KOUSOURIS
As an investorAs an entrepreneur
Let's collaborate
eToro Popular Investor · EliteForbes 30 Under 30 GreeceEntrepreneur

KonstantinosKousouris

I invest for the long run in undervalued, resilient businesses around the world, and I explain every move in public. More than 2,100 investors in 63 countries copy my portfolio on eToro.

As an investor →Track record since 2023, copiers, scores and how I pick stocksAs an entrepreneur →Companies I built, teaching, mentoring and the lessons behind them
See my eToro portfolio →Let's collaborate

Copy Trading is not investment advice | Capital at risk | Past performance does not guarantee future results

Konstantinos Kousouris
Popular InvestorElite
eToro risk score4/10
Copiers2,120
+154%
Stock market return since January 2023
S&P 500, same period: +100%
2,120
Investors copy my portfolio
in 63 countries
$2.6M
Assets copying my portfolio
eToro assets under copy · eToro, Oct 21, 2026
8.9/10
BullAware score
Last 3 years, out of 10

Performance data as of October 21, 2026. Source: BullAware, based on public eToro data.

  • Forbes 30 Under 30 Greece
  • 2023 +25.2%
  • 2024 +33.4%
  • 2025 +31.2%
  • 2026 so far +15.9%
  • 2,120 copiers
  • 63 countries
  • BullAware 8.9/10 · 3Y
  • Naftemporiki TV
  • Startupbootcamp Amsterdam
  • Study UK Global Finalist
On stage at TNW Conference, Amsterdam
On stage at TNW Conference, Amsterdam
Filming the Cardiff University alumni film
Filming the Cardiff University alumni film

Stock market track record

My stock market returns by year since 2023

Full track record and scores →

Returns by calendar year

* 2026 is year to date. S&P 500 data to Aug 2026.

My portfolioS&P 500
+25.2%+24.0%2023+33.4%+23.4%2024+31.2%+16.4%2025+15.9%+12.3%2026*
+153.8%
Total return since Jan 2023
+27.8%
Per year, annualised
8.9/10
BullAware score
-10.9%
Largest drop (month-end)

Performance data as of October 21, 2026. Source: BullAware, based on public eToro data.

Start here

Videos that explain how I think

All interviews and press →
Gen Z and the stock market: how young people are changing the way they investTV6:58
Naftemporiki TV

Gen Z and the stock market: how young people are changing the way they invest

2,153 views · Mar 12, 2026 · 6:58 · Greek
Watch ↗
How I pick stocks: antifragility, diversification and when to sellInterview52:56
Philip Tzimopoulos

How I pick stocks: antifragility, diversification and when to sell

2,334 views · Apr 8, 2026 · 52:56 · Greek
Watch ↗
Pitching Blink to investors, livePitch58:07
EquityMatch Pitch Events · Europe

Pitching Blink to investors, live

Dec 19, 2023 · 58:07 · English
Watch ↗

Trust

2,120 investors copy my portfolio

Copiers map and full details →

Copiers put their own money behind my decisions and can stop whenever they want. For an investor, it is the most honest vote of confidence there is.

+111%
more copiers than 12 months ago
#29
most copied among eToro's Elite Popular Investors (BullAware ranking)
63
countries, on every inhabited continent

Copiers since January 2025

Daily number of investors copying my portfolio.

01K2K3KJan 25Apr 25Jul 25Oct 25Jan 26Apr 26Jul 26Oct 262,120

Top 8 countries

  1. United Kingdom403
  2. Germany238
  3. Italy231
  4. France194
  5. Australia109
  6. Netherlands108
  7. Spain103
  8. Greece80

Sources: BullAware ranking and copier data (October 21, 2026); eToro annual report, Form 20-F, 2025.

Three things worth knowing

+154%

Public, verified track record

Every trade I make is visible on eToro and analysed independently by BullAware. Nothing on this site is self-reported.

Read more →3

Built companies, not just portfolios

Blinko AI, Blue Banana and Innovation Academy taught me how businesses really work. I read every company like an operator.

Read more →Forbes

Recognised by people who check

Forbes 30 Under 30 Greece, the British Council and Cardiff University, with interviews on Naftemporiki TV and leading Greek podcasts.

Read more →

Business

Companies I built

The entrepreneur in full →
Pitching Blink at Startupbootcamp, Amsterdam
Co-founder & CEO · 2022-2025 · formerly Blink

Blinko AI

An AI money assistant that banks could offer young customers under their own brand. We took it from a university idea to a funded fintech.

Blue Banana, Poseidi, Halkidiki
Co-founder · since 2025

Blue Banana

The most viral beach bar in Greece: the student beach bar inside the Aristotle University camping at Poseidi, Halkidiki.

Recognition

Awards that others gave

All awards and credentials →
Forbes 30 Under 30 Greece
2024

Forbes 30 Under 30 Greece

2024 list, Technology category, as co-founder of Blink.

Study UK Alumni Awards
2024

Study UK Alumni Awards

British Council. Global Finalist for Europe, Business and Innovation, and national finalist in Greece.

Cardiff University 30(ish) Awards
2024

Cardiff University 30(ish) Awards

Entrepreneurship category, celebrating inspiring young alumni.

GSEA Greece · Silver
2025

GSEA Greece · Silver

Entrepreneurs' Organization. Silver award as mentor of the second-placed student founder.

Copy trading

Copy my portfolio in three steps

1

Choose an investor

Every Popular Investor on eToro has a public profile: returns, risk score, holdings and copiers. Mine is Le_kousou.

2

Pick an amount

From $200. Your money mirrors the portfolio in proportion: if 5% of my portfolio is in a stock, 5% of your copy amount goes there too.

3

Stay in control

You can pause, add or withdraw funds, or stop copying at any time. Copied trades use eToro's standard fees. You never pay me.

Copy on eToro →Take the quiz

Copy Trading is not investment advice | Capital at risk | Past performance does not guarantee future results

I earn a commission if you sign up using my link. #eToroAffiliate

Work with me

How I can help

See all options →
Free for universities and schools · companies on request

Talks and keynotes

Free · 15-minute call

Journalists and content creators

Free · 15-minute call

Company and brand partnerships

€60 per hour

Mentoring for founders

Free for universities and schools · companies on request

Workshops and courses

From $200 · you never pay me

Copy trading on eToro

About

From Thessaloniki to 63 countries

I grew up in Thessaloniki and moved to Cardiff at 17 to study Business Management. I ran my first online store as a teenager and co-founded the fintech Blink at university, taking it through incubators in Helsinki, a National Bank of Greece award, Forbes 30 Under 30 and Startupbootcamp in Amsterdam.

Today I invest for the long run on eToro, where more than 2,100 people copy my portfolio. I co-run Blue Banana in Halkidiki and teach entrepreneurship through Innovation Academy. Building companies and investing in them feed each other: the operator in me checks the investor, and the investor keeps the operator honest.

Konstantinos Kousouris

Milestones

  1. 2021Graduated from Cardiff University. Started my public eToro track record in June.
  2. 2022Co-founded Blink. University of Helsinki Compass pre-incubator. HarvardX certificate.
  3. 2023National Bank of Greece Business Seeds award. 2nd at GSEA Greece. Named to Forbes 30 Under 30 Greece.
  4. 2024Raised funding at Startupbootcamp in Amsterdam. Study UK Alumni Awards Global Finalist. Cardiff University 30(ish) Award.
  5. 2025Built Blue Banana, the most viral beach bar in Greece. Silver mentor award at GSEA Greece. Passed 1,000 copiers.
  6. 2026Passed 2,000 copiers and $2.7M copying my portfolio. Interviews on Naftemporiki TV and leading Greek podcasts.

Contact

Let's talk

For talks, mentoring, workshops or collaborations, email me or book a call. I reply to every serious message.

LinkedIn ↗Instagram ↗YouTube ↗eToro ↗BullAware ↗

Book a call →My eToro portfolio

Copy Trading is not investment advice | Capital at risk | Past performance does not guarantee future results