13F Insight
DOSSIER · 13F Holders · Q1 2026BellwetherCompounder
XLO

XILIO THERAPEUTICS INC

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

CUSIP 98422T209·23 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 1.3%
vs prior quarter
13F value held
$16M
75.0% inst. owned
of float
Holders
23
+52 QoQ
filers reporting
Activity
+31 / −109
+1,019 added · −881 reduced
this quarter
Concentration
34.02%
Bain Capital Life Sciences Investors, LLC #1
top holder share
AI Holders Summary · Q1 2026

23 institutions reported XLO in Q1 2026. Bain Capital Life Sciences Investors, LLC leads at 34.0% of the visible book. +52 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Bain Capital Life Sciences Investors, LLC
CIK 0001703031
$6M664K0.50%Q1 202602
Frazier Life Sciences Management, L.P.
CIK 0001892134
$4M423K0.09%Q1 202603
Sio Capital Management, LLC
CIK 0001482416
$1M152K0.18%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1M124K0.00%Q1 202605
Caligan Partners LP
CIK 0001727492
$942,996112K0.06%Q1 202606
Merck & Co., Inc.
CIK 0000310158
$891,309106K0.26%Q1 202607
Stonepine Capital Management, LLC
CIK 0001440771
$539,60264K0.22%Q1 202608
MORGAN STANLEY
CIK 0000895421
$483,51657K0.00%Q1 202609
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$416,85050K0.00%Q1 202610
AJU IB Investment Co., Ltd.
CIK 0001710065
$401,11548K1.31%Q1 202611
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$312,84837K0.00%Q1 202612
FMR LLC
CIK 0000315066
$307,45337K0.00%Q1 202613
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$239,47528K0.00%Q1 202614
Velan Capital Investment Management LP
CIK 0001848809
$120,13714K0.08%Q1 202615
Ghisallo Capital Management LLC
CIK 0001825214
$116,05814K0.00%Q1 202616
STATE STREET CORP
CIK 0000093751
$111,94613K0.00%Q1 202617
CWM, LLC
CIK 0001535847
$35,3724K0.00%Q1 202618
UBS Group AG
CIK 0001610520
$33,9604K0.00%Q1 202619
JPMORGAN CHASE & CO
CIK 0000019617
$1,9762400.00%Q1 202620
Vanguard Global Advisers, LLC
CIK 0001811242· Index
$1,7662100.00%Q1 2026
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