Arcus Biosciences, Inc.
US ˙ NYSE ˙ US03969F1093

SecurityRCUS / Arcus Biosciences, Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership86,557 shares
Latest Disclosed Value $ 2,062,653
Parallel Advisors, LLC ownership in RCUS / Arcus Biosciences, Inc.

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 86,557 shares of Arcus Biosciences, Inc. (US:RCUS) valued at $2,062,653 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 88,007 shares of Arcus Biosciences, Inc.. This represents a change in shares of -1.65% during the quarter. The current value of the position is $2,065,250 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (RCUS) 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.

RCUS / Arcus Biosciences, 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)
2026-02-11 2025-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 86,557 -1,450 -1.65 2,063 72.41 0.0377
2025-11-13 2025-09-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 88,007 0 0.00 1,197 67.04 0.0219
2025-07-08 2025-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 88,007 1,422 1.64 716 1.56 0.0143
2025-04-08 2025-03-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 86,585 778 0.91 706 -44.79 0.0159
2025-02-10 2024-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,807 0 0.00 1,278 -2.59 0.0287
2024-11-13 2024-09-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,807 -15 -0.02 1,312 0.31 0.0308
2024-08-08 2024-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,822 15 0.02 1,307 -19.32 0.0335
2024-05-06 2024-03-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,807 75 0.09 1,620 -1.04 0.0439
2024-02-12 2023-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,732 350 0.41 1,637 6.85 0.0486
2024-05-20 2023-09-30 13F/A-1 ARCUS BIOSCIENCES INC COM Stock 03969F109 85,382 0 0.00 1,533 -11.65 0.0511
2023-11-14 2023-09-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,382 0 1,533 0.0511
2024-05-20 2023-06-30 13F/A-1 ARCUS BIOSCIENCES INC COM Stock 03969F109 85,382 0 0.00 1,734 11.37 0.0558
2023-08-04 2023-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,382 0 1,734 0.0558
2024-05-20 2023-03-31 13F/A-1 ARCUS BIOSCIENCES INC COM Stock 03969F109 85,382 225 0.26 1,557 -11.58 0.0525
2023-04-25 2023-03-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,382 225 1,557 0.0525
2023-02-06 2022-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,157 295 0.35 1,761 -20.68 0.0764
2022-11-10 2022-09-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 84,862 5 0.01 2,220 3.26 0.1022
2022-08-01 2022-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 84,857 29 0.03 2,150 -24.11 0.0987
2022-04-28 2022-03-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 84,828 25 0.03 2,833 -17.45 0.1124
2022-01-20 2021-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 84,803 -180 -0.21 3,432 15.83 0.1274
2021-11-02 2021-09-30 13F/A-1 ARCUS BIOSCIENCES INC COM Stock 03969F109 84,983 -242 -0.28 2,963 26.62 0.1195
2021-08-06 2021-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,225 0 0.00 2,340 -2.21 0.0991
2021-04-23 2021-03-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,225 0 0.00 2,393 8.18 0.1129
2021-02-02 2020-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,225 0 0.00 2,212 51.40 0.1201
2020-10-27 2020-09-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 85,225 -1,655 -1.90 1,461 -32.01 0.0904
2020-07-16 2020-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 86,880 -734 -0.84 2,149 76.73 0.1403
2020-04-27 2020-03-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 87,614 759 0.87 1,216 38.65 0.0985
2020-01-30 2019-12-31 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 86,855 800 0.93 877 12.01 0.0658
2019-11-01 2019-09-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 86,055 85,430 13,668.80 783 15,560.00 0.0670
2019-08-05 2019-06-30 13F ARCUS BIOSCIENCES INC COM Stock 03969F109 625 625 5 0.0005
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
(%)
2022-01-19 2021-12-31 13F ARCUS BIOSCIENCES INC COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F ARCUS BIOSCIENCES INC COM Stock Call 85,225 2,340 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.