APH — Amphenol Corp New Cl A COM

Ownership history in CARDEROCK CAPITAL MANAGEMENT INC  ·  75 quarters on record

AI Ownership Summary

CARDEROCK CAPITAL MANAGEMENT INC reported Amphenol Corp New Cl A COM (APH) in 75 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 4.05% in 2025 Q4. The latest visible filing shows APH at 3.54% 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 APH ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CARDEROCK CAPITAL MANAGEMENT INC's position in Amphenol Corp New Cl A COM, 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

APH was reported at 3.54% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
4.05% 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.

APH stock page CARDEROCK CAPITAL MANAGEMENT INC fund profile CARDEROCK CAPITAL MANAGEMENT INC full holdings
How CARDEROCK CAPITAL MANAGEMENT INC held APH — position size vs. price
% of Fund (quarterly)    APH price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED 113,454 -10,321 -8.3% 3.54% $14.3M 2026-04-10 $140.75
2025 Q4 REDUCED 123,775 -10,218 -7.6% 4.05% $16.7M 2026-01-09 $139.88
2025 Q3 REDUCED 133,993 -3,288 -2.4% 4.03% $16.6M 2025-10-17 $125.16
2025 Q2 REDUCED 137,281 -18,784 -12.0% 3.47% $13.6M 2025-07-10 $97.79
2025 Q1 REDUCED 156,065 -9,900 -6.0% 2.71% $10.2M 2025-05-27 $87.71
2024 Q4 REDUCED 165,965 -6,153 -3.6% 2.89% $11.5M 2025-01-15 $70.27
2024 Q3 REDUCED 172,118 -441 -0.3% 2.65% $11.2M 2024-10-16 $66.21
2024 Q2 ADDED 172,559 +87,909 +103.8% 3.04% $11.6M 2024-07-22 $65.29
2024 Q1 REDUCED 84,650 -3,837 -4.3% 2.74% $9.8M 2024-04-23 $56.22
2023 Q4 ADDED 88,487 +5,327 +6.4% 2.42% $8.8M 2024-01-23 $48.09
65 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding APH

As of 2026 Q1 — sorted by position size

JACOBSON & SCHMITT ADVISORS, LLC 3Y 7Y 5.5% Amanah Holdings Trust 5.32% DUDLEY & SHANLEY, INC. 3Y 7Y 5.08% Midway Capital Research & Management 4.55% Ayrshire Capital Management LLC 3Y 3.91% AVITY INVESTMENT MANAGEMENT INC. 3Y 7Y 3.63% Perennial Advisors, LLC 3Y 7Y 3.63% HALL LAURIE J TRUSTEE 3Y 7Y 2.67% PCB Capital LLC 2.17% COMMUNITY TRUST & INVESTMENT CO 3Y 7Y 1.52%

FAQ About CARDEROCK CAPITAL MANAGEMENT INC and APH

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

How long has CARDEROCK CAPITAL MANAGEMENT INC reported owning APH?

CARDEROCK CAPITAL MANAGEMENT INC reported APH across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported APH position in CARDEROCK CAPITAL MANAGEMENT INC's portfolio?

The largest reported portfolio weight for APH was 4.05% in 2025 Q4.

What is the latest reported APH position on this page?

The most recent filing on this page is 2026 Q1, when CARDEROCK CAPITAL MANAGEMENT INC reported 113,454 shares, equal to 3.54% of portfolio, with an estimated market value of $14.3M.

What does the chart on this APH ownership page compare?

The chart compares CARDEROCK CAPITAL MANAGEMENT INC's quarterly APH 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.

← Back to CARDEROCK CAPITAL MANAGEMENT INC Holdings