See the true impact of your investments

Make sure your portfolio aligns with your values, without relying on labels or digging through reports. Choose your way to compensate by offsetting, or with impactful lifestyle actions.

Emissions data provided by:

CDP logo in grey

The problem with sustainable investing

Sustainable investing is being greenwashed

Labels like ESG, ‘green’ or ‘climate’ are not standardized and don’t ensure that your investment is as sustainable as you might expect.

Factory Emissions

1/3 of climate-themed funds invest in oil and gas companies (CommonWealth)

Global Warming

72% of ESG funds are misaligned from global climate targets (InfluenceMap)

Finding the true impact of your investments is a lot of work​

Let Lehti do the work for you

Lehti goes beyond the labels by giving you clear and accurate metrics of the environmental impact of your investments as well as raising any red flags based on your personal values.

Step 1

Aggregate your portfolio

Import your trades and get a complete overview of all the holdings in your investment portfolio.

Investments Portfolio Overview
Step 2

View your portfolio’s footprint

Learn about the total carbon footprint of all your investments with a breakdown of individual holdings.

Investments Footprint True Impact
Step 3

See flags for any ESG issues

Set your personal values & preferences and see if any holdings in your portfolio raise red flags.

Investments ESG Flags
Step 4

Compensate as you see fit

Purchase offsetting or make impactful lifestyle changes to reduce your footprint such as using greener modes of transport or switching to a more sustainable diet.

Footprint Impact Compensations

Frequently asked questions

What does Lehti do?

Lehti is a web app that lets you see the true impact of your investments. Firstly, it enables you to aggregate and track your portfolio. Secondly, it shows you its environmental impact. Thirdly, it raises red flags for ESG issues based on your personal preferences. Lastly, it provides you with ways to compensate. You can contribute to offsetting projects, or complete impactful lifestyle actions that reduce your footprint.

What is Lehti’s mission?

Lehti is here to ensure that we invest in a greener tomorrow. It democratises access to carbon footprint data and empowers truly sustainable investing. We strive to educate and empower investors to build portfolios that are better for the planet.

How do you calculate the carbon footprint of investments?

We calculate the carbon footprint of your investments based on the Scope 1 & 2 emissions reported by the companies that you invest in. We acquire the total emissions data from CDP. Then we determine your footprint based on how many shares you own.

Do I have to pay to compensate my footprint?


While you have the option to purchase offsetting to compensate your footprint, Lehti also allows you to take action individually by making impactful changes to your lifestyle. For example, you can switch to a more sustainable diet. We will help you to find these actions, calculate their impact and show you your progress in compensating the footprint of your investments.

Why should I compensate the carbon footprint of my portfolio?

Carbon emissions are the leading cause of climate change. To avoid severe adverse effects linked to global warming, we must significantly reduce these emissions. Each person and organization has a carbon footprint due to the emissions caused by their actions.


When you buy shares, you take ownership in the companies that you invest in. The data that you can see in Lehti can help you align your investments with sustainability and provide you with the awareness needed to push for change.


However, not everyone is able or willing to change their portfolio. For example, investing only in climate-themed investments can make it difficult to diversify. This is where compensations come into play.

Why not just invest in sustainable funds?

Please do. But don’t stop there. Many ESG-labelled or so called “green” funds still invest in oil companies, for example. Lehti goes beyond the labels by giving you a clear metric. The carbon footprint shows you exactly how sustainable your investments are.


Investments that are carbon-neutral or carbon-negative are few and far between. This makes it difficult to build a diversified sustainable portfolio. Don’t let that discourage you from investing though. It is an important tool to safeguard your future financial security. Lehti can help you close the gap and make your existing investments green.

What can I expect from the BETA version?

With Lehti's first BETA version you can check out the carbon footprint of your stock investments in over 500 US & Finnish companies.


Going further you can expect us to add more investment instruments while making it even easier for you to enter your holdings. You can also look forward to ESG flagging and multiple ways to compensate.

More questions?

Send an email to

Funded by the European Union

Make your portfolio truly sustainable