Roblox Corporation
US ˙ NYSE ˙ US7710491033

SecurityRBLX / Roblox Corporation
InstitutionIMC-Chicago, LLC
Latest Disclosed Ownership161,968 shares
Latest Disclosed Value $ 9,160,910
IMC-Chicago, LLC ownership in RBLX / Roblox Corporation

On May 5, 2026 - IMC-Chicago, LLC filed a 13F-HR form disclosing ownership of 161,968 shares of Roblox Corporation (US:RBLX) valued at $9,160,910 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 82,096 shares of Roblox Corporation. This represents a change in shares of 97.29% during the quarter. The current value of the position is $7,021,313 USD.

IMC-Chicago, 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 1,195,500 of underlying shares valued at $67,617,480 USD and put options representing 1,894,700 of underlying shares valued at $107,164,232 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.

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)
2026-05-05 2026-03-31 13F ROBLOX CL A 771049103 161,968 79,872 97.29 9,161 37.70 0.0033
2026-01-29 2025-12-31 13F ROBLOX CL A 771049103 82,096 82,096 6,652 0.0024
2025-07-22 2025-06-30 13F ROBLOX CL A 771049103 0 -30,678 -100.00 0 -100.00
2025-04-14 2025-03-31 13F ROBLOX CL A 771049103 30,678 30,678 1,788 0.0010
2025-01-27 2024-12-31 13F ROBLOX CL A 771049103 0 -52,819 -100.00 0 -100.00
2024-10-25 2024-09-30 13F ROBLOX CL A 771049103 52,819 52,819 2,338 0.0013
2024-07-15 2024-06-30 13F ROBLOX CL A 771049103 0 -15,486 -100.00 0 -100.00
2024-04-12 2024-03-31 13F ROBLOX CL A 771049103 15,486 15,486 591 0.0004
2023-10-12 2023-09-30 13F ROBLOX CL A 771049103 0 -29,399 -100.00 0 -100.00
2023-07-14 2023-06-30 13F ROBLOX CL A 771049103 29,399 29,399 1,185 0.0011
2022-11-08 2022-09-30 13F ROBLOX CL A 771049103 0 -25,903 -100.00 0 -100.00
2022-08-05 2022-06-30 13F ROBLOX CL A 771049103 25,903 -32,380 -55.56 851 -68.42 0.0012
2022-04-19 2022-03-31 13F ROBLOX CL A 771049103 58,283 40,317 224.41 2,695 45.44 0.0027
2022-02-08 2021-12-31 13F ROBLOX CL A 771049103 17,966 17,966 1,853 0.0015
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
(%)
2026-05-05 2026-03-31 13F ROBLOX CL A Call 1,195,500 -12.18 67,617 -38.70 n/a n/a n/a
2026-01-29 2025-12-31 13F ROBLOX CL A Call 1,361,300 -3.61 110,306 -43.62 n/a n/a n/a
2025-11-04 2025-09-30 13F ROBLOX CL A Call 1,412,300 -8.00 195,632 21.14 n/a n/a n/a
2025-07-22 2025-06-30 13F ROBLOX CL A Call 1,535,100 89.03 161,493 241.15 n/a n/a n/a
2025-04-14 2025-03-31 13F ROBLOX CL A Call 812,100 -26.09 47,337 -25.54 n/a n/a n/a
2025-01-27 2024-12-31 13F ROBLOX CL A Call 1,098,700 79.47 63,571 134.62 n/a n/a n/a
2024-10-25 2024-09-30 13F ROBLOX CL A Call 612,200 -22.61 27,096 -7.95 n/a n/a n/a
2024-07-15 2024-06-30 13F ROBLOX CL A Call 791,100 -9.92 29,437 -12.21 n/a n/a n/a
2024-04-12 2024-03-31 13F ROBLOX CL A Call 878,200 -23.93 33,530 -36.48 n/a n/a n/a
2024-02-09 2023-12-31 13F ROBLOX CL A Call 1,154,500 40.86 52,784 122.38 n/a n/a n/a
2023-10-12 2023-09-30 13F ROBLOX CL A Call 819,600 43.19 23,736 2.90 n/a n/a n/a
2023-07-14 2023-06-30 13F ROBLOX CL A Call 572,400 -4.65 23,068 -14.57 n/a n/a n/a
2023-04-24 2023-03-31 13F ROBLOX CL A Call 600,300 -19.21 27,001 27.69 n/a n/a n/a
2023-04-24 2022-12-31 13F/A ROBLOX CL A Call 743,000 -11.45 21,146 -29.69 n/a n/a n/a
2023-02-09 2022-12-31 13F ROBLOX CL A Call 743,000 21 n/a n/a n/a
2022-11-08 2022-09-30 13F ROBLOX CL A Call 839,100 -14.30 30,073 -6.53 n/a n/a n/a
2022-08-05 2022-06-30 13F ROBLOX CL A Call 979,100 -8.47 32,173 -34.96 n/a n/a n/a
2022-04-19 2022-03-31 13F ROBLOX CL A Call 1,069,700 73.15 49,463 -22.39 n/a n/a n/a
2022-02-08 2021-12-31 13F ROBLOX CL A Call 617,800 94.03 63,732 164.94 n/a n/a n/a
2021-11-05 2021-09-30 13F ROBLOX CL A Call 318,400 -28.35 24,055 -39.84 n/a n/a n/a
2021-08-06 2021-06-30 13F ROBLOX CL A Call 444,400 39,987 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
(%)
2026-05-05 2026-03-31 13F ROBLOX CL A Put 1,894,700 41.04 107,164 -1.55 n/a n/a n/a
2026-01-29 2025-12-31 13F ROBLOX CL A Put 1,343,400 -10.49 108,856 -47.64 n/a n/a n/a
2025-11-04 2025-09-30 13F ROBLOX CL A Put 1,500,900 48.55 207,905 95.59 n/a n/a n/a
2025-07-22 2025-06-30 13F ROBLOX CL A Put 1,010,400 34.20 106,294 142.20 n/a n/a n/a
2025-04-14 2025-03-31 13F ROBLOX CL A Put 752,900 -18.47 43,887 -17.87 n/a n/a n/a
2025-01-27 2024-12-31 13F ROBLOX CL A Put 923,500 9.76 53,434 43.48 n/a n/a n/a
2024-10-25 2024-09-30 13F ROBLOX CL A Put 841,400 19.50 37,240 42.14 n/a n/a n/a
2024-07-15 2024-06-30 13F ROBLOX CL A Put 704,100 25.58 26,200 22.39 n/a n/a n/a
2024-04-12 2024-03-31 13F ROBLOX CL A Put 560,700 -1.63 21,408 -17.85 n/a n/a n/a
2024-02-09 2023-12-31 13F ROBLOX CL A Put 570,000 34.94 26,060 113.05 n/a n/a n/a
2023-10-12 2023-09-30 13F ROBLOX CL A Put 422,400 -12.67 12,233 -37.25 n/a n/a n/a
2023-07-14 2023-06-30 13F ROBLOX CL A Put 483,700 -11.73 19,493 -20.92 n/a n/a n/a
2023-04-24 2023-03-31 13F ROBLOX CL A Put 548,000 2.26 24,649 61.62 n/a n/a n/a
2023-04-24 2022-12-31 13F/A ROBLOX CL A Put 535,900 -5.03 15,252 -24.59 n/a n/a n/a
2023-02-09 2022-12-31 13F ROBLOX CL A Put 535,900 15 n/a n/a n/a
2022-11-08 2022-09-30 13F ROBLOX CL A Put 564,300 -14.15 20,225 -6.36 n/a n/a n/a
2022-08-05 2022-06-30 13F ROBLOX CL A Put 657,300 -28.38 21,599 -49.11 n/a n/a n/a
2022-04-19 2022-03-31 13F ROBLOX CL A Put 917,800 58.08 42,439 -29.14 n/a n/a n/a
2022-02-08 2021-12-31 13F ROBLOX CL A Put 580,600 75.73 59,895 139.94 n/a n/a n/a
2021-11-05 2021-09-30 13F ROBLOX CL A Put 330,400 -33.48 24,962 -44.15 n/a n/a n/a
2021-08-06 2021-06-30 13F ROBLOX CL A Put 496,700 44,693 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.