Sangyoon

Hi, I'm Daniel. Some call me Sangyoon. I was born in the U.S., but spent most of my life in South Korea 🇰🇷 and Singapore 🇸🇬.

On my Substack ✍🏼, I write about fundamental investing. Topics include philosophies and observations, as well as my positions in crypto venture, technology stocks, or distressed assets (largely small cap net-nets), all through the lens of concentrated value investing. Occasionally interspersed are tidbits of my personal life.

Working in venture capital, I've been fortunate to observe innovative businesses from the earliest stages. As a bootstrapped founder, I've achieved a 7-figure outcome and raised venture funding for another.

When I'm not going down rabbit-holes and writing, you can find me playing tennis 🎾 or golf ⛳ with friends. When I'm alone, I love playing Chopin or movie soundtracks on the piano 🎹, though I need to start learning some new pieces again. I enjoy trying new types of coffee ☕ (I was a Starbucks barista in my teens), and aim to be half-vegetarian, since I'm not brave enough to go full-on just yet.

That's a little bit about me. But if you'd like to learn more about how I got here in the first place, come join me below.

Ever since taking a summer camp course in middle school called "Who is Dow Jones?", I fell in love with the art of investing. I particularly enjoy that it rewards independent, contrarian thinking and an even temperament. I chose to attend NYU Stern for their undergraduate finance program, but deferred by a year to take a value investing course and pore through books like "The Intelligent Investor" at the local library.

During college, I took advantage of being in NYC to intern at three different hedge funds, grateful that such institutions would even take a student who knew nothing like me. After graduating, I started as an investment banking analyst. In some ways, I was living the life - early 20s in the heart of New York, exploring hobbies, and hosting poker games in our apartment with my two housemates.

We also found ourselves chained to our desks on many weekends. While banking was touted to be a good stepping stone to greater things, I didn't see how it was making me a better investor, particularly a long-term investor hoping to build real businesses. It was in the midst of this environment, wondering what more there was to life, that I discovered cryptocurrencies.


Long story short, I started arbitraging inefficient crypto markets. This was 2017 when the market was rife with inefficiencies.

At the time, crypto was booming. Booming so much that there was a 30-50% spread between Korean and American crypto prices. The opportunity was so blatant that everybody was talking about it, yet nobody thought to actually trade it. Why? I don't know. I asked a lot of people, and they didn't think it was possible because of this regulation or that blocker.

With a little investigation, I sorted out the legal and trade mechanics and was making $15,000 every single day, with just a few clicks. This was possible because I identified the opportunities, stayed abreast of developments, moved fast, managed risk, and pulled all-nighters to do the grunt work from talking to lawyers to setting up trades — all while working a 70-80 hour / week job…

After this interesting incident, a few friends and I decided to arbitrage the price differentials among exchanges... The trading was run from our tiny NYC bedroom, with rotating sleeping schedules to keep an eye on the markets 24/7. At one point, our portfolios were worth a couple million dollars. It was unbelievable for 23-year-olds whose bank accounts had never seen anything remotely like it. Needless to say, it was an exciting time. - Medium: How I Made $15,000 / Day as a Fresh College Grad

I felt empowered - that I too could pave a path in this world following my own beliefs, and that it was ok to be different.

But I quickly felt empty.

The best in the space were engaged in a movement, not just profiting off market inefficiencies. I packed up, said goodbye to friends in New York City, my home of five years, and left my old life behind.

I would move to the Bay Area in 2018, at age 24, to write a book and make a Wikipedia for crypto. Hundreds of projects with technical jargon were popping up every day, where even someone full-time like myself would get lost in it all. I wanted to help people cut through the noise and understand why this technology mattered. To me, crypto is an equalizing force - an open industry where people are judged on merit, creativity and contribution rather than status, and a technology that enables people to more equitably share in the wealth that innovation creates. Imagine every time you rode an Uber, you earned equity in the company. That's a small example of what crypto rails make possible. On Ethereum, you can access loans from a decentralized protocol with just an internet connection, not gated by income, ethnicity, or social status. With DePIN systems like Helium, I am both a consumer and owner in the mobile network I use.


By good fortune, mutual connections put me in touch with venture capitalist Tim Draper. I had respected him for being one of the first prominent figures to lend credibility to the space as far back as 2014, and wanted to learn everything I could from him.

Under him, I invested early in projects like Arkham, which increased the transparency of murky on-chain transactions, and the investment would grow 100x within a couple years of investing. Or Polymarket, which I saw go from an experimental project to becoming the leading arbiter of truth, especially in the 2024 US election. I supported them because they were both founded by college dropouts that reminded me of my wiki-building days. We all strived to build tools that educated and gave greater opportunity to anyone with an internet connection.

Others, like MakerDAO, would enable more people to access loans or lending opportunities through its decentralized protocol. And of course, there were more established companies like Coinbase and Ledger, whom I had the privilege to watch as an investor, the former which would IPO at a $100 billion valuation.

Paradoxically over time, I felt simultaneously more involved and more on the sidelines. I missed being a player on the field.


To wrap up my years of self-taught programming, I did a coding bootcamp (a very intense three months of 14-hour days, 6 days a week of coding), after which some old friends convinced me to co-found a startup with them. One had sold his last startup to Bitgo, and was itching to do something new. I'd happily raise the funding, but on one condition - that I would work as a full-time software engineer.

Luckily, I round up $3.7M in a month right before the market crashed in 2022, from entrepreneurs I respected like the founders of Youtube, Twitch, Y-Combinator OrangeDAO (where I now serve as a venture partner) and many others.

I thought back to my experience losing bitcoin to institutions that crashed in 2022. It was a lesson in how the first cryptocurrency, Bitcoin, was intended to be stored: self-custodied, seizure-proof and censorship-resistant. I also saw that the Safe multisig, an open-source protocol for self-securing crypto assets, was growing rapidly. That was how our multi-signature crypto wallet was born.

We built a prototype and won 1st place in a one-month hackathon hosted by Safe, Coinbase and Stripe. Unlike existing multi-sig wallets, you could connect to any dapp through the browser. Some companies were interested in acquiring the technology and having us build in-house.

Ultimately, my co-founder sought to pivot the wallet into a consumer trading application. I was more inspired by decentralized and institutional use cases of crypto, and it's hard for me to be all-in on an idea I'm not passionate about. I left to focus on my next aspirations, and am currently at Columbia Business School focused on value investing, my first career interest and passion. Nonetheless, I cherish my experience here and continue rooting for Nest Wallet's success. They've been growing users fast, and have my fingers crossed for a good outcome. Code section for more on Nest.


I've learned so much from founding a company. Going through the ups and downs has made me a much more empathetic partner to founders I advise or work with today. I know what it's like to grind day in and out managing codebase, partnerships, investors, user interviews and finding product market fit. I would do it all over again for the right vision.

The curtains are closing on my 20s, and I'm looking forward to what my 30s will bring. I hope to have more adventurous stories for you then. Until next time.

- Daniel Sangyoon Kim

Good old days learning from Tim. He wore a Bitcoin tie every day - a true believer.