RZB vs. SPY

Last updated Jun 5, 2026

RZB (Reinsurance Group of America, Inc.) is a stock, while SPY (State Street SPDR S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 5 years, RZB returned 3.71%/yr vs 13.91%/yr for SPY. At a 0.28 correlation, their price movements are largely independent.

Performance

RZB vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Reinsurance Group of America, Inc. (RZB) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RZB achieves a 4.93% return, which is significantly lower than SPY's 11.33% return.

RZB

• 1D: 0.00%
• 1M: 1.84%
• YTD: 4.93%
• 6M: 4.77%
• 1Y: 9.24%
• 3Y*: 6.61%
• 5Y*: 3.71%
• 10Y*: —

SPY

• 1D: 0.38%
• 1M: 4.60%
• YTD: 11.33%
• 6M: 11.25%
• 1Y: 28.50%
• 3Y*: 22.58%
• 5Y*: 13.91%
• 10Y*: 15.48%

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

RZB vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RZB Reinsurance Group of America, Inc.	4.93%	6.95%	3.03%	15.77%	-16.65%	6.71%	8.22%	26.06%	-11.03%	9.26%
SPY State Street SPDR S&P 500 ETF	11.33%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between RZB and SPY is 0.14, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.14
Correlation (3Y) Calculated over the trailing 3-year period	0.21
Correlation (5Y) Calculated over the trailing 5-year period	0.31
Correlation (All Time) Calculated using the full available price history since Jun 14, 2016	0.28

The correlation between RZB and SPY shifts across timeframes, from 0.14 (1 year) to 0.31 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

RZB vs. SPY — Risk / Return Rank

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

RZB

RZB Risk / Return Rank: 97
RZB Sharpe Ratio Rank: 94
RZB Sortino Ratio Rank: 97
RZB Omega Ratio Rank: 95
RZB Calmar Ratio Rank: 98
RZB Martin Ratio Rank: 98

SPY

SPY Risk / Return Rank: 74
SPY Sharpe Ratio Rank: 76
SPY Sortino Ratio Rank: 74
SPY Omega Ratio Rank: 75
SPY Calmar Ratio Rank: 66
SPY Martin Ratio Rank: 78

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.

RZB vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Reinsurance Group of America, Inc. (RZB) and State Street SPDR S&P 500 ETF (SPY). 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.

	RZB	SPY	Difference
Sharpe ratio: Return per unit of total volatility	2.86	2.42	+0.44
Sortino ratio: Return per unit of downside risk	4.73	3.29	+1.44
Omega ratio: Gain probability vs. loss probability	1.60	1.44	+0.16
Calmar ratio: Return relative to maximum drawdown	12.17	3.22	+8.95
Martin ratio: Return relative to average drawdown	37.29	14.99	+22.30
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RZB vs. SPY - Sharpe Ratio Comparison

The current RZB Sharpe Ratio is 2.86, which is comparable to the SPY Sharpe Ratio of 2.42. The chart below compares the historical Sharpe Ratios of RZB and SPY, 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

	RZB	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.86	2.42	+0.44
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.40	0.82	-0.42
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.27	0.59	-0.32

Drawdowns

RZB vs. SPY - Drawdown Comparison

The maximum RZB drawdown since its inception was -48.64%, smaller than the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for RZB and SPY.

Drawdown Indicators

	RZB	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-48.64%	-55.19%	+6.55%
Max Drawdown (1Y) Largest decline over 1 year	-0.76%	-8.88%	+8.12%
Max Drawdown (3Y) Largest decline over 3 years	-7.53%	-18.76%	+11.23%
Max Drawdown (5Y) Largest decline over 5 years	-18.92%	-24.50%	+5.58%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.72%	—
Current Drawdown Current decline from peak	0.00%	-0.33%	+0.33%
Average Drawdown Average peak-to-trough decline	-4.63%	-9.05%	+4.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.25%	1.91%	-1.66%

Volatility

RZB vs. SPY - Volatility Comparison

The current volatility for Reinsurance Group of America, Inc. (RZB) is 1.10%, while State Street SPDR S&P 500 ETF (SPY) has a volatility of 2.79%. This indicates that RZB experiences smaller price fluctuations and is considered to be less risky than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RZB	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.10%	2.79%	-1.69%
Volatility (6M) Calculated over the trailing 6-month period	2.21%	8.91%	-6.70%
Volatility (1Y) Calculated over the trailing 1-year period	3.24%	11.82%	-8.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.35%	17.05%	-7.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.19%	17.93%	+0.26%

Dividends

RZB vs. SPY - Dividend Comparison

RZB's dividend yield for the trailing twelve months is around 5.68%, more than SPY's 0.98% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RZB Reinsurance Group of America, Inc.	5.68%	5.79%	5.85%	5.68%	6.22%	4.90%	4.97%	5.10%	6.10%	2.57%	2.84%	0.00%
SPY State Street SPDR S&P 500 ETF	0.98%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Frequently Asked Questions

Can I hold both RZB and SPY in my portfolio?

RZB and SPY have a correlation of 0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RZB or SPY?

SPY has higher volatility (2.79%) compared to RZB (1.10%). In terms of maximum drawdown, RZB dropped -48.64% vs SPY's -55.19%.

Which has better risk-adjusted returns?

RZB currently has the higher Sharpe Ratio (2.86 vs 2.42), 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.