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.

Q2 2026 vs. Q1 2026

How the institutions holding Summit Therapeutics Inc. changed between Q1 2026 and Q2 2026.

All holders in Q2 2026 All holders in Q1 2026

13F holders of SMMT: Q1 2026 compared with Q2 2026
Measure	Q1 2026	Of which not filed for Q2 2026	Q2 2026	Change
Holders	222	2	242	+22
Shares	118.9M	13.1K	135.9M	+17.0M (+14.3%)
Value	$2.25B	$249.1K	$1.98B	−$272.3M (−12.1%)

2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (57)

Institutions that held Summit Therapeutics Inc. at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to SMMT in Q2 2026
Institution	Shares	Value	% of portfolio
Adage Capital Partners GP, L.L.C.	1,989,591	$29.0M	0.04%
Norges Bank	1,382,519	$20.1M	0.00%
Logos Global Management LP	1,350,000	$19.7M	0.85%
Octagon Capital Advisors LP	1,250,000	$18.2M	1.67%
Kynam Capital Management, LP	1,200,000	$17.5M	0.97%
Elmind Capital, LP	493,820	$7.19M	1.81%
Ghisallo Capital Management LLC	350,000	$5.10M	0.10%
Hohimer Wealth Management, LLC	339,100	$4.94M	0.51%
HRT Financial LP	197,653	$2.88M	0.01%
Trexquant Investment LP	184,013	$2.68M	0.02%
HSBC Holdings PLC	120,560	$1.78M	0.00%
Caption Management, LLC	100,000	$1.46M	0.05%
XTX Topco Ltd	81,402	$1.19M	0.02%
Seven Fleet Capital Management LP	73,300	$1.09M	0.18%
Nicolet Bankshares Inc	72,593	$1.06M	0.03%
Engineers Gate Manager LP	67,871	$988.9K	0.01%
Bridgefront Capital, LLC	60,416	$880.3K	0.23%
Diadema Partners LP	60,000	$874.2K	0.31%
Hudson Bay Capital Management LP	54,950	$800.6K	0.00%
Brevan Howard Capital Management LP	45,164	$658.0K	0.01%
CWM Advisors, LLC	36,609	$533.4K	0.02%
State of Wyoming	35,973	$524.1K	0.05%
TCG Advisory Services, LLC	30,197	$440.0K	0.01%
Cinctive Capital Management LP	29,871	$435.2K	0.02%
Summit Trail Advisors, LLC	25,585	$372.8K	0.00%
Aigen Investment Management, LP	24,477	$356.6K	0.10%
LPL Financial LLC	22,261	$324.3K	0.00%
Excelsior Advisor Network LLC	17,975	$261.9K	0.03%
nVerses Capital, LLC	17,749	$258.6K	0.40%
Bayesian Capital Management, LP	17,200	$250.6K	0.16%
New World Advisors LLC	16,361	$238.4K	0.04%
Persistent Asset Partners Ltd	15,312	$223.1K	0.07%
Janney Montgomery Scott LLC	12,562	$183.0K	0.00%
Two Sigma Securities, LLC	12,491	$182.0K	0.02%
Graham Capital Management, L.P.	11,987	$174.7K	0.00%
Blackstone Group Inc.	11,754	$171.3K	0.00%
Gsa Capital Partners LLP	11,423	$166.0K	0.01%
SummitTX Capital, L.P.	10,809	$157.5K	0.00%
Mackenzie Financial Corp	10,442	$152.1K	0.00%
Sage Mountain Advisors LLC	10,000	$145.7K	0.01%
Nykredit A/S	7,634	$111.2K	0.00%
Caitong International Asset Management Co., Ltd	5,536	$80.7K	0.01%
Pacer Advisors, Inc.	3,451	$50.0K	0.00%
Ossiam	733	$10.7K	0.00%
Global Retirement Partners, LLC	686	$9.99K	0.00%
Rialto Wealth Management, LLC	396	$5.78K	0.00%
Zions Bancorporation, National Association	132	$1.92K	0.00%
Northwestern Mutual Wealth Management Co	122	$1.78K	0.00%
Rossby Financial, LCC	53	$772	0.00%
Manchester Capital Management LLC	43	$627	0.00%
UMA Financial Services, Inc.	35	$510	0.00%
Allied Private Wealth LLC	30	$470	0.00%
Silver Grove Financial Group, Inc.	23	$335	0.00%
Bartlett & Co. Wealth Management LLC	11	$160	0.00%
Ameriflex Group, Inc.	6	$87	0.00%
SJS Investment Consulting Inc.	1	$15	0.00%
Avion Wealth	29	$0	0.00%

Sold out (35)

Institutions that held Summit Therapeutics Inc. at the end of Q1 2026 and filed for Q2 2026 without it.

Institutions that sold out of SMMT in Q2 2026
Institution	Shares, Q1 2026	Value, Q1 2026
Superstring Capital Management LP	892,873	$16.9M
Tudor Investment Corp Et Al	384,988	$7.30M
ExodusPoint Capital Management, LP	256,255	$4.86M
Y-Intercept (Hong Kong) Ltd	119,655	$2.27M
Jefferies Financial Group Inc.	100,000	$1.90M
Canada Pension Plan Investment Board	91,000	$1.73M
NEXTBio Capital Management LP	89,717	$1.70M
Longaeva Partners L.P.	57,282	$1.09M
Boothbay Fund Management, LLC	53,964	$1.02M
SG Americas Securities, LLC	53,523	$1.01M
Fieldview Capital Management, LLC	49,204	$932.9K
Capstone Capital Management Ltd	23,146	$438.8K
Winton Group Ltd	22,400	$424.7K
Prelude Capital Management, LLC	20,000	$379.2K
Arrowpoint Investment Partners (Singapore) Pte. Ltd.	12,136	$230.1K
Lighthouse Investment Partners, LLC	11,991	$227.3K
DRW Securities, LLC	11,533	$218.7K
Jain Global LLC	10,786	$204.5K
Evoke Wealth, LLC	10,668	$202.3K
PSP Research LLC	10,223	$193.8K
Eurizon Capital SGR S.p.A.	6,908	$131.0K
Versant Capital Management, Inc	831	$15.8K
Sound Income Strategies, LLC	410	$7.76K
Aster Capital Management (DIFC) Ltd	91	$1.75K
ZRC Wealth Management, LLC	91	$1.73K
Toth Financial Advisory Corp	90	$1.71K
Marquette Asset Management, LLC	44	$835
Golden State Equity Partners	40	$758
Horizon Investments, LLC	28	$531
Twin Peaks Wealth Advisors, LLC	12	$228
Hughes Financial Services, LLC	6	$114
Massmutual Trust Co FSB	5	$95
Activest Wealth Management	3	$57
Cassaday & Co Wealth Management LLC	2	$38
Root Financial Partners, LLC	1	$19

Not filed for Q2 2026 yet (2)

Institutions that held Summit Therapeutics Inc. at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding SMMT in Q1 2026 that haven't filed for Q2 2026
Institution	Shares, Q1 2026	Value, Q1 2026
U.S. Capital Wealth Advisors, LLC	12,009	$227.7K
CWM, LLC	1,131	$21.4K