Question 1

How many shares of INSM does BlackRock, Inc. own?

Accepted Answer

As of 2026-Q1, BlackRock, Inc. holds 16.7M shares of INSM (INSMED INC).

Question 2

What is BlackRock, Inc.'s INSM position worth?

Accepted Answer

As of 2026-Q1, BlackRock, Inc.'s INSM position is worth $2.7B.

Question 3

Is BlackRock, Inc. buying or selling INSM?

Accepted Answer

In 2026-Q1, BlackRock, Inc. increased their INSM position (+10.7% change in shares).

Question 4

When did BlackRock, Inc. first buy INSM?

Accepted Answer

Based on available 13F filings, BlackRock, Inc. first reported a position in INSM in 2024-Q4. They have held the position across 6 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Increased	16.7M	+10.7%	$2.7B	0.0%	$147.00	35
2025-Q4	Increased	15.1M	+21.8%	$2.6B	0.0%	$174.09	38
2025-Q3	Increased	12.4M	+11.0%	$1.8B	0.0%	$141.65	35
2025-Q2	Decreased	11.1M	-30.6%	$1.1B	0.0%	$99.49	0
2025-Q1	Increased	16M	+0.1%	$1.2B	0.0%	$77.99	32
2024-Q4	New	16M	-	$1.1B	0.0%	$68.87	44

INSM6 quarters

INSM
6 quarters