POWI — Power Integrations, Inc.

Ownership history in CONGRESS ASSET MANAGEMENT CO  ·  28 quarters on record

AI Ownership Summary

CONGRESS ASSET MANAGEMENT CO reported Power Integrations, Inc. (POWI) in 28 quarterly 13F filings from 2023 Q4 through 2025 Q3. Peak portfolio weight reached 0.28% in 2025 Q1. The latest visible filing shows POWI at 0.16% 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 POWI ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was CONGRESS ASSET MANAGEMENT CO's position in Power Integrations, 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 Q3

POWI was reported at 0.16% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.28% in 2025 Q1

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 Q3

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.

POWI stock page CONGRESS ASSET MANAGEMENT CO fund profile CONGRESS ASSET MANAGEMENT CO full holdings
How CONGRESS ASSET MANAGEMENT CO held POWI — position size vs. price
% of Fund (quarterly)    POWI price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 8 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 REDUCED 593,599 -125,074 -17.4% 0.16% $23.9M 2025-10-10 $34.27
2025 Q2 REDUCED 718,673 -18,461 -2.5% 0.28% $40.2M 2025-07-16 $52.89
2025 Q1 ADDED 737,134 +105,995 +16.8% 0.28% $37.2M 2025-04-11 $44.22
2024 Q4 ADDED 631,139 +9,264 +1.5% 0.26% $38.9M 2025-01-30 $58.69
2024 Q3 ADDED 621,875 +96,609 +18.4% 0.27% $39.9M 2024-10-28 $63.14
2024 Q2 ADDED 525,266 +37,760 +7.7% 0.26% $36.9M 2024-08-02 $64.31
2024 Q1 ADDED 487,506 +62,824 +14.8% 0.25% $34.9M 2024-04-11 $68.12
2023 Q4 ADDED 424,682 +35,037 +9.0% 0.27% $34.9M 2024-03-04 $70.63
20 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding POWI

As of 2025 Q4 — sorted by position size

S Squared Technology, LLC 3Y 7Y 1.79% Grandeur Peak Global Advisors, LLC 3Y 7Y 1.46% SNYDER CAPITAL MANAGEMENT L P 3Y 7Y 1.37% DISCIPLINED GROWTH INVESTORS INC /MN 3Y 7Y 1.36% Foresight Group Ltd Liability Partnership 1.19% QSV Equity Investors LLC 1.12% Tributary Capital Management, LLC 3Y 7Y 1.06% Copeland Capital Management, LLC 3Y 7Y 0.93% Granite Investment Partners, LLC 3Y 7Y 0.75% HERALD INVESTMENT MANAGEMENT Ltd 3Y 7Y 0.7%

FAQ About CONGRESS ASSET MANAGEMENT CO and POWI

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

How long has CONGRESS ASSET MANAGEMENT CO reported owning POWI?

CONGRESS ASSET MANAGEMENT CO reported POWI across 8 quarterly 13F filings, from 2023 Q4 through 2025 Q3.

What was the largest reported POWI position in CONGRESS ASSET MANAGEMENT CO's portfolio?

The largest reported portfolio weight for POWI was 0.28% in 2025 Q1.

What is the latest reported POWI position on this page?

The most recent filing on this page is 2025 Q3, when CONGRESS ASSET MANAGEMENT CO reported 593,599 shares, equal to 0.16% of portfolio, with an estimated market value of $23.9M.

What does the chart on this POWI ownership page compare?

The chart compares CONGRESS ASSET MANAGEMENT CO's quarterly POWI 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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