1. Choose the asset and dates
Select one stock or index and a historical period supported by the dataset. The simulator uses monthly closing-price data inside that range.
Stock Investment Simulator
Historical stock and index simulations with plain-English explanations.
Main Tool
Market News
Updated every morning. Headlines are sourced from Finnhub and are for context only — not investment advice.
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How It Works
The goal is to answer a simple question clearly: if you had invested in a given stock for a given period, what would the historical result have looked like?
Select one stock or index and a historical period supported by the dataset. The simulator uses monthly closing-price data inside that range.
You can model a one-time starting deposit, recurring monthly contributions, or a combination of both to match how many people invest in practice.
The output separates total cash invested from estimated portfolio value so it is easy to see contribution size, gain, and accumulated shares.
Historical monthly price changes, date-range filtering, lump-sum investing, and recurring monthly buys.
Taxes, dividends, fees, slippage, spreads, account rules, and any prediction about what happens next.
Use the simulator as a learning and planning aid. Verify taxes, fees, dividends, and suitability with primary sources or a qualified professional before acting.
Original Findings
The numbers below come from the same monthly closing-price CSVs that power the simulator above. They cover Jan 2010 through Apr 2026 (PLTR from Sep 2020). Every figure can be reproduced by running the simulator with a $0 starting deposit and zero monthly contribution over the same range — the simulator will report the equivalent multiple.
1,119.90 → 6,575.32
5.9× total return over 16.25 years. Compounded growth: roughly 11.5% per year. Useful as the "do nothing clever" benchmark for the other assets on this page.
$0.35 → $175.75 (split-adjusted)
About 498× over 16 years, or roughly 47% CAGR. Almost all of this was concentrated in a few multi-year stretches; flat decade ranges exist in the dataset.
$1.59 → $381.26 (split-adjusted)
Roughly 240× since June 2010, about 41% CAGR. Drawdowns of more than 50% appear multiple times — the simulator lets you land on each one.
1,696 → 5,479
3.2× over the same 16 years, around 7.5% CAGR. A direct counter to the assumption that "stocks return ~10% everywhere" — geography matters.
23,100 → 897,000 KRW
About 39× since 2010, near 25% CAGR, but with cyclical drawdowns tied to memory pricing. A useful test case for "high-CAGR, high-pain" stories.
$9.50 → $146.49
15× since Sep 2020, around 65% CAGR. A reminder that a 5-year window flatters whichever asset you pick — the simulator surfaces this when you stretch the date range.
These are descriptive statistics drawn from public monthly closes — not forecasts. Past compounding rates do not repeat. Use the simulator above to test your own dates and contribution sizes; identical inputs always reproduce these numbers.
Why This Helps
A useful simulator should help readers test realistic decisions, not just show a chart.
Use the initial investment field to model a one-time deposit into TSLA, NVDA, AMD, PLTR, the S&P 500, or Korean market datasets.
Test dollar-cost averaging by applying a fixed monthly contribution and comparing the final value with total capital invested.
Run the same stock with multiple date windows to see how starting period and holding length can change the historical result.
Supporting Guides
The simulator is the main feature. These articles help readers interpret outcomes responsibly and build better investing habits.
Set a contribution amount that fits your budget and time horizon before comparing stock outcomes.
Learn when recurring investing helps and when it can still leave you exposed to valuation and concentration risk.
Use a checklist before turning a good-looking simulation into a real trade or position.
Test a stock or index over a chosen historical period and review how the simulator handles dates, starting deposits, and monthly contributions.
Browse 20 practical educational articles on risk, valuation, diversification, earnings, and long-term portfolio habits.
Resource Library
Every article below is publicly linked for readers and search engines. The full library page also includes summaries.
Want the full library view in one place?
Open Resources PageFAQ
No. The calculator uses historical monthly data only. It shows what happened in the past for the selected period.
Yes. Contributions are modeled as if they can be allocated proportionally at each monthly close so the tool can estimate accumulated shares and ending value.
Because real investing includes taxes, dividends, fees, spreads, execution timing, and account-specific rules that are outside this baseline model.
No. This site provides an educational calculator and supporting content, not personalized investment recommendations.
Trust And Transparency
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