Value Investing Observatory
"Price is what you pay. Value is what you get."
Issue #14 · Weekly Stock Analysis · July 01, 2026
Welcome to this week's edition of The Buffett Lens, where we apply Warren Buffett's time-tested investment principles to identify stocks with durable competitive advantages, strong management, and sensible valuations.
Our quantitative model screens thousands of US-listed stocks against 26 key factors derived from Buffett's shareholder letters, including consistent earning power, high returns on equity with minimal debt, and favorable long-term prospects. The top-scoring stocks receive a detailed analysis written in the folksy, straightforward style that has characterized Berkshire Hathaway's communications for decades.
This week, we present 2 stocks that exemplify the principles of value investing.
Looking at T-Mobile is a bit like watching a fellow who starts with a modest roadside stand and turns it into the busiest stop on the highway. Folks need to connect with family, check the weather, or handle business on the go, and this company has built a setup where more users make the whole thing stronger and stickier over time.
This outfit has a wide moat, much like a castle protected from invaders. The high moat score comes from network effects that get tougher for newcomers to crack as the customer base grows. Revenues have climbed steadily across recent quarters, reaching an LTM total of 90.5 billion dollars, with net income at 10.5 billion. Latest return on equity sits at 18.9 percent, better than the five-year average of 15.4 percent. That shows real earning power on the equity capital employed, without the accounting tricks I have always disliked. Insider ownership at 55 percent means the people running the place have plenty of skin in the game, much like the talented managers I have praised in the past who create extra value once they have the right environment.
A good managerial record is far more a function of what business boat you get into than how effectively you row, and wireless services can be a decent vessel if the network holds up. The high insider stake suggests they are rowing with owners in mind rather than chasing short-term headlines.
That said, I must admit the shortcomings humbly. Debt to equity stands at 2.17 times, which is more leverage than I prefer. As I have noted before, a business earning a solid rate on capital can produce disappointing results for owners when inflation or rough patches arrive and that borrowing starts to weigh heavy. The telecom field remains competitive, with rivals who are no strangers to price wars or network upgrades. Past rates of growth cannot be matched forever, and market swings will influence what gets reported.
At 20 times earnings and 3.8 times book value, this is no obvious bargain. What counts is intrinsic value, not book value, and I would want to see whether the earnings hold up without leaning too much on borrowed money. If management keeps delivering consistent results in this business boat and avoids gimmickry, the long-term picture could still compound sensibly for patient owners. I have always favored waiting for a fair price on a good business rather than overpaying in hopes of catching a hot streak.
The ticker for T-Mobile US, Inc. on eToro is $TMUS.
Trade T-Mobile US, Inc. — The ticker for T-Mobile US, Inc. on eToro is $TMUS
eToro is a multi-asset investment platform. Capital at risk.
| Metric | Value | Buffett Threshold | Status |
|---|---|---|---|
| ROE (Latest) | 18.9% | >15% | PASS |
| Debt/Equity | 2.17x | <0.5x | FAIL |
| Gross Margin | 61.8% | >40% | PASS |
| Market Cap | $187.3B | >$10B | PASS |
| LTM Revenue (Last 4Q) | $90.5B | Positive, with YoY growth preferred | PASS |
| LTM Net Income (Last 4Q) | $10.5B | Positive, with YoY growth preferred | PASS |
When I think about Airbnb, it strikes me as something like a big, old-fashioned community market that never closes. Instead of owning all the stalls, this outfit just sets up the tables and lets hosts and guests find each other. The real magic is that the platform keeps getting better as more people use it, turning spare rooms and empty homes into a steady source of income for owners and affordable places to stay for travelers.
This business shows the kind of earning power I like to see. Over the last four quarters it brought in about $12.6 billion in revenue and turned $2.5 billion into net income. The return on equity hit 33 percent in the most recent period, well above the five-year average of 21.6 percent. That tells me the capital owners have put in is working hard without the company leaning on heavy borrowing. Debt sits at just 0.33 times equity, so there is none of the financial juggling that can turn a good operation sour when times get tight. The moat here is wide, built on brand recognition and the simple fact that both sides of the market keep coming back. Once people trust the system for finding a place or listing one, switching to something new feels like work. Good managers have clearly added to the value over time by keeping the platform useful and safe, which fits what matters more than any single clever idea.
Still, I have to be honest about the shortcomings. This is a consumer cyclical business, so when folks tighten their belts or travel gets disrupted, the marketplace can feel the pinch quickly. Revenue and profits dropped to near zero in earlier quarters before recovering, a reminder that the tide does not always rise. Insider ownership is only about 1 percent, which is modest compared with some outfits where the leaders have real skin in the game. The price-to-earnings multiple around 23 times and price-to-book near 7.7 times are not bargain levels either. I have seen plenty of companies trade at premiums only to watch growth slow and the multiple shrink.
Over the long run, the question is whether the platform can keep delivering solid returns on the capital it employs as the world normalizes. If the core economics stay strong and management avoids chasing every shiny distraction, the business could compound value for patient owners. My experience is that the best results come from buying into understandable operations at sensible prices and then giving them time to work. Market swings will come and go, but the test is how much cash the enterprise can generate over a decade or more.
For those looking to act on this, the ticker for Airbnb, Inc. on eToro is $ABNB.
Trade Airbnb, Inc. — The ticker for Airbnb, Inc. on eToro is $ABNB
eToro is a multi-asset investment platform. Capital at risk.
| Metric | Value | Buffett Threshold | Status |
|---|---|---|---|
| ROE (Latest) | 33.0% | >15% | PASS |
| Debt/Equity | 0.33x | <0.5x | PASS |
| Gross Margin | 78.3% | >40% | PASS |
| Market Cap | $87.4B | >$10B | PASS |
| LTM Revenue (Last 4Q) | $12.6B | Positive, with YoY growth preferred | PASS |
| LTM Net Income (Last 4Q) | $2.5B | Positive, with YoY growth preferred | PASS |
The following stocks from previous issues have fallen below our Buffett thresholds. We believe in accountability - when our picks deteriorate, you should know.
Recommended in Issue #3 (2026-03-18) with score 74.1
Current score: 70.0 (-4.1 points)
ROE: 7.1% | Debt/Equity: 0.68x | Gross Margin: 52.7%
Consider reviewing your position.
Recommended in Issue #4 (2026-03-25) with score 80.1
Current score: 78.0 (-2.1 points)
ROE: 25.1% | Debt/Equity: 0.98x | Gross Margin: 38.3%
Consider reviewing your position.
Recommended in Issue #3 (2026-03-18) with score 77.6
Current score: 78.0 (+0.4 points)
ROE: 25.1% | Debt/Equity: 0.98x | Gross Margin: 38.3%
Consider reviewing your position.
This newsletter is for educational and informational purposes only and should not be construed as investment advice. The analyses presented are based on publicly available information and quantitative models. Past performance does not guarantee future results. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
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