SEC 13F Intelligence

Frontier Capital Management Co LLC / MPWR

Frontier Capital Management Co LLC’s Monolithic Pwr Sys Inc Position

Does Frontier Capital Management Co LLC own Monolithic Pwr Sys Inc (MPWR)? Yes — 79.7K shares worth $87M (+0.90% of its 13F portfolio) as of Q1 2026, down from 84.1K shares the prior filed quarter.

Position Value
$87M
Q1 2026
Shares
79.7K
% of Portfolio
+0.90%
Quarters Held
30
currently held

Position History MPWR

Reported value by quarter
Q4 ’18: $95MQ4 ’18Q1 ’19: $115MQ2 ’19: $97MQ3 ’19: $109MQ4 ’19: $105MQ4 ’19Q1 ’20: $77MQ2 ’20: $86MQ3 ’20: $74MQ4 ’20: $19MQ4 ’20Q1 ’21: $13MQ2 ’21: $16MQ3 ’21: $13MQ4 ’21: $11MQ4 ’21Q1 ’22: $11MQ2 ’22: $39MQ3 ’22: $36MQ4 ’22: $49MQ4 ’22Q1 ’23: $71MQ2 ’23: $124MQ3 ’23: $84MQ4 ’23: $124MQ4 ’23Q1 ’24: $92MQ2 ’24: $105MQ3 ’24: $132MQ4 ’24: $88MQ4 ’24Q1 ’25: $75MQ2 ’25: $97MQ3 ’25: $151MQ4 ’25: $76MQ4 ’25Q1 ’26: $87Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 202679.7K$87M+0.90%
Q4 202584.1K$76M+0.81%
Q3 2025163.9K$151M+1.35%
Q2 2025132.8K$97M+0.90%
Q1 2025128.7K$75M+0.82%
Q4 2024149.5K$88M+0.84%
Q3 2024142.7K$132M+1.24%
Q2 2024127.4K$105M+1.04%
Q1 2024136.1K$92M+0.86%
Q4 2023196.0K$124M+1.25%
Q3 2023180.8K$84M+0.92%
Q2 2023228.6K$124M+1.18%
Q1 2023142.0K$71M+0.73%
Q4 2022137.8K$49M+0.53%
Q3 202298.6K$36M+0.42%
Q2 2022102.2K$39M+0.45%
Q1 202222.5K$11M+0.10%
Q4 202122.6K$11M+0.09%
Q3 202127.8K$13M+0.11%
Q2 202141.6K$16M+0.11%
Q1 202135.7K$13M+0.10%
Q4 202052.5K$19M+0.14%
Q3 2020265.4K$74M+0.65%
Q2 2020362.5K$86M+0.76%
Q1 2020457.0K$77M+0.86%
Q4 2019590.0K$105M+0.78%
Q3 2019701.7K$109M+0.86%
Q2 2019711.5K$97M+0.73%
Q1 2019845.1K$115M+0.81%
Q4 2018816.2K$95M+0.77%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Frontier Capital Management Co LLC’s full portfolio or all institutional holders of MPWR.