Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership2,236,312 shares
Latest Disclosed Value $ 311,674,690
Rhumbline Advisers reports 1.53% decrease in ownership of GILD / Gilead Sciences, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 2,236,312 shares of Gilead Sciences, Inc. (CH:GILD) valued at $311,674,690 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,271,079 shares of Gilead Sciences, Inc.. This represents a change in shares of -1.53% 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)
2026-05-12 2026-03-31 13F GILEAD SCIENCES COM 375558103 2,236,312 -34,767 -1.53 311,675 11.81 0.2666
2026-02-13 2025-12-31 13F GILEAD SCIENCES COM 375558103 2,271,079 -56,787 -2.44 278,752 7.88 0.2254
2025-11-06 2025-09-30 13F GILEAD SCIENCES COM 375558103 2,327,866 -15,602 -0.67 258,393 -0.55 0.2075
2025-08-12 2025-06-30 13F GILEAD SCIENCES COM 375558103 2,343,468 88,328 3.92 259,820 2.82 0.2225
2025-05-29 2025-03-31 13F/A-1 GILEAD SCIENCES COM 375558103 2,255,140 -68,462 -2.95 252,688 17.73 0.2364
2025-04-08 2025-03-31 13F GILEAD SCIENCES COM 375558103 2,255,140 -68,462 252,688 0.2364
2025-05-29 2024-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 2,323,602 -39,739 -1.68 214,631 8.32 0.1920
2025-01-30 2024-12-31 13F GILEAD SCIENCES COM 375558103 2,323,602 -39,739 214,631 0.1920
2024-11-12 2024-09-30 13F GILEAD SCIENCES COM 375558103 2,363,341 -96,159 -3.91 198,142 17.42 0.1787
2024-08-01 2024-06-30 13F GILEAD SCIENCES COM 375558103 2,459,500 -1,038 -0.04 168,746 -6.37 0.1586
2024-05-09 2024-03-31 13F GILEAD SCIENCES COM 375558103 2,460,538 -361,652 -12.81 180,234 -21.17 0.1731
2024-02-08 2023-12-31 13F GILEAD SCIENCES COM 375558103 2,822,190 -39,919 -1.39 228,625 6.59 0.2396
2023-11-09 2023-09-30 13F GILEAD SCIENCES COM 375558103 2,862,109 72,535 2.60 214,486 -0.24 0.2490
2023-08-08 2023-06-30 13F GILEAD SCIENCES COM 375558103 2,789,574 -3,176 -0.11 214,992 92,970.13 0.2408
2023-05-11 2023-03-31 13F GILEAD SCIENCES COM 375558103 2,792,750 55,961 2.04 232 -99.90 0.2859
2023-02-14 2022-12-31 13F GILEAD SCIENCES COM 375558103 2,736,789 42,809 1.59 234,953 41.37 0.3158
2022-11-10 2022-09-30 13F GILEAD SCIENCES COM 375558103 2,693,980 447,874 19.94 166,192 19.71 0.2476
2022-08-11 2022-06-30 13F GILEAD SCIENCES COM 375558103 2,246,106 107,019 5.00 138,832 9.17 0.2026
2022-05-12 2022-03-31 13F GILEAD SCIENCES COM 375558103 2,139,087 34,162 1.62 127,169 -16.80 0.1637
2022-02-10 2021-12-31 13F GILEAD SCIENCES COM 375558103 2,104,925 37,900 1.83 152,839 5.86 0.1873
2021-11-12 2021-09-30 13F GILEAD SCIENCES COM 375558103 2,067,025 -66,949 -3.14 144,382 -1.74 0.1954
2021-08-05 2021-06-30 13F GILEAD SCIENCES COM 375558103 2,133,974 -123,970 -5.49 146,945 0.69 0.1928
2021-05-06 2021-03-31 13F GILEAD SCIENCES COM 375558103 2,257,944 -121,318 -5.10 145,931 5.28 0.1983
2021-02-10 2020-12-31 13F GILEAD SCIENCES COM 375558103 2,379,262 -131,937 -5.25 138,616 -12.65 0.1913
2020-11-12 2020-09-30 13F GILEAD SCIENCES COM 375558103 2,511,199 -7,404 -0.29 158,683 -18.11 0.2487
2020-08-13 2020-06-30 13F GILEAD SCIENCES COM 375558103 2,518,603 271,391 12.08 193,781 15.34 0.3236
2020-05-06 2020-03-31 13F GILEAD SCIENCES COM 375558103 2,247,212 44,892 2.04 168,002 17.40 0.3521
2020-02-05 2019-12-31 13F GILEAD SCIENCES COM 375558103 2,202,320 28,860 1.33 143,107 3.89 0.2393
2019-10-23 2019-09-30 13F GILEAD SCIENCES COM 375558103 2,173,460 42,854 2.01 137,754 -4.30 0.2517
2019-08-14 2019-06-30 13F GILEAD SCIENCES COM 375558103 2,130,606 -12,759 -0.60 143,944 3.30 0.2702
2019-05-01 2019-03-31 13F GILEAD SCIENCES COM 375558103 2,143,365 56,702 2.72 139,340 6.76 0.2698
2019-01-31 2018-12-31 13F GILEAD SCIENCES COM 375558103 2,086,663 1,919 0.09 130,521 -18.91 0.2840
2018-11-07 2018-09-30 13F GILEAD SCIENCES COM 375558103 2,084,744 -31,147 -1.47 160,963 7.39 0.3109
2018-08-06 2018-06-30 13F GILEAD SCIENCES COM 375558103 2,115,891 -230,447 -9.82 149,890 -15.26 0.3023
2018-05-02 2018-03-31 13F GILEAD SCIENCES COM 375558103 2,346,338 -74,481 -3.08 176,890 2.00 0.3695
2018-02-09 2017-12-31 13F GILEAD SCIENCES COM 375558103 2,420,819 100,935 4.35 173,427 -7.73 0.3522
2017-11-06 2017-09-30 13F GILEAD SCIENCES COM 375558103 2,319,884 -8,861 -0.38 187,957 14.03 0.4087
2017-08-02 2017-06-30 13F GILEAD SCIENCES COM 375558103 2,328,745 69,843 3.09 164,829 7.43 0.3762
2017-05-02 2017-03-31 13F GILEAD SCIENCES COM 375558103 2,258,902 46,707 2.11 153,425 -3.15 0.3584
2017-01-27 2016-12-31 13F GILEAD SCIENCES COM 375558103 2,212,195 54,561 2.53 158,415 -7.20 0.4015
2016-11-08 2016-09-30 13F GILEAD SCIENCES COM 375558103 2,157,634 84,832 4.09 170,712 -1.27 0.4704
2016-08-11 2016-06-30 13F GILEAD SCIENCES COM 375558103 2,072,802 -10,650 -0.51 172,913 -9.65 0.5123
2016-05-02 2016-03-31 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,083,452 15,940 0.77 191,386 -8.52 0.5938
2016-02-03 2015-12-31 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,067,512 -15,694 -0.75 209,212 2.28 0.6732
2015-11-04 2015-09-30 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,083,206 23,840 1.16 204,550 -15.16 0.6959
2015-08-04 2015-06-30 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,059,366 -439,849 -17.60 241,111 -1.69 0.7685
2015-05-12 2015-03-31 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,499,215 -56,258 -2.20 245,248 1.81 0.7075
2015-02-06 2014-12-31 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,555,473 -51,463 -1.97 240,879 -13.20 0.6998
2014-11-12 2014-09-30 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,606,936 -65,697 -2.46 277,508 25.24 0.8336
2014-08-06 2014-06-30 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,672,633 -88,811 -3.22 221,588 13.24 0.6503
2014-05-06 2014-03-31 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,761,444 -6,004 -0.22 195,676 -5.91 0.5804
2014-02-03 2013-12-31 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,767,448 -115,316 -4.00 207,974 14.81 0.6135
2013-11-05 2013-09-30 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,882,764 -71,292 -2.41 181,153 19.75 0.5613
2013-08-07 2013-06-30 13F GILEAD SCIENCES INC COMMON STO COM 375558103 2,954,056 2,954,056 151,277 0.4861
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.