Monolithic Power Systems shares owned by William Blair $ Company
Quarter-by-quarter ownership of Monolithic Power Systems (MPWR) shares owned by William Blair $ Company
from 13F filings
Historical chart of William Blair $ Company investment in Monolithic Power Systems
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Quarterly reported holdings in Monolithic Power Systems by William Blair $ Company
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $9.4M | 10k | 920.67 |
| 2025-06-30 | $6.6M | 9.0k | 731.39 |
| 2025-03-31 | $5.5M | 9.5k | 579.97 |
| 2024-12-31 | $6.7M | 11k | 591.71 |
| 2024-09-30 | $8.9M | 9.6k | 924.49 |
| 2024-06-30 | $7.9M | 9.6k | 821.71 |
| 2024-03-31 | $6.4M | 9.5k | 677.39 |
| 2023-12-31 | $7.2M | 12k | 630.79 |
| 2023-09-30 | $5.3M | 12k | 462.00 |
| 2023-06-30 | $12M | 22k | 540.24 |
| 2023-03-31 | $12M | 23k | 500.54 |
| 2022-12-31 | $8.2M | 23k | 353.61 |
| 2022-09-30 | $7.2M | 20k | 363.39 |
| 2022-06-30 | $5.1M | 13k | 384.02 |
| 2022-03-31 | $5.0M | 10k | 485.63 |
| 2021-12-31 | $4.7M | 9.5k | 493.33 |
| 2021-09-30 | $3.4M | 7.0k | 484.75 |
| 2021-06-30 | $3.8M | 10k | 373.44 |
| 2021-03-31 | $3.7M | 11k | 353.20 |
| 2020-12-31 | $3.8M | 11k | 366.21 |
| 2020-09-30 | $2.9M | 10k | 279.64 |
| 2020-06-30 | $2.4M | 10k | 237.02 |
| 2020-03-31 | $1.7M | 10k | 167.47 |
| 2019-12-31 | $1.5M | 8.6k | 178.05 |
| 2019-09-30 | $1.3M | 8.4k | 155.57 |
| 2019-06-30 | $341k | 2.5k | 135.69 |
| 2019-03-31 | $521k | 3.8k | 135.61 |
| 2018-12-31 | $335k | 2.9k | 116.32 |
| 2018-09-30 | $432k | 3.4k | 125.65 |
| 2018-06-30 | $706k | 5.3k | 133.61 |
| 2018-03-31 | $768k | 6.6k | 115.77 |
| 2017-12-31 | $757k | 6.7k | 112.41 |
| 2017-09-30 | $723k | 6.8k | 106.57 |
| 2017-06-30 | $654k | 6.8k | 96.40 |
| 2017-03-31 | $586k | 6.6k | 88.55 |
| 2016-12-31 | $738k | 9.0k | 81.98 |
| 2016-09-30 | $903k | 11k | 80.52 |
| 2016-06-30 | $668k | 9.8k | 68.30 |
| 2016-03-31 | $622k | 9.8k | 63.59 |
| 2015-12-31 | $1.3M | 20k | 63.73 |
| 2015-09-30 | $1.4M | 27k | 51.19 |
| 2014-09-30 | $827k | 19k | 44.00 |
| 2014-06-30 | $1.9M | 44k | 42.34 |
| 2014-03-31 | $15M | 389k | 38.77 |
| 2013-09-30 | $10M | 334k | 30.28 |
| 2013-06-30 | $18M | 735k | 24.11 |
| 2013-03-31 | $4.3M | 175k | 24.37 |
| 2012-12-31 | $6.6M | 297k | 22.28 |
| 2012-09-30 | $6.2M | 313k | 19.75 |
| 2012-06-30 | $51M | 2.6M | 19.85 |
| 2011-12-31 | $56M | 3.7M | 15.07 |
| 2011-09-30 | $40M | 4.0M | 10.18 |
| 2011-03-31 | $50M | 3.5M | 14.19 |
| 2010-12-31 | $44M | 2.6M | 16.52 |