JANA Partners Q1 2026 13F Holdings and Activity Report

I. Institutional Overview

The current scale of the portfolio, sitting at $1.61 billion, suggests a stable yet potent capital base. When an institution manages over a billion dollars with only ten stocks, each position becomes a critical engine of performance. The average position size is roughly $160 million, representing about 10% of the total portfolio. This level of concentration indicates that JANA Partners is not merely an observer of market trends but an active participant in the lifecycle of its portfolio companies. In the world of institutional investing, such a low number of holdings typically signals an "activist" or "deep-value" mandate, where the manager spends more time analyzing the board composition and operational efficiency of a company than tracking its daily stock price fluctuations.

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

The top three sectors—Technology, Industrials, and Healthcare—collectively account for 68.98% of the total portfolio. This high level of concentration suggests that JANA Partners is making a thematic bet on the intersection of innovation and industrial efficiency. The dominance of Technology (26.75%) is particularly noteworthy, as it reflects a shift toward software-driven value creation. However, it is important to distinguish that JANA’s "Technology" is not necessarily speculative AI; rather, it appears to be focused on vertical software and infrastructure that provides essential services to other industries.

JANA’s sector allocation reveals a nuanced view of the interest rate environment. By increasing exposure to Financials and maintaining a heavy weight in Healthcare and Technology, the firm seems to be hedging against various inflation scenarios. Healthcare provides a natural defense against economic slowdowns due to its inelastic demand, while Technology and Financials can often pass on costs or benefit from higher interest margins and software pricing power. The overall posture is one of "offensive quality"—seeking growth but only in companies with strong competitive moats and clear catalysts for value realization.

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

This quarter, JANA reduced its position by 17.18% , selling approximately 852,057 shares. Despite this reduction, the stock remains the top holding. The reduction should be interpreted as "tactical rebalancing" rather than a loss of faith. After holding for nearly five years, it is likely that JANA is harvesting some gains or managing the position size to prevent it from becoming an overwhelming portion of the portfolio as they fund new ideas like Fiserv. The weight change was minimal (-0.19%), suggesting that the stock's price performance helped maintain its relative importance in the portfolio despite the share sales. This indicates a "core allocation" strategy where the firm is comfortable with the long-term thesis but is actively managing the risk of a single-stock concentration.

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

Motivation Analysis: This is a "growth acceleration bet." Fiserv has been undergoing a multi-year transformation from a legacy back-office bank processor to a front-end merchant acquisition powerhouse through its Clover platform. JANA likely sees a "valuation gap" between Fiserv and its high-growth fintech peers. By nearly doubling its stake, JANA is signaling that it believes the market is finally beginning to recognize the durability and scalability of Fiserv's integrated payments model. Fundamental Drivers: Fiserv benefits from high switching costs and a "sticky" customer base of thousands of financial institutions. As these banks face the existential threat of digital-only competitors, they are forced to increase their spending on Fiserv’s software. This creates a predictable, recurring revenue stream with high margins. JANA’s timing suggests they believe the company is at an inflection point where operating leverage will drive significant earnings surprises.

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

Nature of the Change: This is a "Mission Accomplished" or "Strategic Retreat." After five years of pushing for changes, including board seats and divestitures of underperforming divisions, JANA likely concluded that the remaining upside in TreeHouse was limited compared to new opportunities. The private-label food industry has faced significant headwinds from inflation and supply chain disruptions. Motivation Analysis: This is a High Amount + High Weight Change operation. By exiting a 7.15% position, JANA has completely removed its exposure to the private-label food sector. This suggests a fundamental shift in confidence regarding the industry's ability to drive further value through activism. The capital retrieved here was the primary source of funding for the massive Fiserv addition.

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

Logic Chain Summary: JANA has systematically sold off its exposure to the food and beverage industry (TreeHouse Foods, Freshpet) and trimmed its long-term industrial anchor (Mercury Systems). The firm then recycled that capital into a massive doubling of its stake in Fiserv and a continued buildup in Alkami Technology. This move represents a shift from "distressed value" activism to "growth-oriented" activism. JANA is no longer just looking for broken companies to fix; they are looking for market leaders (Fiserv, Cooper Companies) that are undergoing structural transformations and where they can act as a catalyst for even higher 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.

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.