MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR)

Historical Holders from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
MPWR on Nasdaq
Shares outstanding
48,033,167
Price per share
$906.36
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
46,585,185
Total reported value
$42,862,632,532
% of total 13F portfolios
0.02%
Share change
-821,085
Value change
-$554,273,677
Avg buy value change
+0%
Avg sell value change
-0%
Number of holders
962
Price from insider filings
$930.86
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VANGUARD GROUP INC 12% $3,783,092,208 5,939,946 The Vanguard Group 30 Jun 2025
BlackRock, Inc. 10% +4% $4,440,605,266 +$203,578,448 4,899,383 +4.8% BlackRock, Inc. 31 Dec 2025
As of 30 Sep 2025, MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) has 962 institutional shareholders filing 13F forms. They hold 46,585,185 shares. of 48,033,167 outstanding shares (97%) .

Top 25 institutional shareholders own 66% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 13% 6,074,033 +2.3% 0.08% $5,591,997,740
BlackRock, Inc. 12% 5,726,774 +9.5% 0.09% $5,272,297,648
FMR LLC 7.4% 3,564,796 +5.1% 0.17% $3,281,894,553
STATE STREET CORP 4.4% 2,134,704 +0.69% 0.07% $1,968,577,775
PRICE T ROWE ASSOCIATES INC /MD/ 3.3% 1,573,798 -25% 0.16% $1,448,902,000
GEODE CAPITAL MANAGEMENT, LLC 2.8% 1,337,697 +1.5% 0.08% $1,226,828,661
Invesco Ltd. 2.4% 1,139,133 -2.3% 0.17% $1,048,731,183
FRANKLIN RESOURCES INC 2.2% 1,052,053 -3.3% 0.24% $968,562,111
JPMORGAN CHASE & CO 1.8% 863,228 +0.76% 0.05% $794,723,446
T. Rowe Price Investment Management, Inc. 1.6% 750,688 -19% 0.42% $691,114,000
VAN ECK ASSOCIATES CORP 1.5% 732,448 -23% 0.63% $674,321,000
BROWN ADVISORY INC 1.5% 730,119 -16% 0.88% $672,205,429
BANK OF AMERICA CORP /DE/ 1.5% 722,816 +4.3% 0.05% $665,453,225
MORGAN STANLEY 1.2% 558,671 -1.1% 0.03% $514,336,893
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1.2% 556,587 +15% 0.16% $512,416,256
UBS Group AG 1.1% 528,319 +5.1% 0.1% $486,391,604
FIL Ltd 1% 497,333 -4.9% 0.36% $457,864,653
NORTHERN TRUST CORP 1% 485,831 +0.78% 0.06% $447,275,451
WELLINGTON MANAGEMENT GROUP LLP 0.94% 452,938 -36% 0.07% $416,992,839
FIRST TRUST ADVISORS LP 0.93% 447,801 +66% 0.31% $412,263,380
GOLDMAN SACHS GROUP INC 0.9% 434,325 -15% 0.06% $399,856,964
Rafferty Asset Management, LLC 0.79% 379,318 -28% 1.1% $349,215,324
BARCLAYS PLC 0.75% 362,062 -17% 0.12% $333,328,760
Voya Investment Management LLC 0.75% 359,312 +57% 0.33% $330,796,999
Legal & General Group Plc 0.75% 358,429 +2.2% 0.07% $329,984,073

Institutional Holders of MONOLITHIC POWER SYSTEMS INC - Common Stock (MPWR) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (% of par) Investors
2025 Q4 446,134 $405,852,214 +$224,116,748 90,636.01% 37
2025 Q3 46,585,185 $42,862,632,532 -$554,273,677 92,064% 962
2025 Q2 47,319,591 $34,604,458,962 +$1,173,706,193 73,138% 896
2025 Q1 46,013,325 $26,672,987,854 -$283,589,996 57,998% 843
2024 Q4 46,451,845 $27,504,214,376 +$46,823,982 59,170% 836
2024 Q3 45,480,659 $42,027,965,618 -$1,106,533,472 92,450% 863
2024 Q2 46,859,172 $38,503,857,497 +$1,414,510,136 82,168% 824
2024 Q1 45,281,047 $30,663,645,141 -$232,290,495 67,742% 796
2023 Q4 479,794 $302,669,767 +$14,355,536 63,078.01% 9
2023 Q3 45,399,561 $20,973,006,617 -$481,783,052 46,200% 637
2023 Q2 45,733,530 $24,693,949,183 -$547,051,338 54,023% 632
2023 Q1 46,257,645 $23,145,393,953 -$170,880,626 50,054% 647
2022 Q4 46,384,024 $16,400,828,829 +$340,369,503 35,361% 585
2022 Q3 42,231,004 $15,353,719,296 +$556,114,659 36,339.96% 606
2022 Q2 43,564,468 $16,732,762,147 -$45,697,154 38,404.04% 599
2022 Q1 43,545,523 $21,117,839,817 +$110,154,148 48,568.03% 590
2021 Q4 43,521,252 $21,468,161,127 -$212,900,696 49,332.84% 604
2021 Q3 42,831,794 $20,757,449,297 +$258,440,831 48,467.97% 560
2021 Q2 43,007,683 $16,058,063,144 +$449,571,551 37,344.92% 517
2021 Q1 42,635,321 $15,056,401,519 +$23,941,874 35,320.92% 517
2020 Q4 41,109,347 $15,049,328,761 +$116,970,964 36,622.98% 494
2020 Q3 42,372,931 $11,845,671,776 -$109,575,101 27,961% 426
2020 Q2 42,097,764 $9,998,189,997 +$160,373,358 23,700% 393
2020 Q1 42,451,153 $7,109,677,721 +$35,100,569 16,746% 342
2019 Q4 41,831,742 $7,449,337,151 -$73,285,644 17,802.03% 344
2019 Q3 42,347,487 $6,590,896,132 +$53,024,385 15,563.06% 339
2019 Q2 42,036,963 $5,705,284,747 +$263,501,366 13,577.99% 337
2019 Q1 41,729,994 $5,654,897,343 -$85,836,897 13,548.97% 337
2018 Q4 42,298,224 $4,917,077,499 +$216,798,275 11,625% 329
2018 Q3 39,730,789 $4,987,637,685 +$69,666,241 12,552.98% 346
2018 Q2 39,787,627 $5,319,026,546 +$182,881,908 13,366.97% 336
2018 Q1 38,227,800 $4,425,752,311 +$110,082,997 11,577% 322
2017 Q4 37,561,636 $4,220,584,991 -$74,904,245 11,236% 315
2017 Q3 38,226,459 $4,073,391,379 +$2,019,668 10,654.96% 287
2017 Q2 38,078,249 $3,671,453,128 +$31,721,067 9,639.98% 278
2017 Q1 38,226,757 $3,520,665,362 +$255,083,134 9,209.92% 282
2016 Q4 39,229,112 $3,215,479,717 -$29,360,476 8,192.99% 261
2016 Q3 38,721,924 $3,115,946,431 +$168,614,611 8,049.97% 237
2016 Q2 39,459,706 $2,695,897,897 +$39,233,235 6,831.94% 207
2016 Q1 39,128,432 $2,486,871,966 +$100,509,139 6,363.99% 194
2015 Q4 37,558,191 $2,392,890,686 -$49,513,211 6,370.97% 189
2015 Q3 37,707,254 $1,930,146,416 +$65,971,346 5,120% 175
2015 Q2 36,617,889 $1,856,911,193 +$40,314,076 5,070.99% 174
2015 Q1 36,364,268 $1,913,867,117 -$13,426,466 5,265% 175
2014 Q4 36,129,575 $1,796,779,638 -$13,271,889 4,974.01% 167
2014 Q3 36,436,451 $1,605,085,627 -$2,273,307 4,404.99% 172
2014 Q2 37,063,802 $1,569,604,316 -$26,939,104 4,234.99% 157
2014 Q1 37,700,139 $1,461,102,651 +$22,824,586 3,877% 148