Cliff Asness's MPWR Position Overview
Cliff Asness (via Aqr Capital Management LLC) currently holds 46,278 shares of Monolithic Power Systems, Inc. (MPWR) worth $41.95 M, representing 0.02% of the portfolio. First purchased in 2012-Q4, this long-term strategic position has been held for 53 quarters.
Based on 13F filings since 2013, Cliff Asness has maintained a long-term strategic position in MPWR, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2021, adding 66,988 shares. Largest reduction occurred in Q4 2022, reducing 44,067 shares.
Analysis based on 13F filings available since 2013 Q2
Cliff Asness's Monolithic Power Systems (MPWR) Holding Value Over Time
Track share changes against reported price movement
Quarterly Monolithic Power Systems (MPWR) Trades by Cliff Asness
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +8,573 | Add 22.74% | 46,278 | $906.37 |
| Q3 2025 | -3,739 | Reduce 9.02% | 37,705 | $913.02 |
| Q2 2025 | -31,793 | Reduce 43.41% | 41,444 | $731.38 |
| Q1 2025 | -15,396 | Reduce 17.37% | 73,237 | $564.72 |
| Q4 2024 | +7,911 | Add 9.80% | 88,633 | $591.70 |
| Q3 2024 | -3,638 | Reduce 4.31% | 80,722 | $924.50 |
| Q2 2024 | +22,699 | Add 36.81% | 84,360 | $821.68 |
| Q1 2024 | +18,463 | Add 42.74% | 61,661 | $676.32 |
| Q4 2023 | +15,348 | Add 55.11% | 43,198 | $630.78 |
| Q3 2023 | -1,649 | Reduce 5.59% | 27,850 | $462.00 |
| Q2 2023 | +16,207 | Add 121.93% | 29,499 | $539.64 |
| Q1 2023 | -18,829 | Reduce 58.62% | 13,292 | $496.99 |
| Q4 2022 | -44,067 | Reduce 57.84% | 32,121 | $347.77 |
| Q3 2022 | +6,249 | Add 8.93% | 76,188 | $363.40 |
| Q2 2022 | -32,527 | Reduce 31.74% | 69,939 | $382.95 |
| Q1 2022 | -31,148 | Reduce 23.31% | 102,466 | $485.68 |
| Q4 2021 | +29,077 | Add 27.82% | 133,614 | $493.33 |
| Q3 2021 | +6,052 | Add 6.15% | 104,537 | $484.68 |
| Q2 2021 | -22,807 | Reduce 18.80% | 98,485 | $373.45 |
| Q1 2021 | +66,988 | Add 123.36% | 121,292 | $352.58 |
| Q4 2020 | +12,268 | Add 29.18% | 54,304 | $363.18 |
| Q3 2020 | +9,859 | Add 30.64% | 42,036 | $277.24 |
| Q2 2020 | -10,933 | Reduce 25.36% | 32,177 | $234.30 |
| Q1 2020 | +18,464 | Add 74.92% | 43,110 | $167.46 |
| Q4 2019 | +3,680 | Add 17.55% | 24,646 | $178.00 |
| Q3 2019 | -17,458 | Reduce 45.44% | 20,966 | $155.63 |
| Q2 2019 | +33,002 | Add 608.67% | 38,424 | $133.15 |
| Q1 2019 | +696 | Add 14.73% | 5,422 | $134.64 |
| Q4 2018 | -1,938 | Reduce 29.08% | 4,726 | $116.17 |
| Q3 2018 | -3,590 | Reduce 35.01% | 6,664 | $125.60 |
| Q2 2018 | -10,591 | Reduce 50.81% | 10,254 | $133.70 |
| Q1 2018 | +1,410 | Add 7.25% | 20,845 | $115.76 |
| Q4 2017 | -1,926 | Reduce 9.02% | 19,435 | $112.37 |
| Q3 2017 | +376 | Add 1.79% | 21,361 | $106.55 |
| Q1 2017 | -14,239 | Reduce 40.42% | 20,985 | $92.11 |
| Q4 2016 | -812 | Reduce 2.25% | 35,224 | $81.93 |
| Q3 2016 | +14,630 | Add 68.35% | 36,036 | $80.50 |
| Q1 2016 | +73 | Add 0.34% | 21,406 | $63.63 |
| Q4 2015 | -2,943 | Reduce 12.12% | 21,333 | $63.70 |
| Q3 2015 | -5,843 | Reduce 19.40% | 24,276 | $51.20 |
| Q2 2015 | -223 | Reduce 0.73% | 30,119 | $50.70 |
| Q1 2015 | +3,699 | Add 13.88% | 30,342 | $52.67 |
| Q4 2014 | -1,900 | Reduce 6.66% | 26,643 | $49.73 |
| Q3 2014 | +7,500 | Add 35.64% | 28,543 | $44.04 |
| Q1 2014 | -4,200 | Reduce 16.64% | 21,043 | $38.78 |
| Q4 2013 | +267 | Add 1.07% | 25,243 | $34.66 |
| Q2 2013 | +24,976 | Add 0.00% | 24,976 | $24.10 |
| Q4 2012 | +16,200 | Add 0.00% | 16,200 | $22.28 |
Cliff Asness's Monolithic Power Systems Investment FAQs
Cliff Asness first purchased Monolithic Power Systems, Inc. (MPWR) in Q4 2012, acquiring 16,200 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Cliff Asness has held Monolithic Power Systems, Inc. (MPWR) for 53 quarters since Q4 2012.
Cliff Asness's largest addition to Monolithic Power Systems, Inc. (MPWR) was in Q1 2021, adding 121,292 shares worth $42.76 M.
According to the latest 13F filing for Q4 2025, Cliff Asness's firm, Aqr Capital Management LLC, owns 46,278 shares of Monolithic Power Systems, Inc. (MPWR), valued at approximately $41.95 M.
As of the Q4 2025 filing, Monolithic Power Systems, Inc. (MPWR) represents approximately 0.02% of Cliff Asness's publicly disclosed stock portfolio, making it one of their key holdings.
Cliff Asness's peak holding in Monolithic Power Systems, Inc. (MPWR) was 133,614 shares, as reported at the end of Q4 2021.