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Investing $100 a month in SoftBank Group since 2017: worth today

Every lump sum scenario for SoftBank Group, start year by start year, using real prices and each month's exchange rate.

Prices updated on September 21, 2026

If I had invested $100 every month in SoftBank Group since January 2017, today I would have $37,332

Value in September 2026
$37,332
×3.19
Invested
$11,700
117 monthly contributions
Gain
+$25,632
Annual return (IRR)
+22.6%
compounded, over 9.8 years
010K20K30K40K50K20172019202120232025
SoftBank GroupMSCI WorldUS Treasury billsAmount invested

Over the same period

SoftBank Group
$37,332
The same amount in the MSCI World
$21,936
In US Treasury bills
$13,706
Amount invested
$11,700

Worst moment: −63.5% between February 2021 and September 2022. To get this result, you had to hold on without selling.

What happened

$100 invested every month in SoftBank Group since January 2017, $11,700 in total, would be worth $37,332 in September 2026, an annual return of +22.6%.

It was not a straight line: between February 2021 and September 2022, SoftBank Group lost −63.5% of its value. The result above assumes you held everything through that fall.

That beats the same investment in the MSCI World, which would have returned $21,936: the bet on SoftBank Group paid off over this period.

Left in US Treasury bills, the money would have grown to $13,706.

Best calendar year: 2025 (+92.3%). Worst year: 2021 (−39.6%).

SoftBank Group, other start years

Every SoftBank Group scenario →

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Before you have regrets

What this calculation does not tell you.

Hindsight bias

Picking Nvidia or Bitcoin today means picking known winners. Back then, nothing set them apart from hundreds of assets that went nowhere or vanished.

Holding on was the real test

The result assumes you never sold, including through the drawdowns shown above. Very few investors actually do.

The broad market, no bet required

The MSCI World never makes headlines, but it does not require guessing the winner. It is the fairest yardstick for any pick.

Past performance, computed from monthly closing prices (intra-month lows are smoothed out). Converted at each month’s exchange rate; no fees, no taxes. The MSCI World benchmark is the price index, excluding dividends. Not investment advice. NokxiHub.