GBDC vs. CLOA

Last updated Jun 4, 2026

GBDC (Golub Capital BDC, Inc.) is a stock, while CLOA (BlackRock AAA CLO ETF) is CLO fund actively managed by BlackRock. Over the past 3 years, GBDC returned 10.09%/yr vs 6.74%/yr for CLOA. At a 0.05 correlation, their price movements are largely independent.

Performance

GBDC vs. CLOA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Golub Capital BDC, Inc. (GBDC) and BlackRock AAA CLO ETF (CLOA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GBDC achieves a -2.28% return, which is significantly lower than CLOA's 2.06% return.

GBDC

• 1D: -2.79%
• 1M: -5.70%
• YTD: -2.28%
• 6M: -3.57%
• 1Y: -4.31%
• 3Y*: 10.09%
• 5Y*: 5.94%
• 10Y*: 6.32%

CLOA

• 1D: 0.02%
• 1M: 0.44%
• YTD: 2.06%
• 6M: 2.51%
• 1Y: 5.28%
• 3Y*: 6.74%
• 5Y*: —
• 10Y*: —

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

GBDC vs. CLOA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
GBDC Golub Capital BDC, Inc.	-2.28%	-0.50%	13.57%	21.50%
CLOA BlackRock AAA CLO ETF	2.06%	5.44%	7.25%	8.38%

Correlation

The correlation between GBDC and CLOA is 0.06, 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	0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.07
Correlation (All Time) Calculated using the full available price history since Jan 13, 2023	0.05

Return for Risk

GBDC vs. CLOA — Risk / Return Rank

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

GBDC

GBDC Risk / Return Rank: 29
GBDC Sharpe Ratio Rank: 31
GBDC Sortino Ratio Rank: 26
GBDC Omega Ratio Rank: 26
GBDC Calmar Ratio Rank: 33
GBDC Martin Ratio Rank: 31

CLOA

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

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.

GBDC vs. CLOA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Golub Capital BDC, Inc. (GBDC) and BlackRock AAA CLO ETF (CLOA). 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.

	GBDC	CLOA	Difference
Sharpe ratio: Return per unit of total volatility	-0.23	7.45	-7.68
Sortino ratio: Return per unit of downside risk	-0.19	13.98	-14.17
Omega ratio: Gain probability vs. loss probability	0.98	3.34	-2.36
Calmar ratio: Return relative to maximum drawdown	-0.24	30.02	-30.25
Martin ratio: Return relative to average drawdown	-0.51	150.47	-150.98
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GBDC vs. CLOA - Sharpe Ratio Comparison

The current GBDC Sharpe Ratio is -0.23, which is lower than the CLOA Sharpe Ratio of 7.45. The chart below compares the historical Sharpe Ratios of GBDC and CLOA, 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

	GBDC	CLOA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.23	7.45	-7.68
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.35	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.29	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	5.22	-4.83

Drawdowns

GBDC vs. CLOA - Drawdown Comparison

The maximum GBDC drawdown since its inception was -47.30%, which is greater than CLOA's maximum drawdown of -1.34%. Use the drawdown chart below to compare losses from any high point for GBDC and CLOA.

Drawdown Indicators

	GBDC	CLOA	Difference
Max Drawdown Largest peak-to-trough decline	-47.30%	-1.34%	-45.96%
Max Drawdown (1Y) Largest decline over 1 year	-18.20%	-0.18%	-18.02%
Max Drawdown (3Y) Largest decline over 3 years	-18.20%	-1.13%	-17.07%
Max Drawdown (5Y) Largest decline over 5 years	-19.28%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-47.30%	—	—
Current Drawdown Current decline from peak	-9.53%	0.00%	-9.53%
Average Drawdown Average peak-to-trough decline	-6.13%	-0.05%	-6.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.47%	0.04%	+8.43%

Volatility

GBDC vs. CLOA - Volatility Comparison

Golub Capital BDC, Inc. (GBDC) has a higher volatility of 5.75% compared to BlackRock AAA CLO ETF (CLOA) at 0.15%. This indicates that GBDC's price experiences larger fluctuations and is considered to be riskier than CLOA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GBDC	CLOA	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.75%	0.15%	+5.60%
Volatility (6M) Calculated over the trailing 6-month period	15.62%	0.48%	+15.14%
Volatility (1Y) Calculated over the trailing 1-year period	18.98%	0.71%	+18.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.17%	1.32%	+15.85%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.54%	1.32%	+20.22%

Dividends

GBDC vs. CLOA - Dividend Comparison

GBDC's dividend yield for the trailing twelve months is around 11.63%, more than CLOA's 4.96% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CLOA BlackRock AAA CLO ETF	4.96%	5.35%	6.01%	5.88%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
GBDC Golub Capital BDC, Inc.	11.63%	11.50%	12.73%	10.00%	9.35%	7.58%	8.44%	7.70%	8.49%	7.47%	8.32%	7.70%

Frequently Asked Questions

Can I hold both GBDC and CLOA in my portfolio?

GBDC and CLOA have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GBDC or CLOA?

GBDC has higher volatility (5.75%) compared to CLOA (0.15%). In terms of maximum drawdown, GBDC dropped -47.30% vs CLOA's -1.34%.

Which has better risk-adjusted returns?

CLOA currently has the higher Sharpe Ratio (7.45 vs -0.23), 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.