MPWR β€” Monolithic Power Systems Inc

Ownership history in PARK NATIONAL CORP /OH/  Β·  5 quarters on record

AI Ownership Summary

PARK NATIONAL CORP /OH/ reported Monolithic Power Systems Inc (MPWR) in 5 quarterly 13F filings from 2025 Q1 through 2026 Q1. Peak portfolio weight reached 1.18% in 2025 Q4. The latest visible filing shows MPWR at 0.94% 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 MPWR ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was PARK NATIONAL CORP /OH/'s position in Monolithic Power Systems 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
2026 Q1

MPWR was reported at 0.94% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.18% in 2025 Q4

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2025 Q1 to 2026 Q1

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.

How PARK NATIONAL CORP /OH/ held MPWR β€” position size vs. price
% of Fund (quarterly)    MPWR price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
πŸ“‹ Quarterly Holdings History 5 quarters  β–Ύ
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED 28,114 -13,492 -32.4% 0.94% $30.7M 2026-04-16 $1402.81
2025 Q4 ADDED 41,606 +1,763 +4.4% 1.18% $37.7M 2026-01-05 $953.12
2025 Q3 REDUCED 39,843 -1,270 -3.1% 1.15% $36.7M 2025-10-01 $912.50
2025 Q2 ADDED 41,113 +7,479 +22.2% 0.99% $30.1M 2025-07-01 $742.91
2025 Q1 INITIATED 33,634 β€” β€” 0.72% $19.5M 2025-04-02 $586.20

FAQ About PARK NATIONAL CORP /OH/ and MPWR

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

How long has PARK NATIONAL CORP /OH/ reported owning MPWR?

PARK NATIONAL CORP /OH/ reported MPWR across 5 quarterly 13F filings, from 2025 Q1 through 2026 Q1.

What was the largest reported MPWR position in PARK NATIONAL CORP /OH/'s portfolio?

The largest reported portfolio weight for MPWR was 1.18% in 2025 Q4.

What is the latest reported MPWR position on this page?

The most recent filing on this page is 2026 Q1, when PARK NATIONAL CORP /OH/ reported 28,114 shares, equal to 0.94% of portfolio, with an estimated market value of $30.7M.

What does the chart on this MPWR ownership page compare?

The chart compares PARK NATIONAL CORP /OH/'s quarterly MPWR 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.

← Back to PARK NATIONAL CORP /OH/ Holdings