Robeco Schweiz AG’s Monolithic Pwr Sys Inc Position
Does Robeco Schweiz AG own Monolithic Pwr Sys Inc (MPWR)? Yes — 95.0K shares worth $104M (+2.20% of its 13F portfolio) as of Q1 2026, down from 95.0K shares the prior filed quarter.
Position Value
$104M
Q1 2026
Shares
95.0K
% of Portfolio
+2.20%
Quarters Held
30
currently held
Position History MPWR
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 95.0K | $104M | +2.20% |
| Q4 2025 | 95.0K | $86M | +1.93% |
| Q3 2025 | 103.2K | $95M | +2.14% |
| Q2 2025 | 106.7K | $78M | +1.80% |
| Q1 2025 | 116.0K | $67M | +1.66% |
| Q4 2024 | 110.2K | $65M | +1.39% |
| Q3 2024 | 139.8K | $129M | +2.42% |
| Q2 2024 | 142.2K | $117M | +2.24% |
| Q1 2024 | 225.9K | $153M | +2.67% |
| Q4 2023 | 250.4K | $158M | +2.65% |
| Q3 2023 | 244.2K | $113M | +1.91% |
| Q2 2023 | 248.8K | $134M | +2.00% |
| Q1 2023 | 238.7K | $119M | +1.93% |
| Q4 2022 | 241.4K | $85M | +1.56% |
| Q3 2022 | 241.5K | $88M | +1.71% |
| Q2 2022 | 235.4K | $90M | +1.61% |
| Q1 2022 | 235.4K | $114M | +1.61% |
| Q4 2021 | 152.7K | $75M | +0.98% |
| Q3 2021 | 160.9K | $78M | +0.91% |
| Q2 2021 | 266.0K | $99M | +1.38% |
| Q1 2021 | 291.5K | $103M | +1.57% |
| Q4 2020 | 201.0K | $74M | +1.58% |
| Q3 2020 | 201.5K | $56M | +1.67% |
| Q2 2020 | 311.0K | $74M | +2.65% |
| Q1 2020 | 295.0K | $49M | +2.09% |
| Q4 2019 | 221.0K | $39M | +1.47% |
| Q3 2019 | 132.0K | $21M | +0.89% |
| Q2 2019 | 163.0K | $22M | +0.92% |
| Q1 2019 | 294.0K | $40M | +1.65% |
| Q4 2018 | 667.0K | $77M | +3.55% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Robeco Schweiz AG’s full portfolio or all institutional holders of MPWR.