Summit Therapeutics Inc.

SMMT

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001599298

SEC filings (opens in a new tab)

No open-market purchases or sales by Summit Therapeutics Inc. insiders were filed in the last 90 days; 242 institutions reported holding it in 13F filings for Q2 2026, worth $1.98B in total; no superinvestor holds it.

13F holders, Q3 2026

Institutional positions in Summit Therapeutics Inc. as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 3; +2 vs. Q2 2026
Shares held: 2.30K; +1.71K (+288.5%) vs. Q2 2026
Total value: $38.4K; +$29.4K (+326.2%) vs. Q2 2026
New holders: 2; 1 more added
Sold out: 0; 0 more reduced

241 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting SMMT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding SMMT and their total value by quarter
Quarter	Holders	Value
Q2 2026	242	$1.98B
Q1 2026	222	$2.25B
Q4 2025	206	$2.06B
Q3 2025	232	$2.13B
Q2 2025	226	$2.08B
Q1 2025	202	$1.91B
Q4 2024	196	$1.65B
Q3 2024	164	$1.85B
Q2 2024	121	$563.0M
Q1 2024	103	$205.5M
Q4 2023	95	$84.4M
Q3 2023	91	$60.4M
Q2 2023	96	$87.6M
Q1 2023	86	$37.0M
Q4 2022	57	$34.5M
Q3 2022	42	$3.78M
Q2 2022	41	$8.46M
Q1 2022	48	$27.4M
Q4 2021	52	$30.0M
Q3 2021	51	$55.3M
Q2 2021	54	$82.4M
Q1 2021	38	$54.5M

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Summit Therapeutics Inc.; share changes are against Q2 2026.

Institutions holding SMMT in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Entropy Technologies, LP	–	–	–	–	Not filed
Handelsbanken Fonder AB	–	–	–	–	Not filed
Hudson Bay Capital Management LP	–	–	–	–	Not filed
Machina Capital S.A.S.	–	–	–	–	Not filed
New York State Common Retirement Fund	–	–	–	–	Not filed
DnB Asset Management AS	–	–	–	–	Not filed
Ameriprise Financial Inc	–	–	–	–	Not filed
Levin Capital Strategies, L.P.	–	–	–	–	Not filed
Steward Partners Investment Advisory, LLC	–	–	–	–	Not filed
Brevan Howard Capital Management LP	–	–	–	–	Not filed
Group One Trading, L.P.	–	–	–	–	Not filed
SEI Investments Co	–	–	–	–	Not filed
Russell Investments Group, Ltd.	–	–	–	–	Not filed
Public Employees Retirement System of Ohio	–	–	–	–	Not filed
CWM Advisors, LLC	–	–	–	–	Not filed
State of Wyoming	–	–	–	–	Not filed
Mirae Asset Global Investments Co., Ltd.	–	–	–	–	Not filed
Verition Fund Management LLC	–	–	–	–	Not filed
E Fund Management Co., Ltd.	–	–	–	–	Not filed
TCG Advisory Services, LLC	–	–	–	–	Not filed
Cinctive Capital Management LP	–	–	–	–	Not filed
Allianz Asset Management GmbH	–	–	–	–	Not filed
Cetera Investment Advisers	–	–	–	–	Not filed
Alliancebernstein L.P.	–	–	–	–	Not filed
Vanguard Asset Management, Ltd	–	–	–	–	Not filed
Great Valley Advisor Group, Inc.	–	–	–	–	Not filed
Summit Trail Advisors, LLC	–	–	–	–	Not filed
ProShare Advisors LLC	–	–	–	–	Not filed
Farther Finance Advisors, LLC	–	–	–	–	Not filed
Banque Cantonale Vaudoise	–	–	–	–	Not filed
Aigen Investment Management, LP	–	–	–	–	Not filed
CIBC Asset Management Inc	–	–	–	–	Not filed
SRS Capital Advisors, Inc.	–	–	–	–	Not filed
Mirae Asset Global ETFs Holdings Ltd.	–	–	–	–	Not filed
Virtus Investment Advisers, Inc.	–	–	–	–	Not filed
US Bancorp	–	–	–	–	Not filed
Raymond James Financial Inc	–	–	–	–	Not filed
LPL Financial LLC	–	–	–	–	Not filed
Xponance, Inc.	–	–	–	–	Not filed
Vance Wealth, Inc.	–	–	–	–	Not filed
Q3 Asset Management	–	–	–	–	Not filed
Legal & General Group Plc	–	–	–	–	Not filed
Excelsior Advisor Network LLC	–	–	–	–	Not filed
State of Wisconsin Investment Board	–	–	–	–	Not filed
nVerses Capital, LLC	–	–	–	–	Not filed
Bayesian Capital Management, LP	–	–	–	–	Not filed
GF Fund Management Co. Ltd.	–	–	–	–	Not filed
New World Advisors LLC	–	–	–	–	Not filed
Gotham Asset Management, LLC	–	–	–	–	Not filed
Persistent Asset Partners Ltd	–	–	–	–	Not filed
Bellevue Group AG	–	–	–	–	Not filed
New York Life Investment Management LLC	–	–	–	–	Not filed
Creative Planning	–	–	–	–	Not filed
Three Seasons Wealth, LLC	–	–	–	–	Not filed
Blankinship & Foster, LLC	–	–	–	–	Not filed
Janney Montgomery Scott LLC	–	–	–	–	Not filed
Two Sigma Securities, LLC	–	–	–	–	Not filed
Graham Capital Management, L.P.	–	–	–	–	Not filed
Blackstone Group Inc.	–	–	–	–	Not filed
Gsa Capital Partners LLP	–	–	–	–	Not filed
Advisors Asset Management, Inc.	–	–	–	–	Not filed
SummitTX Capital, L.P.	–	–	–	–	Not filed
Mackenzie Financial Corp	–	–	–	–	Not filed
MAI Capital Management	–	–	–	–	Not filed
Willis Investment Counsel	–	–	–	–	Not filed
Sage Mountain Advisors LLC	–	–	–	–	Not filed
Federation des caisses Desjardins du Quebec	–	–	–	–	Not filed
Royal Bank of Canada	–	–	–	–	Not filed
Nykredit A/S	–	–	–	–	Not filed
MetLife Investment Management	–	–	–	–	Not filed
Havemeyer Place LP	–	–	–	–	Not filed
Caitong International Asset Management Co., Ltd	–	–	–	–	Not filed
Advisor Group Holdings, Inc.	–	–	–	–	Not filed
Fifth Third Bancorp	–	–	–	–	Not filed
Osterweis Capital Management Inc	–	–	–	–	Not filed
Jones Financial Companies LLLP	–	–	–	–	Not filed
Pacer Advisors, Inc.	–	–	–	–	Not filed
Pinnacle Wealth Planning Services, Inc.	–	–	–	–	Not filed
National Bank of Canada	–	–	–	–	Not filed
STRS Ohio	–	–	–	–	Not filed
Adirondack Trust Co	–	–	–	–	Not filed
Truvestments Capital LLC	–	–	–	–	Not filed
Simplex Trading, LLC	–	–	–	–	Not filed
California State Teachers Retirement System	–	–	–	–	Not filed
Larson Financial Group LLC	–	–	–	–	Not filed
GAMMA Investing LLC	–	–	–	–	Not filed
Ball & Co Wealth Management Inc.	–	–	–	–	Not filed
E Fund Management (Hong Kong) Co., Ltd.	–	–	–	–	Not filed
Tower Research Capital LLC (TRC)	–	–	–	–	Not filed
Vermillion Wealth Management, Inc.	–	–	–	–	Not filed
Sterling Capital Management LLC	–	–	–	–	Not filed
Golden State Wealth Management, LLC	–	–	–	–	Not filed
Ossiam	–	–	–	–	Not filed
Global Retirement Partners, LLC	–	–	–	–	Not filed
Smartleaf Asset Management LLC	–	–	–	–	Not filed
Los Angeles Capital Management LLC	–	–	–	–	Not filed
Rosenberg Matthew Hamilton	–	–	–	–	Not filed
LRI Investments, LLC	–	–	–	–	Not filed
Rakuten Securities, Inc.	–	–	–	–	Not filed
WPG Advisers, LLC	–	–	–	–	Not filed