Roblox Corporation
MX ˙ BMV ˙ US7710491033
SecurityMX:RBLX / Roblox Corporation
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership2,283,075 shares
Latest Disclosed Value $ 129,130,722
Qube Research & Technologies Ltd ownership in RBLX / Roblox Corporation

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 2,283,075 shares of Roblox Corporation (MX:RBLX) valued at $129,130,722 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,431,982 shares of Roblox Corporation. This represents a change in shares of -48.49% during the quarter.

Qube Research & Technologies Ltd 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 267,200 of underlying shares valued at $15,112,832 USD and put options representing 178,500 of underlying shares valued at $10,095,960 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.

MX: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 2,283,075 -2,148,907 -48.49 129,131 -64.04 0.1436
2026-02-17 2025-12-31 13F ROBLOX CL A 771049103 4,431,982 2,651,920 148.98 359,124 45.65 0.3648
2025-11-14 2025-09-30 13F ROBLOX CL A 771049103 1,780,062 -127,095 -6.66 246,574 22.90 0.2548
2025-08-14 2025-06-30 13F ROBLOX CL A 771049103 1,907,157 119,805 6.70 200,633 92.57 0.2039
2025-05-15 2025-03-31 13F ROBLOX CL A 771049103 1,787,352 -432,664 -19.49 104,185 -18.89 0.1208
2025-02-14 2024-12-31 13F ROBLOX CL A 771049103 2,220,016 1,799,884 428.41 128,450 590.78 0.1684
2024-11-14 2024-09-30 13F ROBLOX CL A 771049103 420,132 420,132 18,595 0.0274
2024-08-14 2024-06-30 13F ROBLOX CL A 771049103 0 -40,838 -100.00 0 -100.00
2024-05-14 2024-03-31 13F ROBLOX CL A 771049103 40,838 31,243 325.62 1,559 255.94 0.0025
2024-02-13 2023-12-31 13F ROBLOX CL A 771049103 9,595 9,595 439 0.0009
2023-11-13 2023-09-30 13F ROBLOX CL A 771049103 0 -26,975 -100.00 0 -100.00
2023-08-14 2023-06-30 13F ROBLOX CL A 771049103 26,975 -1,129 -4.02 1,087 -14.00 0.0040
2023-05-15 2023-03-31 13F ROBLOX CL A 771049103 28,104 28,104 1,264 0.0054
2022-08-15 2022-06-30 13F ROBLOX CL A 771049103 0 -53,302 -100.00 0 -100.00
2022-05-09 2022-03-31 13F ROBLOX CL A 771049103 53,302 -18,564 -25.83 2,465 -66.75 0.0209
2022-02-10 2021-12-31 13F/A-1 ROBLOX CL A 771049103 71,866 -8,458 -10.53 7,414 22.18 0.0572
2022-02-01 2021-12-31 13F ROBLOX CL A 771049103 71,866 -8,458 7,414 0.0573
2021-11-12 2021-09-30 13F ROBLOX CL A 771049103 80,324 52,215 185.76 6,068 139.94 0.0761
2021-08-13 2021-06-30 13F ROBLOX CL A 771049103 28,109 17,535 165.83 2,529 268.66 0.0288
2021-05-14 2021-03-31 13F ROBLOX CL A 771049103 10,574 10,574 686 0.0109
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 267,200 -13.67 15,113 -39.74 n/a n/a n/a
2026-02-17 2025-12-31 13F ROBLOX CL A Call 309,500 167.50 25,079 56.48 n/a n/a n/a
2025-11-14 2025-09-30 13F ROBLOX CL A Call 115,700 313.21 16,027 444.18 n/a n/a n/a
2025-08-14 2025-06-30 13F ROBLOX CL A Call 28,000 -34.43 2,946 18.37 n/a n/a n/a
2025-05-15 2025-03-31 13F ROBLOX CL A Call 42,700 2,746.67 2,489 2,793.02 n/a n/a n/a
2025-02-14 2024-12-31 13F ROBLOX CL A Call 1,500 87 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 178,500 -24.81 10,096 -47.52 n/a n/a n/a
2026-02-17 2025-12-31 13F ROBLOX CL A Put 237,400 74.17 19,237 1.89 n/a n/a n/a
2025-11-14 2025-09-30 13F ROBLOX CL A Put 136,300 199.56 18,880 294.48 n/a n/a n/a
2025-08-14 2025-06-30 13F ROBLOX CL A Put 45,500 37.88 4,787 148.88 n/a n/a n/a
2025-05-15 2025-03-31 13F ROBLOX CL A Put 33,000 32,900.00 1,924 38,360.00 n/a n/a n/a
2025-02-14 2024-12-31 13F ROBLOX CL A Put 100 6 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.