Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionWright Investors Service Inc
Latest Disclosed Ownership56,272 shares
Latest Disclosed Value $ 7,842,629
Wright Investors Service Inc reports 1.71% decrease in ownership of GILD / Gilead Sciences, Inc.

On April 29, 2026 - Wright Investors Service Inc filed a 13F-HR form disclosing ownership of 56,272 shares of Gilead Sciences, Inc. (CH:GILD) valued at $7,842,629 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 57,253 shares of Gilead Sciences, Inc.. This represents a change in shares of -1.71% 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)
2026-04-29 2026-03-31 13F GILEAD SCIENCES COM 375558103 56,272 -981 -1.71 7,843 11.60 2.4685
2026-01-26 2025-12-31 13F GILEAD SCIENCES COM 375558103 57,253 629 1.11 7,027 11.81 2.1097
2025-10-28 2025-09-30 13F GILEAD SCIENCES COM 375558103 56,624 5,677 11.14 6,285 11.28 1.8198
2025-07-11 2025-06-30 13F GILEAD SCIENCES COM 375558103 50,947 282 0.56 5,648 -0.51 1.7050
2025-04-09 2025-03-31 13F GILEAD SCIENCES COM 375558103 50,665 2,484 5.16 5,677 27.57 1.8765
2025-01-13 2024-12-31 13F GILEAD SCIENCES COM 375558103 48,181 -15,942 -24.86 4,450 -17.22 1.4452
2024-10-04 2024-09-30 13F GILEAD SCIENCES COM 375558103 64,123 10,631 19.87 5,376 46.49 1.4070
2024-07-26 2024-06-30 13F GILEAD SCIENCES COM 375558103 53,492 28,218 111.65 3,670 98.27 0.9666
2024-05-02 2024-03-31 13F GILEAD SCIENCES COM 375558103 25,274 42 0.17 1,851 -9.44 0.4693
2024-01-31 2023-12-31 13F GILEAD SCIENCES COM 375558103 25,232 -1,167 -4.42 2,044 3.34 0.5758
2023-10-31 2023-09-30 13F GILEAD SCIENCES COM 375558103 26,399 -233 -0.87 1,978 -3.61 0.5737
2023-07-27 2023-06-30 13F GILEAD SCIENCES COM 375558103 26,632 3,552 15.39 2,053 7.21 0.5786
2023-04-26 2023-03-31 13F GILEAD SCIENCES COM 375558103 23,080 1,013 4.59 1,915 1.06 0.5443
2023-01-27 2022-12-31 13F GILEAD SCIENCES COM 375558103 22,067 1,160 5.55 1,894 46.82 0.5431
2022-11-01 2022-09-30 13F GILEAD SCIENCES COM 375558103 20,907 226 1.09 1,290 0.94 0.4054
2022-08-02 2022-06-30 13F GILEAD SCIENCES COM 375558103 20,681 11,421 123.34 1,278 131.94 0.3651
2022-04-22 2022-03-31 13F GILEAD SCIENCES COM 375558103 9,260 81 0.88 551 -17.27 0.1369
2022-01-27 2021-12-31 13F GILEAD SCIENCES COM 375558103 9,179 435 4.97 666 9.00 0.1684
2021-11-01 2021-09-30 13F GILEAD SCIENCES COM 375558103 8,744 209 2.45 611 3.91 0.1736
2021-08-03 2021-06-30 13F GILEAD SCIENCES COM 375558103 8,535 992 13.15 588 20.49 0.1595
2021-04-29 2021-03-31 13F GILEAD SCIENCES COM 375558103 7,543 108 1.45 488 12.70 0.1478
2021-02-02 2020-12-31 13F GILEAD SCIENCES COM 375558103 7,435 -14,318 -65.82 433 -68.51 0.1487
2020-11-06 2020-09-30 13F GILEAD SCIENCES COM 375558103 21,753 534 2.52 1,375 -15.80 0.4892
2020-07-23 2020-06-30 13F GILEAD SCIENCES COM 375558103 21,219 -412 -1.90 1,633 0.99 0.6267
2020-04-30 2020-03-31 13F GILEAD SCIENCES COM 375558103 21,631 147 0.68 1,617 15.83 0.6966
2020-01-28 2019-12-31 13F GILEAD SCIENCES COM 375558103 21,484 -12,749 -37.24 1,396 -35.64 0.4780
2019-11-01 2019-09-30 13F GILEAD SCIENCES COM 375558103 34,233 -10,727 -23.86 2,169 -28.58 0.7790
2019-08-01 2019-06-30 13F GILEAD SCIENCES COM 375558103 44,960 32,110 249.88 3,037 263.71 1.1571
2019-04-24 2019-03-31 13F GILEAD SCIENCES COM 375558103 12,850 258 2.05 835 5.96 0.3374
2019-02-01 2018-12-31 13F GILEAD SCIENCES COM 375558103 12,592 1,471 13.23 788 -8.27 0.3376
2018-10-25 2018-09-30 13F GILEAD SCIENCES COM 375558103 11,121 -128 -1.14 859 7.78 0.3143
2018-08-02 2018-06-30 13F GILEAD SCIENCES COM 375558103 11,249 -31,986 -73.98 797 -75.54 0.3167
2018-04-25 2018-03-31 13F GILEAD SCIENCES COM 375558103 43,235 -11 -0.03 3,259 5.20 1.1206
2018-01-30 2017-12-31 13F GILEAD SCIENCES COM 375558103 43,246 -2,306 -5.06 3,098 -16.07 1.0370
2017-10-30 2017-09-30 13F GILEAD SCIENCES COM 375558103 45,552 8,406 22.63 3,691 40.40 1.3430
2017-07-21 2017-06-30 13F GILEAD SCIENCES COM 375558103 37,146 4,310 13.13 2,629 17.89 0.9934
2017-04-28 2017-03-31 13F GILEAD SCIENCES COM 375558103 32,836 5,611 20.61 2,230 14.36 0.9029
2017-01-27 2016-12-31 13F GILEAD SCIENCES COM 375558103 27,225 -1,160 -4.09 1,950 -13.18 0.8448
2016-10-20 2016-09-30 13F GILEAD SCIENCES COM 375558103 28,385 7,080 33.23 2,246 26.39 0.9371
2016-08-01 2016-06-30 13F GILEAD SCIENCES COM 375558103 21,305 -13,365 -38.55 1,777 -44.21 0.7309
2016-04-25 2016-03-31 13F GILEAD SCIENCES COM 375558103 34,670 7,045 25.50 3,185 13.95 1.2612
2016-01-27 2015-12-31 13F GILEAD SCIENCES COM 375558103 27,625 4,110 17.48 2,795 21.05 1.0319
2015-10-27 2015-09-30 13F GILEAD SCIENCES COM 375558103 23,515 10,921 86.72 2,309 56.54 1.0438
2015-07-28 2015-06-30 13F GILEAD SCIENCES COM 375558103 12,594 -1,743 -12.16 1,475 4.83 0.7034
2015-04-24 2015-03-31 13F GILEAD SCIENCES COM 375558103 14,337 14,337 0.00 1,407 0.6764
2015-02-04 2014-12-31 13F GILEAD SCIENCES COM 375558103 0 -7,621 -100.00 0 -100.00
2014-10-14 2014-09-30 13F GILEAD SCIENCES COM 375558103 7,621 1,191 18.52 811 52.16 0.4004
2014-07-22 2014-06-30 13F GILEAD SCIENCES COM 375558103 6,430 96 1.52 533 18.71 0.2409
2014-04-24 2014-03-31 13F GILEAD SCIENCES COM 375558103 6,334 -4,775 -42.98 449 -46.16 0.2017
2014-01-28 2013-12-31 13F GILEAD SCIENCES COM 375558103 11,109 -8,895 -44.47 834 -33.70 0.3677
2013-10-17 2013-09-30 13F Gilead Sciences COM 375558103 20,004 -4,736 -19.14 1,258 -0.79 0.5698
2013-07-30 2013-06-30 13F Gilead Sciences COM 375558103 24,740 24,740 1,268 0.5995
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.