BIOGEN INC. (BIIB) — Institutional Holders, Q2 2026 (page 4)
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 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.
BIIB 13F holders ranked 301–400 of 1,048
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 301 | Horizon Investments#301 · 14,307 sh | 14,307 | $3.1M | 0.03% | +0.4% |
| 302 | YOUSIF CAPITAL MANAGEMENT#302 · 14,134 sh | 14,134 | $3.1M | — | -7.0% |
| 303 | GABELLI FUNDS#303 · 14,100 sh | 14,100 | $3.0M | 0.02% | 0.0% |
| 304 | CANADA PENSION PLAN INVESTMENT BOARD#304 · 13,602 sh | 13,602 | $2.9M | <0.01% | -88.2% |
| 305 | OSAIC#305 · 13,479 sh | 13,479 | $2.9M | <0.01% | +12.3% |
| 306 | ALLSTATE#306 · 13,369 sh | 13,369 | $2.9M | 0.03% | -23.8% |
| 307 | Advisors Asset Management#307 · 13,312 sh | 13,312 | $2.9M | 0.04% | +107.0% |
| 308 | Neuberger Berman Group#308 · 13,048 sh | 13,048 | $2.8M | <0.01% | +12.0% |
| 309 | TRIGLAV SKLADI, D.O.O.#309 · 12,976 sh | 12,976 | $2.8M | 0.15% | +4.4% |
| 310 | Pallas Capital Advisors#310 · 12,859 sh | 12,859 | $2.8M | 0.09% | +7.5% |
| 311 | Sivik Global Healthcare#311 · 15,000 sh | 15,000 | $2.8M | — | 0.0% |
| 312 | Merit Financial Group#312 · 12,725 sh | 12,725 | $2.7M | 0.02% | +11.3% |
| 313 | Fideuram Asset Management (Ireland) dac#313 · 13,094 sh | 13,094 | $2.7M | 0.05% | New |
| 314 | TRUIST FINANCIAL#314 · 12,621 sh | 12,621 | $2.7M | <0.01% | +9.1% |
| 315 | MARSHALL WACE, LLP#315 · 12,595 sh | 12,595 | $2.7M | <0.01% | -94.5% |
| 316 | B. Metzler seel. Sohn & AG#316 · 12,258 sh | 12,258 | $2.6M | 0.02% | -58.8% |
| 317 | BEACON INVESTMENT ADVISORY SERVICES#317 · 12,229 sh | 12,229 | $2.6M | — | -0.7% |
| 318 | NATIXIS#318 · 11,907 sh | 11,907 | $2.6M | 0.01% | -47.3% |
| 319 | Avanza Fonder AB#319 · 11,760 sh | 11,760 | $2.5M | — | -19.6% |
| 320 | Turn8 Private Wealth#320 · 12,068 sh | 12,068 | $2.5M | 1.69% | New |
| 321 | COMMERCE BANK#321 · 11,672 sh | 11,672 | $2.5M | 0.01% | +65.0% |
| 322 | PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO#322 · 11,669 sh | 11,669 | $2.5M | <0.01% | 0.0% |
| 323 | Banque Cantonale Vaudoise#323 · 11,496 sh | 11,496 | $2.5M | 0.10% | +45.0% |
| 324 | TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY#324 · 11,437 sh | 11,437 | $2.5M | 0.02% | 0.0% |
| 325 | JANE STREET GROUP#325 · 11,435 sh | 11,435 | $2.5M | <0.01% | +9.2% |
| 326 | Catalyst Funds Management Pty Ltd#326 · 11,400 sh | 11,400 | $2.5M | 0.14% | -4.8% |
| 327 | MACQUARIE GROUP LTD#327 · 11,330 sh | 11,330 | $2.4M | 0.01% | +33.1% |
| 328 | Gulf International Bank (UK) Ltd#328 · 11,183 sh | 11,183 | $2.4M | — | -2.2% |
| 329 | Integrated Wealth Concepts#329 · 11,057 sh | 11,057 | $2.4M | 0.01% | +45.2% |
| 330 | PensionDanmark Pensionsforsikringsaktieselskab#330 · 10,506 sh | 10,506 | $2.3M | — | -4.4% |
| 331 | BI Asset Management Fondsmaeglerselskab A/S#331 · 10,446 sh | 10,446 | $2.3M | — | +32.5% |
| 332 | CenterBook Partners#332 · 10,418 sh | 10,418 | $2.3M | 0.11% | New |
| 333 | Orion Porfolio Solutions#333 · 10,358 sh | 10,358 | $2.2M | 0.02% | +21.9% |
| 334 | Saudi Central Bank#334 · 10,273 sh | 10,273 | $2.2M | 0.03% | +89.7% |
| 335 | Missouri & Investment#335 · 10,795 sh | 10,795 | $2.2M | 0.60% | +4.0% |
| 336 | KENNEDY CAPITAL MANAGEMENT#336 · 10,098 sh | 10,098 | $2.2M | 0.04% | +3.0% |
| 337 | THOR INVESTMENT MANAGEMENT /OH#337 · 10,002 sh | 10,002 | $2.2M | — | +0.8% |
| 338 | Canal Insurance#338 · 10,000 sh | 10,000 | $2.2M | — | -50.0% |
| 339 | K.J. Harrison & Partners#339 · 10,000 sh | 10,000 | $2.2M | 0.31% | 0.0% |
| 340 | Crossmark Global#340 · 9,980 sh | 9,980 | $2.2M | — | +0.2% |
| 341 | Pinnacle Financial Partners#341 · 9,892 sh | 9,892 | $2.1M | 0.01% | -0.3% |
| 342 | GREAT LAKES ADVISORS#342 · 9,477 sh | 9,477 | $2.0M | 0.02% | -0.1% |
| 343 | Sequoia Financial Advisors#343 · 9,388 sh | 9,388 | $2.0M | 0.01% | -5.7% |
| 344 | Investment Management of Ontario#344 · 9,334 sh | 9,334 | $2.0M | 0.03% | -11.4% |
| 345 | BROWN BROTHERS HARRIMAN#345 · 9,312 sh | 9,312 | $2.0M | <0.01% | +48.0% |
| 346 | Norinchukin Bank, The#346 · 9,240 sh | 9,240 | $2.0M | 0.02% | +0.2% |
| 347 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#347 · 9,230 sh | 9,230 | $2.0M | <0.01% | +0.1% |
| 348 | Kentucky Retirement Systems#348 · 9,222 sh | 9,222 | $2.0M | 0.05% | -52.7% |
| 349 | Birchview Capital#349 · 9,000 sh | 9,000 | $1.9M | 0.91% | +80.0% |
| 350 | SIMPLEX TRADING#350 · 8,983 sh | 8,983 | $1.9M | <0.01% | +315.1% |
| 351 | BOKF, NA#351 · 8,918 sh | 8,918 | $1.9M | 0.03% | -8.2% |
| 352 | GLENMEDE NA#352 · 8,786 sh | 8,786 | $1.9M | <0.01% | -24.6% |
| 353 | AUXIER ASSET MANAGEMENT#353 · 8,684 sh | 8,684 | $1.9M | 0.25% | -2.1% |
| 354 | BRIGHTON JONES#354 · 8,636 sh | 8,636 | $1.9M | 0.03% | +7.3% |
| 355 | Sompo Asset Management , Ltd.#355 · 8,596 sh | 8,596 | $1.9M | 0.30% | -2.1% |
| 356 | M&G Plc#356 · 8,593 sh | 8,593 | $1.9M | <0.01% | 0.0% |
| 357 | CI INVESTMENTS#357 · 8,582 sh | 8,582 | $1.9M | <0.01% | +110.4% |
| 358 | PROFUND ADVISORS#358 · 8,560 sh | 8,560 | $1.8M | 0.05% | -28.4% |
| 359 | QUADRANT CAPITAL GROUP#359 · 8,289 sh | 8,289 | $1.8M | — | -49.3% |
| 360 | HARTFORD INVESTMENT MANAGEMENT#360 · 8,140 sh | 8,140 | $1.8M | 0.05% | -3.1% |
| 361 | Cambridge Investment Research Advisors#361 · 8,104 sh | 8,104 | $1.8M | <0.01% | +160.3% |
| 362 | Janney Montgomery Scott#362 · 8,100 sh | 8,100 | $1.8M | <0.01% | New |
| 363 | Cairn Investment Group#363 · 8,043 sh | 8,043 | $1.7M | 0.77% | 0.0% |
| 364 | ABN AMRO INVESTMENT SOLUTIONS#364 · 8,037 sh | 8,037 | $1.7M | — | +34.5% |
| 365 | Allworth Financial#365 · 8,033 sh | 8,033 | $1.7M | <0.01% | +90.8% |
| 366 | Maryland State Retirement & Pension System#366 · 7,843 sh | 7,843 | $1.7M | 0.03% | +10.5% |
| 367 | AG2R LA MONDIALE GESTION D'ACTIFS#367 · 7,838 sh | 7,838 | $1.7M | — | -6.4% |
| 368 | Krilogy Financial#368 · 7,783 sh | 7,783 | $1.7M | — | +2.5% |
| 369 | KEYBANK NATIONAL ASSOCIATION#369 · 7,775 sh | 7,775 | $1.7M | <0.01% | -12.0% |
| 370 | Focus Partners Advisor Solutions#370 · 7,689 sh | 7,689 | $1.7M | 0.01% | -14.7% |
| 371 | Louisiana State Employees Retirement System#371 · 7,500 sh | 7,500 | $1.6M | — | 0.0% |
| 372 | Lighthouse Investment Partners#372 · 7,500 sh | 7,500 | $1.6M | 0.04% | -77.0% |
| 373 | Jacobi Capital Management#373 · 7,462 sh | 7,462 | $1.6M | 0.08% | -2.4% |
| 374 | Generali Investments, Management#374 · 7,437 sh | 7,437 | $1.6M | — | +4.6% |
| 375 | CIBC WORLD MARKET#375 · 7,424 sh | 7,424 | $1.6M | <0.01% | New |
| 376 | HAGER INVESTMENT MANAGEMENT SERVICES#376 · 7,381 sh | 7,381 | $1.6M | 0.73% | New |
| 377 | WHITTIER OF NEVADA#377 · 7,668 sh | 7,668 | $1.6M | 0.03% | -0.7% |
| 378 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT#378 · 7,299 sh | 7,299 | $1.6M | <0.01% | +3.6% |
| 379 | Kathmere Capital Management#379 · 7,285 sh | 7,285 | $1.6M | — | +9.7% |
| 380 | Allspring Global Investments#380 · 7,471 sh | 7,471 | $1.6M | <0.01% | +2.0% |
| 381 | PARK AVENUE SECURITIES#381 · 7,248 sh | 7,248 | $1.6M | — | New |
| 382 | NEW MEXICO EDUCATIONAL RETIREMENT BOARD#382 · 7,224 sh | 7,224 | $1.6M | 0.04% | +5.9% |
| 383 | TWO SIGMA INVESTMENTS#383 · 7,105 sh | 7,105 | $1.5M | <0.01% | -24.8% |
| 384 | Summit Trail Advisors#384 · 7,082 sh | 7,082 | $1.5M | 0.02% | +2.8% |
| 385 | UNITED CAPITAL FINANCIAL ADVISORS#385 · 7,017 sh | 7,017 | $1.5M | <0.01% | +3.4% |
| 386 | Squarepoint Ops#386 · 7,005 sh | 7,005 | $1.5M | <0.01% | -80.6% |
| 387 | Canada Post Registered Pension Plan#387 · 6,973 sh | 6,973 | $1.5M | 0.05% | 0.0% |
| 388 | Kennondale Capital Management#388 · 6,967 sh | 6,967 | $1.5M | 1.00% | 0.0% |
| 389 | GF FUND MANAGEMENT LTD.#389 · 6,957 sh | 6,957 | $1.5M | — | -4.6% |
| 390 | CITIZENS & NORTHERN#390 · 6,943 sh | 6,943 | $1.5M | 0.34% | -2.7% |
| 391 | Laird Norton Wetherby Company#391 · 6,920 sh | 6,920 | $1.5M | 0.03% | +0.3% |
| 392 | STABLEFORD CAPITAL II#392 · 6,912 sh | 6,912 | $1.5M | — | +0.1% |
| 393 | Plato Investment Management Ltd#393 · 6,938 sh | 6,938 | $1.5M | 0.09% | +40.5% |
| 394 | Ascent Group#394 · 6,852 sh | 6,852 | $1.5M | 0.04% | +0.2% |
| 395 | Arrowpoint Investment Partners (Singapore) Pte. Ltd.#395 · 6,838 sh | 6,838 | $1.5M | 0.32% | +45.3% |
| 396 | SIG BROKERAGE#396 · 6,824 sh | 6,824 | $1.5M | 0.03% | +24.1% |
| 397 | BANK OF HAWAII#397 · 6,780 sh | 6,780 | $1.5M | 0.07% | -0.9% |
| 398 | Vise Technologies#398 · 6,627 sh | 6,627 | $1.4M | 0.02% | +22.4% |
| 399 | GREENLEAF#399 · 6,491 sh | 6,491 | $1.4M | 0.01% | +1.9% |
| 400 | Sagewood Asset Management#400 · 6,484 sh | 6,484 | $1.4M | 0.32% | -0.1% |
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.