Retirement Edge launches October 1. Reserve with your email now — 20% off your first year is yours if you complete your trial signup by 5:00 PM Eastern, October 1.Reserve your spot →
Alpha Edge seal
Retirement Edge  ›  Calculators  ›  Investment Calculator

Can You Build a Better Index Portfolio?

See what your investments could grow into by the time you retire. Choose your own mix, run the numbers, and watch your future balance take shape. Your results are based on how that same allocation performed over the last 20 years.

Free Retirement & Investment Calculator — No Sign-Up Required

Build Your Own Investment Portfolio.

Your information
Your allocation
Try a portfolio:
Total: 100% — Balanced ✓
Your Projection
Alpha Edge Model
Analyzing your portfolio…

† Projections use 20-year CAGRs (Jan 2006–Dec 2025) sourced from Portfolio Visualizer. Alpha Edge backtested CAGR: 19.96%. Your allocation uses weighted-average historical returns. Backtested results are hypothetical. Past performance does not guarantee future results.

✓ Projection done  ·  Step 2 of 2 — Stress-test it

See how this allocation survives a crash.

You've seen the upside. Now see how it holds up through the market's worst shocks. 200820202022 — your allocation carries straight over.

Founding Member Rate · Ends October 1 Start your 60-day free trial — then 20% off, all year. Free to sign up now. A few days before the October 1 launch we’ll email you to start your 60-day free trial — no charge during the 60 days. Cancel any time during the 60 days and you’re never charged. On day 61 your one-year subscription begins at 20% off your first year, and the founding rate disappears the day we open to the public.
Start My Free Trial →

Estimates based on 20-year backtested data · Portfolio Visualizer · Past performance does not guarantee future results.

Which allocation will you choose?

After 2 runs, you've explored a range of allocations. The numbers shift with each combination — keep adjusting until you find the allocation that feels right. When you're ready, see how the Alpha Edge model compares — and reserve your spot for launch.

Start Free Trial — 20% Off Explore Alpha Edge
Why It Outperforms

Three reasons buy-and-hold index investing underperforms.

The index fund industry is built around a simple premise: stay invested, diversify broadly, and hold. That works — until a bad market cuts your portfolio in half. Alpha Edge is built around a different principle.

01

Buy-and-hold absorbs all the losses

In 2008, the S&P 500 dropped 37%. A 60/40 portfolio dropped 22%. Alpha Edge's model rotated away from equities before the worst periods — finishing the year positive.

02

Recovery from big losses takes years

A −37% loss requires a +59% gain just to break even. By avoiding the worst years, the model spends more time compounding at positive rates — which is where the long-term advantage builds.

03

Discipline beats emotion every time

Most investors panic-sell at bottoms and buy back in too late. A rules-based monthly update removes emotion from the equation entirely — one monthly update, one trade, done.

How It Works

One monthly update. One trade. Once a month.

Alpha Edge runs disciplined, rules-based research and distills it into one clear action. No complex decisions. No watching the market daily. Approximately five minutes per month.

1

Monthly Update Published

On the first trading day of each month, Retirement Edge publishes the Alpha Edge update — which index ETF to hold this month.

2

You Review It

Log into your dashboard. See the update and the reasoning behind it. Most months, no change is needed — you simply hold.

3

Act in ~5 Minutes

When a change is called for, log into your brokerage account and make one trade. You're in control of every decision from start to finish.

Why Monthly?

Not too fast. Not too slow. Just right.

Daily trading creates noise — annual rebalancing misses the shift

Monthly updates sit in a sweet spot: frequent enough to respond to real market regime changes, but infrequent enough to avoid whipsawing on short-term noise. The model typically changes allocations only three or four times per year.

That means most months you simply hold — no action needed. And when the model does call for a change, you act once and move on. No monitoring required in between.

Learn the Full Methodology →
~3–4×
Changes per year on averageMost months require no action at all
19.96%
Backtested annual growth rateCompound Annual Growth Rate (CAGR) — the steady, compounded yearly rate that grows your starting amount to the ending amount. (Jan 2006–Dec 2025)vs 10.98% for VFIAX (Vanguard 500 Index)
−15.4%
Max drawdown (backtested)vs roughly −55% for the S&P 500 in the 2008–09 crash
20-Year Market History

How the model navigated every major market event.

Alpha Edge has backtested data through the biggest market crises of the past two decades. Here's how it performed when buy-and-hold strategies were at their worst.

2008
The Global Financial Crisis

The S&P 500 lost 37%. Most target-date and lifecycle funds fell 20–40%. The Alpha Edge model's rules-based rotation moved away from equities before the worst of the collapse.

Alpha Edge: Positive year
2009–2019
The Long Bull Run

A decade of nearly uninterrupted growth. Buy-and-hold investors did well — but the model's rotation toward the highest-performing index ETF each month compounded significantly faster than passive allocation.

Alpha Edge: Double-digit annual growth
2020
COVID-19 Market Crash

In March 2020, the S&P 500 fell 34% in 33 days — the fastest bear market in history. The model's monthly update rotated to a defensive position ahead of the steepest portion of the decline.

Alpha Edge: Positive year (+strong recovery)
2022
The Rate Hike Bear Market

Both stocks and bonds fell sharply in 2022 — a rare simultaneous decline that hit even conservative portfolios hard. The model rotated into non-correlated assets including gold and money market instruments.

Alpha Edge: Positive year
2006–2025
Full 20-Year Period

Across the full backtested period including all four major corrections, Alpha Edge has not recorded a single losing calendar year — with a 19.96% backtested CAGR vs 10.98% for VFIAX (Vanguard 500 Index).

Alpha Edge: 19.96% CAGR · Zero losing years

Want the full performance dashboard?

Annual returns, rolling returns, drawdown chart, risk vs return scatter, and the complete backtest dataset.

Explore Alpha Edge →
Questions

Common questions about index investing & this calculator.

Yes. Because the calculator projects how a portfolio of index ETFs grows over time, it works for a Roth IRA, a traditional IRA, or any taxable brokerage account. Enter your current balance and annual contribution, set your allocation, and compare your allocation to the Alpha Edge model — the same way you'd use any retirement or Roth IRA calculator. The projection is identical regardless of account type; the difference is how withdrawals are taxed later.

An index investing calculator projects how a portfolio of index ETFs would grow over time using historical return data. This tool compares your chosen allocation to Alpha Edge's backtested 20-year return, so you can see the gap between passive buy-and-hold and a rules-based rotation approach.

Very few buy-and-hold strategies beat the S&P 500 over long periods after costs — and the ones that do typically take on more risk. Alpha Edge takes a different approach: instead of holding more aggressive assets, it rotates into the best-performing index category each month, avoiding the worst downturns. Its backtested 19.96% CAGR vs 10.98% for VFIAX (Vanguard 500 Index) over Jan 2006–Dec 2025 reflects that difference. Past performance does not guarantee future results.

The calculator uses historical CAGR data sourced from Portfolio Visualizer for January 2006 through December 2025. It projects growth using a constant annual rate for each asset class — so it's a useful illustration of long-term compounding differences, but not a precise prediction. Real returns vary year to year and may be negative. Always treat projections as hypothetical illustrations, not forecasts.

Alpha Edge is a rules-based monthly update service from Retirement Edge. Each month, the model analyzes market conditions and publishes one clear update: which index ETF the model holds this month. You log into your brokerage account, make one trade, and you're done — usually in about 5 minutes. The model uses only everyday index ETFs (QQQ, SPY, bonds, gold, money market) — no options, no leverage, no shorts or derivatives.

This calculator and all content on Retirement Edge is investment research and publishing, not personalized investment advice. Retirement Edge is not a registered investment adviser. We publish research — you review it and make every investment decision independently. (Publisher exemption: Section 202(a)(11)(D) of the Investment Advisers Act of 1940.)

Alpha Edge launches October 1. Reserve your founding rate now — 20% off your first year. We email you a few days before launch to start the trial, and you’re never charged if you cancel during the 60 days. It is offered alongside TSP Edge and 401(k) Edge; start on the pricing page to be first in line when it goes live.

Ready to Learn More?

Explore Retirement Edge — and find the strategy built for your account.

Whether you have a 401(k), a TSP, or a self-directed brokerage account, Retirement Edge has a model portfolio built for you. Start by exploring the home page, or jump straight to the strategy that fits your situation.

Sign up free today. Your founding rate is reserved — lock it in at launch and start your 60-day free trial.

Retirement Edge
Important disclosures. All performance figures reflect a backtest of the Alpha Edge model, sourced from Portfolio Visualizer for January 2006 through December 2025. Backtested performance is hypothetical, does not represent actual trading results, and is shown for illustration only. Backtested results do not reflect fees, taxes, transaction costs, or slippage, which would reduce returns. Past performance is not indicative of future results. The calculator applies constant historical CAGRs for simplicity; actual returns vary year to year and may be negative. Risk metrics (volatility, Sharpe ratio, worst year estimates for user portfolios) are approximations based on historical fund data and are illustrative only. Retirement Edge is not a registered investment adviser. This calculator and all site content constitute investment research and publishing, not individualized investment or tax advice. Publisher exemption: Section 202(a)(11)(D) of the Investment Advisers Act of 1940.