Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionMoors & Cabot, Inc.
Latest Disclosed Ownership18,681 shares
Latest Disclosed Value $ 2,603,547
Moors & Cabot, Inc. ownership in GILD / Gilead Sciences, Inc.

On May 8, 2026 - Moors & Cabot, Inc. filed a 13F-HR form disclosing ownership of 18,681 shares of Gilead Sciences, Inc. (CH:GILD) valued at $2,603,547 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 20,407 shares of Gilead Sciences, Inc.. This represents a change in shares of -8.46% during the quarter.

Moors & Cabot, Inc. has a history of taking positions in derivatives of the underlying security (GILD) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CH:GILD / Gilead Sciences, Inc. Historical Put/Call Ratio
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)
2026-05-08 2026-03-31 13F GILEAD SCIENCES COM 375558103 18,681 -1,726 -8.46 2,604 3.95 0.1115
2026-02-10 2025-12-31 13F GILEAD SCIENCES COM 375558103 20,407 946 4.86 2,505 15.93 0.1072
2025-11-14 2025-09-30 13F GILEAD SCIENCES COM 375558103 19,461 -1,992 -9.29 2,160 -9.17 0.0943
2025-08-06 2025-06-30 13F GILEAD SCIENCES COM 375558103 21,453 -1,346 -5.90 2,379 -6.89 0.1105
2025-05-08 2025-03-31 13F GILEAD SCIENCES COM 375558103 22,799 -274 -1.19 2,555 19.85 0.1296
2025-02-07 2024-12-31 13F GILEAD SCIENCES COM 375558103 23,073 -80 -0.35 2,131 9.79 0.1013
2024-11-08 2024-09-30 13F GILEAD SCIENCES COM 375558103 23,153 -192 -0.82 1,941 21.24 0.0964
2024-08-09 2024-06-30 13F GILEAD SCIENCES COM 375558103 23,345 -1,454 -5.86 1,602 -11.84 0.0853
2024-05-08 2024-03-31 13F GILEAD SCIENCES COM 375558103 24,799 3,220 14.92 1,817 3.89 0.0985
2024-02-14 2023-12-31 13F GILEAD SCIENCES COM 375558103 21,579 -235 -1.08 1,748 6.98 0.1089
2023-11-08 2023-09-30 13F GILEAD SCIENCES COM 375558103 21,814 -1,482 -6.36 1,635 -8.97 0.1108
2023-08-10 2023-06-30 13F GILEAD SCIENCES COM 375558103 23,296 -701 -2.92 1,795 -9.84 0.1192
2023-05-05 2023-03-31 13F GILEAD SCIENCES COM 375558103 23,997 -3,294 -12.07 1,991 -14.99 0.1369
2023-02-10 2022-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 27,291 -8,622 -24.01 2,343 5.73 0.1633
2023-02-07 2022-12-31 13F GILEAD SCIENCES COM 375558103 29,370 -6,543 2,133 0.1421
2022-11-08 2022-09-30 13F GILEAD SCIENCES COM 375558103 35,913 2,558 7.67 2,215 7.42 0.1688
2022-08-08 2022-06-30 13F GILEAD SCIENCES COM 375558103 33,355 123 0.37 2,062 4.35 0.1483
2022-05-13 2022-03-31 13F GILEAD SCIENCES COM 375558103 33,232 3,408 11.43 1,976 -8.77 0.1216
2022-02-14 2021-12-31 13F GILEAD SCIENCES COM 375558103 29,824 -2,540 -7.85 2,166 -4.07 0.1332
2021-12-08 2021-09-30 13F/A-1 GILEAD SCIENCES COM 375558103 32,364 660 2.08 2,258 3.44 0.1419
2021-08-10 2021-06-30 13F GILEAD SCIENCES COM 375558103 31,704 1,360 4.48 2,183 11.43 0.1531
2021-05-12 2021-03-31 13F GILEAD SCIENCES COM 375558103 30,344 -96 -0.32 1,959 10.68 0.1500
2021-02-11 2020-12-31 13F GILEAD SCIENCES COM 375558103 30,440 -1,685 -5.25 1,770 -12.81 0.1488
2020-11-09 2020-09-30 13F GILEAD SCIENCES COM 375558103 32,125 1,918 6.35 2,030 -12.76 0.1910
2020-08-13 2020-06-30 13F GILEAD SCIENCES COM 375558103 30,207 6,551 27.69 2,327 32.22 0.2478
2020-05-12 2020-03-31 13F GILEAD SCIENCES COM 375558103 23,656 800 3.50 1,760 19.24 0.2557
2020-01-28 2019-12-31 13F GILEAD SCIENCES COM 375558103 22,856 -2,542 -10.01 1,476 -8.38 0.1482
2019-10-22 2019-09-30 13F GILEAD SCIENCES COM 375558103 25,398 4,167 19.63 1,611 12.03 0.1775
2019-07-18 2019-06-30 13F GILEAD SCIENCES COM 375558103 21,231 6,630 45.41 1,438 50.73 0.1822
2019-05-06 2019-03-31 13F/A-1 GILEAD SCIENCES COM 375558103 14,601 321 2.25 954 6.71 0.1297
2019-05-01 2019-03-31 13F GILEAD SCIENCES COM 375558103 29,202 14,922 1,908
2019-02-13 2018-12-31 13F GILEAD SCIENCES COM 375558103 14,280 -1,273 -8.18 894 -25.75 0.1404
2018-11-14 2018-09-30 13F GILEAD SCIENCES COM 375558103 15,553 -1,254 -7.46 1,204 1.09 0.1470
2018-08-14 2018-06-30 13F GILEAD SCIENCES COM 375558103 16,807 -6,051 -26.47 1,191 -30.88 0.1605
2018-05-18 2018-03-31 13F GILEAD SCIENCES COM 375558103 22,858 -1,107 -4.62 1,723 0.64 0.2277
2018-02-13 2017-12-31 13F GILEAD SCIENCES COM 375558103 23,965 -3,514 -12.79 1,712 -22.71 0.2268
2017-11-16 2017-09-30 13F GILEAD SCIENCES COM 375558103 27,479 2,496 9.99 2,215 25.21 0.3204
2017-08-15 2017-06-30 13F GILEAD SCIENCES COM 375558103 24,983 -600 -2.35 1,769 1.49 0.2940
2017-05-15 2017-03-31 13F GILEAD SCIENCES COM 375558103 25,583 1,832 7.71 1,743 2.59 0.2941
2017-02-13 2016-12-31 13F GILEAD SCIENCES COM 375558103 23,751 -3,525 -12.92 1,699 -21.67 0.2797
2016-11-14 2016-09-30 13F GILEAD SCIENCES COM 375558103 27,276 4,782 21.26 2,169 15.74 0.3626
2016-08-08 2016-06-30 13F GILEAD SCIENCES COM 375558103 22,494 -8,413 -27.22 1,874 -33.83 0.3292
2016-05-10 2016-03-31 13F GILEAD SCIENCES COM 375558103 30,907 6,994 29.25 2,832 17.61 0.5111
2016-02-09 2015-12-31 13F GILEAD SCIENCES COM 375558103 23,913 -2,551 -9.64 2,408 -7.63 0.4409
2015-11-17 2015-09-30 13F GILEAD SCIENCES COM 375558103 26,464 -1,249 -4.51 2,607 -19.69 0.4816
2015-08-17 2015-06-30 13F GILEAD SCIENCES COM 375558103 27,713 211 0.77 3,246 19.65 0.5278
2015-05-14 2015-03-31 13F GILEAD SCIENCES COM 375558103 27,502 3,625 15.18 2,713 20.95 0.4525
2015-02-17 2014-12-31 13F GILEAD SCIENCES COM 375558103 23,877 2,180 10.05 2,243 -3.19 0.3801
2014-11-12 2014-09-30 13F GILEAD SCIENCES COM 375558103 21,697 5,990 38.14 2,317 77.55 0.3941
2014-08-11 2014-06-30 13F GILEAD SCIENCES COM 375558103 15,707 2,270 16.89 1,305 37.08 0.2200
2014-05-08 2014-03-31 13F GILEAD SCIENCES COM 375558103 13,437 13,437 952 0.2408
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2020-01-28 2019-12-31 13F GILEAD SCIENCES COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-10-22 2019-09-30 13F GILEAD SCIENCES COM Call 46,800 30 n/a n/a n/a
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.