# INSMED INC (INSM) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 457669307
Page URL: https://superinvestorclub.com/stock/INSM
Last updated: 2026-07-08T12:26:24.713Z

## Summary

As of the most recent 13F filing period, INSMED INC (INSM) is held by 2 tracked superinvestors with an aggregate position value of $48.5M representing 02955791154090 shares.

## Top institutional holders (2)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 295579 | $48.3M | 0.22% | 2026-03-31 |
| 2 | [Stanley Druckenmiller](https://superinvestorclub.com/manager/19) | Duquesne Family Office | 1154090 | $188,717 | 5.59% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-06-30: 2 holders, $70.7M aggregate, 0103597020000 shares
- 2024-09-30: 1 holders, $1.5M aggregate, 020000 shares
- 2024-12-31: 1 holders, $40,973 aggregate, 0593470 shares
- 2025-03-31: 2 holders, $32.5M aggregate, 04251251369050 shares
- 2025-06-30: 3 holders, $317.8M aggregate, 02253435804133100000 shares
- 2025-09-30: 2 holders, $443.5M aggregate, 02423435656539 shares
- 2025-12-31: 1 holders, $257.9M aggregate, 01481752 shares
- 2026-03-31: 2 holders, $48.5M aggregate, 02955791154090 shares

## Recent congressional trades (5)

- 2025-10-03: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-08-08: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-07-07: Gil Cisneros (Democrat-CA) sale $1,001 - $15,000
- 2025-06-16: Josh Gottheimer (Democrat-NJ) purchase $1,001 - $15,000
- 2025-04-09: Josh Gottheimer (Democrat-NJ) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "INSMED INC (INSM) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/INSM), aggregating SEC 13F, Form 4, and congressional disclosures."