Question 1

How many shares of SMMT does BAKER BROS. ADVISORS LP own?

Accepted Answer

As of 2026-Q2, BAKER BROS. ADVISORS LP holds 32.8M shares of SMMT (SUMMIT THERAPEUTICS INC).

Question 2

What is BAKER BROS. ADVISORS LP's SMMT position worth?

Accepted Answer

As of 2026-Q2, BAKER BROS. ADVISORS LP's SMMT position is worth $477.7M.

Question 3

Is BAKER BROS. ADVISORS LP buying or selling SMMT?

Accepted Answer

In 2026-Q2, BAKER BROS. ADVISORS LP decreased their SMMT position (-9.9% change in shares).

Question 4

When did BAKER BROS. ADVISORS LP first buy SMMT?

Accepted Answer

Based on available 13F filings, BAKER BROS. ADVISORS LP first reported a position in SMMT in 2024-Q3. They have held the position across 14 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	32.8M	-9.9%	$477.7M	2.4%	$14.57	0
2026-Q1	Unchanged	36.4M	0.0%	$690M	4.0%	$15.11	0
2025-Q4	Increased	36.4M	+7.9%	$636.5M	3.7%	$17.49	63
2025-Q3	Unchanged	33.7M	0.0%	$696.7M	5.0%	$21.16	0
2025-Q2	Increased	33.7M	+38.1%	$717.6M	7.0%	$20.60	81
2025-Q1	Unchanged	24.4M	0.0%	$471.2M	5.2%	$20.32	0
2024-Q4	Unchanged	24.4M	0.0%	$435.9M	4.7%	$17.89	0
2024-Q3	Increased	24.4M	+5.2%	$534.9M	5.5%	$20.89	64