13F Insight
DOSSIER · 13F Holders · Q1 2026Most-boughtAI cap-ex
MKSI 1.25 06/01/30

MKS INC.

80 institutions still hold MKS INC. as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 55306NAB0·80 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.6%
vs prior quarter
13F value held
$1.8B
50.0% inst. owned
of float
Holders
80
+140 QoQ
filers reporting
Activity
+15 / −32
+928 added · −912 reduced
this quarter
Concentration
17.85%
LINDEN ADVISORS LP #1
top holder share
AI Holders Summary · Q1 2026

80 institutions reported MKSI 1.25 06/01/30 in Q1 2026. LINDEN ADVISORS LP leads at 17.8% of the visible book. +140 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
LINDEN ADVISORS LP
CIK 0001279396
$330M198.9M1.85%Q1 202602
VOYA INVESTMENT MANAGEMENT LLC
CIK 0001068837
$324M195.8M0.34%Q1 202603
Sculptor Capital LP
CIK 0001054587
$182M109.5M1.89%Q1 202604
Calamos Advisors LLC
CIK 0001316507
$130M78.3M0.46%Q1 202605
FRANKLIN RESOURCES INC
CIK 0000038777
$97M58.6M0.02%Q1 202606
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$96M58.2M0.05%Q1 202607
FMR LLC
CIK 0000315066
$79M47.9M0.00%Q1 202608
Invesco Ltd.
CIK 0000914208
$76M46.1M0.01%Q1 202609
JPMORGAN CHASE & CO
CIK 0000019617
$63M40.6M0.00%Q1 202610
MACKAY SHIELDS LLC
CIK 0000061227
$60M36.5M2.21%Q1 202611
ZAZOVE ASSOCIATES LLC
CIK 0001009012
$53M41.2M4.54%Q4 202512
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$51M30.9M0.79%Q1 202613
STATE STREET CORP
CIK 0000093751
$49M29.7M0.00%Q1 202614
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
CIK 0001595082
$46M28.0M0.63%Q1 202615
Alberta Investment Management Corp
CIK 0001463559· Sovereign
$46M27.5M0.27%Q1 202616
DeepCurrents Investment Group LLC
CIK 0001754535
$45M27.0M1.44%Q1 202617
BANK OF MONTREAL /CAN/
CIK 0000927971
$41M25.0M0.02%Q1 202618
BlackRock, Inc.
CIK 0002012383
$38M22.8M0.00%Q1 202619
SSI INVESTMENT MANAGEMENT LLC
CIK 0000938487
$22M13.1M1.49%Q1 202620
ABSOLUTE INVESTMENT ADVISERS, LLC
CIK 0001316187
$20M12.3M2.38%Q1 2026
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