BIOGEN INC. (BIIB) — Institutional Holders, Q2 2026 (page 5)
1,048 institutional investment managers reported a BIIB position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $30.7B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 401 to 500. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
BIIB 13F holders ranked 401–500 of 1,048
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 401 | GAMMA Investing#401 · 6,462 sh | 6,462 | $1.4M | — | +7.8% |
| 402 | TOKIO MARINE ASSET MANAGEMENT LTD#402 · 6,428 sh | 6,428 | $1.4M | — | 0.0% |
| 403 | Ballentine Partners#403 · 6,407 sh | 6,407 | $1.4M | 0.02% | +0.9% |
| 404 | NICOLET BANKSHARES#404 · 6,476 sh | 6,476 | $1.4M | 0.04% | -0.6% |
| 405 | denkapparat Operations GmbH#405 · 6,338 sh | 6,338 | $1.4M | 0.45% | 0.0% |
| 406 | Econ Financial Services#406 · 6,300 sh | 6,300 | $1.4M | — | +43.3% |
| 407 | MOGY JOEL R INVESTMENT COUNSEL#407 · 6,260 sh | 6,260 | $1.4M | — | 0.0% |
| 408 | Sigma Planning#408 · 6,193 sh | 6,193 | $1.3M | — | -14.0% |
| 409 | LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP#409 · 6,193 sh | 6,193 | $1.3M | — | 0.0% |
| 410 | Metis Global Partners#410 · 6,191 sh | 6,191 | $1.3M | 0.03% | +0.2% |
| 411 | Callan Family Office#411 · 6,183 sh | 6,183 | $1.3M | 0.03% | -4.9% |
| 412 | HB Wealth Management#412 · 6,176 sh | 6,176 | $1.3M | — | +8.7% |
| 413 | Kestra Advisory Services#413 · 6,154 sh | 6,154 | $1.3M | <0.01% | +5.9% |
| 414 | Rockefeller Capital Management L.P.#414 · 6,128 sh | 6,128 | $1.3M | <0.01% | -9.4% |
| 415 | Vinva Investment Management Ltd#415 · 6,056 sh | 6,056 | $1.3M | <0.01% | +345.3% |
| 416 | Bull Harbor Capital#416 · 6,026 sh | 6,026 | $1.3M | 0.25% | +18.7% |
| 417 | Mediolanum International Funds Ltd#417 · 6,010 sh | 6,010 | $1.3M | 0.01% | -0.7% |
| 418 | EMERALD ADVISERS#418 · 5,990 sh | 5,990 | $1.3M | 0.03% | -0.6% |
| 419 | BEESE FULMER INVESTMENT MANAGEMENT#419 · 5,959 sh | 5,959 | $1.3M | — | +24.1% |
| 420 | Sanctuary Advisors#420 · 5,838 sh | 5,838 | $1.3M | <0.01% | +3.9% |
| 421 | Virtus Investment Advisers#421 · 5,813 sh | 5,813 | $1.3M | 0.29% | +19.9% |
| 422 | Assenagon Asset Management S.A.#422 · 5,766 sh | 5,766 | $1.2M | — | -17.3% |
| 423 | MUFG Securities EMEA plc#423 · 5,747 sh | 5,747 | $1.2M | 0.01% | -4.5% |
| 424 | THRIVENT FINANCIAL FOR LUTHERANS#424 · 5,713 sh | 5,713 | $1.2M | <0.01% | -41.2% |
| 425 | North Star Investment Management#425 · 5,621 sh | 5,621 | $1.2M | 0.07% | 0.0% |
| 426 | AGP FRANKLIN#426 · 5,566 sh | 5,566 | $1.2M | 0.52% | +168.5% |
| 427 | AIA Group Ltd#427 · 5,545 sh | 5,545 | $1.2M | 0.02% | -40.6% |
| 428 | Twin Tree Management#428 · 5,507 sh | 5,507 | $1.2M | 0.02% | +625.6% |
| 429 | guardian investment management#429 · 5,500 sh | 5,500 | $1.2M | — | 0.0% |
| 430 | Dai-ichi Life Insurance Company, Ltd#430 · 5,397 sh | 5,397 | $1.2M | 0.03% | -7.1% |
| 431 | INDEPENDENT FINANCIAL GROUP#431 · 5,364 sh | 5,364 | $1.2M | — | +61.2% |
| 432 | Lido Advisors#432 · 5,292 sh | 5,292 | $1.1M | <0.01% | +19.4% |
| 433 | Empirical Finance#433 · 5,240 sh | 5,240 | $1.1M | 0.05% | +3.4% |
| 434 | Elevated Private Wealth#434 · 5,234 sh | 5,234 | $1.1M | — | — |
| 435 | Annis Gardner Whiting Capital Advisors#435 · 5,233 sh | 5,233 | $1.1M | 0.17% | +0.8% |
| 436 | Frank, Rimerman Advisors#436 · 5,197 sh | 5,197 | $1.1M | — | +0.1% |
| 437 | World Investment Advisors#437 · 6,038 sh | 6,038 | $1.1M | 0.02% | -0.7% |
| 438 | Williamson Legacy Group#438 · 5,129 sh | 5,129 | $1.1M | 0.55% | New |
| 439 | WILEY BROS.-AINTREE CAPITAL#439 · 5,128 sh | 5,128 | $1.1M | <0.01% | +1.8% |
| 440 | COLDSTREAM CAPITAL MANAGEMENT#440 · 5,115 sh | 5,115 | $1.1M | 0.01% | +9.7% |
| 441 | Lombard Odier Asset Management (Switzerland) SA#441 · 5,099 sh | 5,099 | $1.1M | 0.04% | +30.8% |
| 442 | SIGNATUREFD#442 · 5,094 sh | 5,094 | $1.1M | — | +10.5% |
| 443 | Spears Abacus Advisors#443 · 5,083 sh | 5,083 | $1.1M | 0.02% | +0.1% |
| 444 | Unison Advisors#444 · 5,078 sh | 5,078 | $1.1M | 0.08% | 0.0% |
| 445 | PRUDENTIAL PLC#445 · 4,924 sh | 4,924 | $1.1M | <0.01% | +96.3% |
| 446 | LMR Partners LLP#446 · 4,866 sh | 4,866 | $1.1M | <0.01% | -95.8% |
| 447 | E. Ohman J:or Asset Management AB#447 · 4,819 sh | 4,819 | $1.0M | — | 0.0% |
| 448 | CSM Advisors#448 · 4,815 sh | 4,815 | $1.0M | 0.02% | -9.3% |
| 449 | Sterling Capital Management#449 · 4,810 sh | 4,810 | $1.0M | — | -6.3% |
| 450 | Abacus Wealth Partners#450 · 4,808 sh | 4,808 | $1.0M | 0.11% | -47.5% |
| 451 | Arkadios Wealth Advisors#451 · 4,806 sh | 4,806 | $1.0M | 0.02% | +0.5% |
| 452 | Holocene Advisors#452 · 4,793 sh | 4,793 | $1.0M | <0.01% | 0.0% |
| 453 | NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY#453 · 4,734 sh | 4,734 | $1.0M | 0.01% | +0.8% |
| 454 | Wealthcare Advisory Partners#454 · 4,728 sh | 4,728 | $1.0M | — | -12.3% |
| 455 | Vident Advisory#455 · 4,698 sh | 4,698 | $1.0M | <0.01% | -7.9% |
| 456 | Chicago Partners Investment Group#456 · 5,038 sh | 5,038 | $1.0M | — | +9.6% |
| 457 | J. Safra Sarasin Holding AG#457 · 4,895 sh | 4,895 | $1.0M | — | -2.1% |
| 458 | Meeder Advisory Services#458 · 4,608 sh | 4,608 | $995.6K | 0.04% | -2.4% |
| 459 | EFG International AG#459 · 4,582 sh | 4,582 | $990.0K | 0.02% | +2.8% |
| 460 | Beacon Pointe Advisors#460 · 4,544 sh | 4,544 | $981.1K | <0.01% | +11.3% |
| 461 | GILDER GAGNON HOWE#461 · 4,528 sh | 4,528 | $978.3K | 0.01% | -0.7% |
| 462 | TOCQUEVILLE ASSET MANAGEMENT L.P.#462 · 4,486 sh | 4,486 | $969.2K | 0.01% | +3.1% |
| 463 | TWIN CAPITAL MANAGEMENT#463 · 4,465 sh | 4,465 | $964.7K | 0.11% | +0.8% |
| 464 | MUFG SECURITIES AMERICAS#464 · 4,447 sh | 4,447 | $960.8K | 0.05% | +9.5% |
| 465 | BNP PARIBAS#465 · 4,360 sh | 4,360 | $940.7K | 0.03% | +522.9% |
| 466 | V-Square Quantitative Management#466 · 4,349 sh | 4,349 | $939.6K | — | -0.2% |
| 467 | North Dakota State Investment Board#467 · 4,343 sh | 4,343 | $938.3K | 0.04% | -34.9% |
| 468 | Blackhawk Capital Partners#468 · 4,266 sh | 4,266 | $921.7K | 0.30% | +75.8% |
| 469 | Providence First#469 · 4,175 sh | 4,175 | $902.0K | 0.25% | +35.6% |
| 470 | E Fund Management , Ltd.#470 · 4,174 sh | 4,174 | $901.8K | 0.02% | -19.9% |
| 471 | Frec Markets#471 · 4,158 sh | 4,158 | $898.4K | 0.08% | +58.2% |
| 472 | Parallel Advisors#472 · 4,145 sh | 4,145 | $895.6K | 0.01% | -5.1% |
| 473 | SUMMITRY#473 · 4,137 sh | 4,137 | $893.8K | 0.03% | -12.7% |
| 474 | PINNACLE ASSOCIATES LTD#474 · 4,102 sh | 4,102 | $886.2K | — | +2.6% |
| 475 | INTECH INVESTMENT MANAGEMENT#475 · 4,092 sh | 4,092 | $884.1K | <0.01% | 0.0% |
| 476 | Cohen Klingenstein#476 · 4,000 sh | 4,000 | $864.2K | — | 0.0% |
| 477 | Knott David M Jr#477 · 4,000 sh | 4,000 | $864.2K | 0.46% | 0.0% |
| 478 | Savvy Advisors#478 · 3,996 sh | 3,996 | $863.4K | 0.02% | +3.4% |
| 479 | Texas Yale Capital#479 · 3,987 sh | 3,987 | $861.4K | 0.02% | 0.0% |
| 480 | Connor, Clark & Lunn Investment Management Ltd.#480 · 3,948 sh | 3,948 | $853.0K | <0.01% | New |
| 481 | First County Bank#481 · 3,933 sh | 3,933 | $849.8K | — | -5.6% |
| 482 | AlphaCentric Advisors#482 · 3,891 sh | 3,891 | $840.7K | 0.71% | +1.5% |
| 483 | Savant Capital#483 · 3,896 sh | 3,896 | $839.5K | <0.01% | -39.9% |
| 484 | CHESAPEAKE CAPITAL#484 · 3,879 sh | 3,879 | $838.1K | 0.44% | +9.5% |
| 485 | Sivia Capital Partners#485 · 3,879 sh | 3,879 | $838.1K | 0.10% | +29.2% |
| 486 | FARMERS & MERCHANTS INVESTMENTS#486 · 3,830 sh | 3,830 | $827.5K | — | -2.8% |
| 487 | Kentucky Retirement Systems Insurance Fund#487 · 3,827 sh | 3,827 | $826.9K | 0.05% | -0.4% |
| 488 | Parkside Financial Bank#488 · 3,800 sh | 3,800 | $821.0K | 0.03% | +104.9% |
| 489 | SECURIAN ASSET MANAGEMENT#489 · 3,945 sh | 3,945 | $812.6K | 0.03% | 0.0% |
| 490 | BESSEMER GROUP#490 · 3,701 sh | 3,701 | $799.0K | <0.01% | +18.4% |
| 491 | Wahed Invest#491 · 3,696 sh | 3,696 | $798.6K | 0.08% | +0.6% |
| 492 | Waverly Advisors#492 · 3,678 sh | 3,678 | $794.7K | <0.01% | +16.7% |
| 493 | Jones Kertz & Associates#493 · 3,666 sh | 3,666 | $792.1K | 0.37% | -13.4% |
| 494 | Farther Finance Advisors#494 · 3,649 sh | 3,649 | $788.5K | — | +1.4% |
| 495 | Siemens Fonds Invest GmbH#495 · 3,633 sh | 3,633 | $784.9K | 0.04% | 0.0% |
| 496 | Osmosis Investment Management UK Ltd#496 · 3,629 sh | 3,629 | $784.1K | 0.04% | -45.4% |
| 497 | XXI WEALTH#497 · 3,603 sh | 3,603 | $778.5K | — | -1.3% |
| 498 | Empirical Financial Services, d.b.a. Empirical Wealth Ma#498 · 3,601 sh | 3,601 | $778.0K | 0.01% | +30.9% |
| 499 | Ellevest#499 · 3,573 sh | 3,573 | $772.1K | 0.09% | -9.5% |
| 500 | Atria Investments#500 · 3,573 sh | 3,573 | $772.0K | — | +46.6% |
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.