Insmed Incorporated
US ˙ NasdaqGS ˙ US4576693075

SecurityINSM / Insmed Incorporated
InstitutionCinctive Capital Management LP
Latest Disclosed Ownership73,063 shares
Latest Disclosed Value $ 11,947,262
Cinctive Capital Management LP reports 307.15% increase in ownership of INSM / Insmed Incorporated

On May 15, 2026 - Cinctive Capital Management LP filed a 13F-HR form disclosing ownership of 73,063 shares of Insmed Incorporated (US:INSM) valued at $11,947,262 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 17,945 shares of Insmed Incorporated. This represents a change in shares of 307.15% during the quarter. The current value of the position is $6,883,996 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F INSMED COM PAR $.01 457669307 73,063 55,118 307.15 11,947 282.55 0.7784
2026-02-17 2025-12-31 13F INSMED COM PAR $.01 457669307 17,945 -48,236 -72.88 3,123 -67.23 0.1691
2025-11-14 2025-09-30 13F INSMED COM PAR $.01 457669307 66,181 33,307 101.32 9,531 188.09 0.4557
2025-08-14 2025-06-30 13F INSMED COM PAR $.01 457669307 32,874 9,321 39.57 3,308 84.19 0.1749
2025-05-15 2025-03-31 13F INSMED COM PAR $.01 457669307 23,553 -1,699 -6.73 1,797 3.04 0.1375
2025-02-12 2024-12-31 13F INSMED COM PAR $.01 457669307 25,252 -5,454 -17.76 1,743 -22.22 0.0887
2024-11-14 2024-09-30 13F INSMED COM PAR $.01 457669307 30,706 -114,851 -78.90 2,242 -77.02 0.1222
2024-08-14 2024-06-30 13F INSMED COM PAR $.01 457669307 145,557 85,294 141.54 9,752 496.82 0.4643
2024-05-15 2024-03-31 13F INSMED COM PAR $.01 457669307 60,263 -114,737 -65.56 1,635 -69.87 0.0760
2024-02-14 2023-12-31 13F INSMED COM PAR $.01 457669307 175,000 175,000 5,423 0.3602
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.