Ownership history in BLAIR WILLIAM & CO/IL · 69 quarters on record
This page tracks every 13F SEC filing in which BLAIR WILLIAM & CO/IL reported a position in AMPHENOL CORP NEW CL A COM (APH). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 2,653,891 | -97,623 | -3.5% | 0.96% | $358.6M | $135.14 |
| 2025 Q3 | REDUCED | 2,751,514 | -219,934 | -7.4% | 0.91% | $340.5M | $123.51 |
| 2025 Q2 | REDUCED | 2,971,448 | -55,902 | -1.8% | 0.82% | $293.4M | $98.42 |
| 2025 Q1 | REDUCED | 3,027,350 | -42,844 | -1.4% | 0.60% | $198.6M | $65.26 |
| 2024 Q4 | REDUCED | 3,070,194 | -22,496 | -0.7% | 0.62% | $213.2M | $68.92 |
| 2024 Q3 | REDUCED | 3,092,690 | -39,794 | -1.3% | 0.59% | $201.5M | $64.52 |
| 2024 Q2 | ADDED | 3,132,484 | +1,596,110 | +103.9% | 0.65% | $211.0M | $66.54 |
| 2024 Q1 | ADDED | 1,536,374 | +4,249 | +0.3% | 0.56% | $177.2M | $56.87 |
| 2023 Q4 | REDUCED | 1,532,125 | -12,645 | -0.8% | 0.52% | $151.9M | $48.77 |
| 2023 Q3 | ADDED | 1,544,770 | +364 | +0.0% | 0.50% | $129.7M | $41.23 |
As of 2025 Q4 — sorted by position size