LKOR vs. SPY

Last updated Apr 1, 2026

Compare and contrast key facts about FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund (LKOR) and State Street SPDR S&P 500 ETF (SPY).

LKOR and SPY are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. LKOR is a passively managed fund by Northern Trust that tracks the performance of the Northern Trust US Long Corporate Bond Quality Value Index. It was launched on Sep 24, 2015. SPY is a passively managed fund by State Street that tracks the performance of the S&P 500 Index. It was launched on Jan 22, 1993. Both LKOR and SPY are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

LKOR vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund (LKOR) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

LKOR vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LKOR FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund	-0.80%	7.04%	-1.02%	11.64%	-25.55%	-1.51%	16.00%	23.97%	-7.61%	13.87%
SPY State Street SPDR S&P 500 ETF	-4.37%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Returns By Period

In the year-to-date period, LKOR achieves a -0.80% return, which is significantly higher than SPY's -4.37% return. Over the past 10 years, LKOR has underperformed SPY with an annualized return of 2.68%, while SPY has yielded a comparatively higher 13.98% annualized return.

LKOR

• 1D: 0.89%
• 1M: -2.86%
• YTD: -0.80%
• 6M: -1.40%
• 1Y: 3.88%
• 3Y*: 3.42%
• 5Y*: -1.50%
• 10Y*: 2.68%

SPY

• 1D: 2.91%
• 1M: -4.94%
• YTD: -4.37%
• 6M: -1.82%
• 1Y: 17.59%
• 3Y*: 18.19%
• 5Y*: 11.69%
• 10Y*: 13.98%

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

LKOR vs. SPY - Expense Ratio Comparison

LKOR has a 0.22% expense ratio, which is higher than SPY's 0.09% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

LKOR

FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund

SPY

State Street SPDR S&P 500 ETF

Return for Risk

LKOR vs. SPY — Risk / Return Rank

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

LKOR

LKOR Risk / Return Rank: 24
LKOR Sharpe Ratio Rank: 23
LKOR Sortino Ratio Rank: 21
LKOR Omega Ratio Rank: 21
LKOR Calmar Ratio Rank: 32
LKOR Martin Ratio Rank: 25

SPY

SPY Risk / Return Rank: 64
SPY Sharpe Ratio Rank: 56
SPY Sortino Ratio Rank: 60
SPY Omega Ratio Rank: 65
SPY Calmar Ratio Rank: 65
SPY Martin Ratio Rank: 75

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.

LKOR vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund (LKOR) 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.

	LKOR	SPY	Difference
Sharpe ratio Return per unit of total volatility	0.38	0.93	-0.55
Sortino ratio Return per unit of downside risk	0.57	1.45	-0.88
Omega ratio Gain probability vs. loss probability	1.08	1.22	-0.15
Calmar ratio Return relative to maximum drawdown	0.77	1.53	-0.76
Martin ratio Return relative to average drawdown	1.81	7.30	-5.49
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LKOR vs. SPY - Sharpe Ratio Comparison

The current LKOR Sharpe Ratio is 0.38, which is lower than the SPY Sharpe Ratio of 0.93. The chart below compares the historical Sharpe Ratios of LKOR and SPY, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	LKOR	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.38	0.93	-0.55
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.12	0.69	-0.81
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.20	0.78	-0.58
Sharpe Ratio (All Time) Calculated using the full available price history	0.24	0.56	-0.32

Correlation

The correlation between LKOR and SPY is 0.17, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

LKOR vs. SPY - Dividend Comparison

LKOR's dividend yield for the trailing twelve months is around 5.72%, more than SPY's 1.14% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LKOR FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund	5.72%	5.57%	5.52%	4.90%	4.71%	4.73%	6.56%	3.71%	4.21%	3.77%	5.53%	1.22%
SPY State Street SPDR S&P 500 ETF	1.14%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Drawdowns

LKOR vs. SPY - Drawdown Comparison

The maximum LKOR drawdown since its inception was -34.78%, smaller than the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for LKOR and SPY.

Drawdown Indicators

	LKOR	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-34.78%	-55.19%	+20.41%
Max Drawdown (1Y) Largest decline over 1 year	-5.63%	-12.05%	+6.42%
Max Drawdown (5Y) Largest decline over 5 years	-34.78%	-24.50%	-10.28%
Max Drawdown (10Y) Largest decline over 10 years	-34.78%	-33.72%	-1.06%
Current Drawdown Current decline from peak	-14.96%	-6.24%	-8.72%
Average Drawdown Average peak-to-trough decline	-10.30%	-9.09%	-1.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.39%	2.52%	-0.13%

Volatility

LKOR vs. SPY - Volatility Comparison

The current volatility for FlexShares Credit-Scored U.S. Long Corporate Bond Index Fund (LKOR) is 3.92%, while State Street SPDR S&P 500 ETF (SPY) has a volatility of 5.31%. This indicates that LKOR 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

	LKOR	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.92%	5.31%	-1.39%
Volatility (6M) Calculated over the trailing 6-month period	5.56%	9.47%	-3.91%
Volatility (1Y) Calculated over the trailing 1-year period	10.30%	19.05%	-8.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.91%	17.06%	-4.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.22%	17.92%	-4.70%