MMSI Merit Medical Systems, Inc.

NASDAQ
$86.36

Merit Medical Systems, Inc. (MMSI) Institutional Ownership

What the institutions did with MMSI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
455
filed both this quarter and last
Managers holding
399
+4 on the quarter
Buyers
244
60 opened new
Sellers
180
56 sold out entirely
Buyer share
57.6%
of managers who traded it
Breadth
+15.1
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
BlackRock, Inc. 9.5M 15.1%
VANGUARD PORTFOLIO MANAGEMENT LLC 3.5M 5.5%
VANGUARD CAPITAL MANAGEMENT LLC 2.6M 4.1%
STATE STREET CORP 2.5M 3.9%
Conestoga Capital Advisors, LLC 2.0M 3.2%
GEODE CAPITAL MANAGEMENT, LLC 1.6M 2.6%
FULLER & THALER ASSET MANAGEMENT, INC. 1.6M 2.6%
DIMENSIONAL FUND ADVISORS LP 1.5M 2.3%
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 1.3M 2.0%
CONGRESS ASSET MANAGEMENT CO 1.2M 1.9%
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 1.1M 1.8%
Greenhouse Funds LLLP 1.1M 1.7%
CITIGROUP INC 1.0M 1.6%
FMR LLC 1.0M 1.6%
WESTWOOD HOLDINGS GROUP INC 1.0M 1.6%
MORGAN STANLEY 1.0M 1.6%
NEUBERGER BERMAN GROUP LLC 1.0M 1.6%
MAVERICK CAPITAL LTD 978.6K 1.6%
PRICE T ROWE ASSOCIATES INC /MD/ 958.7K 1.5%
CITADEL ADVISORS LLC 909.9K 1.5%
ROYAL BANK OF CANADA 826.9K 1.3%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 743.9K 1.2%
NORGES BANK 711.2K 1.1%
NORTHERN TRUST CORP 709.3K 1.1%
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 679.2K 1.1%

Largest changes

Manager Action Previous Current Change
NEUBERGER BERMAN GROUP LLC Increased 5.6K 1.0M +996.6K
BlackRock, Inc. Increased 8.8M 9.5M +630.2K
Irenic Capital Management LP New 0 542.6K +542.6K
Point72 Asset Management, L.P. Reduced 741.9K 203.7K -538.2K
FULLER & THALER ASSET MANAGEMENT, INC. Reduced 2.1M 1.6M -502.5K
AQR CAPITAL MANAGEMENT LLC Increased 25.0K 464.2K +439.2K
Freestone Grove Partners LP Reduced 382.9K 16.6K -366.3K
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Increased 777.5K 1.1M +360.3K
ArrowMark Colorado Holdings LLC Sold Out 348.6K 0 -348.6K
TWO SIGMA INVESTMENTS, LP Increased 111.1K 434.7K +323.6K
PRICE T ROWE ASSOCIATES INC /MD/ Increased 655.0K 958.7K +303.8K
MAVERICK CAPITAL LTD Increased 714.1K 978.6K +264.5K
MORGAN STANLEY Reduced 1.3M 1.0M -254.1K
SG Capital Management LLC New 0 243.5K +243.5K
J. Goldman & Co LP New 0 242.8K +242.8K
FRANKLIN RESOURCES INC Reduced 259.7K 17.7K -242.0K
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Increased 447.5K 679.2K +231.7K
MetLife Investment Management, LLC Increased 32.0K 257.4K +225.3K
MARSHALL WACE, LLP Reduced 574.4K 349.2K -225.2K
DIMENSIONAL FUND ADVISORS LP Increased 1.2M 1.5M +221.5K
Boston Trust Walden Corp Increased 277.2K 472.9K +195.6K
RENAISSANCE TECHNOLOGIES LLC Reduced 314.2K 125.4K -188.8K
Conestoga Capital Advisors, LLC Reduced 2.2M 2.0M -187.7K
Qube Research & Technologies Ltd Reduced 194.2K 12.0K -182.2K
BESSEMER GROUP INC Reduced 241.2K 66.0K -175.2K
WELLINGTON MANAGEMENT GROUP LLP Reduced 303.8K 143.0K -160.8K
Balyasny Asset Management L.P. Reduced 320.7K 161.8K -158.9K
CONGRESS ASSET MANAGEMENT CO Increased 1.0M 1.2M +155.1K
UBS Group AG Increased 340.6K 495.6K +155.0K
ADAGE CAPITAL PARTNERS GP, L.L.C. Sold Out 140.0K 0 -140.0K
GOLDMAN SACHS GROUP INC Reduced 647.8K 508.2K -139.6K
GEODE CAPITAL MANAGEMENT, LLC Increased 1.5M 1.6M +117.6K
STATE STREET CORP Increased 2.4M 2.5M +113.5K
Champlain Investment Partners, LLC Increased 290.5K 403.9K +113.4K
Aberdeen Group plc Increased 428.3K 538.2K +109.9K
RAYMOND JAMES FINANCIAL INC Reduced 376.8K 269.2K -107.5K
ROYAL BANK OF CANADA Reduced 921.3K 826.9K -94.4K
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP New 0 88.2K +88.2K
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Increased 1.2M 1.3M +80.9K
Creative Planning Increased 75.1K 146.9K +71.8K
Edgestream Partners, L.P. Reduced 87.5K 16.7K -70.8K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Increased 675.4K 743.9K +68.5K
Campbell & CO Investment Adviser LLC Sold Out 68.4K 0 -68.4K
SEI INVESTMENTS CO Increased 228.5K 296.5K +68.0K
VANGUARD CAPITAL MANAGEMENT LLC Reduced 2.7M 2.6M -65.7K
WESTWOOD HOLDINGS GROUP INC Increased 946.5K 1.0M +64.9K
Assenagon Asset Management S.A. Increased 205.9K 270.8K +64.9K
Connor, Clark & Lunn Investment Management Ltd. Increased 124.3K 186.4K +62.0K
Aristotle Capital Boston, LLC Reduced 377.6K 316.5K -61.0K
TUDOR INVESTMENT CORP ET AL Sold Out 60.7K 0 -60.7K
D. E. Shaw & Co., Inc. Increased 134.2K 189.7K +55.5K
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ Increased 420.9K 476.1K +55.3K
Rockefeller Capital Management L.P. Reduced 250.8K 196.4K -54.4K
Holocene Advisors, LP Increased 11.8K 65.4K +53.6K
CITADEL ADVISORS LLC Reduced 962.8K 909.9K -52.9K
SEIZERT CAPITAL PARTNERS, LLC Increased 26.7K 79.5K +52.7K
Greenhouse Funds LLLP Reduced 1.1M 1.1M -50.3K
VANGUARD PORTFOLIO MANAGEMENT LLC Reduced 3.5M 3.5M -49.3K
OBERWEIS ASSET MANAGEMENT INC/ Increased 424.2K 473.4K +49.2K
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main New 0 49.1K +49.1K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.