Yorktown Management & Research Company’s Monolithic Power Systems MPWR Stock Holding History

Yorktown Management & Research Company’s Portfolio MPWR Stock Details MPWR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$899K	Hold	650	–	–	0.55%	48
2026 Q1	$711K	Hold	650	–	–	0.59%	42
2025 Q4	$589K	Hold	650	–	–	0.47%	68
2025 Q3	$598K	Hold	650	–	–	0.48%	63
2025 Q2	$475K	Hold	650	–	–	0.45%	82
2025 Q1	$377K	Hold	650	–	–	0.41%	107
2024 Q4	$385K	Hold	650	–	–	0.37%	128
2024 Q3	$601K	Hold	650	–	–	0.62%	51
2024 Q2	$534K	Hold	650	–	–	0.57%	52
2024 Q1	$440K	Hold	650	–	–	0.42%	86
2023 Q4	$410K	Hold	650	–	–	0.43%	91
2023 Q3	$300K	Sell	650 -650	-50%	-$332K	0.34%	141
2023 Q2	$702K	Hold	1,300	–	–	0.76%	26
2023 Q1	$651K	Hold	1,300	–	–	0.7%	35
2022 Q4	$460K	Hold	1,300	–	–	0.56%	60
2022 Q3	$472K	Hold	1,300	–	–	0.61%	55
2022 Q2	$499K	Hold	1,300	–	–	0.64%	48
2022 Q1	$631K	Hold	1,300	–	–	0.54%	53
2021 Q4	$641K	Hold	1,300	–	–	0.43%	74
2021 Q3	$630K	Hold	1,300	–	–	0.47%	59
2021 Q2	$485K	Sell	1,300 -1,700	-57%	-$598K	0.38%	103
2021 Q1	$1.06M	Hold	3,000	–	–	0.88%	19
2020 Q4	$1.1M	Hold	3,000	–	–	0.99%	15
2020 Q3	$839K	Hold	3,000	–	–	0.78%	16
2020 Q2	$711K	Sell	3,000 -1,700	-36%	-$344K	0.64%	16
2020 Q1	$787K	Buy	4,700 +2,300	+96%	+$394K	0.8%	14
2019 Q4	$427K	Buy	+2,400	New	+$383K	0.23%	140

Other funds holding MPWR

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Yorktown Management & Research Company's MPWR Position: Q2 2026 in Review

Yorktown Management & Research Company held its Monolithic Power Systems (MPWR) position steady in Q2 2026 at 650 shares worth $899K. The position accounts for 0.55% of the portfolio, ranked #48.

Yorktown Management & Research Company first reported a position in MPWR in Q4 2019 and has held it in 27 quarters since. The position peaked at $1.1M in Q4 2020. 1,246 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

Yorktown Management & Research Company held 650 shares of Monolithic Power Systems worth $899K as of Q2 2026.
Yorktown Management & Research Company left its Monolithic Power Systems share count unchanged in Q2 2026.
Monolithic Power Systems made up 0.55% of Yorktown Management & Research Company's portfolio in Q2 2026, its #48 holding.
Yorktown Management & Research Company first reported a position in Monolithic Power Systems in Q4 2019 and has held it in 27 quarters since.
Yorktown Management & Research Company's Monolithic Power Systems position peaked at $1.1M in Q4 2020.
1,246 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Yorktown Management & Research Company's 13F filing for Q2 2026, filed 23 Jul 2026.