Question 1

How many shares of VRTX does LOOMIS SAYLES & CO L P own?

Accepted Answer

As of 2026-Q1, LOOMIS SAYLES & CO L P holds 4M shares of VRTX (VERTEX PHARMACEUTICALS INC).

Question 2

What is LOOMIS SAYLES & CO L P's VRTX position worth?

Accepted Answer

As of 2026-Q1, LOOMIS SAYLES & CO L P's VRTX position is worth $1.8B.

Question 3

Is LOOMIS SAYLES & CO L P buying or selling VRTX?

Accepted Answer

In 2026-Q1, LOOMIS SAYLES & CO L P decreased their VRTX position (-0.7% change in shares).

Question 4

When did LOOMIS SAYLES & CO L P first buy VRTX?

Accepted Answer

Based on available 13F filings, LOOMIS SAYLES & CO L P first reported a position in VRTX in 2024-Q2. They have held the position across 26 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	4M	-0.7%	$1.8B	2.4%	$474.27	0
2025-Q4	Decreased	4M	-2.1%	$1.8B	2.2%	$453.74	0
2025-Q3	Increased	4.1M	+8.1%	$1.6B	1.9%	$395.31	54
2025-Q2	Increased	3.8M	+1.7%	$1.7B	2.1%	$441.30	56
2025-Q1	Decreased	3.7M	-0.7%	$1.8B	2.6%	$492.69	0
2024-Q4	Increased	3.8M	+23.0%	$1.5B	1.9%	$399.35	61
2024-Q3	Decreased	3.1M	-2.4%	$1.4B	1.9%	$462.88	0
2024-Q2	Increased	3.1M	+1.0%	$1.5B	2.0%	$468.72	55

VRTXShowing 8 of 26 quarters

VRTX
Showing 8 of 26 quarters