What was Sony's compound annual growth rate (CAGR) since 2015?

Sony's CAGR from 2015 to September 2026 was 16.6% per year. For comparison, the S&P 500 has historically averaged around 10% annually. Sony significantly outperformed traditional equity markets on an annualized basis.

How does Sony compare to the S&P 500 since 2015?

The same $1,000 invested in an S&P 500 index fund in 2015 would be worth approximately $4,565.82 today. Sony outperformed the index by $1,486.56 — 1.33x the return of the S&P 500.

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

Sold today, the $5,052.37 gain would be a long-term capital gain for US federal tax. At the 15% rate most people pay, you'd keep about $5,294.52. At the top rate of 23.8% (20% plus the 3.8% net investment income tax) you'd keep about $4,849.91, 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 Sony since 2015?

Adjusted for cumulative US inflation since 2015, the real purchasing-power value of the Sony position is approximately $4,400.04 in 2015 dollars. Inflation shrinks the gain, but the investment still grew faster than prices.

How did Sony perform in 2015?

Sony rose 21% during 2015, from $3.86 at the start of the year to $4.66 at the start of 2016.

What If You Invested $1,000 in Sony in 2015?

Try your own numbers

If I had putintoat the start of…

it would be worth today

$6,052

+$5,052 profit6.05x16.6% a year

The same $1,000 in an S&P 500 index fund: $4,566

Aftertax on the gain, you’d keep$5,295

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

$6,052.37

Total Profit

$5,052.37

Multiplier

6.05x

CAGR

16.6%

Max Drawdown

-49.0%

Inflation-Adjusted

$4,400.04

Benchmark Comparison

How does $1,000.00 invested in 2015 compare across different asset classes?

Asset	Value Today	Return
Sony	$6,052.37	6.05x
S&P 500	$4,565.82	4.57x
Gold	$3,548.31	3.55x
Savings (2% APY)	$1,261.85	1.26x

Dividends

Price growth alone turned $1,000 into $5,688; reinvested dividends added the other $364.35, 7.2% of the gain.

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

Back in 2015

In October 2015, Sony agreed to negotiate taking over Toshiba's 300mm wafer plant in Oita, Japan, planning to use it mainly to make CMOS image sensors. sec.gov
In 2015, a gallon of gas averaged $2.43, a movie ticket averaged $8.43 and the new iPhone 6s started at $649 without a contract. eia.gov fonearena.com thewrap.com
During 2015 itself, Sony rose 21%, #19 of the 82 investments we track. The best was Netflix (+121%); the worst was Chipotle (−34%). Full 2015 results →

$1,000 in Sony, year by year

Of the 82 investments we track that were available at the start of 2015, Sony ranks #31 by growth to today — just behind AbbVie and ahead of Visa. See the full 2015 ranking →

Sony started 2015 58% below its start-of-2008 high, after rising 21% in 2014. It has been worth more than the $1,000 put in at every January since, and still is today. Its best January was 2026, at $6,697. Today it's 9.6% below that, so selling then would have beaten holding. It rose in 10 of the 11 full years since. It has been ahead of the same $1,000 in the S&P 500 at every January since, and still is. Month by month, the deepest fall ran from Dec 2021 ($6,405) to Sep 2022 ($3,267), a drop of 49%.

When	Worth	Change	S&P 500
Start of 2015	$1,000	—	$1,000
Start of 2016	$1,207	+21%	$1,014
Start of 2017	$1,389	+15%	$1,135
Start of 2018	$2,261	+63%	$1,383
Start of 2019	$2,418	+6.9%	$1,322
Start of 2020	$3,454	+43%	$1,739
Start of 2021	$5,038	+46%	$2,058
Start of 2022	$6,389	+27%	$2,649
Start of 2023	$3,902	−39%	$2,170
Start of 2024	$4,782	+23%	$2,740
Start of 2025	$5,442	+14%	$3,425
Start of 2026	$6,697	+23%	$4,038
Today	$6,052	−9.6%	$4,566

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 2015, Sony was priced at $3.86 (adjusted for later splits and dividends). $1,000 would have bought about 259 shares. Sony makes PlayStation consoles, electronics, music and films.

Measured from one January to the next, Sony's best year since then was 2017 (+63%) and its worst was 2022 (−39%). Holding on wasn't easy: between the start of 2022 and the start of 2023, the position fell 39% from its high.

Frequently Asked Questions

A $1,000 investment in Sony at the start of 2015 would be worth approximately $6,052.37 today — a 6.05x return ($5,052.37 profit) over 11.7 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 2015 (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 of2015 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.