Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionMan Group plc
Latest Disclosed Ownership678,066 shares
Latest Disclosed Value $ 94,502,059
Man Group plc ownership in GILD / Gilead Sciences, Inc.

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 678,066 shares of Gilead Sciences, Inc. (CH:GILD) valued at $94,502,059 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,725,112 shares of Gilead Sciences, Inc.. This represents a change in shares of -60.69% during the quarter.

Man Group plc 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 and put 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)
2026-05-15 2026-03-31 13F GILEAD SCIENCES COM 375558103 678,066 -1,047,046 -60.69 94,502 -55.37 0.1714
2026-02-17 2025-12-31 13F GILEAD SCIENCES COM 375558103 1,725,112 -31,479 -1.79 211,740 8.60 0.3599
2025-11-14 2025-09-30 13F GILEAD SCIENCES COM 375558103 1,756,591 181,636 11.53 194,982 11.66 0.3391
2025-08-14 2025-06-30 13F GILEAD SCIENCES COM 375558103 1,574,955 -89,633 -5.38 174,615 -6.38 0.3326
2025-05-15 2025-03-31 13F GILEAD SCIENCES COM 375558103 1,664,588 791,409 90.64 186,517 131.25 0.4729
2025-02-14 2024-12-31 13F GILEAD SCIENCES COM 375558103 873,179 243,567 38.69 80,656 52.80 0.2122
2024-11-14 2024-09-30 13F GILEAD SCIENCES COM 375558103 629,612 -560,079 -47.08 52,787 -35.33 0.1374
2024-08-14 2024-06-30 13F GILEAD SCIENCES COM 375558103 1,189,691 198,367 20.01 81,625 12.41 0.2061
2024-05-15 2024-03-31 13F GILEAD SCIENCES COM 375558103 991,324 531,975 115.81 72,614 95.14 0.1831
2024-02-14 2023-12-31 13F GILEAD SCIENCES COM 375558103 459,349 37,212 -13.27 0.1036
2023-11-14 2023-09-30 13F GILEAD SCIENCES COM 375558103 42,903 -49.78 0.1329
2023-08-14 2023-06-30 13F GILEAD SCIENCES COM 375558103 1,108,577 85,438 -30.52 0.2636
2023-05-15 2023-03-31 13F GILEAD SCIENCES COM 375558103 122,969 -37.69 0.4374
2023-02-14 2022-12-31 13F GILEAD SCIENCES COM 375558103 2,298,890 643,986 38.91 197,360 93.31 0.7075
2022-11-14 2022-09-30 13F GILEAD SCIENCES COM 375558103 1,654,904 102,092 13.85 0.4738
2022-08-15 2022-06-30 13F GILEAD SCIENCES COM 375558103 89,670 51.20 0.3800
2022-05-16 2022-03-31 13F GILEAD SCIENCES COM 375558103 997,530 335,895 50.77 59,304 23.44 0.2063
2022-02-14 2021-12-31 13F GILEAD SCIENCES COM 375558103 661,635 278,407 72.65 48,041 79.47 0.1545
2021-11-15 2021-09-30 13F GILEAD SCIENCES COM 375558103 383,228 -151,229 -28.30 26,768 -27.27 0.0939
2021-08-16 2021-06-30 13F GILEAD SCIENCES COM 375558103 534,457 -717,941 -57.33 36,803 -54.53 0.1296
2021-05-17 2021-03-31 13F GILEAD SCIENCES COM 375558103 1,252,398 30,087 2.46 80,943 13.66 0.3559
2021-02-16 2020-12-31 13F GILEAD SCIENCES COM 375558103 1,222,311 7,794 0.64 71,212 -7.21 0.3127
2020-11-16 2020-09-30 13F GILEAD SCIENCES COM 375558103 1,214,517 176,817 17.04 76,745 -3.88 0.3020
2020-08-14 2020-06-30 13F GILEAD SCIENCES COM 375558103 1,037,700 460,474 79.77 79,841 85.02 0.4026
2020-05-15 2020-03-31 13F GILEAD SCIENCES COM 375558103 577,226 -1,527,638 -72.58 43,153 -68.45 0.2796
2020-02-18 2019-12-31 13F GILEAD SCIENCES COM 375558103 2,104,864 -502,571 -19.27 136,775 -17.24 0.4498
2019-11-14 2019-09-30 13F GILEAD SCIENCES COM 375558103 2,607,435 -879,926 -25.23 165,260 -29.86 0.6138
2019-08-14 2019-06-30 13F GILEAD SCIENCES COM 375558103 3,487,361 -631,906 -15.34 235,606 -12.02 0.8516
2019-05-15 2019-03-31 13F GILEAD SCIENCES COM 375558103 4,119,267 189,698 4.83 267,795 8.95 1.0160
2019-02-14 2018-12-31 13F GILEAD SCIENCES COM 375558103 3,929,569 744,177 23.36 245,795 -0.06 1.0936
2018-11-14 2018-09-30 13F GILEAD SCIENCES COM 375558103 3,185,392 949,348 42.46 245,945 55.27 0.8983
2018-08-14 2018-06-30 13F GILEAD SCIENCES COM 375558103 2,236,044 104,335 4.89 158,402 -1.44 0.6516
2018-05-15 2018-03-31 13F GILEAD SCIENCES COM 375558103 2,131,709 2,131,709 160,710 0.7355
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
(%)
2022-08-15 2022-06-30 13F GILEAD SCIENCES COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F GILEAD SCIENCES COM Call 7,100 422 n/a n/a n/a
Disclosed Put 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
(%)
2022-08-15 2022-06-30 13F GILEAD SCIENCES COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F GILEAD SCIENCES COM Put 7,100 422 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.