Roku, Inc.
US ˙ NasdaqGS ˙ US77543R1023

SecurityROKU / Roku, Inc.
InstitutionMarex Group plc
Latest Disclosed Ownership7,483 shares
Latest Disclosed Value $ 708,041
Marex Group plc ownership in ROKU / Roku, Inc.

On May 13, 2026 - Marex Group plc filed a 13F-HR form disclosing ownership of 7,483 shares of Roku, Inc. (US:ROKU) valued at $708,041 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 29,868 shares of Roku, Inc.. This represents a change in shares of -74.95% during the quarter. The current value of the position is $914,872 USD.

Marex Group plc has a history of taking positions in derivatives of the underlying security (ROKU) in the form of stock options.

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.

ROKU / Roku, 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 ROKU COM CL A 77543R102 7,483 -22,385 -74.95 708 -78.15 0.0029
2026-02-12 2025-12-31 13F ROKU COM CL A 77543R102 29,868 -14,460 -32.62 3,240 -26.99 0.0204
2025-11-14 2025-09-30 13F ROKU COM CL A 77543R102 44,328 15,446 53.48 4,439 74.86 0.0314
2025-08-19 2025-06-30 13F ROKU COM CL A 77543R102 28,882 -1,101 -3.67 2,538 20.17 0.0220
2026-04-02 2025-03-31 13F ROKU COM CL A 77543R102 29,983 -9,873 -24.77 2,112 -28.70 0.0405
2026-04-02 2024-12-31 13F ROKU COM CL A 77543R102 39,856 16,141 68.06 2,963 67.34 0.0505
2026-04-07 2024-09-30 13F ROKU COM CL A 77543R102 23,715 -10,264 -30.21 1,771 -13.06 0.0404
2026-04-02 2024-06-30 13F ROKU COM CL A 77543R102 33,979 -22,118 -39.43 2,036 -44.30 0.0547
2026-04-02 2024-03-31 13F ROKU COM CL A 77543R102 56,097 11,565 25.97 3,656 -10.44 0.1188
2026-04-02 2023-12-31 13F ROKU COM CL A 77543R102 44,532 -3,808 -7.88 4,082 19.61 0.1604
2026-04-02 2023-09-30 13F ROKU COM CL A 77543R102 48,340 -11,666 -19.44 3,412 -11.08 0.4822
2026-04-02 2023-06-30 13F ROKU COM CL A 77543R102 60,006 -1,951 -3.15 3,838 -5.91 0.6921
2026-04-02 2023-03-31 13F ROKU COM CL A 77543R102 61,957 -21,691 -25.93 4,078 19.80 0.5399
2026-04-02 2022-12-31 13F ROKU COM CL A 77543R102 83,648 83,648 3,404 0.4837
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
(%)
2026-05-13 2026-03-31 13F ROKU COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-12 2025-12-31 13F ROKU COM CL A Put 47,500 0.00 5,153 8.35 n/a n/a n/a
2025-11-14 2025-09-30 13F ROKU COM CL A Put 47,500 4,756 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.