NMKBX vs. SSAFX

Last updated Jun 4, 2026

NMKBX (North Square McKee Bond Fund) and SSAFX (State Street Aggregate Bond Index Portfolio) are both Intermediate Core Bond funds. Over the past 5 years, NMKBX returned 0.94%/yr vs 0.09%/yr for SSAFX. Their correlation of 0.95 suggests significant overlap in exposure. NMKBX charges 0.28%/yr vs 0.02%/yr for SSAFX.

Performance

NMKBX vs. SSAFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in North Square McKee Bond Fund (NMKBX) and State Street Aggregate Bond Index Portfolio (SSAFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NMKBX achieves a 0.49% return, which is significantly higher than SSAFX's 0.42% return.

NMKBX

• 1D: 0.00%
• 1M: 0.47%
• YTD: 0.49%
• 6M: 0.33%
• 1Y: 5.55%
• 3Y*: 4.50%
• 5Y*: 0.94%
• 10Y*: —

SSAFX

• 1D: 0.05%
• 1M: 0.49%
• YTD: 0.42%
• 6M: 0.33%
• 1Y: 5.39%
• 3Y*: 3.90%
• 5Y*: 0.09%
• 10Y*: 27.83%

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

NMKBX vs. SSAFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
NMKBX North Square McKee Bond Fund	0.49%	7.26%	1.78%	5.96%	-9.46%	-1.24%	0.10%
SSAFX State Street Aggregate Bond Index Portfolio	0.42%	6.81%	1.34%	5.61%	-13.30%	-1.72%	0.16%

Correlation

The correlation between NMKBX and SSAFX is 0.97 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.97
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (All Time) Calculated using the full available price history since Dec 30, 2020	0.95

The correlation between NMKBX and SSAFX has been stable across timeframes, ranging from 0.95 to 0.97 - a consistent structural relationship.

Return for Risk

NMKBX vs. SSAFX — Risk / Return Rank

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

NMKBX

NMKBX Risk / Return Rank: 27
NMKBX Sharpe Ratio Rank: 27
NMKBX Sortino Ratio Rank: 28
NMKBX Omega Ratio Rank: 25
NMKBX Calmar Ratio Rank: 31
NMKBX Martin Ratio Rank: 26

SSAFX

SSAFX Risk / Return Rank: 26
SSAFX Sharpe Ratio Rank: 26
SSAFX Sortino Ratio Rank: 27
SSAFX Omega Ratio Rank: 24
SSAFX Calmar Ratio Rank: 27
SSAFX Martin Ratio Rank: 24

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.

NMKBX vs. SSAFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for North Square McKee Bond Fund (NMKBX) and State Street Aggregate Bond Index Portfolio (SSAFX). 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.

	NMKBX	SSAFX	Difference
Sharpe ratio Return per unit of total volatility	1.48	1.45	+0.04
Sortino ratio Return per unit of downside risk	2.21	2.17	+0.04
Omega ratio Gain probability vs. loss probability	1.26	1.26	+0.01
Calmar ratio Return relative to maximum drawdown	2.07	1.96	+0.11
Martin ratio Return relative to average drawdown	6.39	6.00	+0.39
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NMKBX vs. SSAFX - Sharpe Ratio Comparison

The current NMKBX Sharpe Ratio is 1.48, which is comparable to the SSAFX Sharpe Ratio of 1.45. The chart below compares the historical Sharpe Ratios of NMKBX and SSAFX, 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

	NMKBX	SSAFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.48	1.45	+0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.17	0.01	+0.16
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.10	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.14	0.09	+0.05

Drawdowns

NMKBX vs. SSAFX - Drawdown Comparison

The maximum NMKBX drawdown since its inception was -14.25%, smaller than the maximum SSAFX drawdown of -18.74%. Use the drawdown chart below to compare losses from any high point for NMKBX and SSAFX.

Drawdown Indicators

	NMKBX	SSAFX	Difference
Max Drawdown Largest peak-to-trough decline	-14.25%	-18.74%	+4.49%
Max Drawdown (1Y) Largest decline over 1 year	-2.69%	-2.74%	+0.05%
Max Drawdown (3Y) Largest decline over 3 years	-6.84%	-6.09%	-0.75%
Max Drawdown (5Y) Largest decline over 5 years	-14.25%	-18.10%	+3.85%
Max Drawdown (10Y) Largest decline over 10 years	—	-18.74%	—
Current Drawdown Current decline from peak	-1.34%	-2.62%	+1.28%
Average Drawdown Average peak-to-trough decline	-4.53%	-4.41%	-0.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.87%	0.90%	-0.03%

Volatility

NMKBX vs. SSAFX - Volatility Comparison

North Square McKee Bond Fund (NMKBX) and State Street Aggregate Bond Index Portfolio (SSAFX) have volatilities of 1.25% and 1.29%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NMKBX	SSAFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.25%	1.29%	-0.04%
Volatility (6M) Calculated over the trailing 6-month period	2.66%	2.65%	+0.01%
Volatility (1Y) Calculated over the trailing 1-year period	3.77%	3.74%	+0.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.42%	5.95%	-0.53%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.24%	277.51%	-272.27%

NMKBX vs. SSAFX - Expense Ratio Comparison

NMKBX has a 0.28% expense ratio, which is higher than SSAFX's 0.02% expense ratio.

Dividends

NMKBX vs. SSAFX - Dividend Comparison

NMKBX's dividend yield for the trailing twelve months is around 4.19%, which matches SSAFX's 4.16% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NMKBX North Square McKee Bond Fund	4.19%	4.25%	4.19%	3.54%	2.12%	0.77%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SSAFX State Street Aggregate Bond Index Portfolio	4.16%	3.70%	3.76%	3.16%	2.49%	1.90%	2.41%	2.88%	2.82%	2.42%	2.21%	3.21%

Frequently Asked Questions

Can I hold both NMKBX and SSAFX in my portfolio?

With a correlation of 0.97, NMKBX and SSAFX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, NMKBX or SSAFX?

SSAFX has higher volatility (1.29%) compared to NMKBX (1.25%). In terms of maximum drawdown, NMKBX dropped -14.25% vs SSAFX's -18.74%.

Which has better risk-adjusted returns?

NMKBX currently has the higher Sharpe Ratio (1.48 vs 1.45), 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.