Investment risk is not one thing. The SEC's investor education office defines it as the uncertainty or potential financial loss in an investment decision, and that loss can come from at least ten separate directions: a borrower that does not pay, prices that rise faster than your interest, a market that falls, a custodian that fails or a tax rule that changes. Each investment trades some of these risks for others. The useful question is never whether something is risky, but which risks it carries and whether those are the ones you can live with.
What are the main types of investment risk?
The ten main types are credit, inflation, interest rate, reinvestment, liquidity, market, currency, concentration, custody or counterparty, and regulatory or tax risk.
- Credit or default risk: the issuer or borrower fails to pay interest or principal on time. With a stock, the equivalent is business risk: if a company is liquidated, common shareholders are paid last and may get nothing.
- Inflation risk: your return does not keep up with rising prices, so the money buys less when you spend it. It falls hardest on fixed-rate and cash holdings.
- Interest-rate risk: rising rates push down the market price of existing bonds, because new ones pay more.
- Reinvestment risk: when a bill, CD or bond matures, or a bond is called early, you may have to reinvest at a lower rate.
- Liquidity risk: you cannot sell quickly at a fair price, or you pay a penalty or a wide bid-ask spread to get out.
- Market or volatility risk: prices swing even when nothing is wrong with the investment itself. The SEC notes that large-company stocks as a group have lost money in about one year out of three, and FINRA points out that stock prices fell 57% in 2008 and 2009.
- Currency risk: exchange-rate moves change what an investment is worth in the currency you spend.
- Concentration risk: too much of your money depends on one holding, sector, employer or region.
- Custody or counterparty risk: the firm that holds your asset, or the other side of a contract, fails or loses track of what you own.
- Regulatory or tax risk: a change in law, regulation or tax treatment reduces your return or your protections.
The first eight affect what an investment is worth. The last two affect whether you can keep and use what it is worth, which is why they are easy to overlook until something breaks.
How do the ten risks compare across cash and investments?
Every option sits high on at least one risk; the table shows where each one is exposed, for a US resident who spends dollars.
| Risk | Insured savings or CD | T-bills | Government money fund | 10-year Treasury | Corporate bond fund | Stock index fund | Crypto or stablecoins |
|---|---|---|---|---|---|---|---|
| Credit or default | Very low within FDIC limits | Very low | Very low | Very low | Moderate | Business failure; owners rank last | High: issuer or platform |
| Inflation | High | Moderate | Moderate | High | High | Lower over long holding periods | Unpredictable |
| Interest rate (price) | None | Very low | Very low | High | Moderate | Moderate, through valuations | Indirect |
| Reinvestment | High: savings rates float | High: rolls every few weeks | High: yield follows bills | Low until maturity | Moderate | Low | Not applicable |
| Liquidity | Very low; CDs charge early-withdrawal penalties | Low | Low | Low | Low to moderate | Low | Varies by platform and coin |
| Market (price swings) | None | Very low | Very low | Moderate | Moderate | High | Very high |
| Currency | None | None | None | None | None | Some, through foreign revenue | Varies with peg and issuer |
| Concentration | Low within limits | Low | Low | Low | Low | Low | High |
| Custody or counterparty | Low at a bank; higher through apps | Low | Low | Low | Low | Low | High on exchanges |
| Regulatory or tax | Low | Low; exempt from state income tax | Low | Low | Low | Moderate: tax on gains can change | High: rules still being written |
Three readings stand out. Cash-like options are low on almost everything except inflation and reinvestment, which is exactly where they cost you over long periods. Stocks reverse that pattern: high price risk in any given year, lower inflation risk over decades, because company revenues have historically tended to rise with prices. And crypto is high on most rows at once, including the custody and regulatory rows that no other column scores as high. For someone who spends euros, rupees or pesos, add currency risk to every dollar column.
Which risks does cash still carry?
Cash in an insured account carries inflation and reinvestment risk, plus custody risk when it sits with an app rather than directly at a bank.
Deposit insurance removes default risk up to the limit, covering $250,000 per depositor, per insured bank, per ownership category. It does nothing about the slow loss of purchasing power when the interest rate sits below inflation. The FDIC's national average savings rate was 0.38% (FDIC, as of Nov 1, 2026), while the consumer price index was 3.74% higher in September 2026 than a year earlier.
Worked example: Inflation risk on $20,000 in an average savings account
Assume prices rise 3.74% over the next year, matching the 12 months to September 2026, and the account pays the 0.38% national average.
- Interest: $20,000 × 0.38% = $76, so the balance grows to $20,076
- Purchasing power of that balance in today's dollars: $20,076 ÷ 1.0374 = $19,352
- Loss of purchasing power: about $648, or 3.24% of the original deposit
The statement shows a gain of $76; the grocery bill shows a loss of $648.
The exact formula and after-tax versions are in real returns and inflation, and the compound interest calculator shows how a small yearly shortfall compounds over a decade. Reinvestment risk is the other cost: a savings rate can be cut the day after you deposit, and a maturing bill rolls into whatever the next auction pays. What counts as the safe benchmark rate, and why it moves, is covered in what is the risk-free rate?
How does interest-rate risk hit bonds?
Interest-rate risk lowers the market value of bonds you already own when new bonds pay more, and the longer the maturity, the bigger the drop.
Worked example: A 10-year Treasury note after a one-point rate rise
You buy $10,000 of a new 10-year Treasury note at par with a 4.94% coupon, the October 30, 2026 par yield. A year later, Treasuries with nine years left yield 5.94%.
- Price of your note at a 5.94% yield with 18 semiannual coupons left: about 93.11 per 100 of face value
- Market value: about $9,311, a paper loss of about $689
- Coupons received during the year: $494
- Net result if you sell: about −$195, or −1.95%
Held to maturity in 2036, the note still pays every coupon and returns $10,000. A 13-week bill hit by the same one-point jump would lose roughly 0.25% of its price and mature at face value within weeks.
The paper loss is real if you need to sell, which is why interest-rate risk and liquidity needs go together. Funds that hold bonds never mature as a whole, so a bond fund's price can stay lower for longer than a single note held to its end date. The mechanics, including duration, are in why bond prices fall when rates rise, and the risks Treasuries keep despite their credit quality are listed in are Treasuries risk-free?
Why does concentration risk matter so much?
Concentration turns one company's bad year into your bad year, because a large position lets a single failure dominate the whole portfolio.
FINRA lists the common ways it happens: deliberate bets on one stock or sector, a winning position that grows until it dominates, retirement savings piled into an employer's shares, holdings that look different but move together, such as individual technology stocks plus a technology fund plus an index fund that owns the same companies, and large stakes in investments that are hard to sell.
Worked example: One stock at 40% of a $100,000 portfolio
A portfolio holds $40,000 in one company's shares and $60,000 in a broad index fund. The company's stock falls 60% while the index is flat.
- Loss: $40,000 × 60% = $24,000, or 24% of the portfolio
- The same fall as a 5% position ($5,000): $3,000, or 3% of the portfolio
Index funds fall too, but they spread a single company's collapse across hundreds of holdings.
You can compare a single stock's swings with a broad index on the SPY page and the wider stocks section. Crypto portfolios are often concentrated by design, in one or two coins whose prices move together; the Bitcoin page shows how far that one asset has moved. The trade-offs between the two asset classes are compared in crypto vs stocks.
What are custody and counterparty risk?
Custody risk means the firm holding your asset fails or loses track of it; counterparty risk means the other side of a deal does not deliver.
These risks are about the plumbing, not the investment. A Treasury bill is backed by the full faith and credit of the US government, but if you hold it through a broker, the broker is a custodian that could fail. Different protections answer different failures:
- A bank failure: FDIC insurance covers deposits within the limits, and the FDIC usually pays within days.
- A broker failure with customer assets missing: SIPC restores securities and cash up to $500,000 per customer, including up to $250,000 in cash.
- A crypto exchange or lending platform failure: usually neither applies, and customers become claimants in a bankruptcy.
- A fintech app whose recordkeeping fails: FDIC coverage applies only if the money sat at an insured bank, was properly titled and a bank actually failed.
The FDIC's own list of uninsured products includes stocks, bonds, mutual funds, annuities, crypto assets and even Treasury securities, which are backed by the government directly rather than by deposit insurance. How the two federal programs differ is laid out in FDIC vs SIPC, and the extra layer that apps and broker sweeps add is in cash sweep accounts explained. For digital assets, see custodial vs non-custodial wallets and compare stablecoin prices and market data on the top stablecoins page.
How do currency, liquidity and regulatory risks show up?
They usually appear at the moment you need the money: when you convert it, sell it in a hurry, or find that the rules have changed since you bought.
Currency. A saver in India holding $10,000 of T-bills at 4.08% earns about $408 in a year if rates hold. If the rupee strengthens 5% against the dollar over that year, the position is worth about 1.1% less in rupees, because 1.0408 × 0.95 = 0.989. The USD to INR converter shows how far the pair has moved recently.
Liquidity. FINRA describes liquidity as how easily you can buy or sell at a fair price when you want to. In practice it shows up as a CD's early-withdrawal penalty, a wide bid-ask spread on a thinly traded bond, a fee a money market fund board may impose when markets are stressed, or a crypto platform pausing withdrawals. FINRA's suggested defense is to match liquidity to your timeline: keep money you may need soon in assets you can sell at short notice.
Regulatory and tax. Rules change. The GENIUS Act sets reserve and disclosure requirements for payment stablecoin issuers, on this timeline: Signed July 18, 2025 (Public Law 119-27); takes effect January 18, 2027. A federal excise tax on remittances now takes 1% of the amount sent, on transfers paid with cash, a money order, a cashier's check or a similar physical instrument. On the tax side, Treasury interest is exempt from state and local income tax while bank interest is not, so an option's after-tax ranking can change when you move states or when tax law does.
Questions to ask about any investment's risks
The ten risks become practical when you turn them into questions before you buy or move money.
Ten questions, one per risk
- Who owes you the money, and what happens if they cannot pay?
- What has inflation been over the past year, and does this return beat it after tax?
- How much would the price fall if interest rates rose one percentage point?
- What rate is likely to be available when this matures or is called?
- How fast can the money come back to you, and what does that cost?
- How far has this investment fallen in a bad year?
- Which currency will the money eventually be spent in?
- What share of your total savings does this one holding represent?
- Who holds the asset, and which protection applies if that firm fails?
- Which law, regulation or tax rule could change the answer to any of the above?
If the money is needed within a year, the first five questions usually matter most. Over five years or more, market, inflation and concentration risk take over, which is why long-term portfolios typically mix asset types (building a well-balanced portfolio).
What are the risks of managing only one risk?
The main danger is that removing one risk quietly adds another, so a plan that targets only one row of the table can fail on a different row.
- Avoiding all price swings by holding only cash swaps market risk for inflation risk; over 20 years even a one-point yearly shortfall adds up.
- Chasing yield to beat inflation often adds credit or liquidity risk that only shows up in a bad year.
- Relying on insurance labels covers failure, not losses: FDIC and SIPC protect against an institution collapsing, not against an investment falling.
- Measuring risk only by volatility misses liquidity, custody and currency risk, none of which shows up in a price chart until it is too late.
- Hedging everything costs money. FINRA notes that hedging and insurance products typically add, often significantly, to costs, which eats into returns.
- Ignoring correlation: five funds that hold the same large companies are one bet, not five.
The aim is not zero risk, which no option offers, but a set of risks you have chosen deliberately and can afford. The safe investments hub groups the guides by goal, from emergency funds to cash you will need in a few years.