Question 1

How many shares of TMO does Castle Hook Partners LP own?

Accepted Answer

As of 2026-Q2, Castle Hook Partners LP holds 165,965 shares of TMO (THERMO FISHER SCIENTIFIC INC).

Question 2

What is Castle Hook Partners LP's TMO position worth?

Accepted Answer

As of 2026-Q2, Castle Hook Partners LP's TMO position is worth $83.2M.

Question 3

Is Castle Hook Partners LP buying or selling TMO?

Accepted Answer

In 2026-Q2, Castle Hook Partners LP opened a new position in TMO.

Question 4

When did Castle Hook Partners LP first buy TMO?

Accepted Answer

Based on available 13F filings, Castle Hook Partners LP first reported a position in TMO in 2020-Q4. They have held the position across 8 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	New	165,965	-	$83.2M	0.4%	$501.36	49
2022-Q2	Exited	0	-100.0%	$0	0.0%	$530.60	0
2022-Q1	Decreased	23,937	-37.1%	$14.1M	0.6%	$588.89	0
2021-Q4	Decreased	38,035	-51.0%	$25.4M	1.1%	$658.09	0
2021-Q3	Increased	77,641	+56.8%	$44.4M	1.6%	$572.96	65
2021-Q2	Decreased	49,504	-44.2%	$25M	1.9%	$502.18	0
2021-Q1	Decreased	88,650	-15.1%	$40.5M	3.7%	$445.84	0
2020-Q4	New	104,421	-	$48.6M	2.5%	$455.71	77

TMO8 quarters

TMO
8 quarters