Illumina, Inc.
MX ˙ BMV ˙ US4523271090
SecurityMX:ILMN / Illumina, Inc.
InstitutionBaird Financial Group, Inc.
Latest Disclosed Ownership213,519 shares
Latest Disclosed Value $ 26,318,353
Baird Financial Group, Inc. reports 8.24% decrease in ownership of ILMN / Illumina, Inc.

On May 14, 2026 - Baird Financial Group, Inc. filed a 13F-HR form disclosing ownership of 213,519 shares of Illumina, Inc. (MX:ILMN) valued at $26,318,353 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 232,686 shares of Illumina, Inc.. This represents a change in shares of -8.24% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ILLUMINA COM 452327109 213,519 -19,167 -8.24 26,318 -13.77 0.0221
2026-02-13 2025-12-31 13F ILLUMINA INC COM COMMON 452327109 232,686 -51,055 -17.99 30,519 13.26 0.0476
2025-11-13 2025-09-30 13F ILLUMINA COMMON 452327109 283,741 -77,302 -21.41 26,947 -21.78 0.0433
2025-08-13 2025-06-30 13F ILLUMINA INC COM COMMON 452327109 361,043 -51,305 -12.44 34,447 5.29 0.0604
2025-05-15 2025-03-31 13F ILLUMINA INC COM COMMON 452327109 412,348 383,409 1,324.89 32,716 746.00 0.0630
2025-02-14 2024-12-31 13F ILLUMINA COMMON 452327109 28,939 -1,029 -3.43 3,867 -1.05 0.0074
2024-11-14 2024-09-30 13F ILLUMINA INC COM COMMON 452327109 29,968 -6,712 -18.30 3,908 2.09 0.0076
2024-08-14 2024-06-30 13F ILLUMINA COMMON 452327109 36,680 690 1.92 3,829 -22.54 0.0079
2024-05-14 2024-03-31 13F ILLUMINA COMMON 452327109 35,990 -61,681 -63.15 4,942 -63.66 0.0104
2024-02-14 2023-12-31 13F ILLUMINA COMMON 452327109 97,671 11,914 13.89 13,600 15.52 0.0310
2023-11-13 2023-09-30 13F ILLUMINA COMMON 452327109 85,757 41,911 95.59 11,773 43.21 0.0321
2023-08-11 2023-06-30 13F ILLUMINA COMMON 452327109 43,846 -31,203 -41.58 8,220 -52.90 0.0217
2023-05-15 2023-03-31 13F ILLUMINA COMMON 452327109 75,049 889 1.20 17,453 124,557.14 0.0431
2023-02-13 2022-12-31 13F ILLUMINA COMMON 452327109 74,160 6,146 9.04 15 -99.89 0.0395
2022-11-15 2022-09-30 13F ILLUMINA COMMON 452327109 68,014 8,751 14.77 12,978 18.78 0.0382
2022-08-08 2022-06-30 13F ILLUMINA COMMON 452327109 59,263 10,320 21.09 10,926 -36.14 0.0303
2022-05-13 2022-03-31 13F ILLUMINA COMMON 452327109 48,943 4,548 10.24 17,108 1.29 0.0423
2022-02-09 2021-12-31 13F ILLUMINA INC COM COMMON 452327109 44,395 10,026 29.17 16,890 21.16 0.0395
2021-11-12 2021-09-30 13F ILLUMINA INC COM COMMON 452327109 34,369 -3,083 -8.23 13,940 -21.35 0.0357
2021-08-11 2021-06-30 13F ILLUMINA INC COM COMMON 452327109 37,452 9,281 32.95 17,723 63.81 0.0461
2021-05-13 2021-03-31 13F ILLUMINA INC COM COMMON 452327109 28,171 -8,195 -22.53 10,819 -19.57 0.0303
2021-02-11 2020-12-31 13F ILLUMINA INC COM COMMON 452327109 36,366 30,140 484.10 13,452 599.17 0.0402
2020-11-12 2020-09-30 13F ILLUMINA INC COM COMMON 452327109 6,226 383 6.55 1,924 402.35 0.0066
2020-10-22 2020-06-30 13F/A-1 ILLUMINA INC COM COMMON 452327109 5,843 482 8.99 383 -73.84 0.0014
2020-08-14 2020-06-30 13F ILLUMINA INC COM COMMON 452327109 6,310 949 500 990.8864
2020-05-14 2020-03-31 13F ILLUMINA INC COM COMMON 452327109 5,361 166 3.20 1,464 -15.03 0.0067
2020-02-14 2019-12-31 13F ILLUMINA INC COM COMMON 452327109 5,195 -1,494 -22.34 1,723 340.66 0.0062
2019-11-14 2019-09-30 13F ILLUMINA Common 452327109 6,689 -21,622 -76.37 391 -96.25 0.0015
2019-08-14 2019-06-30 13F ILLUMINA COMMON 452327109 28,311 3,381 13.56 10,424 34.59 0.0405
2019-05-14 2019-03-31 13F ILLUMINA COMMON 452327109 24,930 1,031 4.31 7,745 8.03 0.0453
2019-02-14 2018-12-31 13F ILLUMINA COMMON 452327109 23,899 735 3.17 7,169 -15.60 0.0487
2018-11-13 2018-09-30 13F Illumina COMMON 452327109 23,164 1,517 7.01 8,494 40.49 0.0532
2018-08-13 2018-06-30 13F ILLUMINA COMMON 452327109 21,647 -98,306 -81.95 6,046 -78.68 0.0410
2018-05-14 2018-03-31 13F ILLUMINA COMMON 452327109 119,953 -6,037 -4.79 28,360 3.02 0.1997
2018-02-09 2017-12-31 13F ILLUMINA COMMON 452327109 125,990 -126,383 -50.08 27,528 -45.24 0.1950
2017-11-14 2017-09-30 13F ILLUMINA COMMON 452327109 252,373 -12,047 -4.56 50,272 9.57 0.3792
2017-08-14 2017-06-30 13F ILLUMINA COMMON 452327109 264,420 -14,700 -5.27 45,882 -3.67 0.3595
2017-06-19 2017-03-31 13F/A-1 ILLUMINA COMMON 452327109 279,120 256,061 1,110.46 47,629 1,513.45 0.3852
2017-05-09 2017-03-31 13F ILLUMINA COMMON 452327109 279,120 47,629
2017-02-10 2016-12-31 13F ILLUMINA COMMON 452327109 23,059 3,629 18.68 2,952 -16.37 0.0256
2016-11-10 2016-09-30 13F ILLUMINA COMMON 452327109 19,430 -34,442 -63.93 3,530 -53.34 0.0316
2016-08-11 2016-06-30 13F ILLUMINA COMMON 452327109 53,872 8,002 17.44 7,566 1.75 0.0694
2016-05-12 2016-03-31 13F ILLUMINA COMMON 452327109 45,870 34,999 321.95 7,436 256.30 0.0711
2016-02-11 2015-12-31 13F ILLUMINA COMMON 452327109 10,871 -115 -1.05 2,087 8.02 0.0209
2015-11-12 2015-09-30 13F ILLUMINA COMMON 452327109 10,986 296 2.77 1,932 -17.22 0.0205
2015-08-14 2015-06-30 13F ILLUMINA COMMON 452327109 10,690 10,690 2,334 0.0230
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.