APH — Amphenol Corp. Cl A COM

Ownership history in SNYDER CAPITAL MANAGEMENT L P  ·  63 quarters on record

AI Ownership Summary

SNYDER CAPITAL MANAGEMENT L P reported Amphenol Corp. Cl A COM (APH) in 63 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 3.47% in 2025 Q2. The latest visible filing shows APH at 2.16% 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 SNYDER CAPITAL MANAGEMENT L P's position in Amphenol Corp. 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
2025 Q4

APH was reported at 2.16% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
3.47% in 2025 Q2

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 2025 Q4

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 SNYDER CAPITAL MANAGEMENT L P fund profile SNYDER CAPITAL MANAGEMENT L P full holdings
How SNYDER CAPITAL MANAGEMENT L P held APH — position size vs. price
% of Fund (quarterly)    APH price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 857,488 -465,611 -35.2% 2.16% $115.9M 2026-02-14 (Est.) $146.43
2025 Q3 REDUCED 1,323,099 -328,681 -19.9% 3.10% $163.7M 2025-11-12 $141.37
2025 Q2 REDUCED 1,651,780 -225,630 -12.0% 3.47% $163.1M 2025-08-12 $111.26
2025 Q1 REDUCED 1,877,410 -154,675 -7.6% 2.69% $123.1M 2025-05-15 $85.37
2024 Q4 ADDED 2,032,085 +141,285 +7.5% 2.95% $141.1M 2025-02-14 $68.22
2024 Q3 ADDED 1,890,800 +125,128 +7.1% 2.56% $123.2M 2024-11-14 $71.70
2024 Q2 ADDED 1,765,672 +845,218 +91.8% 2.67% $119.0M 2024-08-14 $63.88
2024 Q1 REDUCED 920,454 -54,746 -5.6% 2.27% $106.2M 2024-05-15 $64.93
2023 Q4 REDUCED 975,200 -46,270 -4.5% 2.18% $96.7M 2024-02-14 $51.12
54 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

MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC 3Y 7Y 8.05% LYNWOOD PRICE CAPITAL MANAGEMENT LP 7.13% James Hambro & Partners LLP 3Y 7Y 7.04% Manitou Investment Management Ltd. 3Y 7Y 6.16% HENDLEY & CO INC 3Y 7Y 6.05% JACOBSON & SCHMITT ADVISORS, LLC 3Y 7Y 5.5% Amanah Holdings Trust 5.32% NORTH POINT PORTFOLIO MANAGERS CORP/OH 3Y 7Y 5.09% DUDLEY & SHANLEY, INC. 3Y 7Y 5.08% Reliant Investment Management, LLC 3Y 7Y 4.56%

FAQ About SNYDER CAPITAL MANAGEMENT L P and APH

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

How long has SNYDER CAPITAL MANAGEMENT L P reported owning APH?

SNYDER CAPITAL MANAGEMENT L P reported APH across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported APH position in SNYDER CAPITAL MANAGEMENT L P's portfolio?

The largest reported portfolio weight for APH was 3.47% in 2025 Q2.

What is the latest reported APH position on this page?

The most recent filing on this page is 2025 Q4, when SNYDER CAPITAL MANAGEMENT L P reported 857,488 shares, equal to 2.16% of portfolio, with an estimated market value of $115.9M.

What does the chart on this APH ownership page compare?

The chart compares SNYDER CAPITAL MANAGEMENT L P'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.

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