MPWR
Monolithic Power (MPWR)
NASDAQ
$1,444.46+$83.49 (+6.13%)
Price as of Oct 02, 2026 3:10 PM EDT
  • $66.9B
    Market Cap
  • 47.24%
    1-Year Change
  • Semiconductors
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
LOMBARD ODIER ASSET MANAGEMENT (EUROPE) LTD
46.19%
22.7M
+22.7M (+99.94%)
Sep 30, 2025
VANGUARD GROUP INC
12.28%
6.0M
-39,639 (-0.66%)
Dec 31, 2025
BLACKROCK INC.
12.02%
5.9M
+542,434 (+9.18%)
Jun 30, 2024
BLACKROCK, INC.
11.38%
5.6M
-482,542 (-8.63%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
11.04%
5.4M
-381,736 (-7.04%)
Dec 31, 2024
FMR LLC
10.54%
5.2M
+776,427 (+15.00%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
6.36%
3.1M
+43,307 (+1.39%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions902.7M (74.57%)
  • Mutual Funds303.5M (25.07%)
  • Insiders4.3M (0.35%)
  • Other0 (0.00%)

Insider Transactions

  • 0.35% (4.3M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 8
    Number of InsiderSelling (last 12 months)
  • $83.2B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Hsing Michael
CEO
Sell
Sep 28, 2026
$788,692.76
596
$1,323.31
847,668
Hsing Michael
CEO
Sell
Sep 28, 2026
$2.8M
2,121
$1,328.54
845,547
Hsing Michael
CEO
Sell
Sep 28, 2026
$1.5M
1,111
$1,333.34
844,436
Hsing Michael
CEO
Sell
Sep 28, 2026
$3.9M
2,949
$1,338.66
841,487
Hsing Michael
CEO
Sell
Sep 28, 2026
$7.8M
5,783
$1,343.76
835,704
Hsing Michael
CEO
Sell
Sep 28, 2026
$8.5M
6,343
$1,347.15
829,361
Hsing Michael
CEO
Sell
Sep 28, 2026
$14.8M
10,967
$1,351.43
818,394
Hsing Michael
CEO
Sell
Sep 28, 2026
$176,402.20
130
$1,356.94
818,264
CHANG KUO WEI HERBERT
Sell
Aug 24, 2026
$64,078.50
50
$1,281.57
515
CHANG KUO WEI HERBERT
Sell
Aug 11, 2026
$71,000.00
50
$1,420.00
565
DEAN ROBERT W II
Interim CFO
Sell
Aug 05, 2026
$141,148.35
105
$1,344.27
7,132
Sciammas Maurice
EVP, WW Sales & Marketing
Gift
Aug 04, 2026
$0.00
25,000
$0.00
126,644
Sciammas Maurice
EVP, WW Sales & Marketing
Gift
Aug 04, 2026
$0.00
25,000
$0.00
36,062
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Aug 03, 2026
$40,318.20
30
$1,343.94
1,119
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$692,493.81
527
$1,314.03
166,117
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$361,247.08
274
$1,318.42
165,843
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$541,487.37
409
$1,323.93
165,434
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$616,795.20
464
$1,329.30
164,970
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$1.0M
776
$1,334.59
164,194
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$2.0M
1,460
$1,339.59
162,734
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$2.5M
1,864
$1,344.16
160,870
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$2.0M
1,506
$1,348.91
159,364
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$7.6M
5,640
$1,352.95
153,724
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$67,968.00
50
$1,359.36
153,674
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$328,603.20
240
$1,369.18
153,434
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$649,221.84
472
$1,375.47
152,962
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$576,309.14
418
$1,378.73
152,544
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$567,485.10
410
$1,384.11
152,134
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$69,409.50
50
$1,388.19
152,084
Sciammas Maurice
EVP, WW Sales & Marketing
Sell
Jul 15, 2026
$297,382.08
213
$1,396.16
151,871