13F institutional ownership facts
Institutions tracked
42
Reported value
$100,843,527.00
Reported shares
2,262,080
Latest filing period
Q1 2026
Top institutional holders
- Two Sigma Investments · $74,963,945 · 0.06%
- Artisan Partners · $54,248,644 · 0.09%
- Jennison Associates · $71,626,284 · 0.05%
- AllianceBernstein (AB) · $66,367,595 · 0.02%
- Dmitry Balyasny - Balyasny Asset Management · $15,455,440 · 0.02%
- SG Americas Securities · $8,226,000 · 0.01%
Data source and limitations
This page uses public SEC Form 13F disclosures and related institutional filing data. 13F reports are periodic disclosures and may not represent current real-time holdings.
13F Hub provides research and education data only. It does not provide personalized investment advice.
$MRX
Institutional Holdings
42
Top Institutions
Top Institutions
Two Sigma Investments
1,681,560 shares
0.06%
% of Portfolio
Artisan Partners
1,216,883 shares
0.09%
% of Portfolio
Jennison Associates
1,606,691 shares
0.05%
% of Portfolio
AllianceBernstein (AB)
1,730,125 shares
0.02%
% of Portfolio
Dmitry Balyasny - Balyasny Asset Management
346,690 shares
0.02%
% of Portfolio
SG Americas Securities
184,519 shares
0.01%
% of Portfolio
Capital International Investors
3,488,093 shares
0.04%
% of Portfolio
Renaissance Technologies
80,520 shares
0.01%
% of Portfolio
Invesco
1,372,768 shares
0.01%
% of Portfolio
T. Rowe Price
1,906,029 shares
0.01%
% of Portfolio
Wellington Management
655,460 shares
0.01%
% of Portfolio
Ken Griffin - Citadel Advisors
173,474 shares
NaN%
% of Portfolio
Nuveen
380,738 shares
NaN%
% of Portfolio
Larry Fink - BlackRock
4,389,325 shares
NaN%
% of Portfolio
Adage Capital Partners
48,107 shares
NaN%
% of Portfolio
David Solomon - Goldman Sachs
482,108 shares
NaN%
% of Portfolio
BNP Paribas
94,641 shares
NaN%
% of Portfolio
Geode Capital Management
726,494 shares
NaN%
% of Portfolio
Northern Trust Corp
290,675 shares
NaN%
% of Portfolio
State Street Corp
873,461 shares
NaN%
% of Portfolio
Morgan Stanley
477,298 shares
NaN%
% of Portfolio
Legal & General
105,584 shares
NaN%
% of Portfolio
UBS Group
137,479 shares
NaN%
% of Portfolio
Charles Schwab
141,210 shares
NaN%
% of Portfolio
Janus Henderson Group
39,441 shares
NaN%
% of Portfolio
Neuberger Berman
22,761 shares
NaN%
% of Portfolio
Franklin Resources
58,421 shares
NaN%
% of Portfolio
Cliff Asness - AQR Capital Management
30,850 shares
NaN%
% of Portfolio
Jane Street Group
11,810 shares
NaN%
% of Portfolio
Voya Investment Mgmt
8,875 shares
NaN%
% of Portfolio
PNC Financial Services
37 shares
NaN%
% of Portfolio
David E. Shaw - D.E. Shaw & Co.
0 shares
0.00%
% of Portfolio
Israel Englander - Millennium Management
0 shares
0.00%
% of Portfolio
Chuck Royce - Royce & Associates
1,252,790 shares
0.55%
% of Portfolio
Garrett Thornburg - Thornburg Invest Mgmt
408,877 shares
0.19%
% of Portfolio
Lord, Abbett & Co. LLC
301,267 shares
0.04%
% of Portfolio
John P. Calamos, Sr. - Calamos Advisors LLC
110,114 shares
0.02%
% of Portfolio
Wasatch Advisors Inc
171,109 shares
0.05%
% of Portfolio
Verition Fund Management LLC
5,760 shares
NaN%
% of Portfolio
Lazard Asset Management
0 shares
0.00%
% of Portfolio
Jamie Dimon - JPMorgan Chase
0 shares
0.00%
% of Portfolio
Praetorian Pr
500,000 shares
8.11%
% of Portfolio
Institutional InsightPRO
Scale Distribution
MEGA
32%
LARGE
24%
MEDIUM
16%
SMALL
28%
Geographic Distribution
Institutional Activity
Buyers
57
Sellers
19
Holders
61
New
11
Exited
8
Insider TradingPRO
Trading Statistics
Insider Buyers
20
Insider Sellers
19
Purchase Value
$13.6M
Role Distribution
RatingPRO
87
A
Overall Score
Moderate institutional interest with stable holdings
Rating Dimensions
Recent Actions
New
12
Increased
29
Decreased
14
Exited
2
Total
45