Gilead Sciences, Inc.
US ˙ NasdaqGS ˙ US3755581036

SecurityGILD / Gilead Sciences, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership4,255,122 shares
Latest Disclosed Value $ 593,123,623
Boston Partners reports 0.82% increase in ownership of GILD / Gilead Sciences, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 4,255,122 shares of Gilead Sciences, Inc. (US:GILD) valued at $593,036,353 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 4,220,501 shares of Gilead Sciences, Inc.. This represents a change in shares of 0.82% during the quarter. The current value of the position is $548,868,187 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)
2026-05-11 2026-03-31 13F GILEAD SCIENCES COM 375558103 4,255,122 34,621 0.82 593,124 14.54 0.2655
2026-02-13 2025-12-31 13F GILEAD SCIENCES COM 375558103 4,220,501 4,220,501 517,808 0.5361
2021-02-10 2020-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 0 -4,456 -100.00 0 -100.00
2020-11-13 2020-09-30 13F/A-1 GILEAD SCIENCES COM 375558103 4,456 -20,521 -82.16 282 -85.33 0.0005
2020-11-09 2020-09-30 13F GILEAD SCIENCES COM 375558103 24,977 0 1,922 1,410.9770
2020-08-12 2020-06-30 13F GILEAD SCIENCES COM 375558103 24,977 -986,335 -97.53 1,922 -97.46 0.0035
2020-05-13 2020-03-31 13F GILEAD SCIENCES COM 375558103 1,011,312 -987,324 -49.40 75,585 -41.80 0.1501
2020-02-06 2019-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 1,998,636 -211,567 -9.57 129,875 -7.30 0.1718
2020-02-05 2019-12-31 13F GILEAD SCIENCES COM 375558103 1,998,636 -211,567 129,875 73,019.5182
2019-11-20 2019-09-30 13F/A-1 GILEAD SCIENCES COM 375558103 2,210,203 -122,328 -5.24 140,103 -11.10 0.1897
2019-11-08 2019-09-30 13F GILEAD SCIENCES COM 375558103 2,332,524 -7 157,521 0.2083
2019-08-26 2019-06-30 13F/A-1 GILEAD SCIENCES COM 375558103 2,332,531 -3,572,977 -60.50 157,594 -58.95 0.2067
2019-08-09 2019-06-30 13F GILEAD SCIENCES COM 375558103 2,332,531 -3,572,977 157,594
2019-05-13 2019-03-31 13F/A-1 GILEAD SCIENCES COM 375558103 5,905,508 -2,113,207 -26.35 383,917 -23.46 0.5087
2019-05-03 2019-03-31 13F GILEAD SCIENCES COM 375558103 5,905,508 -2,113,207 383,917
2019-02-07 2018-12-31 13F GILEAD SCIENCES COM 375558103 8,018,715 -360,174 -4.30 501,571 -22.47 0.7207
2018-11-14 2018-09-30 13F GILEAD SCIENCES COM 375558103 8,378,889 88,382 1.07 646,934 10.15 0.7517
2018-08-03 2018-06-30 13F GILEAD SCIENCES COM 375558103 8,290,507 245,805 3.06 587,300 -3.16 0.7039
2018-05-04 2018-03-31 13F GILEAD SCIENCES COM 375558103 8,044,702 272,304 3.50 606,490 8.92 0.7313
2018-02-14 2017-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 7,772,398 -2,652,391 -25.44 556,815 -34.07 0.6560
2018-02-01 2017-12-31 13F GILEAD SCIENCES COM 375558103 7,772,398 -2,652,391 556,815
2017-11-02 2017-09-30 13F GILEAD SCIENCES COM 375558103 10,424,789 586,687 5.96 844,617 21.29 1.0436
2017-08-02 2017-06-30 13F GILEAD SCIENCES COM 375558103 9,838,102 -379,895 -3.72 696,340 0.34 0.8855
2017-05-03 2017-03-31 13F GILEAD SCIENCES COM 375558103 10,217,997 -185,485 -1.78 694,007 -6.84 0.8862
2017-02-06 2016-12-31 13F GILEAD SCIENCES COM 375558103 10,403,482 547,800 5.56 744,994 -4.46 0.9796
2016-11-09 2016-09-30 13F GILEAD SCIENCES COM 375558103 9,855,682 3,358,289 51.69 779,781 43.87 1.0903
2016-08-05 2016-06-30 13F GILEAD SCIENCES COM 375558103 6,497,393 -92,107 -1.40 542,013 -10.46 0.7832
2016-05-12 2016-03-31 13F GILEAD SCIENCES COM 375558103 6,589,500 -253,682 -3.71 605,312 -12.59 0.8916
2016-02-08 2015-12-31 13F GILEAD SCIENCES COM 375558103 6,843,182 93,588 1.39 692,462 4.48 0.9919
2015-11-10 2015-09-30 13F GILEAD SCIENCES COM 375558103 6,749,594 2,001,429 42.15 662,743 19.22 1.0102
2015-08-10 2015-06-30 13F GILEAD SCIENCES COM 375558103 4,748,165 501,586 11.81 555,914 33.40 0.7986
2015-05-05 2015-03-31 13F GILEAD SCIENCES COM 375558103 4,246,579 2,694,732 173.65 416,717 184.88 0.6204
2015-02-09 2014-12-31 13F GILEAD SCIENCES COM 375558103 1,551,847 1,551,847 146,277 0.2195
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.