KINNEY ASSET MANAGEMENT, LLC reported AVANTOR INC (AVTR) in 2 quarterly 13F filings from 2025 Q2 through 2025 Q3. Peak portfolio weight reached 34.31% in 2025 Q3. The latest visible filing shows AVTR at 34.31% 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.
This page is designed to answer the real investor question behind a 13F filing: how meaningful was KINNEY ASSET MANAGEMENT, LLC's position in AVANTOR INC, 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.
AVTR was reported at 34.31% of portfolio in the most recent visible filing.
Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.
Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.
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.
These are the practical questions this page is built to answer before you even open the full history table.
KINNEY ASSET MANAGEMENT, LLC reported AVTR across 2 quarterly 13F filings, from 2025 Q2 through 2025 Q3.
The largest reported portfolio weight for AVTR was 34.31% in 2025 Q3.
The most recent filing on this page is 2025 Q3, when KINNEY ASSET MANAGEMENT, LLC reported 1,845,000 shares, equal to 34.31% of portfolio, with an estimated market value of $23.0M.
The chart compares KINNEY ASSET MANAGEMENT, LLC's quarterly AVTR 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.