Question 1

Does Adage Capital Partners GP own XENE stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Adage Capital Partners GP holds 300,000 shares of XENE (Xenon Pharmaceuticals), worth $18.1M.

Question 2

How many shares of XENE does Adage Capital Partners GP own?

Accepted Answer

As of its Q2 2026 13F, Adage Capital Partners GP holds 300,000 shares of XENE (Xenon Pharmaceuticals).

Question 3

What is Adage Capital Partners GP's XENE position worth?

Accepted Answer

As of its Q2 2026 13F, Adage Capital Partners GP's XENE position is worth $18.1M.

Question 4

Is Adage Capital Partners GP buying or selling XENE?

Accepted Answer

In Q2 2026, Adage Capital Partners GP reduced its XENE position by 170,000 shares (-36.2%).

Question 5

When did Adage Capital Partners GP first buy XENE?

Accepted Answer

Adage Capital Partners GP already held XENE in its Q4 2018 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	300,000	-36.2%	$18.1M	0.0%	$60.36	0
2026-Q1	Decreased	470,000	-31.4%	$27.3M	0.0%	—	0
2025-Q4	Decreased	685,100	-18.0%	$30.7M	0.0%	—	0
2025-Q3	Decreased	835,100	-35.3%	$33.5M	0.1%	—	0
2025-Q2	Decreased	1.3M	-32.6%	$40.4M	0.1%	—	0
2025-Q1	Increased	1.9M	+2.8%	$64.2M	0.1%	—	36
2024-Q4	Decreased	1.9M	-10.6%	$73M	0.1%	—	0
2024-Q3	Increased	2.1M	+13.3%	$82M	0.1%	$38.65	40