Roblox Corporation
US ˙ NYSE ˙ US7710491033

SecurityRBLX / Roblox Corporation
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership503,739 shares
Latest Disclosed Value $ 28,491,478
Citadel Advisors Llc ownership in RBLX / Roblox Corporation

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 503,739 shares of Roblox Corporation (US:RBLX) valued at $28,491,478 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,760,351 shares of Roblox Corporation. This represents a change in shares of -71.38% during the quarter. The current value of the position is $22,003,320 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (RBLX) in the form of stock options. The firm currently holds call options representing 2,690,100 of underlying shares valued at $152,152,056 USD and put options representing 1,504,000 of underlying shares valued at $85,066,240 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

RBLX / Roblox Corporation 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 ROBLOX CL A 771049103 503,739 -1,256,612 -71.38 28,491 -80.03 0.0046
2026-02-17 2025-12-31 13F ROBLOX CL A 771049103 1,760,351 927,350 111.33 142,641 23.62 0.0214
2025-11-14 2025-09-30 13F ROBLOX CL A 771049103 833,001 -649,352 -43.81 115,387 -26.01 0.0176
2025-08-14 2025-06-30 13F ROBLOX CL A 771049103 1,482,353 -890,537 -37.53 155,944 12.74 0.0271
2025-05-15 2025-03-31 13F ROBLOX CL A 771049103 2,372,890 -929,747 -28.15 138,316 -27.62 0.0262
2025-02-14 2024-12-31 13F ROBLOX CL A 771049103 3,302,637 431,756 15.04 191,091 50.39 0.0331
2024-11-14 2024-09-30 13F ROBLOX CL A 771049103 2,870,881 -2,161,816 -42.96 127,065 -32.15 0.0245
2024-08-14 2024-06-30 13F ROBLOX CL A 771049103 5,032,697 -169,299 -3.25 187,267 -5.71 0.0379
2024-05-15 2024-03-31 13F ROBLOX CL A 771049103 5,201,996 -3,413,082 -39.62 198,612 -49.58 0.0383
2024-02-14 2023-12-31 13F ROBLOX CL A 771049103 8,615,078 5,901,039 217.43 393,881 401.13 0.0787
2023-11-14 2023-09-30 13F ROBLOX CL A 771049103 2,714,039 2,239,065 471.41 78,599 310.63 0.0168
2023-08-14 2023-06-30 13F ROBLOX CL A 771049103 474,974 -1,634,878 -77.49 19,141 -79.83 0.0040
2023-05-15 2023-03-31 13F ROBLOX CL A 771049103 2,109,852 -693,644 -24.74 94,901 18.94 0.0209
2023-02-14 2022-12-31 13F ROBLOX CL A 771049103 2,803,496 2,041,660 267.99 79,787 192.22 0.0186
2022-11-14 2022-09-30 13F ROBLOX CL A 771049103 761,836 -4,097,502 -84.32 27,304 -82.90 0.0062
2022-08-15 2022-06-30 13F ROBLOX CL A 771049103 4,859,338 3,814,758 365.20 159,677 230.59 0.0410
2022-05-16 2022-03-31 13F ROBLOX CL A 771049103 1,044,580 281,089 36.82 48,301 -38.67 0.0100
2022-02-14 2021-12-31 13F ROBLOX CL A 771049103 763,491 -1,234,168 -61.78 78,762 -47.81 0.0161
2021-11-15 2021-09-30 13F ROBLOX Cmn 771049103 1,997,659 41,503 2.12 150,924 -14.26 0.0314
2021-08-16 2021-06-30 13F ROBLOX CL A 771049103 1,956,156 1,576,226 414.87 176,015 614.61 0.0394
2021-05-21 2021-03-31 13F/A-1 ROBLOX CL A 771049103 379,930 379,930 24,631 0.0060
2021-05-17 2021-03-31 13F ROBLOX CL A 771049103 379,930 379,930 24,631 0.0060
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
(%)
2026-05-15 2026-03-31 13F ROBLOX CL A Call 2,690,100 -39.58 152,152 -57.82 n/a n/a n/a
2026-02-17 2025-12-31 13F ROBLOX CL A Call 4,452,000 29.52 360,746 -24.23 n/a n/a n/a
2025-11-14 2025-09-30 13F ROBLOX CL A Call 3,437,200 1.64 476,121 33.83 n/a n/a n/a
2025-08-14 2025-06-30 13F ROBLOX CL A Call 3,381,900 24.29 355,776 124.31 n/a n/a n/a
2025-05-15 2025-03-31 13F ROBLOX CL A Call 2,721,000 21.79 158,607 22.69 n/a n/a n/a
2025-02-14 2024-12-31 13F ROBLOX CL A Call 2,234,200 -41.36 129,271 -23.35 n/a n/a n/a
2024-11-14 2024-09-30 13F ROBLOX CL A Call 3,810,200 29.38 168,639 53.90 n/a n/a n/a
2024-08-14 2024-06-30 13F ROBLOX CL A Call 2,944,900 -26.48 109,580 -28.35 n/a n/a n/a
2024-05-15 2024-03-31 13F ROBLOX CL A Call 4,005,500 -27.64 152,930 -39.58 n/a n/a n/a
2024-02-14 2023-12-31 13F ROBLOX CL A Call 5,535,800 13.77 253,097 79.61 n/a n/a n/a
2023-11-14 2023-09-30 13F ROBLOX CL A Call 4,865,900 8.49 140,916 -22.04 n/a n/a n/a
2023-08-14 2023-06-30 13F ROBLOX CL A Call 4,485,200 -28.69 180,754 -36.11 n/a n/a n/a
2023-05-15 2023-03-31 13F ROBLOX CL A Call 6,289,400 75.70 282,897 177.69 n/a n/a n/a
2023-02-14 2022-12-31 13F ROBLOX CL A Call 3,579,600 -24.80 101,875 -40.28 n/a n/a n/a
2022-11-14 2022-09-30 13F ROBLOX CL A Call 4,759,800 -1.98 170,591 6.91 n/a n/a n/a
2022-08-15 2022-06-30 13F ROBLOX CL A Call 4,856,000 71.72 159,568 22.03 n/a n/a n/a
2022-05-16 2022-03-31 13F ROBLOX CL A Call 2,827,800 29.97 130,757 -41.74 n/a n/a n/a
2022-02-14 2021-12-31 13F ROBLOX CL A Call 2,175,700 76.10 224,445 140.45 n/a n/a n/a
2021-11-15 2021-09-30 13F ROBLOX Cmn Call 1,235,500 -14.02 93,342 -27.81 n/a n/a n/a
2021-08-16 2021-06-30 13F ROBLOX CL A Call 1,437,000 758.42 129,301 1,091.38 n/a n/a n/a
2021-05-21 2021-03-31 13F/A ROBLOX CL A Call 167,400 10,853 n/a n/a n/a
2021-05-17 2021-03-31 13F ROBLOX CL A Call 167,400 10,853 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
(%)
2026-05-15 2026-03-31 13F ROBLOX CL A Put 1,504,000 -24.41 85,066 -47.24 n/a n/a n/a
2026-02-17 2025-12-31 13F ROBLOX CL A Put 1,989,800 -30.73 161,233 -59.48 n/a n/a n/a
2025-11-14 2025-09-30 13F ROBLOX CL A Put 2,872,700 117.96 397,926 186.99 n/a n/a n/a
2025-08-14 2025-06-30 13F ROBLOX CL A Put 1,318,000 40.48 138,654 153.54 n/a n/a n/a
2025-05-15 2025-03-31 13F ROBLOX CL A Put 938,200 -35.05 54,688 -34.57 n/a n/a n/a
2025-02-14 2024-12-31 13F ROBLOX CL A Put 1,444,500 -50.47 83,579 -35.26 n/a n/a n/a
2024-11-14 2024-09-30 13F ROBLOX CL A Put 2,916,700 161.82 129,093 211.44 n/a n/a n/a
2024-08-14 2024-06-30 13F ROBLOX CL A Put 1,114,000 -49.36 41,452 -50.65 n/a n/a n/a
2024-05-15 2024-03-31 13F ROBLOX CL A Put 2,199,900 -2.99 83,992 -18.98 n/a n/a n/a
2024-02-14 2023-12-31 13F ROBLOX CL A Put 2,267,600 -27.52 103,675 14.42 n/a n/a n/a
2023-11-14 2023-09-30 13F ROBLOX CL A Put 3,128,800 -7.70 90,610 -33.67 n/a n/a n/a
2023-08-14 2023-06-30 13F ROBLOX CL A Put 3,389,700 -18.66 136,605 -27.12 n/a n/a n/a
2023-05-15 2023-03-31 13F ROBLOX CL A Put 4,167,300 -21.99 187,445 23.29 n/a n/a n/a
2023-02-14 2022-12-31 13F ROBLOX CL A Put 5,341,900 7.78 152,030 -14.42 n/a n/a n/a
2022-11-14 2022-09-30 13F ROBLOX CL A Put 4,956,500 91.86 177,641 109.26 n/a n/a n/a
2022-08-15 2022-06-30 13F ROBLOX CL A Put 2,583,400 -19.67 84,891 -42.91 n/a n/a n/a
2022-05-16 2022-03-31 13F ROBLOX CL A Put 3,216,000 38.57 148,708 -37.89 n/a n/a n/a
2022-02-14 2021-12-31 13F ROBLOX CL A Put 2,320,900 9.10 239,424 48.97 n/a n/a n/a
2021-11-15 2021-09-30 13F ROBLOX Cmn Put 2,127,400 -5.98 160,725 -21.05 n/a n/a n/a
2021-08-16 2021-06-30 13F ROBLOX CL A Put 2,262,600 535.38 203,589 781.87 n/a n/a n/a
2021-05-21 2021-03-31 13F/A ROBLOX CL A Put 356,100 23,086 n/a n/a n/a
2021-05-17 2021-03-31 13F ROBLOX CL A Put 356,100 23,086 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.