13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
GH 0 11/15/27

GUARDANT HEALTH INC

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

CUSIP 40131MAB5·30 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 1.5%
vs prior quarter
13F value held
$467M
66.0% inst. owned
of float
Holders
30
+43 QoQ
filers reporting
Activity
+49 / −39
+856 added · −689 reduced
this quarter
Concentration
29.67%
ARISTEIA CAPITAL, L.L.C. #1
top holder share
AI Holders Summary · Q1 2026

30 institutions reported GH 0 11/15/27 in Q1 2026. ARISTEIA CAPITAL, L.L.C. leads at 29.7% of the visible book. +43 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$139M134.2M2.87%Q1 202602
LINDEN ADVISORS LP
CIK 0001279396
$100M96.9M0.56%Q1 202603
D. E. Shaw & Co., Inc.
CIK 0001009207
$95M88.9M0.05%Q4 202504
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$13M13.1M0.21%Q1 202605
CITIGROUP INC
CIK 0000831001
$13M12.6M0.01%Q1 202606
ADVENT CAPITAL MANAGEMENT /DE/
CIK 0001097278
$12M12.0M0.34%Q1 202607
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$12M11.7M0.01%Q1 202608
STATE STREET CORP
CIK 0000093751
$12M11.4M0.00%Q1 202609
Man Group plc
CIK 0001637460
$10M10.2M0.02%Q1 202610
Parallax Volatility Advisers, L.P.
CIK 0001521001
$10M10.0M0.03%Q1 202611
BANK OF AMERICA CORP /DE/
CIK 0000070858
$10M9.7M0.00%Q1 202612
CAPSTONE INVESTMENT ADVISORS, LLC
CIK 0001426196
$9M8.7M0.02%Q1 202613
BlackRock, Inc.
CIK 0002012383
$8M8.1M0.00%Q1 202614
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$6M6.0M0.00%Q1 202615
FMR LLC
CIK 0000315066
$6M5.4M0.00%Q1 202616
K2 PRINCIPAL FUND, L.P.
CIK 0001461790
$3M3K0.21%Q1 202617
VOYA INVESTMENT MANAGEMENT LLC
CIK 0001068837
$3M2.9M0.00%Q1 202618
RATIONAL ADVISORS, INC.
CIK 0001143565
$2M2.0M0.21%Q1 202619
TORONTO DOMINION BANK
CIK 0000947263
$2M1.6M0.00%Q1 202620
Jefferies Financial Group Inc.
CIK 0000096223
$2M1.5M0.01%Q1 2026
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