Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership7,956 shares
Latest Disclosed Value $ 1,108,846
Advisor OS, LLC reports 39.75% increase in ownership of GILD / Gilead Sciences, Inc.

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 7,956 shares of Gilead Sciences, Inc. (CH:GILD) valued at $1,108,846 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 5,693 shares of Gilead Sciences, Inc.. This represents a change in shares of 39.75% 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)
2026-05-07 2026-03-31 13F GILEAD SCIENCES COM 375558103 7,956 2,263 39.75 1,109 58.74 0.0312
2026-02-04 2025-12-31 13F GILEAD SCIENCES COM 375558103 5,693 453 8.65 699 20.14 0.0206
2025-11-12 2025-09-30 13F GILEAD SCIENCES COM 375558103 5,240 -369 -6.58 582 -6.44 0.0502
2025-08-14 2025-06-30 13F GILEAD SCIENCES COM 375558103 5,609 -652 -10.41 622 -11.41 0.0612
2025-05-06 2025-03-31 13F GILEAD SCIENCES COM 375558103 6,261 1,124 21.88 702 47.89 0.0798
2025-02-05 2024-12-31 13F GILEAD SCIENCES COM 375558103 5,137 566 12.38 474 23.76 0.0549
2024-11-04 2024-09-30 13F GILEAD SCIENCES COM 375558103 4,571 672 17.24 383 43.45 0.0381
2024-08-05 2024-06-30 13F GILEAD SCIENCES COM 375558103 3,899 -72 -1.81 267 -7.93 0.0293
2024-05-09 2024-03-31 13F GILEAD SCIENCES COM 375558103 3,971 242 6.49 291 -3.97 0.0334
2024-02-08 2023-12-31 13F GILEAD SCIENCES COM 375558103 3,729 174 4.89 302 13.53 0.0393
2023-11-03 2023-09-30 13F GILEAD SCIENCES COM 375558103 3,555 -8,466 -70.43 266 -71.27 0.0399
2023-08-08 2023-06-30 13F GILEAD SCIENCES COM 375558103 12,021 -7,353 -37.95 926 -42.38 0.1516
2023-04-25 2023-03-31 13F GILEAD SCIENCES COM 375558103 19,374 -604 -3.02 1,607 -6.30 0.3859
2023-02-01 2022-12-31 13F GILEAD SCIENCES COM 375558103 19,978 4,264 27.14 1,715 76.80 0.4555
2022-11-04 2022-09-30 13F GILEAD SCIENCES COM 375558103 15,714 1,115 7.64 970 7.54 0.2924
2022-08-02 2022-06-30 13F GILEAD SCIENCES COM 375558103 14,599 5,311 57.18 902 63.41 0.2632
2022-05-11 2022-03-31 13F GILEAD SCIENCES COM 375558103 9,288 2,729 41.61 552 15.72 0.1598
2022-02-04 2021-12-31 13F GILEAD SCIENCES COM 375558103 6,559 6,559 477 0.0973
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.