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Livermore
Livermore
ZHEN

Janus Henderson Group PLC

SEC CIK
0001274173
Latest filing
May 18, 2026

MPWR holding history

Monolithic Power Systems, Inc. in every 13F filed by Janus Henderson Group PLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MPWR overviewAll 13F holders of MPWRFull Q1 2026 holdings

Shares (Q1 2026)
7,374
Value
$8.06M
% of portfolio
<0.1%
Quarters held
20
Since Q1 2021
Holdings of MPWR by Janus Henderson Group PLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q1 20267,374$8.06M<0.1%+128+1.8%AddedHolders
Q4 20257,246$6.57M<0.1%−120,492−94.3%ReducedHolders
Q3 2025127,738$117.5M0.1%+309+0.2%AddedHolders
Q2 2025127,429$93.2M<0.1%+21,816+20.7%AddedHolders
Q1 2025105,613$61.3M<0.1%+99,668+1,676.5%AddedHolders
Q4 20245,945$3.52M<0.1%−51−0.9%ReducedHolders
Q3 20245,996$5.55M<0.1%+2,134+55.3%AddedHolders
Q2 20243,862$3.17M<0.1%−1,137−22.7%ReducedHolders
Q1 20244,999$3.38M<0.1%+20.0%AddedHolders
Q4 20234,997$3.15M<0.1%−36−0.7%ReducedHolders
Q3 20235,033$2.33M<0.1%−186−3.6%ReducedHolders
Q2 20235,219$2.82M<0.1%−558−9.7%ReducedHolders
Q1 20235,777$2.89M<0.1%+1,167+25.3%AddedHolders
Q4 20224,610$1.63M<0.1%+4,610NewHolders
Q3 20220$00.0%−4,605−100.0%Sold outHolders
Q2 20224,605$1.77M<0.1%−641−12.2%ReducedHolders
Q1 20225,246$2.55M<0.1%+1,245+31.1%AddedHolders
Q4 20214,001$1.98M<0.1%+182+4.8%AddedHolders
Q3 20213,819$1.85M<0.1%−159−4.0%ReducedHolders
Q2 20213,978$1.49M<0.1%+44+1.1%AddedHolders
Q1 20213,934$1.39M<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.