Monolithic Power Systems (MPWR) insider trades, Congress trades and 13F ownership

OQRO

Monolithic Power Systems (MPWR) insider trades, Congress trades and 13F ownership | OQRO

Who owns it (13F)

As of Jun 30, 2026

Institutions reporting a stake, Q2 2026

1,238

+118 vs Q1 2026

Share of stock reported

96.9%

47.6M of 49.1M shares outstanding

Change vs Q1 2026

-386K shares

202 new positions, 77 positions closed

Reported in 13F filings, which cover managers over $100M and include double counting. A 13F shows holdings on the last day of the quarter, not when shares were bought or sold. Change counts the 1,221 managers that reported both quarters.

Largest reported holders, Q2 2026

1BlackRock, Inc. Trimmed (-483K shares)5.59M sh · $7.73B11.8% of reported
2Fmr Llc Added (+776K shares)5.18M sh · $7.16B10.9% of reported
3Vanguard Capital Management Llc Added (+43K shares)3.13M sh · $4.32B6.6% of reported
4Vanguard Portfolio Management Llc About the same2.5M sh · $3.46B5.3% of reported
5Invesco Ltd. Trimmed (-172K shares)2.34M sh · $3.24B4.9% of reported
6State Street Corp Added (+94K shares)2.28M sh · $3.16B4.8% of reported
7Geode Capital Management, Llc Trimmed (-237K shares)1.2M sh · $1.65B2.5% of reported
8Price T Rowe Associates Inc /Md/ Trimmed (-286K shares)977K sh · $1.35B2.1% of reported
9Franklin Resources Inc Trimmed (-117K shares)812K sh · $1.12B1.7% of reported
10Goldman Sachs Group Inc Added (+213K shares)781K sh · $1.08B1.6% of reported
11Norges Bank No comparable report last quarter751K sh · $1.04B1.6% of reported
12Van Eck Associates Corp Added (+222K shares)746K sh · $1.03B1.6% of reported
13Morgan Stanley Added (+72K shares)728K sh · $1.01B1.5% of reported
14Bank Of America Corp /De/ Added (+154K shares)536K sh · $741M1.1% of reported
15Royal Bank Of Canada Added (+14K shares)487K sh · $674M1.0% of reported
16First Trust Advisors Lp Trimmed (-109K shares)483K sh · $667M1.0% of reported
17Northern Trust Corp Trimmed (-9,628 shares)479K sh · $663M1.0% of reported
18Barclays Plc Trimmed (-82K shares)474K sh · $655M1.0% of reported
19Rafferty Asset Management, LLC Added (+142K shares)459K sh · $635M1.0% of reported
20UBS Group AG Trimmed (-91K shares)449K sh · $621M0.9% of reported

Source: SEC Form 13F data sets, every filer, common stock only (options and bonds left out); 21 managers also reported puts and 20 managers calls. Amendments are applied; lines whose value was filed in thousands are scaled, and lines whose shares and value disagree are left out.

Monolithic Power Systems

Most active this month

Fund holdings · 1

3,096Shares reported · -8,846 vs prior quarter

Who owns it (13F)

Largest reported holders, Q2 2026