INSMED Inc (INSM) — Institutional Holders, Q2 2026 (page 4)
669 institutional investment managers reported a INSM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $23.8B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 301 to 400. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
INSM 13F holders ranked 301–400 of 669
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 301 | Quantitative Investment Management#301 · 15,894 sh | 15,894 | $1.7M | 0.18% | +11.1% |
| 302 | Brevan Howard Capital Management#302 · 15,677 sh | 15,677 | $1.7M | 0.01% | +345.2% |
| 303 | TRUIST FINANCIAL#303 · 15,621 sh | 15,621 | $1.7M | <0.01% | +1.3% |
| 304 | AMALGAMATED BANK#304 · 15,577 sh | 15,577 | $1.7M | — | -2.2% |
| 305 | EMERALD ADVISERS#305 · 15,252 sh | 15,252 | $1.6M | 0.04% | +27.2% |
| 306 | OAK RIDGE INVESTMENTS#306 · 15,068 sh | 15,068 | $1.6M | 0.09% | -6.1% |
| 307 | Saudi Central Bank#307 · 14,732 sh | 14,732 | $1.6M | 0.02% | +87.1% |
| 308 | PROFUND ADVISORS#308 · 14,602 sh | 14,602 | $1.6M | 0.04% | -47.7% |
| 309 | SBI Okasan Asset Management Ltd.#309 · 14,700 sh | 14,700 | $1.5M | 0.05% | -18.3% |
| 310 | Simplify Asset Management#310 · 14,190 sh | 14,190 | $1.5M | — | +31.6% |
| 311 | Exome Asset Management#311 · 13,873 sh | 13,873 | $1.5M | 0.91% | -47.9% |
| 312 | Federation des caisses Desjardins du Quebec#312 · 13,722 sh | 13,722 | $1.5M | <0.01% | +19.1% |
| 313 | TWINBEECH CAPITAL#313 · 13,646 sh | 13,646 | $1.5M | 0.26% | New |
| 314 | Investment Management of Ontario#314 · 13,421 sh | 13,421 | $1.4M | 0.02% | -11.8% |
| 315 | Capital Investment Advisors#315 · 13,238 sh | 13,238 | $1.4M | — | -0.1% |
| 316 | S#316 · 13,000 sh | 13,000 | $1.4M | 0.08% | +56.6% |
| 317 | THRIVENT FINANCIAL FOR LUTHERANS#317 · 12,633 sh | 12,633 | $1.3M | <0.01% | 0.0% |
| 318 | Sterling Capital Management#318 · 12,580 sh | 12,580 | $1.3M | — | -3.2% |
| 319 | Atria Investments#319 · 12,370 sh | 12,370 | $1.3M | — | -43.4% |
| 320 | INCEPTIONR#320 · 12,296 sh | 12,296 | $1.3M | 0.32% | +137.7% |
| 321 | WEALTH ENHANCEMENT ADVISORY SERVICES#321 · 11,300 sh | 11,300 | $1.3M | — | +24.4% |
| 322 | TOKIO MARINE ASSET MANAGEMENT LTD#322 · 12,200 sh | 12,200 | $1.3M | — | +31.3% |
| 323 | Banque Cantonale Vaudoise#323 · 12,070 sh | 12,070 | $1.3M | 0.05% | +207.7% |
| 324 | ABN AMRO INVESTMENT SOLUTIONS#324 · 12,028 sh | 12,028 | $1.3M | — | -8.5% |
| 325 | Ilmarinen Mutual Pension Insurance#325 · 12,000 sh | 12,000 | $1.3M | <0.01% | 0.0% |
| 326 | MetLife Investment Management#326 · 11,926 sh | 11,926 | $1.3M | <0.01% | -3.0% |
| 327 | Rakuten Investment Management#327 · 12,109 sh | 12,109 | $1.3M | <0.01% | -72.4% |
| 328 | Virtus Investment Advisers#328 · 11,884 sh | 11,884 | $1.3M | 0.30% | +177.5% |
| 329 | Aster Capital Management (DIFC) Ltd#329 · 11,814 sh | 11,814 | $1.3M | 0.27% | New |
| 330 | O'SHAUGHNESSY ASSET MANAGEMENT#330 · 11,730 sh | 11,730 | $1.3M | <0.01% | -26.9% |
| 331 | AlphaCentric Advisors#331 · 11,699 sh | 11,699 | $1.2M | 1.06% | +31.8% |
| 332 | Aureus Asset Management#332 · 11,441 sh | 11,441 | $1.2M | 0.07% | +90.7% |
| 333 | Maryland State Retirement & Pension System#333 · 11,369 sh | 11,369 | $1.2M | 0.02% | +8.4% |
| 334 | Vanguard Personalized Indexing Management#334 · 11,342 sh | 11,342 | $1.2M | <0.01% | +1.2% |
| 335 | Inspire Investing#335 · 11,287 sh | 11,287 | $1.2M | — | New |
| 336 | EMERALD MUTUAL FUND ADVISERS#336 · 11,218 sh | 11,218 | $1.2M | 0.04% | +36.3% |
| 337 | F/m Investments#337 · 11,218 sh | 11,218 | $1.2M | 0.06% | +36.3% |
| 338 | Legato Capital Management#338 · 11,129 sh | 11,129 | $1.2M | 0.10% | -71.9% |
| 339 | Tower Research Capital (TRC)#339 · 10,927 sh | 10,927 | $1.2M | 0.03% | -29.1% |
| 340 | Aquatic Capital Management#340 · 10,593 sh | 10,593 | $1.1M | 0.04% | New |
| 341 | CREDIT AGRICOLE S A#341 · 10,554 sh | 10,554 | $1.1M | <0.01% | +40.7% |
| 342 | TWO SIGMA SECURITIES#342 · 10,338 sh | 10,338 | $1.1M | 0.10% | +440.4% |
| 343 | Sanctuary Advisors#343 · 10,253 sh | 10,253 | $1.1M | <0.01% | -57.2% |
| 344 | CIBC Asset Management#344 · 10,148 sh | 10,148 | $1.1M | <0.01% | -78.9% |
| 345 | BAMCO#345 · 10,000 sh | 10,000 | $1.1M | <0.01% | -50.0% |
| 346 | PARK AVENUE SECURITIES#346 · 9,927 sh | 9,927 | $1.1M | — | -3.7% |
| 347 | LEUCADIA NATIONAL#347 · 9,896 sh | 9,896 | $1.1M | <0.01% | +182.7% |
| 348 | Vident Advisory#348 · 9,856 sh | 9,856 | $1.1M | <0.01% | +0.5% |
| 349 | Fieldview Capital Management#349 · 9,748 sh | 9,748 | $1.0M | 0.30% | +343.3% |
| 350 | DARK FOREST CAPITAL MANAGEMENT#350 · 9,356 sh | 9,356 | $997.5K | 0.06% | +280.6% |
| 351 | CIBC Bancorp USA#351 · 9,068 sh | 9,068 | $954.7K | <0.01% | -17.6% |
| 352 | M&T BANK#352 · 8,932 sh | 8,932 | $952.2K | <0.01% | -2.4% |
| 353 | Focus Partners Wealth#353 · 8,915 sh | 8,915 | $950.6K | <0.01% | +119.4% |
| 354 | Waldron Private Wealth#354 · 8,810 sh | 8,810 | $939.3K | 0.03% | 0.0% |
| 355 | GABELLI FUNDS#355 · 8,550 sh | 8,550 | $911.6K | <0.01% | +216.7% |
| 356 | Calamos Advisors#356 · 8,507 sh | 8,507 | $907.0K | <0.01% | -76.6% |
| 357 | LMR Partners LLP#357 · 8,400 sh | 8,400 | $895.6K | <0.01% | +154.5% |
| 358 | PNC FINANCIAL SERVICES GROUP#358 · 8,154 sh | 8,154 | $869.4K | <0.01% | -8.5% |
| 359 | RMB Capital Management#359 · 8,014 sh | 8,014 | $854.5K | 0.01% | New |
| 360 | QRG CAPITAL MANAGEMENT#360 · 7,984 sh | 7,984 | $851.3K | <0.01% | -7.2% |
| 361 | WILEY BROS.-AINTREE CAPITAL#361 · 7,952 sh | 7,952 | $847.0K | <0.01% | -3.0% |
| 362 | Yorktown Management & Research#362 · 7,925 sh | 7,925 | $845.0K | 0.52% | 0.0% |
| 363 | Summit Trail Advisors#363 · 7,922 sh | 7,922 | $844.6K | 0.01% | +18.0% |
| 364 | PRUDENTIAL FINANCIAL#364 · 7,815 sh | 7,815 | $833.2K | <0.01% | -50.8% |
| 365 | CASTLEARK MANAGEMENT#365 · 7,790 sh | 7,790 | $830.6K | 0.02% | 0.0% |
| 366 | E. Ohman J:or Asset Management AB#366 · 7,789 sh | 7,789 | $830.5K | — | +48.7% |
| 367 | J.Safra Asset Management#367 · 7,650 sh | 7,650 | $815.6K | 0.04% | +4651.6% |
| 368 | US BANCORP \DE\#368 · 7,517 sh | 7,517 | $801.5K | <0.01% | +1.9% |
| 369 | NewEdge Advisors#369 · 7,354 sh | 7,354 | $784.0K | <0.01% | New |
| 370 | State of Wyoming#370 · 7,336 sh | 7,336 | $782.2K | 0.08% | New |
| 371 | Snowden Capital Advisors#371 · 7,262 sh | 7,262 | $774.3K | 0.02% | -4.1% |
| 372 | KEYBANK NATIONAL ASSOCIATION#372 · 7,252 sh | 7,252 | $773.2K | <0.01% | -51.1% |
| 373 | Rockefeller Capital Management L.P.#373 · 7,165 sh | 7,165 | $763.9K | <0.01% | -3.6% |
| 374 | AustralianSuper Pty Ltd#374 · 7,157 sh | 7,157 | $763.1K | <0.01% | -38.7% |
| 375 | ProShare Advisors#375 · 7,109 sh | 7,109 | $758.0K | <0.01% | -97.5% |
| 376 | MYDA Advisors#376 · 7,000 sh | 7,000 | $746.3K | 0.11% | 0.0% |
| 377 | PRINCIPAL SECURITIES#377 · 6,728 sh | 6,728 | $717.3K | <0.01% | +27.8% |
| 378 | Verition Fund Management#378 · 6,633 sh | 6,633 | $707.2K | <0.01% | New |
| 379 | Nan Fung Group Ltd#379 · 6,580 sh | 6,580 | $701.6K | 0.53% | 0.0% |
| 380 | Quarry#380 · 6,254 sh | 6,254 | $666.8K | 0.06% | New |
| 381 | North Dakota State Investment Board#381 · 6,226 sh | 6,226 | $663.8K | — | +2.9% |
| 382 | Cannon Advisors#382 · 6,018 sh | 6,018 | $662.6K | — | New |
| 383 | PEAK6#383 · 6,209 sh | 6,209 | $662.0K | <0.01% | -21.7% |
| 384 | MIRAE ASSET GLOBAL ETFS Ltd.#384 · 6,097 sh | 6,097 | $643.5K | <0.01% | -95.0% |
| 385 | Walleye Trading#385 · 5,834 sh | 5,834 | $622.0K | <0.01% | -23.4% |
| 386 | Laurion Capital Management#386 · 5,728 sh | 5,728 | $610.7K | 0.02% | New |
| 387 | Advisory Services Network#387 · 5,701 sh | 5,701 | $607.8K | <0.01% | +1907.4% |
| 388 | Bayesian Capital Management#388 · 5,700 sh | 5,700 | $607.7K | 0.39% | New |
| 389 | GROUPAMA ASSET MANAGMENT#389 · 5,541 sh | 5,541 | $580.4K | <0.01% | -0.9% |
| 390 | FULTON BANK, N.A.#390 · 5,348 sh | 5,348 | $570.2K | — | +0.2% |
| 391 | iA Global Asset Management#391 · 5,272 sh | 5,272 | $562.0K | <0.01% | -84.9% |
| 392 | MACQUARIE GROUP LTD#392 · 5,193 sh | 5,193 | $553.7K | <0.01% | 0.0% |
| 393 | PKO Investment Management Joint-Stock#393 · 5,100 sh | 5,100 | $543.8K | — | -56.8% |
| 394 | UniSuper Management Pty Ltd#394 · 5,079 sh | 5,079 | $541.5K | — | +20.9% |
| 395 | NWAM#395 · 5,071 sh | 5,071 | $540.7K | 0.03% | -88.7% |
| 396 | Ethic#396 · 5,002 sh | 5,002 | $533.3K | <0.01% | -25.0% |
| 397 | NEW YORK LIFE INVESTMENT MANAGEMENT#397 · 4,942 sh | 4,942 | $526.9K | <0.01% | +25.1% |
| 398 | Osmosis Investment Management UK Ltd#398 · 4,926 sh | 4,926 | $525.2K | 0.02% | -53.0% |
| 399 | Nelson, Van Denburg & Campbell Wealth Management Group#399 · 4,913 sh | 4,913 | $523.8K | — | +23.0% |
| 400 | Vise Technologies#400 · 4,891 sh | 4,891 | $521.5K | <0.01% | -22.5% |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.