Save your place

Sign in to WhoBought

Please try again later.

Joel Greenblatt's Roblox Corporation (RBLX) position

Yes: as of Q1 2026, Joel Greenblatt holds 150K shares of RBLX worth $8.5M (0.0% of the disclosed portfolio). Last quarter the position was reduced by 1.4%. First disclosed Q2 2021.
View full portfolio →
Current value
$8.5M
Shares held
150K
% of portfolio
0.0%
Est. average buy price (i)
$48.09
Quarter-end price
$56.56

Estimated trade prices

Average price in quarters with purchases
$47.88
Average prices in quarters with sales
  • Q1 2026: $67.16 (2K shares sold)
  • Q4 2025: $106.17 (57K shares sold)
  • Q3 2025: $124.28 (11K shares sold)
  • Q1 2025: $62.86 (65K shares sold)
  • Q3 2024: $41.71 (21K shares sold)
  • Q2 2024: $35.60 (219 shares sold)

RBLX price vs Greenblatt's position

1Y 3Y 5Y MAX
Dates
$20$50$100$15020222023202420252026New position of 10K shares · Q4 2021. Average closing price $97.14 · Price range $70.22–$134.7210KsharespurchasedNew position of 8K shares · Q1 2023. Average closing price $38.22 · Price range $27.85–$45.338KsharespurchasedNew position of 6K shares · Q4 2023. Average closing price $36.95 · Price range $28.42–$46.856KsharespurchasedAdded 241K shares (over 1,000%) · Q1 2024. Average closing price $40.58 · Price range $36.20–$44.87241KsharespurchasedSold 219 shares (under 0.1%) · Q2 2024. Average closing price $35.60 · Price range $30.42–$40.54219sharessoldSold 21K shares (8.5%) · Q3 2024. Average closing price $41.71 · Price range $36.18–$47.6421KsharessoldAdded 20K shares (9.0%) · Q4 2024. Average closing price $50.32 · Price range $39.86–$61.4520KsharespurchasedSold 65K shares (26.6%) · Q1 2025. Average closing price $62.86 · Price range $53.77–$75.4765KsharessoldAdded 40K shares (22.3%) · Q2 2025. Average closing price $78.55 · Price range $51.22–$105.5940KsharespurchasedSold 11K shares (4.8%) · Q3 2025. Average closing price $124.28 · Price range $100.65–$141.5611KsharessoldSold 57K shares (27.3%) · Q4 2025. Average closing price $106.17 · Price range $80.99–$138.5657KsharessoldSold 2K shares (1.4%) · Q1 2026. Average closing price $67.16 · Price range $51.91–$87.282Ksharessold← Earlier —1 purchase
Average closing price · filing quarter
$67.16
Price range · filing quarter
$51.91 – $87.28
Sign in to see who bought

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −2K −$146K −1.4% 150K May 15, 2026
Q4 2025 Reduced −57K −$6.1M −27.3% 153K Feb 17, 2026
Q3 2025 Reduced −11K −$1.3M −4.8% 210K Nov 14, 2025
Q2 2025 Added +40K +$3.2M +22.3% 221K Aug 14, 2025
Q1 2025 Reduced −65K −$4.1M −26.6% 180K May 15, 2025
Q4 2024 Added +20K +$1.0M +9.0% 246K Feb 14, 2025
Q3 2024 Reduced −21K −$877K −8.5% 225K Nov 14, 2024
Q2 2024 Reduced −219 −$8K −0.1% 246K Aug 14, 2024
Q1 2024 Added +241K +$9.8M +3,975.2% 247K May 15, 2024
Q4 2023 New +6K +$224K – 6K Feb 14, 2024
Q1 2023 New +8K +$318K – 8K May 15, 2023
Q4 2021 New +10K +$943K – 10K Feb 14, 2022
Q2 2021 New +4K +$348K – 4K Aug 16, 2021
Data through Q1 2026 · filed May 15, 2026
13 grouped rows from 13 quarters

More Greenblatt positions

Apple Inc.(AAPL)
$727M
2.2% of portfolio

NVIDIA Corporation(NVDA)
$715M
2.2% of portfolio

Amazon.com, Inc.(AMZN)
$163M
0.5% of portfolio

Alphabet Inc.(GOOGL)
$155M
0.5% of portfolio

Snowflake Inc.(SNOW)
$150M
0.5% of portfolio

Common questions

Does Joel Greenblatt own RBLX?

Yes. As of Q1 2026, Joel Greenblatt disclosed 150K shares of RBLX, worth $8.5M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Joel Greenblatt buy RBLX?

Joel Greenblatt first disclosed a RBLX position in Q2 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Joel Greenblatt sell RBLX?

The quarter-by-quarter table above shows each sale and reduction Joel Greenblatt disclosed in RBLX. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of RBLX does Joel Greenblatt own?

Joel Greenblatt disclosed 150K shares of RBLX as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Joel Greenblatt pay for RBLX?

Joel Greenblatt's estimated average buy price for RBLX is $48.09, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.