What was Arm's compound annual growth rate (CAGR) since 2025?

Arm's CAGR from 2025 to September 2026 was 61.4% per year. For comparison, the S&P 500 has historically averaged around 10% annually. Arm significantly outperformed traditional equity markets on an annualized basis.

How does Arm compare to the S&P 500 since 2025?

The same $1,000 invested in an S&P 500 index fund in 2025 would be worth approximately $1,332.93 today. Arm outperformed the index by $970.42 — 1.73x the return of the S&P 500.

How much of the Arm gain would you keep after taxes?

Sold today, the $1,303.35 gain would be a long-term capital gain for US federal tax. At the 15% rate most people pay, you'd keep about $2,107.85. At the top rate of 23.8% (20% plus the 3.8% net investment income tax) you'd keep about $1,993.16, and lower incomes pay 0%. State tax is extra, and gains inside a Roth IRA aren't taxed.

What is the inflation-adjusted return on $1,000 in Arm since 2025?

Adjusted for cumulative US inflation since 2025, the real purchasing-power value of the Arm position is approximately $2,260.96 in 2025 dollars. Inflation shrinks the gain, but the investment still grew faster than prices.

How did Arm perform in 2025?

Arm fell 11% during 2025, from $128.20 at the start of the year to $114.73 at the start of 2026.

What If You Invested $1,000 in Arm in 2025?

Q: Did Arm pay dividends?

No. Arm paid no dividends over this period, so the whole return came from its share price.

Try your own numbers

If I had putintoat the start of…

it would be worth today

$2,303

+$1,303 profit2.30x61.4% a year

The same $1,000 in an S&P 500 index fund: $1,333

Aftertax on the gain, you’d keep$2,108

US federal long-term rates: 15% for most people, 0% on lower incomes, 20% + 3.8% on high incomes. No state tax included; none inside a Roth IRA.

Compare with

Growth Over Time

Performance Metrics

Total Invested

$1,000.00

Current Value

$2,303.35

Total Profit

$1,303.35

Multiplier

2.30x

CAGR

61.4%

Max Drawdown

-38.0%

Inflation-Adjusted

$2,260.96

Benchmark Comparison

How does $1,000.00 invested in 2025 compare across different asset classes?

Asset	Value Today	Return
Arm	$2,303.35	2.30x
S&P 500	$1,332.93	1.33x
Gold	$1,601.07	1.60x
Savings (2% APY)	$1,035.13	1.04x

Dividends

Arm paid no dividends over this period, so the whole return came from its share price.

Dividends from Yahoo Finance. Shares today assume every dividend was reinvested.

Back in 2025

In March 2025, Arm signed an agreement with the Malaysian government to bolster the country's chip design ecosystem. techcrunch.com
In 2025, a gallon of gas averaged $3.10 and the new iPhone 17 Pro started at $1,099. eia.gov apple.com
During 2025 itself, Arm fell 11%, #86 of the 114 investments we track. The best was Robinhood (+192%); the worst was Polkadot (−73%). Full 2025 results →

$1,000 in Arm, year by year

Of the 114 investments we track that were available at the start of 2025, Arm ranks #10 by growth to today, near the top — just behind TSMC and ahead of Palo Alto Networks. See the full 2025 ranking →

Arm started 2025 at its highest start-of-year price up to then, after rising 86% in 2024. It was worth less than the $1,000 put in at the start of 2026, and is back above it today. Today's $2,303 is more than it was worth at any January since. It trailed the same $1,000 in the S&P 500 at the start of 2026 but is ahead of it today. Month by month, the deepest fall ran from Oct 2025 ($1,332) to Jan 2026 ($826.37), a drop of 38%. At its lowest month-end, in Jan 2026, it was worth $826.37.

When	Worth	Change	S&P 500
Start of 2025	$1,000	—	$1,000
Start of 2026	$895	−11%	$1,179
Today	$2,303	+157%	$1,333

Values at the start of each year (first trading day for stocks). The S&P 500 column includes reinvested dividends, like the stock values.

Historical Context

At the start of 2025, Arm was priced at $128.20 (adjusted for later splits and dividends). $1,000 would have bought about 7.80 shares. Arm designs the processor architecture used in most smartphones. It listed in September 2023.

Frequently Asked Questions

A $1,000 investment in Arm at the start of 2025 would be worth approximately $2,303.35 today — a 2.30x return ($1,303.35 profit) over 1.7 years.

Methodology & Sources

Price data: Historical prices are the closing price on the first trading day of each year, adjusted for splits and dividends (so returns assume dividends were reinvested), from Yahoo Finance and MacroTrends. Current prices come from Yahoo Finance and refresh hourly; if that source is unavailable, the last saved price is used.

Calculation: Assumes a single purchase at the start of 2025 (or the first trading day, for companies that listed that year), held until today. No transaction fees, taxes, or slippage are included.

Benchmarks: The S&P 500 comparison uses the S&P 500 Total Return index (dividends reinvested, like an index fund) at the start of2025 and today. Gold uses the price per troy ounce. Savings account assumes a 2% APY compounded annually.

Inflation adjustment: Uses U.S. CPI-U annual averages from the Bureau of Labor Statistics. The 2026 CPI value is estimated.

Educational purposes only. Past performance does not guarantee future results. Not financial advice.