13F Insight
DOSSIER · 13F Holders · Q4 2025Healthcare · Pharmaceutical Preparations
SMMT

SUMMIT THERAPEUTICS INC

233 institutions still hold SUMMIT THERAPEUTICS INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 86627T108·Pharmaceutical Preparations·233 13F holders·last filed Dec 31, 2025
Market cap
—
13F value held
$1.9B
visible holders
Holders
233
filers reporting
Concentration
32.76%
BAKER BROS. ADVISORS LP #1
top holder share
AI Holders Summary · Q4 2025

Summit Therapeutics' Q2 2026 tracked ownership is effectively a near-zero institutional snapshot: CX Institutional shows 591 shares worth , while MassMutual Private Wealth & Trust has fallen to zero shares from 5. The only concrete changes are reductions—CX cut from 848 to 591 shares and MassMutual exited its tiny position—so SMMT's visible holder base is not just narrow, it is almost immaterial by reported value.

Top holders

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

#HolderValueShares% port.Quarter
01
BAKER BROS. ADVISORS LP
CIK 0001263508
$636M36.4M3.73%Q4 202502
FMR LLC
CIK 0000315066
$206M10.9M0.01%Q1 202603
BlackRock, Inc.
CIK 0002012383
$183M9.7M0.00%Q1 202604
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$157M8.3M0.02%Q1 202605
STATE STREET CORP
CIK 0000093751
$133M7.0M0.00%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$108M5.7M0.00%Q1 202607
Vanguard Portfolio Management
CIK 0002100121· Index
$99M5.2M0.01%Q1 202608
UBS Group AG
CIK 0001610520
$70M3.7M0.01%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$63M3.3M0.00%Q1 202610
CITADEL ADVISORS LLC
CIK 0001423053
$56M3.2M0.01%Q4 202511
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$46M2.4M0.01%Q1 202612
MORGAN STANLEY
CIK 0000895421
$31M1.7M0.00%Q1 202613
APEIRON CAPITAL Ltd
CIK 0001843111
$25M1.3M23.21%Q1 202614
Pictet Asset Management Holding SA
CIK 0001993888
$24M1.3M0.03%Q1 202615
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$19M981K0.01%Q1 202616
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$18M961K0.00%Q1 202617
TD ASSET MANAGEMENT INC
CIK 0001056053
$18M957K0.01%Q1 202618
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$18M934K0.00%Q1 202619
SUPERSTRING CAPITAL MANAGEMENT LP
CIK 0001931118
$17M893K12.09%Q1 202620
Point72 Asset Management, L.P.
CIK 0001603466
$15M801K0.02%Q1 2026
Page 1 of 12
213 more holders available. Log in →
Insiders at SUMMIT THERAPEUTICS INC
Zanganeh Mahkam →Duggan Robert W →Xia Yu →Anand Bhaskar →Soni Manmeet Singh →Cesano Alessandra →Huber Jeff →Ronaghi Mostafa →