KEY TAKEAWAYS
- Cascade Investment, L.L.C., the investment vehicle for Bill Gates, filed at least six separate Form 4s in August covering purchases on 15 or more trading days between August 10 and August 31, 2026.
- Shares were purchased at prices ranging from roughly $214 to $224, averaging around $220. Total August accumulation: approximately 1.8 to 2 million shares, representing an estimated spend of $400M or more in a single month.
- Cascade's total RSG position after the August buying spree is approximately 114.5 million shares. At roughly $222 per share, that position is worth approximately $25 billion. Republic Services is Gates's largest publicly known equity holding.
When Cascade Investment filed its first August Form 4 for Republic Services shares, it was easy to treat it as routine. Cascade buys RSG regularly. It's been happening for years. But the pace of August buying is worth documenting separately, because this wasn't routine accumulation. It was sustained daily purchasing at a scale and consistency that stands out even by Cascade's standards.
The August buying pattern
August 10: 261,664 shares across three price points, approximately $56.2 million. August 11: 236,000 shares, approximately $50.9 million. August 13: 362,960 shares, approximately $78.3 million. August 17 and 18: 356,050 shares and then 200,125 more, the August 18 batch alone totaling approximately $76.6 million across three transactions in a single session. August 19: 178,844 shares, approximately $39.8 million. August 20 and 21: 208,925 and 191,361 shares respectively, roughly $88 million combined. August 24 and 25: 301,639 and 269,477 shares, approximately $127 million total. August 27: 560,100 shares, approximately $123.5 million. August 28: 251,400 shares. August 31: 300,000 shares.
By the end of August, Cascade's total RSG position had grown to approximately 114.5 million shares. That's over 11% of Republic Services' outstanding stock. Across the full year to date, Cascade has bought more than 1.8 million shares with zero sales. The buying has been continuous, consistent, and directional. Not one day of selling. Not one day of standing still for more than a few sessions at a stretch.
What Republic Services actually does
Republic Services is the second-largest waste management company in the United States. It collects residential and commercial garbage, operates landfills, runs recycling programs, and provides environmental services across 41 states and Puerto Rico. The business is about as recession-resistant as publicly traded businesses get. Garbage gets collected whether the economy is expanding or contracting. Landfill tipping fees are largely contractually protected. Municipal contracts run for years. Pricing increases pass through without meaningful volume resistance because you can't really shop around for a different garbage collector in most jurisdictions.
The Q2 2026 earnings reflected the predictability of the model: revenue growth, expanding margins, free cash flow generation consistent with prior quarters. Republic Services has increased its dividend annually for over a decade. It's not a story of exciting growth. It's a story of compounding durability, which is exactly the kind of asset a $100 billion portfolio looks for when making a 25-year holding decision.
Why Gates has been buying so consistently
Cascade has never offered a public explanation for the RSG accumulation. Gates doesn't give investor interviews about specific position sizing decisions. But the investment logic is not hard to reconstruct from publicly available information.
Waste infrastructure is genuinely difficult to replicate. Republic Services operates landfills that took decades to permit and that regulators are not going to permit new versions of in high-population-density areas. The competitive position compounds passively as existing landfill capacity becomes more valuable relative to replacement cost over time. Environmental regulations tend to increase the compliance requirements that large, sophisticated operators like Republic Services can absorb more efficiently than smaller competitors, creating gradual market share consolidation toward the two largest players.
Gates has also been vocal about environmental infrastructure as a multi-decade investment theme through his climate-focused activities and the Gates Foundation's broader investment mandate. Waste management intersects directly with recycling economics, methane capture at landfills (which Republic Services is expanding), and the circular economy thesis. These aren't just financial reasons to own the stock. They align with a worldview about where capital should be deployed over 20 to 30 year horizons.
The daily buying pattern itself is also worth reading as a signal. Cascade isn't buying RSG because of a short-term catalyst or because it expects Q3 results to surprise. It's buying because the position sizing isn't yet where it wants to be, or because cash flows from other parts of the Gates portfolio are being systematically deployed into what the team views as a permanent holding. At a 25-billion-dollar position, that systematic deployment at $220 per share is the institutional investor version of dollar-cost averaging into a conviction.
The comparison that matters
The standard insider buying framework applies cleanly here in a way it doesn't always. This isn't a micro-cap CEO buying ahead of an undisclosed event. This is a 10% owner with a multi-decade investment horizon, buying shares across 15 separate trading days at prices between $214 and $224, with zero selling activity across the full year. The signal is about long-term conviction in a business, not short-term information asymmetry. That's a different kind of signal, and arguably a more reliable one, because it reflects a portfolio construction decision rather than a bet on a near-term catalyst.
The one thing beginners should take away
When the world's second-richest person spends over $400 million buying shares of one company across an entire month, the question worth asking isn't "should I buy RSG today?" The question is "what does he see in a waste management company that makes it worth a 25-billion-dollar commitment?" The answer is durable competitive moats, pricing power, essential services, and infrastructure that compounds quietly for decades. RSG is not a growth story. It's a permanence story. Those are different investments with different analytical frameworks, and the Gates buying is a reminder that both kinds of stories can be worth owning.