Wellington Management Q1 2026 13F Holdings and Activity Report

I. Institutional Overview

Wellington Management stands as one of the world’s most formidable and respected investment management firms, a true titan in the institutional landscape. As of the first quarter of 2026, specifically the snapshot provided on March 31, 2026, the firm manages a staggering portfolio value of approximately $532.45 billion. This scale is not merely a reflection of capital under management but a testament to the firm’s deep-rooted influence across global equity markets. With 1,756 distinct holdings, Wellington exemplifies a sophisticated balance between massive diversification and high-conviction thematic betting. This dual nature allows the institution to act as a "market-maker" in some respects, where its capital flows can significantly influence sector momentum and individual stock valuations.

This section shows only part of the complete report. View the app for the full analysis, position-level detail, and quarter-over-quarter tracking.

II. Sector Allocation Analysis

A deeper look at the sub-sector trends suggests that Wellington is looking beyond the initial "AI hype" cycle. While they remain heavily invested in the builders of AI (the semiconductor firms), the increasing weight in Industrials (9.38%) and Energy (4.88%) suggests a focus on the "physical layer" of the new economy. AI data centers require massive amounts of power and sophisticated cooling systems, which drives demand for industrial equipment and energy resources. This "picks and shovels" approach to the AI revolution is a hallmark of institutional maturity—moving from the obvious winners to the secondary and tertiary beneficiaries.

Wellington’s sector layout paints a picture of an institution preparing for a "moderate growth, persistent inflation" environment. The heavy tilts toward Technology and Healthcare provide the growth engine, while Financials and Energy provide protection against inflation and rising rates. This is a "weather-all" portfolio designed to capture upside in a bull market while providing significant structural protection through diversification and defensive sector weights. The firm is clearly prioritizing companies with strong balance sheets and the ability to pass on costs to consumers, reflecting a sophisticated understanding of the 2026 macroeconomic landscape.

This section shows only part of the complete report. View the app for the full analysis, position-level detail, and quarter-over-quarter tracking.

III. Top 10 Holdings Deep Dive

NVIDIA remains Wellington’s largest single holding, a position it has held with high conviction since 2015. With a market value of over $23.34 billion, it represents the cornerstone of the firm’s technology strategy. However, the 4.87% reduction in shares this quarter is a classic example of "institutional profit-taking." After years of meteoric growth driven by the AI hardware explosion, Wellington is slightly reducing its exposure to manage risk and lock in gains. This is not a signal of lost faith in the company’s fundamentals; rather, it is a tactical adjustment. The weight change from 4.6% to 4.36% shows that despite the share reduction, the stock's market performance helped maintain its dominant position in the portfolio. NVIDIA is a "conviction holding" that Wellington is now treating as a "core allocation" to be periodically rebalanced. The logic here is simple: while NVIDIA’s moat in AI chips is unrivaled, the law of large numbers and potential cyclicality in data center spending necessitate a more cautious position size.

This section shows only part of the complete report. View the app for the full analysis, position-level detail, and quarter-over-quarter tracking.

IV. Major Buys/Additions

The addition of over 12.3 million shares of AstraZeneca, an estimated $2.40 billion investment, is the most significant offensive move this quarter. This 108.09% increase in the position size catapults the stock into a major role within the portfolio. The motivation here is likely a "growth acceleration bet." AstraZeneca has one of the strongest pipelines in oncology, rare diseases, and cardiovascular medicine. In a 2026 environment where pharmaceutical innovation is accelerating through AI-driven drug discovery, Wellington sees AstraZeneca as a leader with a superior risk-reward profile. The company’s global reach and diversified revenue streams make it an ideal "defensive growth" play that can outperform even if the broader economy slows.

This section shows only part of the complete report. View the app for the full analysis, position-level detail, and quarter-over-quarter tracking.

V. Major Sells and Exits

The reduction of $3.11 billion in Apple shares is the most significant "sell" operation this quarter. As discussed in the top 10 dive, this is a "Major Strategic Contraction." Wellington is signaling that the era of Apple’s undisputed dominance in the portfolio is over. The motivation is likely a combination of profit-taking and a fundamental reassessment of Apple’s growth trajectory. In a market hungry for AI breakthroughs, Apple’s more deliberate (and some say slow) approach has led to a "logical clearing" of some shares to make room for more aggressive tech plays like Meta or Microsoft.

Wellington reduced its stake in Alphabet by 16.87%, realizing an estimated $2.78 billion. This is a "Strategic Retreat" driven by the perceived risk that generative AI could disrupt Google’s core search monopoly. While Alphabet remains a top 5 holding, the size of this reduction suggests that Wellington is no longer comfortable with the previous weight. They are hedging their bets, recognizing that while Google has immense AI capabilities, the transition from a "link-based" search engine to an "answer-based" AI assistant poses significant risks to its high-margin advertising business.

This section shows only part of the complete report. View the app for the full analysis, position-level detail, and quarter-over-quarter tracking.

VI. Investment Insights and Risk Warnings

The logic chain is clear: 1. Sold What : Legacy hardware (Apple), search-dependent tech (Alphabet), and regulatory-sensitive healthcare (UnitedHealth). 2. Why Sell : To mitigate the risks of AI disruption, hardware saturation, and government intervention in margins. 3. Bought What : Advanced semiconductor equipment (KLA), diversified AI software (Microsoft, Meta), global biotech pipelines (AstraZeneca), and energy security (Diamondback Energy). 4. Why Buy : To capture the "second wave" of the AI revolution (the tools and the software) and to hedge against inflation through energy and high-margin healthcare. 5. Overall Portfolio Change : The portfolio has become more "offensive" in its growth targets but more "defensive" in its sector diversification.

For the individual investor, the reference value of these operations lies in the "industry trend judgment." Wellington is telling us that the "AI story" is moving from the chipmakers (NVDA) to the equipment makers (KLAC) and the software integrators (MSFT). Furthermore, their massive bet on AstraZeneca suggests that the "Biotech Renaissance" is a core theme for 2026. However, investors should be cautious about simply imitating the regional bank exits, as Wellington’s move may be driven by specific institutional liquidity needs or a different risk budget that doesn't apply to a smaller, long-term personal portfolio.

This section shows only part of the complete report. View the app for the full analysis, position-level detail, and quarter-over-quarter tracking.

Sources and limitations

This report uses public U.S. Securities and Exchange Commission Form 13F disclosures and structured data maintained by 13F Hub. A 13F filing is a quarter-end snapshot of reportable long positions, is normally published with a delay, and does not disclose every short position, cash balance, bond, derivative, or non-U.S. asset.

Narrative content is prepared from the same-period SEC disclosure and 13F Hub structured data, then checked before publication. This material is for research and education, not personalized investment advice.