AerCap Holdings NV (AER) Q4 2025 Institutional Holdings and Activity Report

I. Holdings Landscape

From a structural perspective, the institutional concentration of AerCap is remarkably balanced. The Herfindahl-Hirschman Index (HHI) for the stock stands at 802.99 , which is classified as low . This low HHI value suggests that the holding structure is highly dispersed among various players rather than being dominated by one or two "elephant" investors who could single-handedly dictate price action or liquidity. In the context of market stability, a low concentration level is generally a positive signal for retail and smaller institutional investors, as it reduces the "key holder risk." When holdings are spread across 51 diverse entities, the exit or entry of a single manager is less likely to cause catastrophic volatility, ensuring a more orderly market for the underlying shares.

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II. Institutional Movement Analysis

The most consequential movement this quarter was the initiation of a massive new position by Bill Nygren of the Oakmark Select Fund . Nygren is widely regarded as one of the preeminent value investors of his generation, known for taking concentrated, high-conviction stakes in companies he believes are trading at a significant discount to their intrinsic value. The fund acquired 5,840,480 shares , valued at approximately $839.63 million . This single move instantly made Oakmark one of the most important holders of AerCap. For a fund of Oakmark's size (MEGA AUM level), allocating 1.06% of its portfolio to a new position in a single quarter is a powerful bullish signal. It suggests that Nygren views the aviation leasing sector, and AerCap specifically, as possessing a highly favorable risk-reward profile. This "Core Position" entry acts as a significant validation of AerCap’s fundamental value proposition.

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III. Capital Flow Interpretation

The data shows a total net inflow of 2,739,878 shares . This was achieved through a total institutional inflow of approximately 7.88 million shares (from increases and new positions) compared to an outflow of 5.14 million shares (from decreases and exits). The fact that net inflow is positive is a bullish signal, especially when considering that the total number of institutions decreasing their positions (25) was higher than those increasing (18). This mathematical reality confirms that the buyers this quarter were far more aggressive and committed larger amounts of capital than the sellers. For every share sold by a trimming institution, the market found an eager buyer willing to absorb that supply and then some.

The distribution of trade sizes provides further clarity on who is driving these flows. The "large trade" category for buys was particularly dominant. Seven institutions engaged in large-scale buying, led by Bill Nygren's Oakmark Select Fund and UBS Group . These seven institutions alone were responsible for the vast majority of the shares added this quarter. Large buys typically represent "informed" or "institutional" conviction, as they require significant capital and often involve deep due diligence.

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IV. Executive Trading Signals

This lack of trading activity can be interpreted in several ways. First, it is common for executives to be restricted from trading during "quiet periods" surrounding earnings announcements or major corporate developments. AerCap, as a major player in the capital-intensive aviation leasing industry, often has sensitive negotiations regarding fleet acquisitions or debt refinancing that could trigger such restrictions. Second, the absence of selling is, in itself, a form of stability signal. If executives believed the stock was significantly overvalued or that the company faced immediate internal crises, one might expect to see executed sales for "personal financial planning" or "diversification." The fact that they are holding onto their existing equity stakes suggests a level of comfort with the company's current trajectory and valuation.

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. Analyst Rating Signals

The price target of $159 compared to the reported price of $144 implies an expected upside of approximately 10.42% . In the world of large-cap industrial stocks, a double-digit upside expectation from a major analyst is a strong vote of confidence. Because the highest, lowest, and average target prices are all currently aligned at $159 (based on the provided initiation data), it suggests a "unified" target for this specific observation window. While this lack of spread means there is currently little disagreement among the latest reporting analysts, it also means the "bear case" from the analyst community is currently under-represented in the recent updates.

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. Comprehensive Assessment and Investment Insights

Institutional Behavior vs. Executive Silence : While the insiders (executives) have remained silent during this window, the institutions have been loud. This divergence is not necessarily bearish; rather, it suggests that the current "value" in AerCap is more apparent to external "deep value" specialists than it is to insiders who may be focused on long-term operational execution or are restricted by governance windows. 3. MEGA Institution Divergence : We see a fascinating split among the titans. While D.E. Shaw and Franklin Resources trimmed their stakes, UBS and Oakmark added aggressively. This "clash of the titans" often occurs when a stock is at a valuation "pivot point." The fact that the net result was a positive inflow suggests the buyers currently have the upper hand in terms of conviction and capital.

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.