Manager × security

GW&K Investment Management, LLC INSM holdings history

Who else holds this security? →

INSMED INC · CUSIP 457669307 · CIK 1082917

Some filings reported values in thousands; those figures were scaled ×1000 to dollars.
This is the oldest quarter open without an account, so changes against the quarter before it are withheld. Sign in to see them.
Citable facts

As of 2026-06-30, GW&K Investment Management, LLC reported 629.76K INSM (shares), valued at $67.15M, or 0.52% of its reported non-derivative portfolio. Filed 2026-08-12.

Verify history & sources →
Portfolio weight and quantity history
Reported portfolio weight
0.52%
Shares
629.76K
629,760
Reported value
$67.15M
USD

Shares increased 1.08%; reported value decreased 34.09%, and weight changed -0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.

Left: % · Right: Shares · Independently scaled axes

Exact data and methodology

Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.

QuarterWeightQuantitySource
Q2 20260.52%629,760SEC filing ↗Filed Aug 12, 2026
Q1 20260.90%623,048SEC filing ↗Filed May 13, 2026
Q4 20250.73%482,670SEC filing ↗Filed Feb 11, 2026
Q3 20250.77%601,803SEC filing ↗Filed Nov 12, 2025
Q2 20251.15%1,274,316SEC filing ↗Filed Aug 11, 2025
Q1 20250.97%1,377,726SEC filing ↗Filed May 5, 2025
Q4 20240.67%1,135,393SEC filing ↗Filed Feb 5, 2025
Q3 20240.72%1,153,515SEC filing ↗Filed Nov 7, 2024
Q2 20240.47%761,732SEC filing ↗Filed Aug 12, 2024
Q1 20240.30%1,269,898SEC filing ↗Filed May 8, 2024
Q4 20230.37%1,291,772SEC filing ↗Filed Feb 9, 2024

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q4 20230.37%1,291,772$40.03MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Feb 9, 2024
Q1 20240.30%1,269,898$34.45MShares decreased 1.69%; reported value decreased 13.94%, and weight changed -0.07 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 8, 2024
Q2 20240.47%761,732$51.04MShares decreased 40.02%; reported value increased 48.14%, and weight changed +0.17 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 12, 2024
Q3 20240.72%1,153,515$84.21MShares increased 51.43%; reported value increased 65.00%, and weight changed +0.25 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 7, 2024
Q4 20240.67%1,135,393$78.39MShares decreased 1.57%; reported value decreased 6.91%, and weight changed -0.05 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 5, 2025
Q1 20250.97%1,377,726$105.11MShares increased 21.34%; reported value increased 34.09%, and weight changed +0.30 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 5, 2025
Q2 20251.15%1,274,316$128.25MShares decreased 7.51%; reported value increased 22.02%, and weight changed +0.18 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 11, 2025
Q3 20250.77%601,803$86.67MShares decreased 52.77%; reported value decreased 32.42%, and weight changed -0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 12, 2025
Q4 20250.73%482,670$84.00MShares decreased 19.80%; reported value decreased 3.07%, and weight changed -0.04 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 11, 2026
Q1 20260.90%623,048$101.88MShares increased 29.08%; reported value increased 21.28%, and weight changed +0.17 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 13, 2026
Q2 20260.52%629,760$67.15MShares increased 1.08%; reported value decreased 34.09%, and weight changed -0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 12, 2026
GW&K Investment Management, LLC · INSMED INC

Take these holdings further.

This page includes 11 of 11 reported holdings. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

  • Download CSV
  • Earlier quarters
  • Advanced screening & filtering
  • API & AI access
Already have an account?

+ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.

MCP  https://api.akkrudata.ai/mcp

get_institutional_portfolio
{"cik":"1082917","quarter":"2026Q2","cusip":"457669307"}

get_institutional_manager_history
{"cik":"1082917","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint
https://api.akkrudata.ai/mcp
API / MCP documentation
/documents
llms.txt
/llms.txt
Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

13F reports quarter-end long positions in securities traded on US exchanges, filed by managers holding at least $100 million of such securities; it is not the manager's full portfolio, not assets under management, and value changes are not returns. Weights use the reported total value as denominator. Option rows show notional value, not premium or net exposure. Amendments are merged into the quarter when Akkru could match them.