Question 1

Does Adage Capital Partners GP own STX stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Adage Capital Partners GP holds 200,000 shares of STX (Seagate Technology Holdings), worth $193M.

Question 2

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

Accepted Answer

As of its Q2 2026 13F, Adage Capital Partners GP holds 200,000 shares of STX (Seagate Technology Holdings).

Question 3

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

Accepted Answer

As of its Q2 2026 13F, Adage Capital Partners GP's STX position is worth $193M.

Question 4

Is Adage Capital Partners GP buying or selling STX?

Accepted Answer

In Q2 2026, Adage Capital Partners GP increased its STX position by 14,600 shares (+7.9%).

Question 5

When did Adage Capital Partners GP first buy STX?

Accepted Answer

Adage Capital Partners GP already held STX in its Q2 2021 13F, the earliest on record, and has listed it in 15 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	200,000	+7.9%	$193M	0.3%	$964.23	39
2026-Q1	Increased	185,400	+10.9%	$72.6M	0.1%	$391.17	39
2025-Q4	Increased	167,201	+108.7%	$46M	0.1%	$274.49	47
2025-Q3	Increased	80,101	+249.8%	$18.9M	0.0%	$234.68	46
2025-Q2	New	22,901	—	$3.3M	0.0%	$143.03	37
2025-Q1	Exited	0	-100.0%	$0	0.0%	$83.74	0
2024-Q4	Increased	94,101	+158.5%	$8.1M	0.0%	$84.39	44
2024-Q3	New	36,401	—	$4M	0.0%	$105.88	37