PTY vs. MAIN

Last updated Jun 13, 2026

PTY (PIMCO Corporate & Income Opportunity Fund) is Corporate Bonds fund managed by PIMCO, while MAIN (Main Street Capital Corporation) is a stock. Over the past 10 years, PTY returned 8.71%/yr vs 13.19%/yr for MAIN. At a 0.25 correlation, their price movements are largely independent.

Performance

PTY vs. MAIN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PIMCO Corporate & Income Opportunity Fund (PTY) and Main Street Capital Corporation (MAIN). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PTY achieves a -3.70% return, which is significantly higher than MAIN's -10.97% return. Over the past 10 years, PTY has underperformed MAIN with an annualized return of 8.71%, while MAIN has yielded a comparatively higher 13.19% annualized return.

PTY

• 1D: 0.26%
• 1M: -1.34%
• YTD: -3.70%
• 6M: -3.85%
• 1Y: -4.53%
• 3Y*: 7.73%
• 5Y*: -0.75%
• 10Y*: 8.71%

MAIN

• 1D: 0.54%
• 1M: 2.49%
• YTD: -10.97%
• 6M: -12.92%
• 1Y: -3.94%
• 3Y*: 18.74%
• 5Y*: 12.76%
• 10Y*: 13.19%

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

PTY vs. MAIN - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PTY PIMCO Corporate & Income Opportunity Fund	-3.70%	-0.51%	19.87%	22.56%	-18.71%	0.40%	3.24%	35.36%	2.49%	26.63%
MAIN Main Street Capital Corporation	-10.97%	10.74%	47.30%	28.22%	-11.37%	48.31%	-19.54%	36.88%	-8.27%	16.62%

Correlation

The correlation between PTY and MAIN is 0.25, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.25
Correlation (3Y) Calculated over the trailing 3-year period	0.24
Correlation (5Y) Calculated over the trailing 5-year period	0.32
Correlation (10Y) Calculated over the trailing 10-year period	0.30
Correlation (All Time) Calculated using the full available price history since Oct 9, 2007	0.25

Return for Risk

PTY vs. MAIN — Risk / Return Rank

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

PTY

PTY Risk / Return Rank: 2
PTY Sharpe Ratio Rank: 2
PTY Sortino Ratio Rank: 2
PTY Omega Ratio Rank: 1
PTY Calmar Ratio Rank: 2
PTY Martin Ratio Rank: 2

MAIN

MAIN Risk / Return Rank: 34
MAIN Sharpe Ratio Rank: 36
MAIN Sortino Ratio Rank: 31
MAIN Omega Ratio Rank: 31
MAIN Calmar Ratio Rank: 38
MAIN Martin Ratio Rank: 37

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.

PTY vs. MAIN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PIMCO Corporate & Income Opportunity Fund (PTY) and Main Street Capital Corporation (MAIN). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	PTY	MAIN	Difference
Sharpe ratio: Return per unit of total volatility	-0.42	-0.16	-0.26
Sortino ratio: Return per unit of downside risk	-0.50	-0.05	-0.45
Omega ratio: Gain probability vs. loss probability	0.92	0.99	-0.07
Calmar ratio: Return relative to maximum drawdown	-0.29	-0.18	-0.12
Martin ratio: Return relative to average drawdown	-0.57	-0.35	-0.22

PTY vs. MAIN - Sharpe Ratio Comparison

The current PTY Sharpe Ratio is -0.42, which is lower than the MAIN Sharpe Ratio of -0.16. The chart below compares the historical Sharpe Ratios of PTY and MAIN, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

PTY vs. MAIN - Drawdown Comparison

The maximum PTY drawdown since its inception was -60.86%, smaller than the maximum MAIN drawdown of -64.53%. Use the drawdown chart below to compare losses from any high point for PTY and MAIN.

Drawdown Indicators

	PTY	MAIN	Difference
Max Drawdown Largest peak-to-trough decline	-60.86%	-64.53%	+3.67%
Max Drawdown (1Y) Largest decline over 1 year	-15.44%	-22.43%	+6.99%
Max Drawdown (3Y) Largest decline over 3 years	-16.04%	-22.43%	+6.39%
Max Drawdown (5Y) Largest decline over 5 years	-41.38%	-27.06%	-14.32%
Max Drawdown (10Y) Largest decline over 10 years	-46.55%	-64.53%	+17.98%
Current Drawdown Current decline from peak	-12.60%	-18.28%	+5.68%
Average Drawdown Average peak-to-trough decline	-8.61%	-7.31%	-1.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.89%	11.18%	-3.29%

Volatility

PTY vs. MAIN - Volatility Comparison

The current volatility for PIMCO Corporate & Income Opportunity Fund (PTY) is 2.64%, while Main Street Capital Corporation (MAIN) has a volatility of 5.82%. This indicates that PTY experiences smaller price fluctuations and is considered to be less risky than MAIN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PTY	MAIN	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.64%	5.82%	-3.18%
Volatility (6M) Calculated over the trailing 6-month period	7.49%	20.12%	-12.63%
Volatility (1Y) Calculated over the trailing 1-year period	10.80%	24.84%	-14.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.39%	21.57%	-4.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.19%	27.30%	-6.11%

Dividends

PTY vs. MAIN - Dividend Comparison

PTY's dividend yield for the trailing twelve months is around 12.15%, more than MAIN's 8.25% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MAIN Main Street Capital Corporation	8.25%	7.00%	7.02%	8.55%	7.97%	5.74%	6.99%	6.76%	8.43%	7.49%	7.42%	9.15%
PTY PIMCO Corporate & Income Opportunity Fund	12.15%	11.05%	9.92%	10.77%	13.12%	9.16%	8.74%	8.37%	10.63%	9.48%	12.09%	11.92%

Frequently Asked Questions

Can I hold both PTY and MAIN in my portfolio?

PTY and MAIN have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PTY or MAIN?

MAIN has higher volatility (5.82%) compared to PTY (2.64%). In terms of maximum drawdown, PTY dropped -60.86% vs MAIN's -64.53%.

Which has better risk-adjusted returns?

MAIN currently has the higher Sharpe Ratio (-0.16 vs -0.42), 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.