CHECK CAPITAL MANAGEMENT INC/CA AER — AerCap Holdings

Ownership history in CHECK CAPITAL MANAGEMENT INC/CA  ·  21 quarters on record

AI Ownership Summary

CHECK CAPITAL MANAGEMENT INC/CA reported AerCap Holdings (AER) in 21 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 3.46% in 2025 Q4. The latest visible filing shows AER at 3.26% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this AER ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CHECK CAPITAL MANAGEMENT INC/CA's position in AerCap Holdings, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

AER was reported at 3.26% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
3.46% in 2025 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

AER stock page CHECK CAPITAL MANAGEMENT INC/CA fund profile CHECK CAPITAL MANAGEMENT INC/CA full holdings
How CHECK CAPITAL MANAGEMENT INC/CA held AER — position size vs. price
% of Fund (quarterly)    AER price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 817,655 -9,707 -1.2% 3.26% $112.2M 2026-05-04 $137.35
2025 Q4 REDUCED — — — 827,362 -4,375 -0.5% 3.46% $118.9M 2026-02-06 $139.31
2025 Q3 REDUCED — — — 831,737 -6,592 -0.8% 3.32% $100.6M 2025-11-06 $131.53
2025 Q2 REDUCED — — — 838,329 -14,932 -1.7% 3.32% $98.1M 2025-07-25 $111.30
2025 Q1 REDUCED — — — 853,261 -9,541 -1.1% 2.54% $87.2M 2025-05-02 $105.66
2024 Q4 REDUCED — — — 862,802 -11,810 -1.4% 2.46% $82.6M 2025-01-30 $94.16
2024 Q3 ADDED — — — 874,612 +3,360 +0.4% 2.55% $82.8M 2024-11-06 $97.46
2024 Q2 REDUCED — — — 871,252 -639 -0.1% 2.69% $81.2M 2024-07-25 $91.50
2024 Q1 REDUCED — — — 871,891 -7,593 -0.9% 2.49% $75.8M 2024-04-19 $81.47
2023 Q4 REDUCED — — — 879,484 -9,811 -1.1% 2.40% $65.4M 2024-01-31 $74.96
11 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding AER

As of 2026 Q1 — sorted by position size

WGI DM, LLC 33.86% High Ground Investment Management LLP 3Y 30.86% MBB PUBLIC MARKETS I LLC 3Y 18.52% 59 North Capital Management, LP 3Y 12.78% Dorsey Asset Management, LLC 3Y 7Y 12.27% L1 Capital International Pty Ltd 11.0% KIZE CAPITAL LP 3Y 8.74% Charter Oak Advisors LP 8.35% REDWOOD CAPITAL MANAGEMENT, LLC 3Y 7Y 8.23% M3F, Inc. 3Y 7Y 8.09%

FAQ About CHECK CAPITAL MANAGEMENT INC/CA and AER

These are the practical questions this page is built to answer before you even open the full history table.

How long has CHECK CAPITAL MANAGEMENT INC/CA reported owning AER?

CHECK CAPITAL MANAGEMENT INC/CA reported AER across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported AER position in CHECK CAPITAL MANAGEMENT INC/CA's portfolio?

The largest reported portfolio weight for AER was 3.46% in 2025 Q4.

What is the latest reported AER position on this page?

The most recent filing on this page is 2026 Q1, when CHECK CAPITAL MANAGEMENT INC/CA reported 817,655 shares, equal to 3.26% of portfolio, with an estimated market value of $112.2M.

What does the chart on this AER ownership page compare?

The chart compares CHECK CAPITAL MANAGEMENT INC/CA's quarterly AER portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did CHECK CAPITAL MANAGEMENT INC/CA time their AER position?

Based on 13F filing dates vs. subsequent AER price moves, CHECK CAPITAL MANAGEMENT INC/CA correctly timed 6 out of 20 reported position changes (30%). The annualised alpha on AER relative to SPY over the holding period was +5.9%.

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