Question 1

Does Congress Asset Management own MPWR stock?

Accepted Answer

Yes. As of its Q3 2026 13F, Congress Asset Management holds 74,381 shares of MPWR (Monolithic Power Systems), worth $100.2M.

Question 2

How many shares of MPWR does Congress Asset Management own?

Accepted Answer

As of its Q3 2026 13F, Congress Asset Management holds 74,381 shares of MPWR (Monolithic Power Systems).

Question 3

What is Congress Asset Management's MPWR position worth?

Accepted Answer

As of its Q3 2026 13F, Congress Asset Management's MPWR position is worth $100.2M.

Question 4

Is Congress Asset Management buying or selling MPWR?

Accepted Answer

In Q3 2026, Congress Asset Management reduced its MPWR position by 6,044 shares (-7.5%).

Question 5

When did Congress Asset Management first buy MPWR?

Accepted Answer

Congress Asset Management already held MPWR in its Q1 2019 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q3 Latest	Decreased	74,381	-7.5%	$100.2M	0.6%	$1,347.22	0
2026-Q2	Decreased	80,425	-3.5%	$111.2M	0.7%	$1,380.32	0
2026-Q1	Decreased	83,343	-8.1%	$91.1M	0.7%	$1,090.07	0
2025-Q4	Decreased	90,686	-16.2%	$82.2M	0.6%	$901.84	0
2025-Q3	Decreased	108,271	-13.5%	$99.7M	0.7%	$914.50	0
2025-Q2	Increased	125,169	+2.0%	$91.5M	0.6%	$725.23	43
2025-Q1	Decreased	122,660	-6.2%	$71.1M	0.5%	$573.88	0
2024-Q4	Decreased	130,702	-9.4%	$77.3M	0.5%	$583.90	0
2024-Q3	Decreased	144,238	-40.7%	$133.3M	0.9%	$910.43	0