RBLX vs SONY: which was the better investment?
Roblox Corporation against Sony Group Corporation on real daily total-return data — every dividend reinvested, from Mar 10, 2021 to Jul 15, 2026.
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Frequently asked questions
Did RBLX beat SONY?
No — measured from Mar 10, 2021 to Jul 15, 2026 with dividends reinvested, SONY came out ahead: $10,597 versus $8,095 from a $10,000 start. That gap compounds from a 1.1% annual return against -3.9%.
What would $10,000 in RBLX be worth today?
$10,000 invested in Roblox Corporation (RBLX) on Mar 10, 2021 would be worth about $8,095 as of Jul 15, 2026, a total return of -19.1% (-3.9% per year). The same $10,000 in SONY would be worth $10,597.
Which was riskier — RBLX or SONY?
RBLX swung with an annualized volatility of 70.2% and a worst peak-to-trough drop of -82.8%; SONY ran at 28.8% volatility with a -50.6% maximum drawdown. Risk-adjusted (Sharpe ratio), that is -0.08 for RBLX vs -0.03 for SONY.
What data is this comparison based on?
Daily adjusted closing prices covering Mar 10, 2021 through Jul 15, 2026 — the full period where both assets have price history. Adjusted prices include dividends and splits, so these are total returns. The page refreshes with new market data every day.
Can I change the dates, amounts, or add monthly investing?
Yes — the interactive tool on this page is pre-loaded with RBLX vs SONY. You can set any start and end date, change the starting amount, add monthly contributions, or build a multi-asset portfolio and compare it against any benchmark.