Market sell-offs can make everything look uncertain. Stocks fall, headlines turn negative, and it becomes tempting to step away entirely. But while the market is focused on what is going wrong, some of the world's most experienced investors are quietly making moves of their own.

The latest portfolio filings reveal a fascinating pattern: capital isn't disappearing—it is becoming more selective. Alphabet, Amazon, AI infrastructure, energy, Uber, and even SpaceX continue to attract attention, while other positions are being trimmed or abandoned.

For the busy investor, the real opportunity isn't copying these trades. It's understanding why sophisticated investors are still willing to put billions behind certain businesses and long-term themes.

What are Buffett, Ackman, Tepper, Thiel, and other superinvestors seeing that the broader market may be missing? This deep dive uncovers the stocks and themes drawing serious conviction—from Alphabet's AI opportunity and Amazon's multiple growth engines to the hidden energy trade powering data centers, Uber's rising appeal, and SpaceX's growing influence on private-market portfolios.

Two things become clear: smart money isn't necessarily chasing the loudest stocks—and the biggest opportunity may be hiding behind the next wave of AI infrastructure.

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There is no complicated strategy required — just the discipline to keep adding the same amount each month. Markets can change and past results never guarantee the future, especially with a stock that has risen this sharply. Still, TRVI’s five-year record gives a clear sense of what consistent investing paired with strong growth can achieve. For anyone willing to stay patient and accept some volatility, this kind of plan has the potential to turn ordinary monthly savings into something much larger.

When markets become volatile, it is tempting to do exactly what everyone else is doing: check the headlines, watch the biggest stocks fall, and wonder whether it is time to step aside. But there is another way to look at periods of uncertainty. Instead of asking what the market is afraid of today, look at what experienced investors are still willing to own.

The latest quarterly filings provide an interesting glimpse into that thinking. Warren Buffett's Berkshire Hathaway, Bill Ackman's Pershing Square, David Tepper's Appaloosa Management, Daniel Loeb's Third Point, Seth Klarman's Baupost Group, Terry Smith's Fundsmith, Chris Hohn, Howard Marks, David Einhorn, Peter Thiel, and other well-known investors all revealed changes to their portfolios.

There is an important limitation: these filings describe positions from the previous quarter, not necessarily what these investors own today. Institutional managers can buy or sell after the reporting period ends, and the filings do not provide a complete picture of short positions, cash, bonds, or non-U.S.-listed investments. So the goal should not be to copy a trade blindly. The real value is seeing which businesses and themes continue to attract sophisticated capital.

Among all the activity, Alphabet $GOOGL ( ▲ 1.22% ) stands out.

Warren Buffett's Berkshire Hathaway increased its Alphabet position significantly, adding roughly $37.8 billion worth of shares during the quarter. That purchase alone was larger than the entire portfolios of many other funds discussed in the analysis.

Alphabet was not simply a Berkshire story, either. David Tepper's Appaloosa Management increased its Alphabet position, while Daniel Loeb's Third Point dramatically increased its exposure as well. Chris Hohn also added to Alphabet, and Li Lu's Himalaya Capital maintained Alphabet as its largest holding, representing nearly half of its concentrated portfolio.

That concentration tells you something worth paying attention to. Alphabet is no longer simply a search company. Its investment case now stretches across Google Search, YouTube, Google Cloud, advertising, AI models, data centers, and other technology platforms. The company's enormous existing user base also gives it an advantage that many newer AI businesses have to spend years trying to build.

That does not mean Alphabet cannot fall or become overvalued. It can. But when several sophisticated investors independently maintain or increase exposure to the same company, it is worth understanding why the business remains attractive, rather than simply focusing on its latest stock-price movement.

Amazon $AMZN ( ▼ 0.57% ) was another recurring name across the portfolios.

Amazon remained a major holding for Peter Thiel, David Tepper, Seth Klarman, and other prominent investors. Tepper increased his Amazon position by roughly 55%, while Klarman also added to the stock. Bill Ackman, meanwhile, reduced his Amazon position by approximately 25%, illustrating an important point: even when investors agree on a company's quality, they can disagree dramatically about valuation, position size, and timing.

Amazon's appeal is also much broader than its online retail business.

The company's AWS cloud division gives it exposure to the infrastructure required to support the growth of artificial intelligence and enterprise computing. Its advertising business provides another high-margin revenue stream, while its massive logistics network and consumer ecosystem continue to strengthen its competitive position.

For the busy investor who does not have time to follow dozens of companies every day, businesses with multiple independent growth drivers deserve special attention. Amazon does not have to win in only one area for the investment thesis to work. E-commerce, cloud computing, advertising, subscriptions, and AI infrastructure can all contribute to long-term growth.

The AI trade has not disappeared, but the portfolios suggest that the opportunity is becoming broader.

Nvidia $NVDA ( ▼ 0.98% ) remains one of the most important AI-related holdings, although interestingly, relatively few of the superinvestors discussed increased their Nvidia positions during the quarter. There were five reported buyers compared with 13 sellers in the group examined.

That is an important detail because it challenges the assumption that every sophisticated investor is simply piling more money into Nvidia.

Other AI and semiconductor names continued to appear, including Micron $MU ( ▼ 0.78% ), Taiwan Semiconductor $TSM ( ▲ 0.71% ), Broadcom $AVGO ( ▲ 1.21% ), ARM, CoreWeave $CRWV ( ▼ 2.13% ), and Cerebras. David Tepper, for example, maintained a large Micron position even after cutting it substantially, while his portfolio also added exposure to CoreWeave and Broadcom.

Brad Gerstner's portfolio showed particularly strong conviction in the AI ecosystem, with Nvidia as a major holding and Cerebras representing another substantial position. His portfolio also included TSM, CoreWeave, ARM, Amazon, Uber, Snowflake $SNOW ( ▲ 3.58% ), and Microsoft $MSFT ( ▲ 0.43% ).

The message is becoming increasingly interesting: AI investing is moving beyond the question of who makes the best chip. Investors are also considering who supplies the computing power, cloud infrastructure, networking, memory, energy, and software required to turn AI demand into an enormous physical ecosystem.

One of the most interesting portfolio constructions came from Peter Thiel.

His holdings included Amazon alongside significant positions in Vistra $VST ( ▼ 1.97% ), American Electric Power $AEP ( ▼ 3.79% ), and FirstEnergy $FE ( ▼ 2.59% ). That combination creates a straightforward investment thesis: if AI data centers continue consuming enormous quantities of electricity, the companies supplying and managing that power could benefit from the expansion.

This is an important way to think about major technological trends.

When smartphones became widespread, the opportunity was not limited to Apple or Samsung. Entire ecosystems developed around components, networks, software, and infrastructure. AI could follow a similar path.

The enormous computing requirements behind AI models mean that data centers need electricity, transmission infrastructure, cooling systems, semiconductor equipment, and other supporting technologies. That creates potential opportunities in areas that may not look like traditional AI investments at first glance.

For someone trying to simplify a portfolio, this broader perspective can be more useful than chasing whichever AI stock is dominating social media on a particular day.

Another stock worth highlighting is Uber $UBER ( ▲ 0.32% ).

Bill Ackman made Uber his largest holding at roughly 12.7% of his portfolio. Tepper also increased his Uber position, while Terry Smith established a new position. Uber therefore appears in the portfolios of investors with very different investment styles.

Why does that matter?

Uber has evolved considerably from its early identity as a ride-hailing company. Its platform now spans mobility, delivery, advertising, and other services, giving the business multiple avenues for generating revenue and improving economics.

The company is also interesting because it represents a type of investment that can get overlooked when AI dominates market discussions. You do not necessarily need to own the most futuristic technology to participate in long-term growth. Sometimes the more interesting opportunity is a company that has already built a large platform and is gradually becoming more profitable and efficient.

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Private-market exposure adds another fascinating layer to the filings.

SpaceX appeared as a disclosed position or strategic investment associated with several major investors and companies, including Nvidia, AMD, David Tepper's Appaloosa Management, and Daniel Loeb's Third Point.

But the most striking example came from Gavin Baker, where SpaceX represented approximately 32.5% of the portfolio.

That is an extraordinary level of concentration and demonstrates just how much conviction some investors have in SpaceX's long-term potential.

Of course, most individual investors cannot simply purchase SpaceX shares through a traditional brokerage account. That makes the lesson less about copying the position and more about recognizing the themes attracting private capital: space infrastructure, satellite connectivity, launch services, autonomous systems, and the intersection between space and advanced technology.

The selling activity is just as useful as the buying.

David Tepper reduced positions in Alibaba (BABA), Qualcomm (QCOM), Whirlpool (WHR), AMD, and Micron. Terry Smith made broader reductions across Alphabet, Fortinet (FTNT), Philip Morris (PM), Texas Instruments (TXN), IDEX (IEX), ADP, and Meta Platforms (META).

That does not automatically mean these investors have turned bearish on every company they trimmed.

Portfolio managers regularly reduce positions because a stock has become too large relative to the rest of the portfolio, because the valuation has changed, because capital is being redirected toward a stronger opportunity, or simply because portfolio risk needs to be adjusted.

This is why quarterly filings should never be interpreted as a simple buy list and sell list.

A 40% reduction in a position can still leave the investor with substantial exposure. Likewise, a new position might be intentionally tiny and carry very little influence on the overall portfolio.

The size of the position often tells you more than the existence of the position itself.

Berkshire Hathaway remains an important example of this principle.

Its largest positions included Apple, American Express, Alphabet, Coca-Cola (KO), and Bank of America (BAC). Berkshire also increased its exposure to Delta Air Lines (DAL) by roughly 44% and Lennar (LEN) by about 30%, while initiating a small position in D.R. Horton (DHI).

That mix is revealing because it is not a portfolio built around one fashionable theme. It combines technology, consumer brands, financial services, airlines, and housing.

The underlying philosophy is much simpler: own businesses that have characteristics worth holding through different economic environments.

That approach can be particularly useful when you are overwhelmed by the constant stream of new stock ideas. You do not need a portfolio containing every emerging industry. You need a manageable collection of businesses whose economics you can actually understand.

The filings also contained several less obvious names.

David Einhorn's Greenlight Capital had Green Brick Partners $GRBK ( ▲ 1.48% ) as its largest position at approximately 19.3% of the portfolio, followed by Fluor $FLR ( ▲ 0.5% ) and Canadian National Railway $CNI ( ▲ 1.26% ).

Howard Marks' Oaktree Capital added companies including Sea Limited $SE ( ▲ 0.25% ), MakeMyTrip $MMYT ( ▼ 0.54% ), Matthews International, Quantum Corporation, and Surgery Partners.

Chuck Akre continued to concentrate heavily on Mastercard $MA ( ▲ 1.18% ), with Moody's $MCO ( ▲ 0.91% ), Brookfield $BN ( ▲ 0.77% ), and Kroger $KR ( ▲ 2.81% ) also among his significant positions.

Chris Hohn's portfolio was even more concentrated, with GE $GE ( ▲ 1.08% ) representing roughly one-third of the portfolio, followed by Visa $V ( ▲ 1.45% ), Moody's, and S&P Global $SPGI ( ▼ 0.2% ).

Francois Rochon held significant positions in Alphabet, Meta, HEICO $HEI ( ▲ 1.27% ), and Charles Schwab $SCHW ( ▲ 2.29% ), while Pat Dorsey's portfolio included SML, AppLovin $APP ( ▼ 0.97% ), Royalty Pharma $RPRX ( ▲ 1.21% ), and Booking Holdings $BKNG ( ▼ 0.12% ).

These differences are important because they demonstrate that there is no single definition of a "smart money" stock. Some investors are focused on AI. Others prefer financial data businesses, industrial companies, consumer platforms, railroads, homebuilders, or healthcare.

The most useful takeaway is not that you should suddenly buy Alphabet, Amazon, Nvidia, Uber, or any other stock mentioned here.

It is that sophisticated investors continue to focus heavily on business quality, competitive advantages, long-term growth, and structural trends rather than simply reacting to the market's latest panic.

Alphabet and Amazon continue appearing across multiple portfolios. AI remains a major theme through Nvidia, TSMC, Micron, Broadcom, CoreWeave, ARM, and Cerebras. Energy companies such as Vistra, American Electric Power, and FirstEnergy provide another angle on the AI infrastructure boom. Uber is attracting increasing conviction, while SpaceX demonstrates the enormous interest surrounding private technology and space assets.

For you, the better question is not, "What did Warren Buffett buy?" It is, "What does this collection of decisions teach me about finding durable businesses?"

That shift matters.

You do not have the same portfolio, capital, time horizon, or risk tolerance as Warren Buffett, Bill Ackman, David Tepper, or Peter Thiel. Trying to replicate their trades after the fact can leave you buying yesterday's conviction at today's price.

Instead, use their filings as a research map. When several respected investors independently own the same company, investigate why. When they repeatedly trim a stock, investigate whether valuation, concentration, or fundamentals explain the decision. And when a theme appears across completely different portfolios, pay attention to the underlying economic force rather than the headline.

The market will always give you another reason to panic. The advantage comes from knowing what deserves your attention when everyone else is reacting.

Superinvestors are not necessarily showing you what to buy tomorrow. They are giving you clues about what they believe will still matter years from now.

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