PQUS0.410%
as of Oct 23
MPWR
GrowthMONOLITHIC POWER SYSTEMS INC
Monolithic Power Systems, Inc. provides semiconductor-based power electronics solutions in China, Taiwan, South Korea, Southeast Asia, Europe, the United States, Japan, and internationally. The company offers direct current (DC) to DC solutions to convert and control voltages within a range of electronic systems, such as cloud-based and on-premises CPU servers and workstations, AI systems, memory, storage solutions, notebooks, infotainment, power sources, home appliances, network infrastructure, and satellite communications. It also provides alternating current (AC) to DC; driver metal-oxide-semiconductor field-effect transistors; power management integrated circuits (ICs); and current limit switch and lighting control products.
Close · 3M
-31.00%
Held by 3 AI ETFs
Signal performance
Each tracked ETF's moves on this stock, grouped by fund. Returns are measured from the signal date to the latest close — hypothetical, no commissions or slippage.
Buy signals10
Win rate0% (0/10)
Avg buy return-16.61%
PQUS · Weight increase · 2d
weight 0.430% → 0.450% (+0.020 pp)·stock down 7.0% in the 30 days before
Oct 21·entry $1283.32·now $1140.12Fresh
-11.16%
since Oct 21
PQUS · Weight decrease · 3d
weight 0.520% → 0.480% (-0.040 pp)·stock up 13.8% in the 30 days before
Oct 8·entry $1369.80·now $1140.12
-16.77%
since Oct 8
PQUS · Weight decrease · 2d
weight 0.520% → 0.500% (-0.020 pp)·stock up 17.0% in the 30 days before
Oct 7·entry $1425.98·now $1140.12
-20.05%
since Oct 7
PQUS · Weight decrease · 2d
weight 0.560% → 0.520% (-0.040 pp)·stock up 7.4% in the 30 days before
Aug 15·entry $1415.99·now $1140.12
-19.48%
since Aug 15
PQUS · Weight decrease · 2d
weight 0.640% → 0.540% (-0.100 pp)·stock up 2.0% in the 30 days before
Aug 7·entry $1401.54·now $1140.12
-18.65%
since Aug 7
PQUS · Weight increase · 2d
weight 0.580% → 0.640% (+0.060 pp)·stock up 7.1% in the 30 days before
Aug 2·entry $1344.37·now $1140.12Fresh
-15.19%
since Aug 2
PQUS · Accumulation · 5d
weight 0.580% → 0.630% (+0.050 pp)·stock down 7.0% in the 30 days before
Jul 25·entry $1339.08·now $1140.12Fresh
-14.86%
since Jul 25
PQUS · Weight increase · 3d
weight 0.590% → 0.620% (+0.030 pp)·stock down 7.0% in the 30 days before
Jul 24·entry $1333.81·now $1140.12Fresh
-14.52%
since Jul 24
PQUS · Weight increase · 2d
weight 0.590% → 0.610% (+0.020 pp)·stock down 1.9% in the 30 days before
Jul 23·entry $1397.15·now $1140.12Fresh
-18.40%
since Jul 23
PQUS · Weight increase · 2d
weight 0.560% → 0.600% (+0.040 pp)·stock down 12.5% in the 30 days before
Jul 17·entry $1312.00·now $1140.12Fresh
-13.10%
since Jul 17
PQUS · Weight increase · 2d
weight 0.600% → 0.630% (+0.030 pp)·stock down 20.7% in the 30 days before
Jul 2·entry $1288.16·now $1140.12Fresh
-11.49%
since Jul 2
-20.73%
since Jun 25
-25.86%
since Jun 19
-27.72%
since Jun 12
-26.88%
since Jun 7
-26.97%
since May 21
AIEQ · New entry · 1d
weight 0 → 0.050% (new)·stock up 11.0% in the 30 days before
Oct 1·entry $1360.97·now $1140.12Fresh
-16.23%
since Oct 1
AMOM · Weight decrease · 2d
weight 0.480% → 0.010% (-0.470 pp)·stock down 8.7% in the 30 days before
Sep 2·entry $1219.36·now $1140.12
-6.50%
since Sep 2
AMOM · Weight decrease · 2d
weight 0.510% → 0.480% (-0.030 pp)·stock down 6.0% in the 30 days before
Aug 19·entry $1300.14·now $1140.12
-12.31%
since Aug 19
AMOM · Weight decrease · 2d
weight 0.530% → 0.500% (-0.030 pp)·stock up 0.7% in the 30 days before
Aug 13·entry $1362.55·now $1140.12
-16.32%
since Aug 13
AMOM · Weight increase · 2d
weight 0.030% → 0.530% (+0.500 pp)·stock up 2.0% in the 30 days before
Aug 7·entry $1401.54·now $1140.12Fresh
-18.65%
since Aug 7
AMOM · Sudden change · 1d
weight 0.030% → 0.520% (+0.490 pp)·stock up 3.3% in the 30 days before
Aug 6·entry $1359.08·now $1140.12
-16.11%
since Aug 6
AMOM · Weight decrease · 2d
weight 0.280% → 0.250% (-0.030 pp)·stock down 18.9% in the 30 days before
Jun 26·entry $1313.32·now $1140.12
-13.19%
since Jun 26
-19.92%
since Jun 23
-21.27%
since Jun 17
AMOM · Weight increase · 2d
stock up 7.4% in the 30 days before
Jun 3·entry $1689.89·now $1140.12Fresh
-32.53%
since Jun 3
-29.84%
since Jun 2
Sell signals show what the stock did after the AI exited. A negative number means the AI's exit was well-timed.
Buffett-style framework
Too hard to callas of Aug 16
AI ETFs show mixed activity for MONOLITHIC POWER SYSTEMS, with some funds demonstrating both increase and decrease trends in their holdings recently. The framework's 'Too Hard' verdict, however, indicates that the company's long-term predictability is questionable, suggesting that active positions by AI funds carry a higher inherent risk from this value-investing perspective.
- Circle of CompetenceThe semiconductor industry, characterized by rapid technological cycles and intense competition, makes projecting stable unit economics and cash flows for ten years inherently difficult.
- Economic MoatThis stage is not applicable as the company falls outside the circle of competence.
- ManagementThis stage is not applicable as the company falls outside the circle of competence.
- Financial HealthThis stage is not applicable as the company falls outside the circle of competence.
- Margin of SafetyThis stage is not applicable as the company falls outside the circle of competence.
MONOLITHIC POWER SYSTEMS operates in the semiconductor industry, a sector prone to rapid technological change and competitive shifts that hinder the reliable projection of unit economics and cash flows for a decade. Consequently, the business is deemed 'Too Hard' to evaluate within this framework, precluding any meaningful assessment of its economic moat, management quality, financial health, or margin of safety. Without predictable earning power, a confident investment decision cannot be made using this analytical approach.
Educational interpretation generated by AI applying frameworks Warren Buffett documented in his shareholder letters and other public writings. Not a statement by Mr. Buffett or Berkshire Hathaway, and not investment advice.