ILLUMINA INC ILMN
COM · Common Stock · CUSIP 452327109 · ISIN US4523271090
American company that develops systems for the analysis of genetic variation
- SectorTechnology
- IndustryLaboratory Analytical Instruments
- HeadquartersSan Diego, CA
- Founded1998
- Websiteillumina.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($137.4m this quarter). Holder counts are more reliable. Shares outstanding: 151.3m as of 2026-04-24, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $123.19. Options: 21 managers hold calls ($108.9m notional), 19 hold puts ($59.0m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 898 |
| Q4 2022 | 945 |
| Q1 2023 | 949 |
| Q2 2023 | 897 |
| Q3 2023 | 820 |
| Q4 2023 | 813 |
| Q1 2024 | 796 |
| Q2 2024 | 775 |
| Q3 2024 | 808 |
| Q4 2024 | 855 |
| Q1 2025 | 725 |
| Q2 2025 | 740 |
| Q3 2025 | 778 |
| Q4 2025 | 860 |
| Q1 2026 | 849 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 365 | 402 |
| Q3 2024 | 411 | 374 |
| Q4 2024 | 357 | 394 |
| Q1 2025 | 342 | 483 |
| Q2 2025 | 387 | 328 |
| Q3 2025 | 379 | 340 |
| Q4 2025 | 441 | 348 |
| Q1 2026 | 369 | 417 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $757.5m | $107.4m | 0.14 |
| Q3 2025 | $627.6m | $93.6m | 0.15 |
| Q4 2025 | $441.9m | $140.4m | 0.32 |
| Q1 2026 | $108.9m | $59.0m | 0.54 |
Biggest buyers
| WCM INVESTMENT MANAGEMENT, LLC | Added | +1.9m |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | New | +863.7k |
| ALLIANCEBERNSTEIN L.P. | Added | +854.7k |
| JUPITER ASSET MANAGEMENT LTD | Added | +816.4k |
| BlackRock, Inc. | Added | +701.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +494.0k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Added | +463.1k |
| MARSHALL WACE, LLP | Added | +357.9k |
| Southpoint Capital Advisors LP | Added | +349.5k |
| GOLDMAN SACHS GROUP INC | Added | +345.1k |
Biggest sellers
| Capital World Investors | Reduced | -4.6m |
| LOOMIS SAYLES & CO L P | Reduced | -1.2m |
| Swedbank AB | Reduced | -799.8k |
| GUARDCAP ASSET MANAGEMENT Ltd | Reduced | -689.1k |
| MORGAN STANLEY | Reduced | -685.4k |
| AQR CAPITAL MANAGEMENT LLC | Reduced | -445.0k |
| ARK Investment Management LLC | Reduced | -410.9k |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Sold out | -405.2k |
| PointState Capital LP | Reduced | -383.4k |
| UBS Group AG | Reduced | -359.9k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $30.3m245.5k shares |
| CITADEL ADVISORS LLC | Reduced | $16.2m131.4k shares |
| PEAK6 LLC | Reduced | $12.3m100.0k shares |
| IMC-Chicago, LLC | Reduced | $10.9m88.4k shares |
| JANE STREET GROUP, LLC | Reduced | $10.5m85.5k shares |
| Walleye Trading LLC | Added | $9.7m78.4k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $4.1m33.4k shares |
| Alphadyne Asset Management LP | New | $3.8m31.1k shares |
| GROUP ONE TRADING LLC | Reduced | $3.7m30.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.4m19.6k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $19.7m159.7k shares |
| CITADEL ADVISORS LLC | Reduced | $10.4m84.1k shares |
| Twin Tree Management, LP | Added | $8.7m70.8k shares |
| IMC-Chicago, LLC | Reduced | $4.6m37.5k shares |
| JANE STREET GROUP, LLC | Reduced | $2.8m23.1k shares |
| Alphadyne Asset Management LP | New | $2.1m16.7k shares |
| PEAK6 LLC | Reduced | $1.9m15.8k shares |
| Point72 Asset Management, L.P. | Added | $1.9m15.7k shares |
| Walleye Trading LLC | Reduced | $1.9m15.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.3m10.5k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution new · filed 2026-10-07 | 10.7% |
| Capital World Investors 13G · institution -2.9 pts · filed 2026-05-14 | 10.3% |
| BlackRock, Inc. 13G · institution filed 2026-10-27 | 8.9% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 2 | $1.5m | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 1 | $61.1k | 2 | $114.9k | $114.9k |
| Q1 2026 | 1 | $23.6k | 2 | $430.6k | $430.6k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-02-20 | Davies Scott M Chief Legal Officer | Sold plan | $155.2k1.3k shares |
| 2026-02-18 | Leckman Patricia SVP, Chief People Officer | Sold plan | $275.3k2.4k shares |
| 2026-02-09 | Gottlieb Scott Director | Bought | $23.6k200 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.04% of their portfolio | 19.0m $2.3bn | Added +701.9k |
| Capital World Investors 0.26% of their portfolio | 15.5m $1.9bn | Reduced -4.6m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.04% of their portfolio | 6.8m $841.1m | First filing |
| VANGUARD CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 6.6m $812.9m | First filing |
| STATE STREET CORP 0.03% of their portfolio | 6.4m $792.5m | Added +239.2k |
| WCM INVESTMENT MANAGEMENT, LLC 1.63% of their portfolio | 5.9m $715.6m | Added +1.9m |
| AQR CAPITAL MANAGEMENT LLC 0.22% of their portfolio | 4.0m $490.7m | Reduced -445.0k |
| Corvex Management LP 18.77% of their portfolio | 3.8m $472.0m | Unchanged |
| Sessa Capital IM, L.P. 7.68% of their portfolio | 3.3m $403.8m | Reduced -128.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 3.1m $375.1m | Added +182.2k |
| LOOMIS SAYLES & CO L P 0.49% of their portfolio | 2.9m $362.8m | Reduced -1.2m |
| Invesco Ltd. 0.03% of their portfolio | 2.7m $327.6m | Reduced -90.4k |
| JANUS HENDERSON GROUP PLC 0.12% of their portfolio | 2.1m $258.9m | Added +29.1k |
| Southpoint Capital Advisors LP 5.33% of their portfolio | 2.1m $258.8m | Added +349.5k |
| PRIMECAP MANAGEMENT CO/CA/ 0.20% of their portfolio | 2.1m $254.8m | Added +77.6k |
| MORGAN STANLEY 0.01% of their portfolio | 1.8m $227.2m | Reduced -685.4k |
| NORTHERN TRUST CORP 0.03% of their portfolio | 1.6m $194.5m | Added +35.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.04% of their portfolio | 1.6m $192.7m | Reduced -24.3k |
| FMR LLC 0.01% of their portfolio | 1.5m $190.7m | Reduced -147.5k |
| Senvest Management, LLC 6.33% of their portfolio | 1.5m $190.4m | Added +142.7k |
| BAILLIE GIFFORD & CO 0.19% of their portfolio | 1.5m $189.2m | Reduced -91.7k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 1.5m $186.9m | Reduced -325.7k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 1.5m $184.9m | Reduced -123.4k |
| UBS Group AG 0.03% of their portfolio | 1.2m $143.3m | Reduced -359.9k |
| AMERIPRISE FINANCIAL INC 0.03% of their portfolio | 1.2m $142.5m | Reduced -53.1k |
| Legal & General Group Plc 0.03% of their portfolio | 1.1m $141.7m | Added +21.0k |
| ARK Investment Management LLC 1.08% of their portfolio | 1.1m $139.2m | Reduced -410.9k |
| ALLIANCEBERNSTEIN L.P. 0.05% of their portfolio | 1.1m $143.2m | Added +854.7k |
| JUPITER ASSET MANAGEMENT LTD 0.72% of their portfolio | 1.1m $134.1m | Added +816.4k |
| Sumitomo Mitsui Trust Group, Inc. 0.08% of their portfolio | 1.0m $127.7m | Reduced -218.7k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 1.0m $124.6m | Added +256.2k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.04% of their portfolio | 1.0m $127.3m | Added +463.1k |
| PGGM Investments 2.14% of their portfolio | 990.5k $122.1m | Reduced -158.9k |
| NORDEA INVESTMENT MANAGEMENT AB 0.11% of their portfolio | 987.1k $121.1m | Added +42.6k |
| RENAISSANCE TECHNOLOGIES LLC 0.19% of their portfolio | 972.6k $119.9m | Reduced -162.0k |
| VANGUARD FIDUCIARY TRUST CO 0.03% of their portfolio | 944.2k $116.4m | First filing |
| GUARDCAP ASSET MANAGEMENT Ltd 6.28% of their portfolio | 887.5k $109.7m | Reduced -689.1k |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. 1.07% of their portfolio | 863.7k $106.5m | New |
| LETKO, BROSSEAU & ASSOCIATES INC 1.69% of their portfolio | 852.9k $105.1m | Reduced -6.1k |
| FEDERATED HERMES, INC. 0.16% of their portfolio | 816.9k $100.7m | Reduced -19.4k |
| EDMOND DE ROTHSCHILD HOLDING S.A. 1.37% of their portfolio | 767.4k $94.6m | Reduced -253.5k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 755.1k $93.1m | Added +345.1k |
| FIRST TRUST ADVISORS LP 0.06% of their portfolio | 734.6k $90.5m | Reduced -136.0k |
| Amova Asset Management Americas, Inc. 1.26% of their portfolio | 721.5k $88.9m | Reduced -165.3k |
| Thrivent Financial for Lutherans 0.16% of their portfolio | 682.1k $84.1m | Added +81.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 645.7k $79.6m | Added +30.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 624.9k $77.0m | Added +494.0k |
| Quantinno Capital Management LP 0.13% of their portfolio | 617.5k $76.1m | Added +96.6k |
| RHUMBLINE ADVISERS 0.06% of their portfolio | 609.8k $75.2m | Added +7.4k |
| Ilex Capital Partners (UK) LLP 1.84% of their portfolio | 605.3k $74.6m | Added +308.4k |
| BROWN ADVISORY INC 0.12% of their portfolio | 592.4k $73.0m | Added +3.2k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 582.8k $71.8m | Added +18.6k |
| NATIXIS ADVISORS, LLC 0.10% of their portfolio | 561.6k $69.2m | Added +260.6k |
| Patient Capital Management, LLC 2.50% of their portfolio | 544.8k $67.1m | Reduced -31.0k |
| Chevy Chase Trust Holdings, LLC 0.19% of their portfolio | 537.7k $66.3m | Added +70.1k |
| Casdin Capital, LLC 4.95% of their portfolio | 530.0k $65.3m | Reduced -70.0k |
| FRANKLIN RESOURCES INC 0.02% of their portfolio | 528.2k $65.1m | Added +199.3k |
| MARSHALL WACE, LLP 0.07% of their portfolio | 504.4k $62.2m | Added +357.9k |
| STIFEL FINANCIAL CORP 0.05% of their portfolio | 475.3k $58.6m | Added +18.2k |
| Pacer Advisors, Inc. 0.17% of their portfolio | 475.2k $58.6m | Added +11.6k |
| Swiss National Bank 0.03% of their portfolio | 448.5k $55.3m | Added +27.4k |
| Caisse de depot et placement du Quebec 0.09% of their portfolio | 431.8k $53.2m | Added +93.5k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 429.2k $52.9m | Reduced -223.8k |
| CITIGROUP INC 0.03% of their portfolio | 414.5k $51.1m | Added +167.3k |
| M&G PLC 0.26% of their portfolio | 411.7k $50.6m | Reduced -16.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 399.3k $49.2m | Reduced -97.5k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 396.5k $48.9m | Added +84.5k |
| ION Fund Management Ltd 7.34% of their portfolio | 390.2k $48.1m | Added +58.2k |
| Stephens Investment Management Group LLC 0.66% of their portfolio | 389.4k $48.0m | Added +46.8k |
| KEYBANK NATIONAL ASSOCIATION/OH 0.17% of their portfolio | 375.7k $46.3m | Reduced -42.3k |
| Amundi 0.01% of their portfolio | 352.0k $43.4m | Added +44.3k |
| IEQ CAPITAL, LLC 0.20% of their portfolio | 348.9k $43.0m | Reduced -52.8k |
| Gotham Asset Management, LLC 0.13% of their portfolio | 341.9k $42.1m | Added +26.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 341.2k $42.1m | Added +12.6k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 336.8k $41.5m | Reduced -74.7k |
| California Public Employees Retirement System 0.03% of their portfolio | 334.1k $41.2m | Added +3.5k |
| Diamond Hill Capital Management, LLC (Investment Advisor) 0.26% of their portfolio | 332.4k $41.0m | Added +5.1k |
| Douglas Lane & Associates, LLC 0.58% of their portfolio | 327.2k $40.3m | Reduced -6.4k |
| SAMLYN CAPITAL, LLC 0.69% of their portfolio | 326.0k $40.2m | New |
| Spyglass Capital Management LLC 2.84% of their portfolio | 325.0k $40.1m | Reduced -76.5k |
| CIBC Bancorp USA Inc. 0.05% of their portfolio | 323.8k $39.7m | First filing |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 319.7k $39.4m | Reduced -49.2k |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.29% of their portfolio | 316.5k $39.0m | Reduced -31.5k |
| Nuveen, LLC 0.01% of their portfolio | 314.9k $38.8m | Reduced -93.0k |
| Meridiem Capital Partners LP 2.54% of their portfolio | 313.3k $38.6m | Added +210.4k |
| LMR Partners LLP 0.35% of their portfolio | 311.0k $38.3m | New |
| Triple Frond Partners LLC 3.92% of their portfolio | 306.5k $37.8m | Reduced -67.7k |
| Alyeska Investment Group, L.P. 0.11% of their portfolio | 306.4k $37.8m | New |
| PANAGORA ASSET MANAGEMENT INC 0.14% of their portfolio | 301.8k $37.2m | Added +299.3k |
| OVERSEA-CHINESE BANKING Corp Ltd 1.00% of their portfolio | 274.6k $33.8m | Added +1.7k |
| ASR Vermogensbeheer N.V. 0.39% of their portfolio | 269.0k $33.2m | Added +523 |
| VANGUARD ASSET MANAGEMENT, Ltd 0.03% of their portfolio | 267.0k $32.9m | First filing |
| Pictet Asset Management Holding SA 0.03% of their portfolio | 266.2k $32.3m | Reduced -36.2k |
| Woodline Partners LP 0.12% of their portfolio | 262.6k $32.4m | Added +260.3k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.02% of their portfolio | 246.6k $30.4m | Added +62.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 236.6k $29.2m | Reduced -4.8k |
| EXCHANGE TRADED CONCEPTS, LLC 0.22% of their portfolio | 234.1k $28.9m | Added +38.7k |
| OSTRUM ASSET MANAGEMENT 1.59% of their portfolio | 230.3k $28.4m | Added +228.9k |
| BRAIDWELL LP 0.94% of their portfolio | 229.2k $28.3m | Reduced -40.5k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.11% of their portfolio | 223.2k $27.5m | Added +218.2k |