ECVT — Ecovyst Inc

Ownership history in HARBOR CAPITAL ADVISORS, INC.  ·  8 quarters on record

AI Ownership Summary

HARBOR CAPITAL ADVISORS, INC. reported Ecovyst Inc (ECVT) in 8 quarterly 13F filings from 2024 Q1 through 2025 Q4. Peak portfolio weight reached 0.69% in 2025 Q2. The latest visible filing shows ECVT at 0.44% 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.

What this ECVT ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was HARBOR CAPITAL ADVISORS, INC.'s position in Ecovyst 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.

Freshest filing
Latest Reported Filing
2025 Q4

ECVT was reported at 0.44% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.69% 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
2024 Q1 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.

ECVT stock page HARBOR CAPITAL ADVISORS, INC. fund profile HARBOR CAPITAL ADVISORS, INC. full holdings
How HARBOR CAPITAL ADVISORS, INC. held ECVT — position size vs. price
% of Fund (quarterly)    ECVT price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 8 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 584,647 +105,696 +22.1% 0.44% $5.7M 2026-02-14 (Est.) $11.62
2025 Q3 REDUCED 478,951 -1,519,218 -76.0% 0.33% $4.2M 2025-10-15 $8.35
2025 Q2 REDUCED 1,998,169 -164,965 -7.6% 0.69% $16.4M 2025-07-09 $8.68
2025 Q1 ADDED 2,163,134 +162,690 +8.1% 0.61% $13.4M 2025-04-14 $5.91
2024 Q4 ADDED 2,000,444 +244,081 +13.9% 0.67% $15.3M 2025-01-10 $7.50
2024 Q3 ADDED 1,756,363 +805,128 +84.6% 0.52% $12.0M 2024-10-29 $6.28
2024 Q2 ADDED 951,235 +712,292 +298.1% 0.65% $8.5M 2024-07-09 $8.89
2024 Q1 INITIATED 238,943 — — 0.35% $2.7M 2024-05-13 $9.67

🏢 Other funds also holding ECVT

As of 2026 Q1 — sorted by position size

SEVEN MILE ADVISORY 0.2% WEDGE CAPITAL MANAGEMENT L L P/NC 3Y 7Y 0.06% Inspire Investing, LLC 3Y 7Y 0.04% Versant Capital Management, Inc 3Y 7Y 0.01% Sterling Capital Management LLC 3Y 7Y 0.01% SG Americas Securities, LLC 3Y 7Y 0.01% WEDBUSH SECURITIES INC 3Y 7Y 0.0% Investors Research Corp 3Y 7Y 0.0% State of Alaska, Department of Revenue 3Y 7Y 0.0% GAMMA Investing LLC 0.0%

FAQ About HARBOR CAPITAL ADVISORS, INC. and ECVT

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

How long has HARBOR CAPITAL ADVISORS, INC. reported owning ECVT?

HARBOR CAPITAL ADVISORS, INC. reported ECVT across 8 quarterly 13F filings, from 2024 Q1 through 2025 Q4.

What was the largest reported ECVT position in HARBOR CAPITAL ADVISORS, INC.'s portfolio?

The largest reported portfolio weight for ECVT was 0.69% in 2025 Q2.

What is the latest reported ECVT position on this page?

The most recent filing on this page is 2025 Q4, when HARBOR CAPITAL ADVISORS, INC. reported 584,647 shares, equal to 0.44% of portfolio, with an estimated market value of $5.7M.

What does the chart on this ECVT ownership page compare?

The chart compares HARBOR CAPITAL ADVISORS, INC.'s quarterly ECVT 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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