Gilead Sciences, Inc.
CH ˙ SWX ˙ US3755581036
SecurityCH:GILD / Gilead Sciences, Inc.
InstitutionCi Investments Inc.
Latest Disclosed Ownership224,299 shares
Latest Disclosed Value $ 31,260,552
Ci Investments Inc. ownership in GILD / Gilead Sciences, Inc.

On May 13, 2026 - Ci Investments Inc. filed a 13F-HR form disclosing ownership of 224,299 shares of Gilead Sciences, Inc. (CH:GILD) valued at $31,260,552 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 102,066 shares of Gilead Sciences, Inc.. This represents a change in shares of 119.76% during the quarter.

Ci Investments 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)
2026-05-13 2026-03-31 13F GILEAD SCIENCES COM 375558103 224,299 122,233 119.76 31,261 149.54 0.1066
2026-02-12 2025-12-31 13F GILEAD SCIENCES COM 375558103 102,066 -9,638 -8.63 12,528 104,291.67 0.0549
2025-11-12 2025-09-30 13F GILEAD SCIENCES COM 375558103 111,704 -53,526 -32.39 12 -33.33 0.0451
2025-08-12 2025-06-30 13F GILEAD SCIENCES COM 375558103 165,230 21,088 14.63 18 12.50 0.0687
2025-05-13 2025-03-31 13F GILEAD SCIENCES COM 375558103 144,142 20,317 16.41 16 45.45 0.0680
2025-02-12 2024-12-31 13F GILEAD SCIENCES COM 375558103 123,825 4,834 4.06 11 22.22 0.0431
2024-11-12 2024-09-30 13F GILEAD SCIENCES COM 375558103 118,991 -6,534 -5.21 10 12.50 0.0380
2024-08-12 2024-06-30 13F GILEAD SCIENCES COM 375558103 125,525 -2,503 -1.96 9 -11.11 0.0339
2024-05-13 2024-03-31 13F GILEAD SCIENCES COM 375558103 128,028 28,418 28.53 9 12.50 0.0372
2024-02-12 2023-12-31 13F GILEAD SCIENCES COM 375558103 99,610 25,361 34.16 8 60.00 0.0417
2023-11-13 2023-09-30 13F GILEAD SCIENCES COM 375558103 74,249 -9,579 -11.43 6 -16.67 0.0310
2023-08-11 2023-06-30 13F GILEAD SCIENCES COM 375558103 83,828 -8,594 -9.30 6 -14.29 0.0326
2023-05-12 2023-03-31 13F GILEAD SCIENCES COM 375558103 92,422 43,042 87.16 8 75.00 0.0386
2023-02-10 2022-12-31 13F GILEAD SCIENCES COM 375558103 49,380 4,048 8.93 4 -99.86 0.0214
2022-11-14 2022-09-30 13F GILEAD SCIENCES COM 375558103 45,332 194 0.43 2,797 0.25 0.0145
2022-08-12 2022-06-30 13F GILEAD SCIENCES COM 375558103 45,138 -2,436 -5.12 2,790 -1.34 0.0130
2022-05-12 2022-03-31 13F GILEAD SCIENCES COM 375558103 47,574 12,566 35.89 2,828 11.25 0.0104
2022-02-11 2021-12-31 13F GILEAD SCIENCES COM 375558103 35,008 6,801 24.11 2,542 29.04 0.0088
2021-11-12 2021-09-30 13F GILEAD SCIENCES COM 375558103 28,207 -46,856 -62.42 1,970 -61.89 0.0073
2021-08-13 2021-06-30 13F GILEAD SCIENCES COM 375558103 75,063 -25,329 -25.23 5,169 -20.33 0.0189
2021-05-13 2021-03-31 13F GILEAD SCIENCES COM 375558103 100,392 -282,029 -73.75 6,488 -70.88 0.0274
2021-02-09 2020-12-31 13F GILEAD SCIENCES COM 375558103 382,421 4,610 1.22 22,280 -6.68 0.0982
2020-11-09 2020-09-30 13F GILEAD SCIENCES COM 375558103 377,811 30,712 8.85 23,874 -10.60 0.1186
2020-08-07 2020-06-30 13F GILEAD SCIENCES COM 375558103 347,099 -876,035 -71.62 26,705 -70.80 0.1423
2020-08-07 2020-03-31 13F GILEAD SCIENCES COM 375558103 1,223,134 -4,469,319 -78.51 91,442 -75.28 0.5547
2020-02-11 2019-12-31 13F GILEAD SCIENCES COM 375558103 5,692,453 -932,593 -14.08 369,896 -11.91 1.8786
2019-11-08 2019-09-30 13F GILEAD SCIENCES COM 375558103 6,625,046 917,751 16.08 419,895 8.46 2.1686
2019-08-12 2019-06-30 13F GILEAD SCIENCES COM 375558103 5,707,295 815,359 16.67 387,126 21.73 2.1541
2019-05-15 2019-03-31 13F GILEAD SCIENCES COM 375558103 4,891,936 -611,943 -11.12 318,025 -7.62 1.7834
2019-02-15 2018-12-31 13F GILEAD SCIENCES COM 375558103 5,503,879 3,987,484 262.96 344,268 194.04 2.2221
2018-11-09 2018-09-30 13F GILEAD SCIENCES COM 375558103 1,516,395 282,342 22.88 117,081 33.93 0.8767
2018-08-14 2018-06-30 13F GILEAD SCIENCES COM 375558103 1,234,053 526,174 74.33 87,420 63.81 0.6868
2018-05-11 2018-03-31 13F GILEAD SCIENCES COM 375558103 707,879 -1,072,613 -60.24 53,367 -58.16 0.6144
2018-05-11 2017-12-31 13F/A-1 GILEAD SCIENCES COM 375558103 1,780,492 1,122,867 170.75 127,554 139.40 1.3078
2018-02-02 2017-12-31 13F GILEAD SCIENCES COM 375558103 2,141,052 1,483,427 153,385
2018-05-11 2017-09-30 13F/A-1 GILEAD SCIENCES COM 375558103 657,625 657,625 53,281 0.5200
2017-11-06 2017-09-30 13F GILEAD SCIENCES COM 375558103 657,625 53,281 0.4883
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
(%)
2020-08-07 2020-06-30 13F GILEAD SCIENCES OPTIONS Call 0 0 n/a n/a n/a
2020-08-07 2020-03-31 13F GILEAD SCIENCES OPTIONS Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-11 2019-12-31 13F GILEAD SCIENCES OPTIONS Call 3,268 0.00 11 -76.60 n/a n/a n/a
2019-11-08 2019-09-30 13F GILEAD SCIENCES OPTIONS Call 3,268 -15.16 47 -89.58 n/a n/a n/a
2019-08-12 2019-06-30 13F GILEAD SCIENCES OPTIONS Call 3,852 0.00 451 -9.62 n/a n/a n/a
2019-05-15 2019-03-31 13F GILEAD SCIENCES OPTIONS Call 3,852 -16.06 499 -57.35 n/a n/a n/a
2019-02-15 2018-12-31 13F GILEAD SCIENCES OPTIONS Call 4,589 -34.24 1,170 -80.13 n/a n/a n/a
2018-11-09 2018-09-30 13F GILEAD SCIENCES OPTIONS Call 6,978 -35.51 5,888 -11.02 n/a n/a n/a
2018-08-14 2018-06-30 13F GILEAD SCIENCES OPTIONS Call 10,820 6,617 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.