RBLX vs. PULS

Last updated Jun 4, 2026

RBLX (Roblox Corporation) is a stock, while PULS (PGIM Ultra Short Bond ETF) is Ultrashort Bond fund actively managed by PGIM. Over the past 5 years, RBLX returned -15.19%/yr vs 4.12%/yr for PULS. At a 0.06 correlation, their price movements are largely independent.

Performance

RBLX vs. PULS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roblox Corporation (RBLX) and PGIM Ultra Short Bond ETF (PULS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RBLX achieves a -46.09% return, which is significantly lower than PULS's 1.73% return.

RBLX

• 1D: -2.93%
• 1M: -8.18%
• YTD: -46.09%
• 6M: -52.57%
• 1Y: -51.44%
• 3Y*: 2.69%
• 5Y*: -15.19%
• 10Y*: —

PULS

• 1D: 0.00%
• 1M: 0.36%
• YTD: 1.73%
• 6M: 2.09%
• 1Y: 4.70%
• 3Y*: 5.61%
• 5Y*: 4.12%
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

RBLX vs. PULS - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
RBLX Roblox Corporation	-46.09%	40.04%	26.55%	60.65%	-72.41%	48.43%
PULS PGIM Ultra Short Bond ETF	1.73%	4.97%	6.12%	6.26%	1.52%	0.32%

Correlation

The correlation between RBLX and PULS is 0.09, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.09
Correlation (3Y) Calculated over the trailing 3-year period	0.09
Correlation (5Y) Calculated over the trailing 5-year period	0.06
Correlation (All Time) Calculated using the full available price history since Mar 11, 2021	0.06

Return for Risk

RBLX vs. PULS — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

RBLX

RBLX Risk / Return Rank: 10
RBLX Sharpe Ratio Rank: 7
RBLX Sortino Ratio Rank: 8
RBLX Omega Ratio Rank: 9
RBLX Calmar Ratio Rank: 13
RBLX Martin Ratio Rank: 11

PULS

PULS Risk / Return Rank: 100
PULS Sharpe Ratio Rank: 99
PULS Sortino Ratio Rank: 100
PULS Omega Ratio Rank: 100
PULS Calmar Ratio Rank: 99
PULS Martin Ratio Rank: 100

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

RBLX vs. PULS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roblox Corporation (RBLX) and PGIM Ultra Short Bond ETF (PULS). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	RBLX	PULS	Difference
Sharpe ratio: Return per unit of total volatility	-0.87	11.41	-12.28
Sortino ratio: Return per unit of downside risk	-1.19	32.91	-34.10
Omega ratio: Gain probability vs. loss probability	0.85	7.59	-6.74
Calmar ratio: Return relative to maximum drawdown	-0.73	52.47	-53.20
Martin ratio: Return relative to average drawdown	-1.28	318.56	-319.84
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RBLX vs. PULS - Sharpe Ratio Comparison

The current RBLX Sharpe Ratio is -0.87, which is lower than the PULS Sharpe Ratio of 11.41. The chart below compares the historical Sharpe Ratios of RBLX and PULS, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	RBLX	PULS	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.87	11.41	-12.28
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.22	5.92	-6.14
Sharpe Ratio (All Time) Calculated using the full available price history	-0.12	2.51	-2.63

Drawdowns

RBLX vs. PULS - Drawdown Comparison

The maximum RBLX drawdown since its inception was -82.79%, which is greater than PULS's maximum drawdown of -5.85%. Use the drawdown chart below to compare losses from any high point for RBLX and PULS.

Drawdown Indicators

	RBLX	PULS	Difference
Max Drawdown Largest peak-to-trough decline	-82.79%	-5.85%	-76.94%
Max Drawdown (1Y) Largest decline over 1 year	-70.82%	-0.09%	-70.73%
Max Drawdown (3Y) Largest decline over 3 years	-70.82%	-0.34%	-70.48%
Max Drawdown (5Y) Largest decline over 5 years	-82.79%	-0.79%	-82.00%
Current Drawdown Current decline from peak	-69.14%	0.00%	-69.14%
Average Drawdown Average peak-to-trough decline	-52.96%	-0.09%	-52.87%
Ulcer Index Depth and duration of drawdowns from previous peaks	40.11%	0.01%	+40.10%

Volatility

RBLX vs. PULS - Volatility Comparison

Roblox Corporation (RBLX) has a higher volatility of 18.61% compared to PGIM Ultra Short Bond ETF (PULS) at 0.11%. This indicates that RBLX's price experiences larger fluctuations and is considered to be riskier than PULS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RBLX	PULS	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.61%	0.11%	+18.50%
Volatility (6M) Calculated over the trailing 6-month period	47.79%	0.30%	+47.49%
Volatility (1Y) Calculated over the trailing 1-year period	59.28%	0.41%	+58.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	69.22%	0.70%	+68.52%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	70.12%	1.33%	+68.79%

Dividends

RBLX vs. PULS - Dividend Comparison

RBLX has not paid dividends to shareholders, while PULS's dividend yield for the trailing twelve months is around 4.58%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
PULS PGIM Ultra Short Bond ETF	4.58%	4.78%	5.62%	5.48%	2.30%	1.19%	1.85%	2.69%	1.87%
RBLX Roblox Corporation	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RBLX and PULS in my portfolio?

RBLX and PULS have a correlation of 0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RBLX or PULS?

RBLX has higher volatility (18.61%) compared to PULS (0.11%). In terms of maximum drawdown, RBLX dropped -82.79% vs PULS's -5.85%.

Which has better risk-adjusted returns?

PULS currently has the higher Sharpe Ratio (11.41 vs -0.87), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.