單晶片電力系統公司
US ˙ NasdaqGS ˙ US6098391054

SecurityMPWR / Monolithic Power Systems, Inc.
InstitutionNorges Bank
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Norges Bank closes position in MPWR / Monolithic Power Systems, Inc.

On May 11, 2026 - Norges Bank filed a 13F-HR form disclosing ownership of 0 shares of Monolithic Power Systems, Inc. (US:MPWR) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 726,705 shares of Monolithic Power Systems, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F MONOLITHIC PWR SYS COM 609839105 0 -726,705 -100.00 0 -100.00
2026-02-10 2025-12-31 13F MONOLITHIC PWR SYS COM 609839105 726,705 726,705 658,656 0.0705
2025-11-13 2025-09-30 13F MONOLITHIC PWR SYS COM 609839105 0 -598,887 -100.00 0 -100.00
2025-08-13 2025-06-30 13F MONOLITHIC PWR SYS COM 609839105 598,887 4,569 0.77 438,014 27.07 0.0547
2026-05-11 2025-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 594,318 -240,239 -28.79 344,693 -30.20 0.0484
2025-02-12 2024-12-31 13F MONOLITHIC PWR SYS COM 609839105 834,557 93,469 12.61 493,807 -27.93 0.0648
2025-11-12 2024-09-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 741,088 89,191 13.68 685,136 27.91 0.0957
2024-08-14 2024-06-30 13F MONOLITHIC PWR SYS COM 609839105 651,897 21,932 3.48 535,651 25.52 0.0800
2025-05-14 2024-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 629,965 55,316 9.63 426,751 17.73 0.0674
2024-02-09 2023-12-31 13F MONOLITHIC PWR SYS COM 609839105 574,649 77,500 15.59 362,477 57.82 0.0633
2024-11-13 2023-09-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 497,149 8,478 1.73 229,683 -13.00 0.0466
2024-08-14 2023-06-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 488,671 3,104 0.64 263,995 8.62 0.0521
2024-05-15 2023-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 485,567 60,712 14.29 243,046 61.78 0.0532
2023-02-14 2022-12-31 13F MONOLITHIC PWR SYS COM 609839105 424,855 27,034 6.80 150,233 3.92 0.0362
2023-11-13 2022-09-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 397,821 -19,870 -4.76 144,568 -9.88 0.0384
2023-08-14 2022-06-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 417,691 23,945 6.08 160,410 -16.12 0.0415
2023-05-12 2022-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 393,746 2,793 0.71 191,235 -0.85 0.0417
2022-03-09 2021-12-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 390,953 34,075 9.55 192,869 11.50 0.0397
2022-11-14 2021-09-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 356,878 -42,057 -10.54 172,972 16.10 0.0383
2022-08-15 2021-06-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 398,935 3,502 0.89 148,982 6.67 0.0323
2022-05-09 2021-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 395,433 -6,227 -1.55 139,671 -5.05 0.0320
2021-03-02 2020-12-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 401,660 -5,440 -1.34 147,100 29.23 0.0343
2021-11-12 2020-09-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 407,100 -34,997 -7.92 113,829 8.64 0.0302
2021-08-13 2020-06-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 442,097 29,284 7.09 104,777 51.57 0.0302
2021-05-07 2020-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 412,813 0 0.00 69,130 -5.93 0.0246
2020-03-03 2019-12-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 412,813 0 0.00 73,489 14.39 0.0205
2020-11-13 2019-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 412,813 0 0.00 64,246 14.62 0.0197
2020-08-13 2019-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 412,813 13,575 3.40 56,052 3.62 0.0173
2020-05-11 2019-03-31 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 399,238 24,307 6.48 54,094 24.11 0.0175
2019-03-04 2018-12-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 374,931 8,568 2.34 43,585 -5.23 0.0162
2019-12-02 2018-09-30 13F/A-3 MONOLITHIC POWER SYSTEMS COM 609839105 366,363 15,059 4.29 45,990 -2.06 0.0149
2019-12-02 2018-09-30 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 366,363 15,059 45,990 0.0149
2019-11-12 2018-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 366,363 15,059 45,990 0.0149
2019-08-12 2018-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 351,304 7,190 2.09 46,958 17.87 0.0161
2019-05-15 2018-03-31 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 344,114 16,334 4.98 39,838 8.17 0.0144
2018-03-05 2017-12-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 327,780 -4,570 -1.38 36,830 4.00 0.0132
2018-11-13 2017-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 332,350 19,264 6.15 35,412 17.33 0.0134
2018-07-24 2017-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 313,086 30,899 10.95 30,181 16.13 0.0120
2018-05-11 2017-03-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 282,187 21,816 8.38 25,989 21.83 0.0107
2017-03-02 2016-12-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 260,371 0 0.00 21,332 6.56 0.0093
2017-11-13 2016-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 260,371 -10,203 -3.77 20,019 8.29 0.0095
2017-08-09 2016-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 270,574 -22,200 -7.58 18,486 -0.78 0.0088
2017-05-10 2016-03-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 292,774 -14,526 -4.73 18,632 -4.83 0.0092
2016-04-18 2015-12-31 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 307,300 0 0.00 19,578 24.43 0.0097
2016-03-16 2015-12-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 307,300 0 19,578 0.0098
2016-11-14 2015-09-30 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 307,300 0 0.00 15,734 0.97 0.0082
2016-08-12 2015-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 307,300 -62 -0.02 15,583 -3.71 0.0078
2016-05-13 2015-03-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 307,362 -63,907 -17.21 16,183 -12.37 0.0079
2015-03-19 2014-12-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 371,269 48,589 18,467 0.0094
2016-04-18 2014-12-31 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 371,269 48,589 15.06 18,467 29.92 0.0094
2015-11-12 2014-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 0.00 14,214 4.01 0.0077
2015-08-10 2014-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 0.00 13,666 9.24 0.0074
2015-05-12 2014-03-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 0.00 12,510 11.86 0.0071
2014-03-07 2013-12-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 11,184 0.0068
2014-03-20 2013-12-31 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 11,184 0.0066
2014-05-12 2013-12-31 13F/A-3 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 0.00 11,184 14.46 0.0064
2014-11-14 2013-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 0 0.00 9,771 25.59 0.0057
2014-08-14 2013-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 322,680 41,254 14.66 7,780 13.44 0.0048
2014-04-04 2013-03-31 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 281,426 0 6,858 0.0045
2014-05-12 2013-03-31 13F/A-2 MONOLITHIC POWER SYSTEMS COM 609839105 281,426 0 0.00 6,858 23.37 0.0044
2013-11-14 2012-09-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 281,426 50,403 21.82 5,559 24.17 0.0037
2013-08-15 2012-06-30 13F/A-1 MONOLITHIC POWER SYSTEMS COM 609839105 231,023 231,023 4,477 0.0036
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.