Illumina, Inc.
US ˙ NasdaqGS ˙ US4523271090

SecurityILMN / Illumina, Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership39,733 shares
Latest Disclosed Value $ 4,897,490
Oppenheimer & Co Inc reports 6.85% decrease in ownership of ILMN / Illumina, Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 39,733 shares of Illumina, Inc. (US:ILMN) valued at $4,897,490 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 42,654 shares of Illumina, Inc.. This represents a change in shares of -6.85% during the quarter. The current value of the position is $6,791,562 USD.

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)
2026-04-23 2026-03-31 13F ILLUMINA COM 452327109 39,733 -2,921 -6.85 4,897 -12.46 0.0596
2026-02-02 2025-12-31 13F ILLUMINA COM 452327109 42,654 479 1.14 5,594 39.68 0.0794
2025-11-06 2025-09-30 13F ILLUMINA COM 452327109 42,175 -74 -0.18 4,005 -0.62 0.0489
2025-07-31 2025-06-30 13F ILLUMINA COM 452327109 42,249 -214 -0.50 4,031 19.62 0.0533
2025-04-23 2025-03-31 13F ILLUMINA COM 452327109 42,463 1,795 4.41 3,369 -38.00 0.0509
2025-02-05 2024-12-31 13F ILLUMINA COM 452327109 40,668 -219 -0.54 5,434 1.91 0.0811
2024-11-05 2024-09-30 13F ILLUMINA COM 452327109 40,887 -10,424 -20.32 5,332 -0.43 0.0813
2024-08-08 2024-06-30 13F ILLUMINA COM 452327109 51,311 -523 -1.01 5,356 -24.76 0.0850
2024-05-07 2024-03-31 13F ILLUMINA COM 452327109 51,834 10,050 24.05 7,118 22.33 0.1180
2024-02-13 2023-12-31 13F ILLUMINA COM 452327109 41,784 -13,821 -24.86 5,818 -23.78 0.1069
2023-11-08 2023-09-30 13F ILLUMINA COM 452327109 55,605 -1,839 -3.20 7,633 -29.13 0.1576
2023-08-03 2023-06-30 13F ILLUMINA COM 452327109 57,444 -95 -0.17 10,770 -19.51 0.2155
2023-05-10 2023-03-31 13F ILLUMINA COM 452327109 57,539 1,188 2.11 13,381 17.43 0.2837
2023-02-08 2022-12-31 13F ILLUMINA COM 452327109 56,351 -5,210 -8.46 11,394 -3.00 0.2594
2022-11-14 2022-09-30 13F ILLUMINA COM 452327109 61,561 -4,599 -6.95 11,746 -3.70 0.2748
2022-08-08 2022-06-30 13F ILLUMINA COM 452327109 66,160 -1,014 -1.51 12,197 -48.03 0.2626
2022-05-12 2022-03-31 13F ILLUMINA COM 452327109 67,174 -1,467 -2.14 23,471 -10.12 0.4231
2022-02-02 2021-12-31 13F ILLUMINA COM 452327109 68,641 -80 -0.12 26,113 -6.32 0.4566
2021-11-12 2021-09-30 13F ILLUMINA COM 452327109 68,721 686 1.01 27,874 -13.42 0.5218
2021-08-03 2021-06-30 13F ILLUMINA COM 452327109 68,035 -398 -0.58 32,195 22.50 0.5770
2021-05-10 2021-03-31 13F ILLUMINA COM 452327109 68,433 -26,647 -28.03 26,282 -25.29 0.5245
2021-02-11 2020-12-31 13F ILLUMINA COM 452327109 95,080 -4,784 -4.79 35,179 13.97 0.7423
2020-11-13 2020-09-30 13F ILLUMINA COM 452327109 99,864 17,412 21.12 30,866 1.08 0.7723
2020-08-11 2020-06-30 13F ILLUMINA COM 452327109 82,452 2,337 2.92 30,536 39.55 0.7901
2020-05-08 2020-03-31 13F ILLUMINA COM 452327109 80,115 -1,603 -1.96 21,881 -19.29 0.6643
2020-02-07 2019-12-31 13F ILLUMINA COM 452327109 81,718 -4,086 -4.76 27,109 3.85 0.6713
2019-10-31 2019-09-30 13F ILLUMINA COM 452327109 85,804 -781 -0.90 26,104 -18.11 0.7112
2019-08-09 2019-06-30 13F ILLUMINA COM 452327109 86,585 -5,253 -5.72 31,876 11.72 0.8662
2019-04-24 2019-03-31 13F ILLUMINA COM 452327109 91,838 -13,425 -12.75 28,533 -9.63 0.7622
2019-01-29 2018-12-31 13F ILLUMINA COM 452327109 105,263 14,141 15.52 31,572 -5.61 0.9871
2018-10-26 2018-09-30 13F ILLUMINA COM 452327109 91,122 1,104 1.23 33,448 33.04 0.8514
2018-08-10 2018-06-30 13F ILLUMINA COM 452327109 90,018 -468 -0.52 25,142 17.53 0.6824
2018-05-01 2018-03-31 13F ILLUMINA COM 452327109 90,486 797 0.89 21,392 9.17 0.5495
2018-02-07 2017-12-31 13F ILLUMINA COM 452327109 89,689 860 0.97 19,596 10.74 0.5044
2017-11-09 2017-09-30 13F ILLUMINA COM 452327109 88,829 1,444 1.65 17,695 16.70 0.4736
2017-08-09 2017-06-30 13F ILLUMINA COM 452327109 87,385 -18,794 -17.70 15,163 -16.31 0.4180
2017-05-15 2017-03-31 13F ILLUMINA COM 452327109 106,179 650 0.62 18,119 34.10 0.5128
2017-02-01 2016-12-31 13F ILLUMINA COM 452327109 105,529 -6,369 -5.69 13,512 -33.53 0.3933
2016-11-07 2016-09-30 13F ILLUMINA COM 452327109 111,898 -1,887 -1.66 20,328 27.26 0.5927
2016-08-08 2016-06-30 13F ILLUMINA COM 452327109 113,785 -152 -0.13 15,973 -13.51 0.4761
2016-04-26 2016-03-31 13F ILLUMINA COM 452327109 113,937 5,438 5.01 18,469 -11.32 0.5608
2016-02-03 2015-12-31 13F ILLUMINA COM 452327109 108,499 -2,926 -2.63 20,826 6.31 0.6197
2015-11-13 2015-09-30 13F ILLUMINA COM 452327109 111,425 3,277 3.03 19,590 -17.04 0.5951
2015-08-12 2015-06-30 13F ILLUMINA COM 452327109 108,148 -21,144 -16.35 23,615 -1.61 0.6569
2015-05-08 2015-03-31 13F ILLUMINA COM 452327109 129,292 2,285 1.80 24,002 2.38 0.6534
2015-02-10 2014-12-31 13F ILLUMINA COM 452327109 127,007 38,129 42.90 23,443 60.92 0.6730
2014-11-12 2014-09-30 13F ILLUMINA COM 452327109 88,878 -1,476 -1.63 14,568 -9.70 0.4333
2014-08-14 2014-06-30 13F ILLUMINA COM 452327109 90,354 -1,291 -1.41 16,132 18.41 0.4854
2014-05-09 2014-03-31 13F ILLUMINA COM 452327109 91,645 -16,503 -15.26 13,624 13.91 0.4085
2014-02-12 2013-12-31 13F ILLUMINA COM 452327109 108,148 1,731 1.63 11,960 39.05 0.3826
2013-11-01 2013-09-30 13F ILLUMINA COM 452327109 106,417 17,588 19.80 8,601 29.38 0.3023
2013-08-14 2013-06-30 13F ILLUMINA COM 452327109 88,829 88,829 6,648 0.2570
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.