Portfolio

A year of rising stocks and falling bonds can turn a 60/40 mix into 66/34, and the pie may not show why. The breakdown on a brokerage statement, retirement account or fund fact sheet is a summary built by someone else's rules: what counts as "other," whether a target-date fund is shown as one line or split into its parts, and how old the holdings data are. This guide walks through each bucket, the SEC filings behind the numbers, what 40% in bonds can hide about interest-rate risk, why cash can print as a negative number, and how money market funds and bank sweeps are protected differently. Worked examples show drift after a market move and a three-account household total.

Reversing 26 years of actual returns turned a 4% retiree's $1.22 million ending balance into $2.63 million. Without withdrawals, the order of annual returns makes no difference to where a portfolio ends up; once money starts coming out, early losses cost far more than late ones. A ten-year worked example with identical average returns puts numbers on the gap, and a test on actual 2000 to 2025 stock and Treasury returns, run forward and in reverse, shows how big it can get. Also covered: the exact conditions behind William Bengen's 1994 research that became the 4% rule, how RMDs and Social Security timing interact with the risk, the trade-offs of six ways to reduce it, and a short stress test for your own withdrawal rate.

A 1% yearly fee leaves a lump sum about 26% smaller after 30 years, whatever the market returns. That figure comes from one line of arithmetic, and the same line explains why a fund expense ratio, an advisory fee and a platform charge multiply rather than add, why regular savers lose a smaller share than lump-sum investors, and why the extra return needed to justify a higher fee is larger than the fee gap itself. The worked tables use a stated 6% gross return and a 4% real return as assumptions, not forecasts, and end with the sustainable withdrawal a fee removes in retirement plus a short checklist for running the numbers on an actual account.

Few top-quartile stock funds stay on top three years running, and a decade of returns rarely proves skill. The familiar fine-print warning has a legal source: SEC Rule 482 requires it in fund ads, and the SEC Marketing Rule sets separate performance conditions for advisers. S&P's Persistence Scorecard shows how seldom top-ranked funds repeat, measured against the 25%, 6.25% and 0.39% that pure chance would give, and how much the result swings by category and time window. A simulation of 1,000 zero-skill funds shows how many look like stars by luck alone, and a short formula shows why proving a 1% edge can take a century. The last part covers the past data that does carry forward: costs, turnover, volatility and style.

All-weather portfolios balance risk across four settings, and 2022 showed where that can fail. The idea began at Bridgewater Associates in the 1990s and has since been simplified into fixed-percentage mixes that behave differently from the original. This guide separates the three, then runs a hypothetical example showing a 60/40 portfolio drawing about 90% of its risk from stocks while an equal-risk mix spreads it evenly. It compares calendar-2022 returns of stocks, 10-year Treasuries, gold and bills from Damodaran's published data, summarizes Federal Reserve research on why the stock-bond relationship flips sign, and ends with a checklist for judging any all-weather mix before committing money.

The same two funds can end up $15,641 apart after 20 years, depending only on which account holds each one. A US worked example compares bonds in a traditional IRA with stocks in a taxable account, and the reverse. It states every assumption: 24% ordinary rate, 15% long-term rate, annual dividend tax, a sale at the end and IRA withdrawals taxed at 24%. The article then shows where the ranking can reverse, as with a Roth IRA or tax-exempt bonds, and how wash-sale and holding-period rules limit the shortcut. It closes with a checklist built around Form 1099-DIV.

Four index funds, one stock: how NVIDIA reaches 11% of a portfolio when no single fund holds it at 11%. This guide works through a look-through calculation using four published holdings files dated October 14, 2026: an S&P 500 fund, an S&P 500 growth fund, a technology sector fund and a broad market fund. It shows how to add one company's weight across funds, how to measure the overlap between two funds as the sum of the smaller weights, where fund holdings are published (fund websites and SEC Form N-PORT filings on EDGAR), and how the 25% diversification test for regulated funds applies to one fund but not across several. A short checklist at the end lets a reader repeat the check on their own funds.

A 20% drop needs a 25% gain to recover, and in four S&P 500 drawdowns recovery outlasted the fall. Drawdown is the percentage decline from a portfolio's highest value to a later low, and it is measured again after every new high. This guide shows the formula, a hypothetical 24-month example worked month by month, and the recovery arithmetic behind the number. It then compares four S&P 500 drawdowns computed from daily closes, with the days each one took to fall and to recover. It also explains why max drawdown depends on the data frequency, on whether dividends are included and on the length of the record, and ends with a checklist for reading a drawdown figure on a fund page or dashboard.

From 1928 to 2025, T-bills earned 0.33% a year after inflation and lost buying power in 40 of 98 years. That is the price of the three jobs cash does in an invested portfolio: paying for withdrawals and rebalancing, keeping money ready to deploy, and softening bad years. Using 98 years of return data, a 10% cash slice in a 60/40 mix trailed the fully invested version in all 69 rolling 30-year periods. Dated rates from the Fed, FDIC and Crane Data show the average bank savings account paying 0.37% while money market funds paid about 3.4% to 3.7%. The guide also covers how FDIC, SIPC and money fund rules protect each kind of cash, and runs two worked examples: $50,000 left in cash for 10 years, and $40,000 in a low-paying sweep.

A three-fund mix costs about $35 a year per $100,000 and leaves out TIPS, cash and foreign-currency bonds. A three-fund portfolio combines a total US stock market fund, a total international stock fund and a total US bond fund. This guide shows what each index covers using dated fund and index fact sheets, what stays outside the three (inflation-linked bonds, cash, foreign-currency bonds), and how the blended expense ratio is calculated. A worked example takes an illustrative 60/24/16 mix through two stated one-year scenarios, shows the drift, and works out the trades that bring it back to target, including the no-sale option of directing new money. It closes with a short checklist for reading a fund's own fact sheet.