INSMED Inc - Common Stock, par value $0.01 per share (INSM)

CUSIP: 457669307

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class
Equity / Common Stock, par value $0.01 per share
Total 13F shares
210,868,315
Total 13F value
$30,324,118,550
Holder snapshot 6 visible 7 signals
Share change
+679,537
Put/Call ratio
113%
SEC-reported price per share
$144.01
Number of holders
563
Value change
+$447,494,143
Number of buys
319
Open additional details 1 more signal available
Number of sells
268
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
215,451,077

Security key

457669307

Report period

Q3 2025

Institutions

563

Top holders

10

INSM full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 Previous quarter: Q2 2025 INSMED Inc SEC filings INSMED Inc company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of INSM - INSMED Inc - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
JPMORGAN CHASE & CO
Disclosed value leader
JPMORGAN CHASE & CO
Comparable rows
15/15
Latest evidence
29 Aug 2025
13D/G 13F Lead comparable stake: 11% 13D/G row: JPMORGAN CHASE & CO Showing 1-6 of 15 holder rows.

Quick read

JPMORGAN CHASE & CO leads the comparable SEC ownership view at 11%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens JPMORGAN CHASE & CO's linked filing trail.
Comparable ownership Top 5
JPMORGAN CHASE & CO 11%
PRICE T ROWE ASSOCIATES INC /MD/ 3.3%
Darwin Global Management, Ltd. 9%
VANGUARD GROUP INC 8.2%
BlackRock, Inc. 5.2%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
JPMORGAN CHASE & CO
13D/G 13F
Company
13D/G 13F
11%
$2,827,801,936
23,014,584 shares
 +$964,491,533 29 Aug 2025
PRICE T ROWE ASSOCIATES INC /MD/
13F 13D/G
Company · T. Rowe Price Associates, Inc.
13F 13D/G
3.3%
from 13D/G
$1,130,259,000
11,230,705 shares
 — 30 Jun 2025
Darwin Global Management, Ltd.
13F
Company
13F
9%
$1,924,596,343
19,344,621 shares
 — 30 Jun 2025
VANGUARD GROUP INC
13F
Company
13F
8.2%
$1,775,741,675
17,644,492 shares
 — 30 Jun 2025
BlackRock, Inc.
13F
Company
13F
5.2%
$1,121,374,365
11,142,432 shares
 — 30 Jun 2025
BAKER BROS. ADVISORS LP
13F
Company
13F
3.6%
$776,226,256
7,712,900 shares
 — 30 Jun 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
563
Shares
210,868,315
Rows available
563
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders
513
Q3 2025 holders
563
Holder diff
50
Investor Q2 2025 Shares Q3 2025 Shares Share Diff Share Chg % Q2 2025 value Q3 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .