Question 1

Does California State Teachers Retirement System own INSM stock?

Accepted Answer

Yes. As of its Q2 2026 13F, California State Teachers Retirement System holds 304,798 shares of INSM (Insmed), worth $32.5M.

Question 2

How many shares of INSM does California State Teachers Retirement System own?

Accepted Answer

As of its Q2 2026 13F, California State Teachers Retirement System holds 304,798 shares of INSM (Insmed).

Question 3

What is California State Teachers Retirement System's INSM position worth?

Accepted Answer

As of its Q2 2026 13F, California State Teachers Retirement System's INSM position is worth $32.5M.

Question 4

Is California State Teachers Retirement System buying or selling INSM?

Accepted Answer

In Q2 2026, California State Teachers Retirement System increased its INSM position by 1,616 shares (+0.5%).

Question 5

When did California State Teachers Retirement System first buy INSM?

Accepted Answer

California State Teachers Retirement System already held INSM 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	Increased	304,798	+0.5%	$32.5M	0.0%	$106.62	29
2026-Q1	Decreased	303,182	-2.3%	$49.6M	0.1%	$163.52	0
2025-Q4	Increased	310,330	+73.0%	$54M	0.1%	$174.04	44
2025-Q3	Increased	179,402	+3.4%	$25.8M	0.0%	$144.01	30
2025-Q2	Increased	173,529	+10.0%	$17.5M	0.0%	$100.64	31
2025-Q1	Increased	157,698	+2.8%	$12M	0.0%	$76.29	29
2024-Q4	Increased	153,343	+4.5%	$10.6M	0.0%	$69.04	29
2024-Q3	Increased	146,742	+5.8%	$10.7M	0.0%	$73.00	29