INSMED INC

$INSM
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Smart money positioned

26 of the Top-200 alpha managers hold $INSM as of the latest 13F snapshot.

13F holders
12
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

26 holders · Q1 2026

$INSM is held by 26 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 11.73%, with an average of 1.89% of portfolio. Largest holder: Japan Post Holdings Co., Ltd. at 11.73%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Japan Post Holdings Co., Ltd.
11.73% ↑ +0.9pp
α +22.4pts
02
ACR Alpine Capital Research, LLC
8.11% held
α +26.8pts
03
Sectoral Asset Management Inc.
6.97% held
α +39.3pts
04
New England Professional Planning Group Inc.
5.59% held
α +25.4pts
05
Marcho Partners LLP
4.09% held
α +13.5pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 12 · Source: 13F-HR
01
Vanguard Group Inc.
0.05% of portfolio
21,076,344 sh
02
State Street
0.03% of portfolio
5,551,699 sh
03
Citadel
0.26% of portfolio
2,182,571 sh
04
Duquesne Family Office LLC
6.11% of portfolio
1,481,752 sh
05
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.04% of portfolio
1,215,025 sh
06
Bridgewater Associates
0.22% of portfolio
295,579 sh
07
Two Sigma
0.03% of portfolio
237,017 sh
08
Citigroup Inc.
0.02% of portfolio
233,304 sh
09
Erste Asset Management GmbH
0.03% of portfolio
41,746 sh
10
ADAR1 Capital Management, LLC
0.35% of portfolio
35,392 sh
See all 12 13F holders · Pro →

Insider activity · last 90 days

50 transactions · 7 filers
24 Jul 2026
Unknown —
· EX/ACQ
—
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M
24 Jul 2026
Unknown —
· EX/ACQ
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—
M
24 Jul 2026
Unknown —
▼ SOLD
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S
24 Jul 2026
Unknown —
▼ SOLD
—
—
S
24 Jul 2026
Unknown —
· EX/ACQ
—
—
M
24 Jul 2026
Unknown —
· EX/ACQ
—
—
M
10 Jul 2026
Unknown —
· EX/ACQ
—
—
M
10 Jul 2026
Unknown —
· EX/ACQ
—
—
M
10 Jul 2026
Unknown —
▼ SOLD
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—
S
10 Jul 2026
Unknown —
▼ SOLD
—
—
S
10 Jul 2026
Unknown —
▼ SOLD
—
—
S
10 Jul 2026
Unknown —
· EX/ACQ
—
—
M

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $INSM in the recent window.

Convergence · $INSM

Pattern cards reflect public SEC EDGAR and Congressional filing data only. Detection uses filing dates; trade execution dates may differ. Past convergence patterns do not predict future returns. Nothing here is investment advice.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 12:24 UTC.