Monolithic Power Systems

MPWR • NASDAQ

Monolithic Power Systems is a semiconductors company in the technology sector on NASDAQ, led by Michael Hsing, with a market cap of $45.3B. As of Q3 2025, 97% of shares are held by 945 institutional investors, with VANGUARD GROUP INC as the largest holder at 12.68%.

CEOMichael Hsing

Market Cap$45.3B

Semiconductors

Technology

Employees3.6K

Websitemonolithicpower.com

Country

United States of America

Overview

Overview of institutional ownership in MPWR as of Q3 2025 with a market cap of $44.1B

All Institutions

Institutions: 945
Value Held: $42.7B
Shares Held: 46.6M
Avg Position: $45.2M
Median Position: $1.1M

Hedge Funds

Hedge Funds: 45
Value Held: $803.3M
Shares Held: 872.9K
Avg Position: $17.9M
Median Position: $2.4M

Ownership Breakdown

Institutional (non-HF)

95.08%

$41.9B

Hedge Funds

1.82%

$803.3M

Retail & Other

3.1%

$1.4B

Based on market cap of $44.1B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in MPWR as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$5.6B 0.08% of portfolio	12.68% 6.1M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
B BlackRock, Inc. Institution	-	$5.3B 0.09% of portfolio	11.96% 5.7M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
FMR LLC Institution	-	$3.3B 0.17% of portfolio	7.44% 3.6M shares	≤ Q2 2013 Held for 12y 5m+	$1.92T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$2.0B 0.07% of portfolio	4.46% 2.1M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	Robert W Sharps President	$1.4B 0.16% of portfolio	3.29% 1.6M shares	≤ Q2 2013 Held for 12y 5m+	$912.31B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$1.2B 0.08% of portfolio	2.79% 1.3M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
Invesco Ltd. ETF Provider	Brian Christopher Hartigan CEO	$1.0B 0.17% of portfolio	2.38% 1.1M shares	≤ Q2 2013 Held for 12y 5m+	$633.08B
FRANKLIN RESOURCES INC Institution	Gregory E. Johnson CEO	$968.6M 0.24% of portfolio	2.20% 1.1M shares	Q2 2016 Held for 9y 5m	$395.36B
JPMORGAN CHASE & CO Institution	Jamie Dimon CEO	$794.7M 0.05% of portfolio	1.80% 863.2K shares	≤ Q2 2013 Held for 12y 5m+	$1.56T
T T. Rowe Price Investment Management, Inc. Insurance Manager	John Edward Robison President	$691.1M 0.43% of portfolio	1.57% 750.7K shares	Q4 2024 Held for 11 months	$161.58B

Net Capital Flow

Institutional buying and selling activity for MPWR in Q3 2025

Traded: −$52.8M
Buyers: 508
Sellers: 381
Total Bought: +$2.8B
Total Sold: −$2.8B
Avg Position: $41.7M

Biggest Buyers

Institution	Net Bought	Current Position
B BlackRock, Inc. Institution	+$458.1M +497.6K shares	$5.3B 5.7M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$232.8M +252.8K shares	$239.8M 260.5K shares
FIRST TRUST ADVISORS LP ETF Provider	+$164.4M +178.6K shares	$412.3M 447.8K shares
FMR LLC Institution	+$158.4M +172.1K shares	$3.3B 3.6M shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$142.7M +155.0K shares	$157.0M 170.5K shares
VANGUARD GROUP INC Institution	+$123.4M +134.1K shares	$5.6B 6.1M shares
Marshall Wace LLP Institution	+$121.7M +132.1K shares	$121.7M 132.1K shares
ING INVESTMENT MANAGEMENT LLC Insurance Manager	+$120.8M +131.2K shares	$330.8M 359.3K shares
A Analog Century Management LP Hedge Fund•Long/Short	+$71.4M +77.6K shares	$71.4M 77.6K shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Long Only Manager	+$65.5M +71.2K shares	$512.4M 556.6K shares

Biggest Sellers

Institution	Net Sold	Current Position
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	−$474.1M −515.0K shares	$1.4B 1.6M shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	−$230.4M −250.2K shares	$417.0M 452.9K shares
VAN ECK ASSOCIATES CORP ETF Provider	−$202.2M −219.6K shares	$674.3M 732.4K shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	−$163.1M −177.1K shares	$691.1M 750.7K shares
R Rafferty Asset Management, LLC Institution	−$137.9M −149.8K shares	$349.2M 379.3K shares
B BROWN ADVISORY INC RIA/Wealth	−$123.5M −134.2K shares	$672.2M 730.1K shares
CITIGROUP INC Institution	−$92.8M −100.7K shares	$164.0M 178.2K shares
R Rokos Capital Management LLP Hedge Fund•Global Macro	−$88.8M −121.4K shares	Sold Off 0 shares
A AXA Institution	−$76.5M −104.6K shares	Sold Off 0 shares
GOLDMAN SACHS GROUP INC Institution	−$71.9M −78.1K shares	$399.9M 434.3K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited MPWR in Q3 2025

New Positions: 81
New Value: $63.7M
Exited Positions: 79
Exited Value: $340.9M

New Positions

Institution	Position Value
NZS Capital, LLC Hedge Fund•Sector	$23.9M 26.0K shares
CCM INVESTMENT ADVISERS LLC RIA/Wealth	$4.5M 4.9K shares
Groupe la Francaise Fund of Funds	$3.7M 4.0K shares
ARGENT CAPITAL MANAGEMENT LLC Long Only Manager	$3.7M 4.0K shares
First National Advisers, LLC RIA/Wealth	$2.8M 3.1K shares
S Sunpointe, LLC Institution	$2.5M 2.7K shares
RDA Financial Network RIA/Wealth	$1.9M 2.1K shares
Empirical Asset Management, LLC RIA/Wealth	$1.6M 1.7K shares
Optimize Financial Inc RIA/Wealth	$1.5M 1.6K shares
Sheets Smith Investment Management RIA/Wealth	$1.3M 1.5K shares

Exited Positions

Institution	Previous Position
R Rokos Capital Management LLP Hedge Fund•Global Macro	$88.8M 121.4K shares
A AXA Institution	$76.5M 104.6K shares
T TWINBEECH CAPITAL LP Hedge Fund•Quant	$35.1M 48.0K shares
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$22.3M 30.5K shares
Davidson Kempner Capital Management LP Hedge Fund•Multi-Strategy	$14.6M 20.0K shares
M Meridiem Capital Partners LP Hedge Fund•Long/Short	$11.0M 15.1K shares
Engineers Gate Manager LP Hedge Fund•Quant	$9.5M 13.0K shares
I ICICI Prudential Asset Management Co Ltd Institution	$9.4M 12.9K shares
G Greenland Capital Management LP Hedge Fund•Multi-Strategy	$7.0M 9.5K shares
Woodline Partners LP Hedge Fund•Long/Short	$6.2M 8.5K shares

Options Activity

Institutions with the largest Call and Put options positions in MPWR as of Q3 2025

Call Positions: 22
Call Value: $355.2M
Put Positions: 23
Put Value: $379.9M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$176.7M 1.9K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$49.1M 533.0 contracts
W WOLVERINE TRADING, LLC Institution	$48.1M 543.0 contracts
J JANE STREET GROUP, LLC Institution	$21.0M 228.0 contracts
P PEAK6 LLC Institution	$10.7M 116.0 contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$9.0M 98.0 contracts
Walleye Trading LLC RIA/Wealth	$8.6M 93.0 contracts
C Cubist Systematic Strategies, LLC Institution	$7.2M 78.0 contracts
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$5.0M 54.0 contracts
Q Qube Research & Technologies Ltd Institution	$4.4M 48.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$149.4M 1.6K contracts
D D. E. Shaw & Co., Inc. Institution	$39.4M 428.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$32.5M 353.0 contracts
J JANE STREET GROUP, LLC Institution	$27.3M 297.0 contracts
W WOLVERINE TRADING, LLC Institution	$27.3M 308.0 contracts
Walleye Trading LLC RIA/Wealth	$23.5M 255.0 contracts
P PEAK6 LLC Institution	$21.8M 237.0 contracts
B BNP PARIBAS ARBITRAGE, SA Institution	$17.3M 1.9 contracts
C Cubist Systematic Strategies, LLC Institution	$10.4M 113.0 contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$8.7M 95.0 contracts

Most Committed Institutions

Institutions with MPWR as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Grandeur Peak Global Advisors, LLC Long Only Manager	Blake Harold Walker CEO	8.05% $60.0M	0.14% 65.2K shares	Q1 2020 Held for 5y 8m	$745.4M
PIER 88 INVESTMENT PARTNERS LLC Hedge Fund•Long/Short	Francis Thomas Timons CEO	5.64% $5.3M	0.01% 5.8K shares	Q2 2025 Held for 5 months	$94.4M
Pembroke Management, LTD Long Only Manager	Nicolas Gilles Chevalier CEO	4.93% $49.7M	0.11% 53.9K shares	Q2 2017 Held for 8y 5m	$1.0B
Avalon Global Asset Management LLC Hedge Fund•Long/Short	Nancy Ann Kukacka Managing Partner	4.84% $20.7M	0.05% 22.5K shares	Q4 2024 Held for 11 months	$427.8M
A Analog Century Management LP Hedge Fund•Long/Short	Val Zlatev Founder	3.83% $71.4M	0.16% 77.6K shares	Q3 2025 Held for 2 months	$1.9B
4D Advisors, LLC Hedge Fund•Long/Short	Kurt F Graeber Managing Partner	3.19% $6.0M	0.01% 6.5K shares	Q4 2024 Held for 11 months	$187.8M
ARCADIA INVESTMENT MANAGEMENT CORP/MI RIA/Wealth	Michael Lewis Mueller President	2.89% $18.7M	0.04% 20.3K shares	Q2 2016 Held for 9y 5m	$648.6M
V Vantage Investment Partners, LLC Institution	-	2.81% $41.0M	0.09% 44.6K shares	Q3 2022 Held for 3y 2m	$1.5B
Lombard Odier Asset Management Ltd Private Equity	Jr. Thomas Smith President	2.42% $38.0M	0.03% 14.0K shares	Q1 2025 Held for 8 months	$1.6B
EULAV Asset Management Long Only Manager	Mitchell Eric Appel CEO	2.32% $99.7M	0.23% 108.3K shares	Q1 2023 Held for 2y 8m	$4.3B

Hedge Fund Spotlight

Discover hedge funds investing in MPWR

Advanced Portfolio Management, LLC

Hedge Fund • Multi-Strategy

Portfolio ManagerRobert Edward Kiernan

Portfolio Value: $39.6M
Positions: 126
Last Reported: Q3 2025

Sector Allocation

Position in Monolithic Power Systems

Market Value: $2.8K
Shares Held: 3.0
Portfolio Weight: 0.01%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Broadcom Inc. AVGO	Semiconductors Technology	$4.3M	10.95%
2 Vistra VST	Independent Power Producers Utilities	$3.0M	7.63%
3 Microsoft MSFT	Software - Infrastructure Technology	$2.5M	6.29%