A 10b5-1 plan is a prearranged trading schedule that lets corporate insiders sell stock on autopilot with an SEC safe harbor against insider trading charges. Most insider selling you see in filings is this: a plan, not a panic.

10b5-1 Plan

A 401(k) is an employer-sponsored retirement account where salary compounds tax-deferred (or tax-free, if Roth), invested from a fund menu you choose. It is the largest compounding account most Americans ever own, with free employer money bolted on.

401(k)

A 401(k) employer match is free money your employer adds on top of your contribution, typically 50 cents on the dollar up to 6% of salary. It is an immediate, guaranteed return nothing in the market can offer, and skipping it is declining a raise.

401(k) Employer Match

Vesting is the schedule that decides when your employer's 401(k) match actually belongs to you: leave early and the unvested slice stays behind. Your own contributions are always yours from the first dollar.

401(k) Vesting

A 403(b) is the nonprofit and public-school version of the 401(k): same $24,500 deferral, same tax mechanics, historically worse fund menus. The plan is fine; the vendor menu is the thing to read.

403(b)

A 457(b) plan is a deferred-compensation account for state and local government employees with no early-withdrawal penalty, ever. It stacks on a 403(b) or 401(k) with its own $24,500 limit.

457 Plan

A 529 plan is a state-sponsored education savings account where growth compounds tax-free for qualified education costs. The federal side has no contribution cap, the state deduction varies by state, and unused funds now have a Roth IRA escape hatch.

529 Plan

A 72(t) SEPP is an IRS exception that lets you withdraw retirement money before 59½ without the 10% penalty, in fixed annual installments. The schedule runs for five years or until 59½, whichever is longer, and breaking it retroactively re-applies the penalty to everything.

72(t) SEPP

Alpha is the return an investment delivers beyond what its market exposure explains, and it is what active managers charge for. The scorecards say roughly nine in ten large-cap funds never produce it after fees, which is the case for keeping the index and the difference.

Alpha

The alternative minimum tax is a parallel calculation with fewer deductions and two flat rates, 26% and 35%, owed only when it exceeds the regular tax. The $88,100 single exemption keeps most filers out; the phase-out above $500,000 is the trap.

Alternative Minimum Tax

An American depositary receipt is a US-traded certificate representing shares in a foreign company: issued by a US bank, priced in dollars, and traded on US exchanges. It is foreign diversification without a foreign brokerage account.

American Depositary Receipt (ADR)

An amortization schedule is the month-by-month table behind every fixed loan: each payment splits into interest and principal, and the split shifts toward principal as the balance falls. On a 30-year mortgage, half the payment is still interest at year 19.

Amortization Schedule

Anchoring is the tendency to fix on the first number and adjust insufficiently from it: the purchase price, the 52-week high, the MSRP. The market does not know your basis; the $30 stock you bought at $50 is priced on fundamentals, not on your anchor.

Anchoring

APR is the annual cost of borrowing, expressed as a rate and required by law on US loans and credit cards. Unlike APY it folds fees into the number, and unlike APY it usually hides the compounding.

Annual Percentage Rate (APR)

APY is the annual rate you actually earn on a savings account once compounding is included. It is the only number on a savings advertisement I trust, because the law requires it to tell the truth.

Annual Percentage Yield (APY)

An annuity is an insurance contract that converts a lump sum into a stream of payments, starting now (immediate) or later (deferred). It is the only retail product guaranteeing income for life, and the fee schedule is where the cost hides.

Annuity

Asset allocation is the split of your portfolio across stocks, bonds, cash, and alternatives before you pick anything specific. Study after study attributes most of your return variation to this one decision.

Asset Allocation

A balance transfer moves credit card debt to a new card at a promotional APR, often 0% for 15 to 21 months, for a fee of 3% to 5%. The transfer fee is the price; the payoff schedule inside the promo window is the whole point.

Balance Transfer

A bank failure runs on a Friday-to-Monday script: the regulator closes the bank, the FDIC becomes receiver, and insured deposits are available Monday morning at the assuming bank. The $250,000 per-depositor rule is the guarantee; the 2023 failures are the case studies.

Bank Failure (FDIC Receivership)

A bear market is a 20% or greater decline from a peak, the price the market charges for the bull market's compounding. Post-war bears have lasted roughly a year on average, and the market has recovered from every single one.

Bear Market

Beta measures how much an investment moves when the market moves: a beta of 1 tracks the market, 1.5 moves half again as far, 0.5 moves half as far. It is market exposure, not skill, and it is the first thing to check before admiring anyone's returns.

Beta

A blue chip is a large, established, financially sound company with a household name, the Dow 30 being the classic list. The label is a reputation, not a guarantee: Lehman Brothers was 158 years old when it went to zero.

Blue Chip

A bond ladder staggers maturities across years — one rung maturing every year — so principal arrives on schedule and reinvestment happens gradually instead of all at once. It converts a lump sum into a paycheck-like stream of known dates.

Bond Ladder

A bond yield is the annual return a bond pays from its current price, not its face value: the coupon divided by what you actually pay. Yields and prices move in opposite directions, and the yield to maturity is the number that matters.

Bond Yield

A bond is a loan you make to a government or corporation, which pays you interest for a set term and returns the principal at maturity. Bonds are the ballast of a portfolio, and 2022 proved they are not risk-free.

Bonds

Book value is shareholders' equity: total assets minus total liabilities, as the balance sheet states them. It is the accounting claim the company carries, and per share it is the denominator of the price-to-book ratio.

Book Value

A bull market is a sustained rise of 20% or more from a low, measured on the S&P 500 and dated after the fact by S&P Dow Jones Indices. Post-war bulls have averaged roughly five years, and every one of them felt permanent while it ran.

Bull Market

Buy now, pay later splits a purchase into four installments, 25% down and three more every two weeks, interest-free with a flat late fee. It is checkout credit without the credit report, which is both the appeal and the trap.

Buy Now, Pay Later (BNPL)

Capital gains tax is the tax owed when you sell an asset for more than you paid, with the rate set by how long you held it. Held over a year, the rate drops from income-tax levels to 0%, 15%, or 20%.

Capital Gains Tax

A credit card cash advance is the most expensive product the card sells: a 5% fee, interest from the first dollar at a rate often higher than purchases, and no grace period ever. The ATM fee stacks on top at the machine.

Cash Advance

Catch-up contributions are the extra deferral room the IRS grants from age 50: $8,000 more in a 401(k), 403(b), or 457(b) in 2026. From 60 to 63 the room widens again, and high earners must take it as Roth.

Catch-Up Contributions

A certificate of deposit is a bank deposit with a fixed rate and a fixed term, from three months to five years, insured by the FDIC to $250,000. Breaking the term early costs months of interest, which is the price of the lock.

Certificate of Deposit

The child tax credit is $2,200 per qualifying child under 17 in 2026, refundable up to $1,700, phasing out above $400,000 joint and $200,000 single. It is the largest per-child line on the family return, and the phase-out is the cliff.

Child Tax Credit

Circuit breakers are preplanned trading halts that pause the market when prices fall too fast: three market-wide levels keyed to S&P 500 declines, plus per-stock limit-up limit-down bands. The pause is the design, not the failure.

Circuit Breakers

Closing costs are the fees behind every home purchase and refinance, 2% to 5% of the loan: lender fees, title insurance, appraisal, escrow, and prepaids. The $400,000 house costs $8,000 to $20,000 at the table, and the lender comparison is the lever.

Closing Costs

Commodities are raw materials — crude oil, natural gas, gold, wheat, copper — that produce no earnings and no dividends, so their return is price movement and nothing else. They hedge inflation and diversify a portfolio, and both services are paid for in volatility and roll costs.

Commodities

Compound interest is earning interest on both your original principal and the interest that principal has already accrued. It is the single most reliable mechanism I have for turning modest, regular savings into something worth opening a calculator at 2:13 AM for.

Compound Interest

A convertible bond is corporate debt that can be exchanged for a fixed number of shares, so it pays a coupon while holding an option on the stock. It falls less than the stock in a drawdown and participates more than a plain bond in a rally.

Convertible Bonds

Correlation measures how two investments move together, on a scale from +1 for identical direction to -1 for opposite. Diversification only reduces risk when the pieces are not correlated, and the 2022 stock-and-bond fall showed what happens when they are.

Correlation

A Coverdell ESA is an education savings account with tax-free growth but a $2,000 annual contribution cap per beneficiary. The contributor's income phases out above $220,000 for joint filers, and the money must be used or rolled by age 30.

Coverdell ESA

A covered call is selling someone the right to buy a stock you already own, at a price above today's, for cash today. The premium is real income; the cap on your upside is the fee you paid for it.

Covered Call

The credit card APR is the annual rate on revolving balances, commonly 20% to 30% in 2026, and it compounds daily with no grace period once a balance carries. Pay in full every month and the APR is irrelevant; carry a balance and it is the most expensive money in personal finance.

Credit Card APR

A credit freeze locks your credit reports at all three bureaus so no new account can be opened in your name, free under federal law and reversible in minutes. It does not affect your score or your existing accounts; the thaw is the routine before applying.

Credit Freeze

A credit score is a three-digit summary of how you have handled debt, running 300 to 850: payment history carries 35% of it and utilization 30%. The score prices every loan you apply for, most directly the mortgage.

Credit Score

Credit utilization is revolving balances divided by credit limits, and it is 30% of your FICO score, recomputed at every statement close. The famous 30% rule is a heuristic, not a threshold: lower is better, and the statement date is the deadline.

Credit Utilization

Dark pools are private trading venues where institutional block trades execute away from public exchanges, registered with the SEC as alternative trading systems. They are legal, disclosed in aggregate, and roughly half of US stock volume now trades off-exchange.

Dark Pools

The debt ceiling is the statutory cap on total federal borrowing, and it is not a fiscal rule: it authorizes borrowing for spending Congress has already approved. Standoffs produce the X-date, the S&P downgrade of 2011, and T-bill yield spikes; the ceiling has been raised or suspended roughly 80 times since 1960.

Debt Ceiling

The debt-to-income ratio is your monthly debt payments divided by your gross monthly income, and it is the number mortgage lenders price your approval against. The classic guideline is 28/36; today's approvals often stretch to 43% and beyond.

Debt-to-Income Ratio

A defined benefit pension promises a formula-driven paycheck for life: years of service times an accrual rate times final salary, paid regardless of market returns. It is the retirement plan your grandfather had and you almost certainly do not.

Defined Benefit Pension

A dependent care FSA is a $5,000 pretax household account for childcare that lets both spouses work: deducted before income and FICA tax, worth roughly $1,483 a year at a 22% bracket. The deadline is the plan year's end, with the employer's grace period.

Dependent Care FSA

Diversification is spreading your money across investments that fail at different times, so no single bad year ends the plan. It is the only free lunch in finance, and the one Brent keeps declining.

Diversification

A dividend is a company distributing part of its earnings to shareholders in cash, usually quarterly. It is not free money: the share price drops by roughly the payout on the ex-dividend date, and the tax treatment decides what is actually yours.

Dividend

The dividend payout ratio is the share of a company's earnings it hands back as dividends: dividends divided by net income. A 40% payout leaves room to grow; a 95% payout leaves none, which is the sustainability test in one number.

Dividend Payout Ratio

A dividend reinvestment plan turns cash payouts into more shares automatically, usually for free at any major broker. It is the compounding switch: same dividends, same companies, but every payout buys the next one's partner.

Dividend Reinvestment Plan (DRIP)

Dividend yield is a company's annual dividend divided by its share price: the income rate a stock pays today. It moves inversely with price, which is why the highest yields on any screen are usually the market pricing a cut.

Dividend Yield

Dollar-cost averaging is investing a fixed amount on a fixed schedule regardless of price, so you buy more shares when they are cheap and fewer when they are not. Your 401(k) already does this every paycheck.

Dollar-Cost Averaging

The Dow, the S&P 500, and the Nasdaq are three different measurements of the same US market: 30 price-weighted blue chips, 500 cap-weighted large caps, and everything listed on one exchange. Only two of them own your 401(k).

Dow Jones vs S&P 500 vs Nasdaq

A drawdown is the percentage fall from an investment's peak to its trough, and it is the number that decides whether an investor holds or sells. Recovery is asymmetric: a 50% drawdown needs a 100% gain to break even.

Drawdown

Duration measures a bond fund's price sensitivity to interest rates: a duration of 7 means a one-point rate rise knocks roughly 7% off the price. It is the number that explains 2022, when safe bond funds fell double digits.

Duration

The early withdrawal penalty is the IRS's 10% additional tax on retirement money taken out before age 59½, on top of ordinary income tax. A short list of statutory exceptions exists, and knowing it is worth real money.

Early Withdrawal Penalty

Earnings per share is a company's net income divided by its shares outstanding: each owner's slice of the profit. It is the E in the P/E ratio, and the share-count half of that fraction moves more than most investors notice.

Earnings Per Share

An emergency fund is three to six months of essential expenses parked in liquid, boring accounts: a high-yield savings account at 4% or a T-bill ladder. It is the buffer that keeps a job loss or a $1,000 surprise from becoming credit card debt.

Emergency Fund

The endowment effect is valuing things more once you own them: Kahneman and Thaler's mug experiments found owners demanded roughly twice what buyers offered. In a portfolio it is the inherited stock nobody will sell, the employer shares nobody will trim, and the house priced above the market because it is yours.

Endowment Effect

An equal-weight index gives every constituent the same allocation, so a $10 stock counts as much as a $400 one. It is the cap-weighted index with the concentration removed, and the quarterly rebalancing churn is the fee for that.

Equal-Weight Index

Escrow is the account, or the neutral third party, holding money until conditions are met: taxes and insurance collected with the mortgage payment, and the earnest money held between offer and closing. The impound account is the payroll of homeownership.

Escrow

The federal estate tax takes 40% of an estate above the exemption, $15 million per person in 2026. Two spouses stack to $30 million with portability, and almost no American estate owes it: roughly 0.2% of deaths, with state taxes the real risk.

Estate Tax

An exchange-traded fund is a basket of securities that trades on an exchange like a single stock, priced continuously through the session. It is the cheapest, most tax-efficient wrapper the market sells for owning a diversified slice.

Exchange-Traded Fund

The expense ratio is the annual fee a fund charges, deducted daily from the fund's assets before returns reach you. It is the only guaranteed number in investing, and it is guaranteed against you.

Expense Ratio

Factor investing is tilting a portfolio toward stock characteristics with documented long-run return premiums: value, momentum, quality, size, and low volatility. The premiums are real in century-long data, and they are capable of underperforming for a decade at a stretch.

Factor Investing

FDIC insurance is the federal guarantee on bank deposits: $250,000 per depositor, per insured bank, per ownership category. It covers checking, savings, and CDs, and it does not cover anything invested in the market.

FDIC Insurance

The federal funds rate is the overnight rate banks charge each other, steered by the FOMC into a target range, and it is the lever behind every APY, savings rate, and ARM reset in the country. When the Fed moves it, every account you own reprices within months.

Federal Funds Rate

FICA is the 7.65% payroll line on every payslip: 6.2% for Social Security up to the wage base and 1.45% for Medicare with no cap. The employer pays a matching 7.65% the payslip never shows, which is the invisible half of every salary.

FICA Taxes

FIRE (Financial Independence, Retire Early) is the practice of saving 25 to 30 times annual expenses to fund retirement decades before traditional age. The savings rate, not the market return, is the engine.

FIRE

A fixed-rate mortgage locks one rate for the life of the loan; an adjustable-rate mortgage, ARM, holds a lower intro rate for 5, 7, or 10 years and then adjusts annually with the market. The ARM is a bet on your own exit date.

Fixed vs Adjustable Rate Mortgage

A flexible spending account is a use-it-or-lose-it pretax pot for medical or dependent care costs: $3,400 of health FSA in 2026, deducted before income and FICA tax. The deadline is the plan year's end, softened by whatever your employer chose.

Flexible Spending Account (FSA)

FOMO investing is buying because the chart is vertical and everyone else already has: the meme stock at $483, the crypto at the cycle top, the thematic fund launched at the peak. The vertical chart is where the most buyers arrive and where the return has already been spent.

FOMO (Investing)

Free cash flow is the cash a company has left after running the business and paying for new equipment and buildings: operating cash flow minus capital expenditures. It is the pool that funds dividends, buybacks, and debt paydown, and it is harder to flatter than earnings.

Free Cash Flow

The gift tax is the tax on giving money or assets above the annual exclusion, $19,000 per recipient in 2026, and it shares one exemption with the estate tax. Gifts above the line file Form 709 and shrink the $15 million the estate will need.

Gift Tax

Gold is an asset with no earnings, no dividends, and no cash flow, priced in fear and real interest rates. It hedges inflation and crisis, pays nothing while it waits, and the IRS taxes long-term gains as a collectible at up to 28%.

Gold

Growth vs value investing is the choice between buying companies growing earnings fast and buying companies priced below what they are worth. The two styles trade turns winning, which is the argument for owning both.

Growth vs Value Investing

A health savings account is a triple-tax-advantaged account for people enrolled in a high-deductible health plan: deductible in, tax-free growth, and tax-free out for medical costs. It is the only US account that escapes all three taxes.

Health Savings Account

A home equity line of credit is a revolving credit line secured by your house: variable rate, a ten-year draw period, and then a repayment phase where the payment jumps. It is the cheapest credit you will ever be offered and the most dangerous.

HELOC

High-yield bonds are corporate debt rated below investment grade, paying extra yield for real default risk. The spread over Treasuries is the compensation, the default cycle is the cost, and in a crisis high yield trades like stocks with a coupon.

High-Yield Bonds

A high-yield savings account is a federally insured savings account, usually at an online bank, paying roughly ten times the national average rate. The APY floats with the federal funds rate, so the number on the homepage is a snapshot.

High-Yield Savings Account

A home appraisal is the lender's licensed valuation of the property, ordered to confirm the loan is backed by collateral worth the price. The appraisal gap is the difference between the contract price and the appraised value, and the contingency is the exit.

Home Appraisal

Home bias is overweighting domestic stocks out of familiarity: US investors hold roughly 80% of their equity in US companies even though the US is roughly 60% of the global market. The familiar index is not the whole market, and the 2000s lost decade is what the gap can cost.

Home Bias (Investing)

Home equity is the part of the house you actually own: market value minus the mortgage balance. It builds two ways, paydown and appreciation, and it is the largest single asset most Americans ever hold.

Home Equity

The home sale capital gains exclusion erases $250,000 of gain on a primary residence for a single filer and $500,000 joint, if you owned and lived there two of the last five years. Most home sales owe nothing; the two-year rule is the gate.

Home Sale Capital Gains Exclusion

Series I savings bonds pay a fixed rate plus an inflation adjustment reset every May and November; Series EE bonds guarantee to double in 20 years. They are the Treasury's inflation-proof savings instruments, with a $10,000 annual purchase cap.

I Bonds and EE Bonds

An identity theft report is the FTC's IdentityTheft.gov affidavit plus a police report: the paperwork that unlocks the credit bureaus' block, the creditors' disputes, and the FCRA rights. It is the recovery kit, and the affidavit is the half most people skip.

Identity Theft Report

An index fund holds every security in a market index, on the theory that owning the whole market beats paying someone to guess at it. The data is not close: the theory wins roughly nine times out of ten.

Index Fund

Inflation is the rate at which prices rise and each dollar buys less than it did the year before. It is the quiet tax on every cash balance I own, and the reason a 3% raise can still feel like a pay cut.

Inflation

An inherited IRA holds retirement money left to a beneficiary, taxed as ordinary income when withdrawn. Under the SECURE Act, most non-spouse beneficiaries must empty the account within 10 years, and the 2024 final regulations tightened the schedule further.

Inherited IRA

An initial public offering is a private company's first sale of shares to the public, priced by underwriters the night before it trades. The offering price goes mostly to institutions; retail investors usually buy the pop.

Initial Public Offering (IPO)

Insider trading is trading a stock by someone with access that others lack: legal when reported on SEC Forms 3, 4, and 5, criminal when material nonpublic information is misused. The line is disclosure and duty, not the trading itself.

Insider Trading

An interest rate is the price of money: what it costs to borrow and what it pays to save or lend. Every APY, every mortgage quote, and every credit card statement in America starts from one.

Interest Rate

An inverted yield curve is short-term Treasury yields trading above long-term yields, and it has preceded every US recession since the late 1960s by 6 to 24 months. The 2022-2024 inversion was the longest on record; the signal is a calendar warning, not a stopwatch.

Inverted Yield Curve

Lifestyle creep is spending that rises with income: every raise converts into a nicer car, a bigger apartment, and one more subscription, while the savings rate stays flat. The raise was supposed to buy freedom; instead it bought a higher monthly bill and the same savings rate.

Lifestyle Creep

Liquidity is how fast an investment converts to cash at a fair price without moving the market. It runs a spectrum from a HYSA you can drain tonight to real estate measured in months.

Liquidity

Long-term care insurance pays for the custodial care Medicare does not cover: the nursing home, the assisted living apartment, and the home aides triggered by two failed activities of daily living. A private nursing home room runs roughly $116,800 a year; that is the bill the policy exists to intercept.

The Glossary