Hi, I am Trung👋

Thank you for stopping by.

I am the author of Sleep Well Investments.

You may have come across my tweets, 100+ investing articles on SeekingAlpha, or the podcast interview that has reached hundreds of thousands of readers.

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What is Sleep Well Investments?

You deserve a portfolio that allows you to sleep-well!

Identifying a great business is complex. Monitoring and owning without checking the stock market regularly is even more difficult.

I am here to provide in-depth analyses of exceptional businesses that would do well over multiple market cycles and possess the ingredients to keep winning. I also provide thesis-tracking updates to help you monitor their performance. When the right price comes, I will buy them for the Sleep Well Portfolio, which I am building for my two daughters to redeem in 2037. I disclose detailed reasoning of all BUY and SELL (ideally never) transactions (1st, 2nd, 3rd, 4th). Access all content here.

Three Types of Writeup:

First, the deep dives unpack market leaders’ exceptional strategies, tactics, and secrets. At the end of the deep dive, I test them on my ‘sleep well investments’ checklist and present a scorecard.

A high-scoring business at the right price will earn a position in my Sleep Well Portfolio. You can expect a breakdown of (i) how the business has built its success, (ii) how it will overcome competition and future adversities, and (iii) valuation work to ensure we buy at a reasonable price.

Below are the scores of the first few picks. Notice that business quality, with 17/20 total points, is more important than valuation, with 3/20 total points. The margin of safety for me comes mostly from the business's resiliency rather than its cheapness.

Sleep well 2024
Sleep well 2022-23

As they progress, they must perform and adapt to stay on as sleep-well investments, which comes to the second type of writeup - Thesis Tracking updates.

I provide a quarterly thesis tracker report to track picks’ performance. I boil the updates down to one KPI - market share movements against key rivals. As shown in the following table, green means gaining market share, red means losing, and yellow means stable - keeping things simple and effective because gaining or losing market share speaks volumes about the quality of the moats and barriers to entry. It also encourages long-term investors to think long-term!

Sleep Well Portfolio spreadsheet - annual premium members only

Behind the KPI is a comparative report of (i) revenue growth, (ii) major client wins/losses, (iii) industry rankings, and sometimes (iv) product reviews, if relevant. You will know the market share movements and the why and how they gain/lose.

I encourage you to check out the thesis tracking updates of MIPS, CRWD, and FND to appreciate the breadth and depth of my research.

Sleep Well Portfolio *Ownerhip Alert*

For transparency and disclosure, I also share my position in the businesses I write about. This is the third type of write-up where I show you my detailed thought process behind every BUY and SELL.

Expect periodic buys and very infrequent sales - ideally never. I aim to own these businesses as long as they perform in my Thesis Tracker, which I update quarterly or when data is available.

Please click this LINK to see the Sleep Well Portfolio in full.

What is the Sleep Well Portfolio?

I use my daughter’s junior portfolio to show you how I construct a long-term portfolio from scratch. The redemption year is 2037, 14 years from today when she turns 18.

✔ The portfolio will eventually consist of 20 names
✔ The portfolio redemption year is 2037. We buy to own long-term
✔ No market timing. We buy at a price that offers a healthy margin of safety
✔ The portfolio only invests in deep-dived stocks that are monitored closely
✔ They are market leaders who have:

  • Stable / strengthening market position

  • Enduring competitive advantages

  • Management with aligned interests and a strong capital allocation track record

  • Anti-fragility attributes (healthy balance sheet, adaptable business model, endured competitors and past crises)

  • Plenty of reinvestment opportunities

  • Trading at a fair valuation

Investing is a life-long journey, not a sprint. That’s why the portfolio redemption year is 2037. I intend to buy to own long-term—no short-term trades. A few extra percentage points of return aren’t as important as sleeping well, knowing why I own a business, and trusting my investment process.

For this reason, access to the portfolio is only available for annual paid subs who are in it for the long run. I apologize to monthly subscribers; I don’t want to mislead or tag you along for the marathon when you are looking for a sprint. You still have full access to my deep dives and thesis-tracking updates.

Important note: It doesn’t matter if you manage a $50K or a $50M portfolio; if you can’t manage the small amount responsibly, then managing $50M will magnify your mistakes. Hence, I do not provide ownership details in absolute $ value.

The purpose of showing how I manage my daughter’s and my family's portfolio is to encourage long-term ownership, showing I eat my own cooking and, for your reference, that it is possible to have a lasting investment process over multiple cycles. Please don’t copy it blindly; your saving is finite; treat it responsibly. We also likely have very different financial goals and circumstances.

Finally, I will only reveal new Sleep Well Portfolio positions after publishing my deep dive. I believe an investor should only consider an investment after thoroughly researching it.

Directory to FREE and Premium Research

I cover a range of sectors that are least likely to lose relevance, including semiconductors, bike and helmet components, RVs, surgical equipment, cybersecurity software platforms, home building materials, and more. You can find all the topics that we cover here.

About Me

I was born in Vietnam and moved to the U.K. in 2001 when I was 15.

I started my professional experience at PwC and KPMG and my research experience while doing my Ph.D. in Innovation Management. Still, my side hustles and competitive tennis skills built who I am today. I hosted a Value Investing group in London (pre-covid) and managed external capital for family and friends between 2015 and 2020. Since 2022, I have refocused on what I enjoy most - sharing my deep research on Sleep Well Investments; it’s my third baby after my two daughters.

I strive for simplicity and structure in my investment process because building wealth is building time for what matters most in your life.

Feel free to contact me at trung.nguyen@sleepwellinvestments.com, LinkedIn, or twitter/X@ DTF_Capital

Don’t be a stranger!

My investment philosophy

I am patient and optimistic, with a keen eye for details—and I love building a good process.

I invest in a business to own it. I find it hard to sell. So, I will stop adding to positions that turn against me and only sell if I need the money for something else.

I hold about 20 stocks at a time. I start with small positions and let the portfolio concentrate over time without rebalancing. I invest when the price is right and add fresh savings to the stock market across large caps and individual stocks.

My investment moto is:

  • Focus on refining the investment process.

  • Discipline execution.

Hopefully, these will lead me to find exceptional businesses and enjoy an acceptable return.


Interested in collaborating? Sleep Well Investments is read by finance, tech, and business decision-makers, including the C-suites of public and private companies, funds, family offices, and CIOs worldwide.

We'd love to hear from you if you want to learn more. Send us a note at trung.nguyen@sleepwellinvestments.com, and we’ll respond!

Affiliate partnership

Use the ‘SWI20’ code at checkout for discounts - Quartr is a searchable database of slides, interviews, and earnings calls. It helps me to gather relevant and valuable insights efficiently.


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Sleep Well Portfolio of anti-fragile and time-tested businesses


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