Guy Spier
Zurich-based value investor who ran the Aquamarine Fund from 1997 to 2025 and wrote The Education of a Value Investor. He hosts the VALUEx gathering in Klosters and publishes a podcast and newsletter.
Guy Spier did not write this page. ppll compiled it from their own words, each linked to the source. Is this you? · Report a mistake
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What they believe
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Everyone is capable of great evil, and consciously recognizing that capacity in oneself is protective rather than harmful.
We are all - each and every one of us - capable of great evil, and we are far better of is we recognize it.
guyspier.comSaid 8 Sept 2025This on korrents
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All genuinely intelligent investing is, by nature, sustainable investing.
I had always thought that all "Intelligent Investing" is "Value Investing". And that true value is always sustainable. In otherh words, "All Intelligent Finance is Sustainable Finance."
guyspier.comSaid 2 Jun 2025This on korrents
The bold line is korrents’ wording; the quote is theirs. These 2: what they wrote before what they said aloud, one per source, newest first.
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8 September 2025
From one piece Thoughts on the Conviction of Donna Adelson 3 beliefs · guyspier.com
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Their words
We live in a culture that preaches self‑esteem more than self‑knowledge. That leaves people morally flabby-performing virtue while outsourcing the actual discipline that keeps ordinary humans from doing monstrous things.
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Their words
People who insist they're harmless aren't safe; they're naive. People who know exactly how dangerous they could become-and fear it-are the ones who deliberately yoke that force to good aims.
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Their words
We are all - each and every one of us - capable of great evil, and we are far better of is we recognize it.
9 June 2025
2 June 2025
From one piece Lombard Odier, Oxford University and Sustainable Finance The Remarkable Transformation of a Discrete, Swiss Private Bank 2 beliefs · guyspier.com
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Their words
There is, however, one approach that tops all of them - which the Swiss banking industry has not yet achieved, but is destined to. And that is to become a centre of true investing excellence.
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Their words
I had always thought that all "Intelligent Investing" is "Value Investing". And that true value is always sustainable. In otherh words, "All Intelligent Finance is Sustainable Finance."
30 May 2025
From one piece Israel and Iran 2 beliefs · guyspier.com
From one piece The Trump Tariffs 2 beliefs · guyspier.com
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Their words
I pray for the day when Hamas, Hezbollah, and the Houthis - all proxies of the Ayatollahs-will become mere footnotes to history.
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Their words
This shared past between Persians and Jews is etched into my consciousness and that of many Israelis and Iranians. It will outlast the predations of the Ayatollahs and their Islamic Revolution of 1979.
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korrents.com
AI-enhanced access to information makes copying top investors' strategies smarter than ever before.Their words
There is more access to information than ever before. And that access is only enhanced by AI. Times could not be better for shameless cloners.
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Their words
There is everything to play for, and we can still all come out better off.
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korrents.com
Tariff announcements function as political theater and can be reversed as easily as they were imposed.Their words
The tariffs create political headlines that distract. But just as they can be easily announced, they can just as easily be changed or removed.
7 May 2025
Nothing matches.
Beliefs
Korrents What they believe 10 beliefs — each backed by an exact quote.
Each is a — compiled by korrents.com, not by them: the one-line wordings are korrents', the quotes are theirs.
Recent
Everyone is capable of great evil, and consciously recognizing that capacity in oneself is protective rather than harmful.
We are all - each and every one of us - capable of great evil, and we are far better of is we recognize it.
Thoughts on the Conviction of Donna Adelson Said 8 Sept 2025
People who believe themselves incapable of harm are more dangerous than those who recognize and fear their own capacity for it.
People who insist they're harmless aren't safe; they're naive. People who know exactly how dangerous they could become-and fear it-are the ones who deliberately yoke that force to good aims.
Thoughts on the Conviction of Donna Adelson Said 8 Sept 2025
A culture that emphasizes self-esteem over self-knowledge leaves people less equipped to resist doing monstrous things.
We live in a culture that preaches self‑esteem more than self‑knowledge. That leaves people morally flabby-performing virtue while outsourcing the actual discipline that keeps ordinary humans from doing monstrous things.
Thoughts on the Conviction of Donna Adelson Said 8 Sept 2025
Show 7 more
All genuinely intelligent investing is, by nature, sustainable investing.
I had always thought that all "Intelligent Investing" is "Value Investing". And that true value is always sustainable. In otherh words, "All Intelligent Finance is Sustainable Finance."
Lombard Odier, Oxford University and Sustainable Finance The Remarkable Transformation of a Discrete, Swiss Private Bank Said 2 Jun 2025
Switzerland's private banking industry is destined to become a global center of investing excellence, not just wealth management.
There is, however, one approach that tops all of them - which the Swiss banking industry has not yet achieved, but is destined to. And that is to become a centre of true investing excellence.
Lombard Odier, Oxford University and Sustainable Finance The Remarkable Transformation of a Discrete, Swiss Private Bank Said 2 Jun 2025
Tariff announcements function as political theater and can be reversed as easily as they were imposed.
The tariffs create political headlines that distract. But just as they can be easily announced, they can just as easily be changed or removed.
The Trump Tariffs Said 30 May 2025
A trade dispute escalated by aggressive tariffs can still end in a negotiated outcome that leaves all sides better off.
There is everything to play for, and we can still all come out better off.
The Trump Tariffs Said 30 May 2025
AI-enhanced access to information makes copying top investors' strategies smarter than ever before.
There is more access to information than ever before. And that access is only enhanced by AI. Times could not be better for shameless cloners.
Long Live the Shameless Cloners Said 30 May 2025
The Persian-Jewish cultural connection will outlast Iran's Islamic Republic regime.
This shared past between Persians and Jews is etched into my consciousness and that of many Israelis and Iranians. It will outlast the predations of the Ayatollahs and their Islamic Revolution of 1979.
Israel and Iran Said 30 May 2025
Hamas, Hezbollah, and the Houthis function as proxies of Iran's Ayatollah regime.
I pray for the day when Hamas, Hezbollah, and the Houthis - all proxies of the Ayatollahs-will become mere footnotes to history.
Israel and Iran Said 30 May 2025
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Recommends rcmnd
rcmnd What they recommend 23 things — each backed by an exact quote.
Compiled by rcmnd.app, not by them: the quotes are theirs, and each links to the post it was copied from.
Recent
Uses Moleskine notebooks
Roam Research is a regular companion. I also use Evernote, keep many Moleskine notebooks for fleeting notes, and have started using Zotero and Glasp.
Uses Glasp
Roam Research is a regular companion. I also use Evernote, keep many Moleskine notebooks for fleeting notes, and have started using Zotero and Glasp.
Uses Zotero
Roam Research is a regular companion. I also use Evernote, keep many Moleskine notebooks for fleeting notes, and have started using Zotero and Glasp.
Show 20 more
Uses Evernote
Roam Research is a regular companion. I also use Evernote, keep many Moleskine notebooks for fleeting notes, and have started using Zotero and Glasp.
Uses Roam Research
Roam Research is a regular companion. I also use Evernote, keep many Moleskine notebooks for fleeting notes, and have started using Zotero and Glasp.
Liked The Symbolic Quest
During my seven-year stint in Jungian therapy, I found Edward Whitmont’s The Symbolic Quest: Basic Concepts of Analytical Psychology a very useful handbook.
Liked Awaken the Giant Within
Awaken the Giant Within: How to Take Immediate Control of Your Mental, Emotional, Physical, and Financial Destiny! provides as good an introduction as any to his ideas, as do his various recordings.
Loved Twelve Steps and Twelve Traditions
Alcoholics Anonymous, which I have not attended, produces a wonderful book entitled Twelve Steps and Twelve Traditions.
Loved Forum: The Secret Advantage of Successful Leaders
The best guide to mastermind groups is Mo Fathelbab’s Forum: The Secret Advantage of Successful Leaders.
What others say about Forum: The Secret Advantage of Successful Leaders →
Loved Poor Charlie's Almanack
Another marvelous glimpse inside the mind of a master is Poor Charlie’s Almanack: The Wit and Wisdom of Charles T Munger, which includes his eye-opening analysis of the causes of human misjudgment.
Liked Berkshire Hathaway Letters to Shareholders
There is also a deep well of wisdom from Buffett in Berkshire Hathaway Letters to Shareholders, 1965-2013.
What others say about Berkshire Hathaway Letters to Shareholders →
Recommends Tap Dancing to Work
It’s well worth reading Tap Dancing to Work: Warren Buffett on Practically Everything„ 1966-2013 by his friend Carol Loomis, a renowned writer for Fortune.
Liked The Snowball
Alice Schroeder’s The Snowball: Warren Buffett and the Business of Life also makes made a valuable, though controversial, contribution to our understanding of him.
Loved Buffett: The Making of an American Capitalist
Roger Lowenstein’s biography Buffett: The Making of an American Capitalist was the first book that I consciously used to help me “model” Warren Buffett. It’s still my favorite biography of Buffett.
What others say about Buffett: The Making of an American Capitalist →
Liked The Alchemy of Finance
Before I discovered value investing, I was captivated by two other investment classics: Edwin Lelevre’s Reminiscences of a Stock Operator and The Alchemy of Finance by George Soros.
Liked Reminiscences of a Stock Operator
Before I discovered value investing, I was captivated by two other investment classics: Edwin Lelevre’s Reminiscences of a Stock Operator and The Alchemy of Finance by George Soros.
Liked The Great Minds of Investing
The Great Minds of Investing by William Green and Michael O’Brien offers a rare depth of insight into the lives and minds of many of the best investors of our time.
Recommends The Dhandho Investor
Five other books that deserve to be read and reread many times are Seth Klarman’s Margin of Safety: Risk-Averse Value Investing Strategies for the Thoughtful Investor; Joel Greenblatt’s You Can be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits; The Aggressive Conservative Investor by Martin J. Whitman, Martin Shubik, and Gene Isenberg; John Mihaljevic’s The Manual of Ideas: The Proven Framework for Finding the Best Value Investments; and Mohnish Pabrai’s The Dhandho Investor: The Low-Risk Value Method to High Returns.
Recommends The Manual of Ideas
Five other books that deserve to be read and reread many times are Seth Klarman’s Margin of Safety: Risk-Averse Value Investing Strategies for the Thoughtful Investor; Joel Greenblatt’s You Can be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits; The Aggressive Conservative Investor by Martin J. Whitman, Martin Shubik, and Gene Isenberg; John Mihaljevic’s The Manual of Ideas: The Proven Framework for Finding the Best Value Investments; and Mohnish Pabrai’s The Dhandho Investor: The Low-Risk Value Method to High Returns.
Recommends The Aggressive Conservative Investor
Five other books that deserve to be read and reread many times are Seth Klarman’s Margin of Safety: Risk-Averse Value Investing Strategies for the Thoughtful Investor; Joel Greenblatt’s You Can be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits; The Aggressive Conservative Investor by Martin J. Whitman, Martin Shubik, and Gene Isenberg; John Mihaljevic’s The Manual of Ideas: The Proven Framework for Finding the Best Value Investments; and Mohnish Pabrai’s The Dhandho Investor: The Low-Risk Value Method to High Returns.
What others say about The Aggressive Conservative Investor →
Recommends You Can Be a Stock Market Genius
Five other books that deserve to be read and reread many times are Seth Klarman’s Margin of Safety: Risk-Averse Value Investing Strategies for the Thoughtful Investor; Joel Greenblatt’s You Can be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits; The Aggressive Conservative Investor by Martin J. Whitman, Martin Shubik, and Gene Isenberg; John Mihaljevic’s The Manual of Ideas: The Proven Framework for Finding the Best Value Investments; and Mohnish Pabrai’s The Dhandho Investor: The Low-Risk Value Method to High Returns.
Recommends Margin of Safety
Five other books that deserve to be read and reread many times are Seth Klarman’s Margin of Safety: Risk-Averse Value Investing Strategies for the Thoughtful Investor; Joel Greenblatt’s You Can be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits; The Aggressive Conservative Investor by Martin J. Whitman, Martin Shubik, and Gene Isenberg; John Mihaljevic’s The Manual of Ideas: The Proven Framework for Finding the Best Value Investments; and Mohnish Pabrai’s The Dhandho Investor: The Low-Risk Value Method to High Returns.
Loved The Intelligent Investor
The Intelligent Investor: The Definitive Book on Value Investing by Benjamin Graham is where it all started for me.
Where they publish
Site guyspier.com Spier's personal site: his thoughts, book list, /now page and links to everything else.
Recent
- Thoughts on the Conviction of Donna Adelson 8 Sept 2025 Donna Adelson was recently found guilty of murdering her son‑in‑law Dan Markel on all 3 counts. Murder, conspiracy to murder and solicitation for murder. And it took just 3 hours for the jury to find her guilty. It’s be…
- Amandla! Or how Nelson Mandela’s letters from Robben Island sparked a revolution. 9 Jun 2025
- Lombard Odier, Oxford University and Sustainable Finance The Remarkable Transformation of a Discrete, Swiss Private Bank 2 Jun 2025 For generations, clients visiting Lombard Odier would enter the back door out of fear of being recognized by the French tax collectors. These days, the bank touts its credentials proudly, even brashly. Their recent endo…
Show 5 more
- The Trump Tariffs 30 May 2025 Trump’s tariff policy seems to be one of the most stupid, asinine, dumb-headed, counterproductive, head-up-the-ass things that he has done so far. Here is why I am less concerned than you might be: The tariffs create po…
- Long Live the Shameless Cloners 30 May 2025 In the early 2000’s Mohnish Pabrai became the first person the investment world to talk openly about an uncomfortable truth. Many investment managers – who claimed to be original thinkers were actually just copying othe…
- Israel and Iran 30 May 2025 The relationship between Israel and Iran is rooted in our collective memories. It stretches back more than 2,500 years, to when Cyrus of Persia freed the Jews from our Babylonian exile. It was the same Cyrus the Great w…
- Eric Schaaning and his team won the Swiss Risk Award 2024 7 May 2025
- An improved sovereign rating would save the India 5 billion USD annually. 7 May 2025 A local sovereign ratings agency in India is crucial. CareEdge Sovereign Ratings will be instrumental in helping India achieve it’s economic destiny. pic.twitter.com/wKZoZ5mrat — Guy Spier 🎗️🇮🇱 🇺🇦 (@GSpier) March 1…
Link verified 4 Sept 2026. Recent items update automatically from the channel.
x.com @GSpier Spier's X account.
Recent
- Here she is again. @louiselzeu you are awesome 8 Oct 2026
- I support her - with the round glasses. 8 Oct 2026
- Congratulations Michael Ciesielski and team! 7 Oct 2026
Show 17 more
- Wow. Worth the full read. I support Kemi Badenoch as the next PM. 4 Oct 2026
- Thank you Smit Machchhar 2 Oct 2026
- They were not journalists. @piersmorgan and others where is your apology 2 Oct 2026
- How Switzerland Ended Decades of Highway Noise https://t.co/Ra00Wa6P6l via @YouTube 29 Sept 2026
- Fantastic interview. Thank you @jonsac 27 Sept 2026
- Anti-Semitism is the organization of politics against the Jews - Ruth Wisse: Otherwise known as: Why confront your own failures when you can blame the Jews—or the world’s only Jewish state? If I were a Birmingham resident I would be furious 16 Sept 2026
- Happy New Year everybody 11 Sept 2026
- The Aesthetic City I love this channel. How Frankfurt transformed itself What about your city? 7 Sept 2026 youtu.be
- The Iran that I know and love 4 Sept 2026
- Amazing speech by @EinatWilf 3 Sept 2026
- Living till we die by Mor Eini 31 Aug 2026
- I'm in a clinical trial for a brain cancer vaccine. Last month I sat down with the two men who invented it. Michael Ciesielski and Robert Fenstermaker. The idea is a vaccine called SurVaxM. It teaches the immune system to recognise survivin, a protein that helps cancer cells refuse to die. Glioblastoma is full of it. Fifteen years to get it from a Buffalo lab into patients. 28 Aug 2026
- Good job @BillWhiteUSA for standing up for free speech. 27 Aug 2026
- Douglas Murray: The death penalty is barbaric. But it fits the crime. Those who took part in the October 7th massacres should be executed in accordance with Israeli law. I wholeheartedly agree. 26 Aug 2026
- A government confident it's policy should be able to answer basic questions: is Norway opposing settlements—or making Jewish presence itself the test? The Deputy Foreign Minister’s refusal to answer says it all. Thank you @HausdorffMedia, @akravik79 you are an amateur 25 Aug 2026
- Two great individuals. @ABarliya @HilzFuld 17 Aug 2026
- What it is like when a mother looses a daugher. 16 Aug 2026 theatlantic.com
Link verified 4 Sept 2026. Recent items update automatically from the channel.
LinkedIn linkedin.com/in/gspier Spier says on his site that LinkedIn is one of the two best ways to message him.
Link verified 4 Sept 2026.
YouTube @GSpier12 Video versions of his podcast conversations.
Recent
Link verified 4 Sept 2026. Recent items update automatically from the channel.
Podcast The Education of a Value Investor Spier describes it as learning in public rather than a produced show.
Link verified 4 Sept 2026.
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