Merit Medical Systems

MMSI • NASDAQ

Merit Medical Systems is a medical - instruments & supplies company in the healthcare sector on NASDAQ, led by Fred P. Lampropoulos, with a market cap of $5.1B. As of Q3 2025, 103% of shares are held by 370 institutional investors, with BlackRock, Inc. as the largest holder at 14.69%.

Chief Executive OfficerFred P. Lampropoulos

Market Cap$5.1B

Medical - Instruments & Supplies

Healthcare

Employees7.0K

Websitemerit.com

Country

United States of America

Overview

Overview of institutional ownership in MMSI as of Q3 2025 with a market cap of $4.9B

All Institutions

Institutions: 370
Value Held: $5.1B
Shares Held: 61.0M
Avg Position: $13.7M
Median Position: $684.1K

Hedge Funds

Hedge Funds: 40
Value Held: $550.4M
Shares Held: 6.6M
Avg Position: $13.8M
Median Position: $1.4M

Ownership Breakdown

Institutional (non-HF)

91.81%

$4.5B

Hedge Funds

11.17%

$550.4M

Retail & Other

Based on market cap of $4.9B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in MMSI as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$724.1M 0.01% of portfolio	14.69% 8.7M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$552.9M 0.01% of portfolio	11.22% 6.6M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$183.0M 0.01% of portfolio	3.71% 2.2M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
Conestoga Capital Advisors, LLC Long Only Manager	Joseph Francis Monahan Partner	$181.9M 2.92% of portfolio	3.69% 2.2M shares	Q2 2019 Held for 6y 5m	$6.2B
FULLER & THALER ASSET MANAGEMENT, INC. Long Only Manager	Raife Brandon Giovinazzo Managing Partner	$153.4M 0.52% of portfolio	3.11% 1.8M shares	Q1 2020 Held for 5y 8m	$29.4B
FMR LLC Institution	-	$134.9M 0.01% of portfolio	2.74% 1.6M shares	≤ Q2 2013 Held for 12y 5m+	$1.92T
M MAVERICK CAPITAL LTD Hedge Fund•Long/Short	Jessica Opland Managing Partner	$134.0M 1.77% of portfolio	2.72% 1.6M shares	Q1 2025 Held for 8 months	$7.6B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$120.9M 0.01% of portfolio	2.45% 1.5M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
M MACQUARIE GROUP LTD Institution	-	$110.8M 0.13% of portfolio	2.25% 1.3M shares	≤ Q2 2013 Held for 12y 5m+	$82.9B
WELLINGTON MANAGEMENT CO LLP Long Only Manager	Jean Marie Hynes CEO	$103.2M 0.02% of portfolio	2.09% 1.2M shares	Q4 2024 Held for 11 months	$571.21B

Net Capital Flow

Institutional buying and selling activity for MMSI in Q3 2025

Traded: −$75.3M
Buyers: 193
Sellers: 177
Total Bought: +$464.2M
Total Sold: −$539.6M
Avg Position: $12.3M

Biggest Buyers

Institution	Net Bought	Current Position
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$81.6M +980.8K shares	$103.2M 1.2M shares
THRIVENT FINANCIAL FOR LUTHERANS Insurance Manager	+$44.6M +536.1K shares	$62.4M 750.1K shares
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	+$40.9M +491.0K shares	$40.9M 491.0K shares
G Greenhouse Funds LLLP Hedge Fund•Long/Short	+$23.6M +284.0K shares	$72.6M 871.9K shares
N NOMURA HOLDINGS INC Institution	+$22.5M +269.8K shares	$34.0M 408.0K shares
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	+$20.3M +244.0K shares	$26.3M 315.6K shares
M MAVERICK CAPITAL LTD Hedge Fund•Long/Short	+$19.2M +230.8K shares	$134.0M 1.6M shares
B BESSEMER GROUP INC Institution	+$16.9M +203.5K shares	$16.9M 203.6K shares
ING INVESTMENT MANAGEMENT LLC Insurance Manager	+$14.9M +179.4K shares	$40.7M 489.5K shares
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager	+$10.4M +124.4K shares	$71.9M 864.0K shares

Biggest Sellers

Institution	Net Sold	Current Position
FMR LLC Institution	−$76.6M −920.4K shares	$134.9M 1.6M shares
Invesco Ltd. ETF Provider	−$72.2M −867.7K shares	$59.5M 714.4K shares
Iron Triangle Partners LP Hedge Fund•Long/Short	−$36.7M −392.8K shares	Sold Off 0 shares
Polar Capital Holdings Plc Long Only Manager	−$35.8M −383.3K shares	Sold Off 0 shares
LOOMIS SAYLES & CO L P Long Only Manager	−$28.8M −346.3K shares	$37.2M 447.4K shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	−$27.6M −331.4K shares	$28.4M 341.8K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	−$25.9M −311.5K shares	$34.7M 416.8K shares
AMERIPRISE FINANCIAL INC Institution	−$19.3M −232.3K shares	$26.1M 314.0K shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$18.0M −216.2K shares	$7.5M 89.6K shares
VANGUARD GROUP INC Institution	−$15.5M −185.8K shares	$552.9M 6.6M shares

Entry and Exit Activity

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

New Positions: 19
New Value: $5.8M
Exited Positions: 41
Exited Value: $108.6M

New Positions

Institution	Position Value
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy	$4.5M 53.7K shares
BAM Wealth Management, LLC RIA/Wealth	$275.4K 3.3K shares
P PharVision Advisers, LLC Hedge Fund•Long/Short	$265.4K 3.2K shares
Quantinno Capital Management LP Hedge Fund•Market Neutral	$249.0K 3.0K shares
HOHIMER WEALTH MANAGEMENT, LLC RIA/Wealth	$217.6K 2.6K shares
Vestmark Advisory Solutions, Inc. Fund of Funds	$209.8K 2.5K shares
FIRST HORIZON NATIONAL CORP RIA/Wealth	$77.7K 933.0 shares
S Salomon & Ludwin, LLC Institution	$37.1K 441.0 shares
Transamerica Financial Advisors, Inc. Institution	$15.8K 190.0 shares
Sontag Advisory, LLC RIA/Wealth	$10.4K 125.0 shares

Exited Positions

Institution	Previous Position
Iron Triangle Partners LP Hedge Fund•Long/Short	$36.7M 392.8K shares
Polar Capital Holdings Plc Long Only Manager	$35.8M 383.3K shares
Susquehanna Portfolio Strategies, LLC Private Equity	$7.3M 78.2K shares
C Capitolis Liquid Global Markets LLC Private Equity	$6.5M 70.0K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$2.9M 30.6K shares
FORMULA GROWTH LTD Hedge Fund•Long/Short	$2.6M 28.0K shares
BAILARD, INC. RIA/Wealth	$2.3M 24.4K shares
E EXCHANGE TRADED CONCEPTS, LLC Institution	$1.7M 18.3K shares
LINDEN ADVISORS LP Hedge Fund•Multi-Strategy	$1.6M 17.3K shares
S SHAKER INVESTMENTS LLC/OH Hedge Fund•Long/Short	$1.4M 14.9K shares

Options Activity

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

Call Positions: 5
Call Value: $75.8M
Put Positions: 3
Put Value: $2.1M

Call Positions

Institution	Position Value
UBS Group AG Institution	$71.7M 8.6K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$2.4M 284.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$923.9K 111.0 contracts
Walleye Trading LLC RIA/Wealth	$657.5K 79.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$191.4K 23.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$1.5M 177.0 contracts
P Portman Square Capital LLP Hedge Fund•Vol Arbitrage	$590.9K 71.0 contracts
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$41.6K 5.0 contracts

Most Committed Institutions

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

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Conestoga Capital Advisors, LLC Long Only Manager	Joseph Francis Monahan Partner	2.92% $181.9M	3.69% 2.2M shares	Q2 2019 Held for 6y 5m	$6.2B
G Greenhouse Funds LLLP Hedge Fund•Long/Short	Joseph Michael Milano CIO	2.82% $72.6M	1.47% 871.9K shares	Q1 2023 Held for 2y 8m	$2.6B
Aristotle Capital Boston, LLC Long Only Manager	David Michael Adams CEO	1.77% $34.7M	0.70% 416.7K shares	Q4 2014 Held for 10y 11m	$2.0B
M MAVERICK CAPITAL LTD Hedge Fund•Long/Short	Jessica Opland Managing Partner	1.77% $134.0M	2.72% 1.6M shares	Q1 2025 Held for 8 months	$7.6B
Ranger Investment Management, L.P. Long Only Manager	Andrew Ferguson Hill President	1.19% $17.0M	0.34% 204.2K shares	Q4 2024 Held for 11 months	$1.4B
A Arrowpoint Asset Management, LLC Hedge Fund•Multi-Strategy	David John Corkins Managing Partner	0.96% $51.8M	1.05% 622.1K shares	Q4 2013 Held for 11y 11m	$5.4B
Riverwater Partners LLC RIA/Wealth	Adam Jonathan Peck CIO	0.85% $2.1M	0.04% 24.7K shares	Q3 2024 Held for 1y 2m	$240.9M
EMERALD ADVISERS INC/PA Long Only Manager	Kenneth George Mertz CEO	0.75% $23.4M	0.47% 280.6K shares	Q3 2017 Held for 8y 2m	$3.1B
OBERWEIS ASSET MANAGEMENT INC/ Long Only Manager	James Walter Oberweis President	0.74% $19.3M	0.39% 232.0K shares	Q2 2020 Held for 5y 5m	$2.6B
EMERALD MUTUAL FUND ADVISERS TRUST Long Only Manager	Stacey Lynn Sears President	0.73% $13.8M	0.28% 165.7K shares	Q3 2017 Held for 8y 2m	$1.9B