance and annuity guarantees are subject to the claims-paying ability of the issuing insurance company. Please consult your advisor regarding your own circumstances. Sovereign Wealth Management is a registered investment adviser.
