Screen by real-world outcomes like emission reductions, fair labor or resource efficiency.
Filter to fit your values: exclude fossil fuel, tobacco, Gaza involvement or single use plastic.
Three tabs. One excludes what you won't hold, one filters on impact scores, one filters on hard metrics.
What should never appear in the results.
Where a company should be doing well.
Hard numbers, not ratings.
The Exclusions tab filters out specific harm categories: fossil fuel, vice stocks, alcohol, gambling, Gaza involvement, deforestation and fur.
The Scores tab filters by positive impact dimensions: Climate Action, Fair Labor, Accountable Institutions, Affordable Healthcare.
The Metrics tab filters by hard data: Carbon Intensity (Scopes 1–3), Global Warming Potential, Net-Zero Target Date, CEO-to-median worker pay ratio, Fines and violations per $M revenue.
The screener is the first step. The same impact data follows your holdings once you own them.
→ How to Screen for Net-Zero Companies
Set exclusions, add impact thresholds, require a Ziggma Stock Score floor. Save the screen and it re-runs as the market moves.
Open the screenerRun a Portfolio Checkup to see how a candidate changes your concentration, quality, risk and impact before you buy.
See the Portfolio CheckupThe Impact X-Ray shows Global Warming Potential and impact distribution across every connected account, updated monthly.
See the Impact X-RayAn ESG rating measures what the world does to a company. An impact rating measures what a company does to the world.
Ziggma exposes impact scores, not ESG ratings. And it surfaces the underlying data for transparency and accountability. See how ESG and impact investing differ →
That transparency is what ACA Ethos impact data makes possible: 600 metrics, 80 topic-level scores, monthly updates and daily controversy monitoring. All of it sits behind the sliders in the filter panel.
It measures how sustainability issues threaten the company’s own financial position. Useful to a risk desk. It says nothing about the company’s effect on anyone else, and two firms can score the same for opposite reasons.
It measures outcomes the company produces: emissions trajectory, labor practices, harm-category revenue, controversies. Ziggma shows the underlying metric, not just the number on top of it.
An impact stock screener filters stocks by measured real-world outcomes rather than aggregate third-party ratings.
It lets investors exclude companies that conflict with their values, such as fossil fuels, weapons and human rights controversies, and surface companies that meet positive impact thresholds like strong climate action scores or verified net-zero commitments.
Ziggma's free stock screener combines impact filters with financial quality scores, so both dimensions are visible in the same view.
MSCI and Sustainalytics produce aggregate ESG ratings, a single score that blends dozens of factors into one number.
The methodology is opaque, and two companies can score identically for opposite reasons.
Ziggma does not expose third-party ESG ratings. It surfaces the underlying data instead: Global Warming Potential, carbon intensity across Scopes 1–3, net-zero target dates, CEO-to-median worker pay ratios, and harm-category exclusion flags.
ESG and impact investing are not the same thing, and Ziggma is built around the latter.
Ziggma partners with ACA Ethos for impact data.
ACA Ethos covers 600+ metrics across climate action, resource use, fair labor, accountability, and controversy monitoring.
Key data points include Scope 1, 2, and 3 carbon intensity, Global Warming Potential temperature alignment, net-zero target dates, renewable energy exposure, CEO-to-worker pay ratios, and fines per $M revenue.
Data is updated monthly, with daily controversy monitoring. Learn how Ziggma's impact data works →
The Ziggma Impact Score is a 0–100 rating of the real-world impact a company creates, powered by ACA Ethos data. It is not an ESG rating. An ESG rating measures how sustainability issues affect a company's own financial risk. The Ziggma Impact Score measures the effect the company has on the world outside it.
It aggregates climate action, fair labor, accountable institutions, affordable healthcare, controversy levels, and privacy and data management into a single score. A Ziggma Impact Score above 70 indicates strong positive impact.
The Impact Score is one of the filter dimensions in the Ziggma screener, and is also visible in the Portfolio Checkup for every holding in your connected accounts.
Yes. Ziggma's screener runs financial and impact filters simultaneously in real time.
You can require a minimum Ziggma Score of 70 and a minimum Impact Score of 60 in the same screen, exclude fossil fuel companies, and filter for a net-zero target date, all at once.
The Ziggma Stock Score covers valuation, growth, profitability, and financial health.
Both dimensions update the results instantly as you move the sliders.
The Fossil Fuel Free preset excludes companies with material revenue from oil, gas, and coal extraction or production.
It is based on ACA Ethos harm-category data and applies as a single-click exclusion filter.
Companies with incidental fossil fuel exposure, such as a conglomerate with a small legacy energy division, may still appear depending on the materiality threshold.
For a step-by-step guide, see how to build a fossil-free portfolio.
Global Warming Potential (GWP) is the implied temperature alignment of a company's emissions, expressed in degrees Celsius of projected warming.
A GWP of 1.5°C indicates alignment with the Paris Agreement target. A GWP of 3°C or higher signals material climate misalignment.
In Ziggma's screener, you can set a maximum GWP threshold to filter out companies above your chosen warming level.
GWP is also visible at the portfolio level in Ziggma's climate impact analysis, showing the aggregate temperature trajectory of all your holdings.
Ziggma's Metrics tab includes three complementary filters for net-zero screening: Net-Zero Target Date (a declared commitment), Global Warming Potential (the current emissions trajectory), and Carbon Intensity Change % (whether emissions intensity is improving year-over-year).
A company with a 2040 net-zero target, a GWP below 2°C, and declining carbon intensity is a meaningfully stronger signal than a target date alone.
Most sustainable investing platforms focus on either stock screening or portfolio tracking, not both.
Ziggma combines a full impact screener with portfolio-level climate analysis, a Portfolio Checkup, and multi-account aggregation in one tool.
The screener covers 10,000 stocks and ETFs with ACA Ethos impact data. The portfolio side shows Global Warming Potential, Impact Score, and Impact Distribution across every connected account.
Ziggma's free stock screener includes access to preset impact screens and basic financial filters.
Full impact data, including ACA Ethos metrics, GWP sliders, carbon intensity filters and net-zero target date filters, is available on paid plans.
A 7-day free trial gives access to all features with no commitment. See Ziggma's pricing plans →
How to actually move the needle. Why public markets are where real impact happens, and how to act on it.
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