INSMED Inc

INSMNASDAQ

$111.12+2.53 (+2.33%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

INSMED Inc price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-27.3%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
FMR LLC	7.40%	$1.72B	0.07%	Not reported
BlackRock, Inc.	7.24%	$1.69B	0.03%	Not reported
JPMorgan Chase & Co	4.78%	$1.09B	0.06%	Not reported
Vanguard Portfolio Management LLC	4.77%	$1.11B	0.05%	Not reported
Vanguard Capital Management LLC	4.49%	$1.04B	0.02%	Not reported
Baker Bros. Advisors LP	4.03%	$938M	4.70%	Add 18.53%
Capital International Investors	3.77%	$878M	0.18%	Add 47.24%
Darwin Global Management, Ltd.	2.95%	$674M	17.91%	Reduce 61.73%
Ameriprise Financial Inc	2.83%	$659M	0.13%	Not reported
Orbis Allan Gray Ltd	2.78%	$648M	2.23%	Add 224.46%
State Street Corp	2.77%	$645M	0.02%	Not reported
D. E. Shaw & Co., Inc.	2.69%	$627M	0.30%	Not reported
Artisan Partners Limited Partnership	2.49%	$580M	0.92%	Reduce 16.63%
RTW Investments, LP	2.22%	$516M	4.41%	Not reported
Geode Capital Management, LLC	1.93%	$449M	0.02%	Not reported
Norges Bank	1.55%	$360M	0.04%	Not reported
Jupiter Topco LLC	1.19%	$278M	0.11%	Not reported
UBS Group AG	1.18%	$276M	0.04%	Not reported
Citadel Advisors LLC	1.17%	$273M	0.03%	Not reported
Maverick Capital Ltd	0.99%	$229M	2.03%	New Not reported
Millennium Management LLC	0.94%	$218M	0.08%	Not reported
Qube Research & Technologies Ltd	0.77%	$179M	0.17%	Not reported
Westfield Capital Management Co LP	0.75%	$174M	0.57%	Add 10.97%
T. Rowe Price Investment Management, Inc.	0.74%	$173M	0.11%	New Not reported
Integral Health Asset Management, LLC	0.73%	$171M	6.74%	Add 6.67%
Duquesne Family Office LLC	0.65%	$152M	2.92%	Add 23.45%
Goldman Sachs Group Inc	0.65%	$150M	0.01%	Not reported
Vanguard Fiduciary Trust Co	0.64%	$149M	0.03%	Not reported
Bellevue Group AG	0.64%	$149M	3.13%	Add 13786.96%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0.61%	$142M	0.03%	Not reported
Balyasny Asset Management L.P.	0.61%	$141M	0.18%	Not reported
Paradigm Biocapital Advisors LP	0.61%	$141M	2.65%	Add 5.70%
Northern Trust Corp	0.60%	$140M	0.02%	Not reported
Bank of New York Mellon Corp	0.60%	$140M	0.02%	Not reported
Two Sigma Investments, LP	0.57%	$132M	0.10%	Not reported
Morgan Stanley	0.57%	$132M	0.01%	Not reported
Pictet Asset Management Holding SA	0.56%	$130M	0.12%	Add 10.71%
Charles Schwab Investment Management Inc	0.56%	$129M	0.02%	Not reported
Hood River Capital Management LLC	0.48%	$113M	0.82%	Add 53.49%
Bank of America Corp	0.47%	$109M	0.01%	Not reported
Sei Investments Co	0.47%	$108M	0.10%	Not reported
Nwi Management LP	0.46%	$108M	5.00%	Reduce 50.00%
Castle Hook Partners LP	0.46%	$106M	0.49%	Reduce 21.77%
Jennison Associates LLC	0.41%	$96.5M	0.06%	Add 49.68%
Polar Capital Holdings Plc	0.41%	$95M	0.22%	Add 142.01%
FIL Ltd	0.39%	$91.3M	0.07%	Add 3.29%
Principal Financial Group Inc	0.39%	$91.3M	0.04%	Not reported
Adage Capital Partners GP, L.L.C.	0.39%	$90.6M	0.13%	Reduce 5.56%
Fiera Capital Corp	0.39%	$89.9M	0.33%	Reduce 17.51%
Legal & General Group Plc	0.38%	$88.1M	0.02%	Not reported

50 of 619 holders

Activity score

Premium

100

WEAK

STRONG

Unlock

AI Activity Analysis

Premium

Coming soonAI reads of insider, institutional and company activity will appear here for Premium accounts.

Historical Activity Patterns

Premium

Historical Activity PatternsHistorical periods where multiple activity categories converged, with subsequent market performance shown for context.Unlock