Top buys and positions from recent 13F filings (Q2 2025)
The U.S. Securities and Exchange Commission (SEC) requires institutional investment managers with at least $100 million in assets under management to disclose equity holdings every quarter in Form 13F. These filings offer a delayed but authoritative look at what major hedge funds and asset managers are buying and selling. Because the filings come roughly six weeks after a quarter ends, the latest available reports for the time of this writing (August 2025) correspond to the second quarter of 2025 (Q2 2025). Below is an overview of notable positions and the largest additions (“top buys”) for five prominent investment managers based on their Q2 2025 13F filings.
Berkshire Hathaway (Warren Buffett)
Top positions: Buffett’s Berkshire Hathaway concentrates its portfolio in a handful of long‑term holdings. In Q2 2025, Apple remained the largest position, representing more than one‑fifth of the portfolio (22.31 %). American Express (18.78 %), Bank of America (11.12 %), Coca‑Cola (10.99 %) and Chevron (6.79 %) rounded out the top five holdings.
Major buys and sells: Buffett mostly tweaks positions rather than making sweeping changes. In the Q2 report Berkshire added to its energy stake by purchasing about 3.45 million shares of Chevron, which increased the oil company’s weight in the portfolio. The fund also increased its position in Constellation Brands by roughly 1.39 million shares and bought 132,000 shares of Heico Corp’s Class A stock (HEI.A). On the other hand, Berkshire trimmed its massive Apple holding by selling roughly 20 million shares (a 6.67 % reduction), resulting in a 1.59 % drop in Apple’s portfolio weight. Overall, the firm’s top buys were modest relative to the size of the portfolio, reflecting Buffett’s preference for sticking with well‑established holdings.
Pershing Square Capital Management (Bill Ackman)
Top positions: Pershing Square, run by activist investor Bill Ackman, remains a concentrated portfolio. In Q2 2025 the fund’s top holdings included ride‑sharing company Uber (20.59 % of the portfolio), Brookfield Corp (18.54 %), Restaurant Brands International (11.11 %), a new position in Amazon (9.31 %) and real‑estate firm Howard Hughes (9.27 %).
Major buys and sells: Ackman made a few notable moves during Q2 2025. The fund added 925,000 shares of Alphabet (Class A), a 20.84 % increase in shares that boosted the stock’s portfolio weight by 1.19 %. Amazon was a new entry, representing 9.31 % of the portfolio. Smaller increases were made to Brookfield (+155,740 shares) and Hertz Global (+241,127 shares). Pershing Square completely exited Canadian Pacific Kansas City, reducing the portfolio by 7.57 %. These moves show a continued focus on large‑cap consumer and technology names with a few opportunistic trades.
Bridgewater Associates (Ray Dalio)
Top positions: Unlike many hedge funds, Bridgewater diversifies across exchange‑traded funds (ETFs) and large‑cap equities. Its Q2 2025 13F showed that the SPDR S&P 500 ETF (SPY) was the largest holding at roughly 6.5 % of the portfolio, followed by iShares Core S&P 500 ETF (IVV) at 5.8 %, semiconductor giant Nvidia at 4.6 %, the iShares MSCI Emerging Markets ETF (IEMG) at 4.2 %, Alphabet Class A at 4 % and Microsoft at 3.4 %. Other top names included Meta Platforms, Salesforce and GE Vernova.
Major buys and sells: An August 2025 summary of Bridgewater’s Q2 13F highlighted several significant shifts. The firm initiated a new position in Arm Holdings, buying roughly 474,000 shares worth $76.6 million. It increased its positions in Nvidia, Microsoft, Alphabet and Meta Platforms, bringing Nvidia’s holding to 7.22 million shares (≈$1.14 billion. Conversely, Bridgewater exited Chinese technology stocks such as Alibaba, Baidu, JD.com and PDD, and reduced its stakes in SPY, Constellation Energy and Apple. These moves underscore the fund’s rotation toward leading U.S. technology companies while dialing back exposure to China and broad‑market ETFs.
ARK Investment Management (Cathie Wood)
Top positions: The innovation‑focused ARK funds continue to have a high concentration in disruptive technology companies. Data from Q2 2025 shows Tesla as the largest holding with 3.08 million shares (about 7.6 % of the portfolio). Other top positions included Robinhood Markets (7.79 million shares, 6.2 %), Coinbase Global (2.62 million shares, 6.1 %), Roku (≈4.6 % of the portfolio) and Palantir Technologies.
Major buys and sells: Cathie Wood’s team shifted some holdings during Q2 2025. According to AInvest, ARK purchased approximately $40.9 million of Advanced Micro Devices (AMD) and acquired more than 300,000 shares of Twist Bioscience (about $8.3 million). They also trimmed their holdings of Shopify (about $15 million sold) and sold 111,803 shares of Roblox, indicating a rotation away from some e‑commerce and gaming companies. Additional data from Stockcircle shows ARK reduced its stakes in Robinhood (‑24 %) and Coinbase (‑14.5 %) while maintaining them as top positions.
BlackRock Inc.
BlackRock, the world’s largest asset manager, files a vast 13F with thousands of holdings. While details of every position are expansive, third‑party data highlight notable changes during Q2 2025.
Top buys: Wallstrank’s summary of BlackRock’s Q2 2025 13F reveals that the firm significantly increased its position in Nvidia (NVDA) by about $205 billion, making the chipmaker its largest addition. Other major purchases included Chipotle Mexican Grill (CMG) — an increase of roughly $6.73 billion, Microsoft (MSFT) – $3.56 billion, Exxon Mobil (XOM) – $3.53 billion, and GE Vernova (GEV) – $3.1 billion.
Top sells: BlackRock’s largest reductions were Pioneer Natural Resources (‑$4.23 billion), Shockwave Medical (‑$1.23 billion), Broadcom (‑$1.14 billion), Super Micro Computer (‑$1.12 billion) and AbbVie (‑$1.12 billion). The firm’s portfolio remained heavily tilted toward the technology sector (≈30.35 % of holdings) along with significant allocations to health care (12.11 %), financials (11.70 %), consumer discretionary (9.74 %) and industrials (8.48 %). BlackRock’s sheer size means that even modest percentage changes translate to billions of dollars.
Takeaways
The Q2 2025 13F filings reveal that major institutional investors continue to favor large‑cap technology and consumer names. Berkshire Hathaway remains concentrated in a handful of blue‑chip companies with only incremental portfolio adjustments. Pershing Square added Alphabet and Amazon while exiting Canadian Pacific Kansas City. Bridgewater made a notable shift toward U.S. technology—adding Arm and boosting stakes in Nvidia and Microsoft—while paring back Chinese equities. ARK Investment Management stayed loyal to its disruptive‑technology thesis but rebalanced by buying AMD and Twist Bioscience and trimming Shopify and Roblox. BlackRock’s mammoth portfolio saw huge additions to Nvidia and Chipotle while reducing energy and health‑care names. Together, these filings illustrate how leading managers are positioning themselves for the second half of 2025—leaning toward U.S. technology giants while selectively adjusting exposure to consumer, energy and healthcare sectors.
Why these stocks matter for ordinary investors
Although 13F reports are backward‑looking, they offer a rare glimpse into the convictions of professional money managers. When multiple managers make large moves into similar names—such as Nvidia, Microsoft and Amazon—it suggests that secular themes like artificial intelligence, cloud computing and consumer digitization are driving investment decisions. Berkshire’s continued exposure to Apple, Coca‑Cola and American Express underscores the enduring appeal of wide‑moat businesses with strong cash generation. Meanwhile, Pershing Square’s new stake in Amazon and increased investment in Alphabet hint at a belief that dominant platform companies still have significant runway.
Investors who follow 13F filings often watch these holdings because they can highlight emerging trends before they become widely discussed. Bridgewater’s purchase of Arm Holdings and its increased stake in semiconductor and software leaders signal confidence in the chip and artificial‑intelligence supply chain. ARK’s buy‑the‑dip approach to AMD and Twist Bioscience reflects a continued bet on innovative biotech and high‑performance computing. BlackRock’s multi‑billion‑dollar addition to Nvidia shows how passive and index‑based managers are overweighting companies at the heart of AI, while its reduction in energy and healthcare may foreshadow sector‑level shifts.
That said, individual investors should remember that 13F data is delayed by up to 45 days and does not reveal future trades or hedging strategies. These filings should be viewed as one piece of research among many. The most actively bought stocks may attract attention because they align with long‑term secular growth themes, but they can also be volatile. Investors considering these names should perform their own due diligence and consider how each company fits within their time horizon, risk tolerance and diversification needs.
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