UMC vs. VOO

Last updated Jun 4, 2026

UMC (United Microelectronics Corporation) is a stock, while VOO (Vanguard S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, UMC returned 33.53%/yr vs 15.56%/yr for VOO. At a 0.45 correlation, their price movements are largely independent.

Performance

UMC vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in United Microelectronics Corporation (UMC) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, UMC achieves a 172.52% return, which is significantly higher than VOO's 10.91% return. Over the past 10 years, UMC has outperformed VOO with an annualized return of 33.53%, while VOO has yielded a comparatively lower 15.56% annualized return.

UMC

• 1D: -4.63%
• 1M: 65.02%
• YTD: 172.52%
• 6M: 172.87%
• 1Y: 190.23%
• 3Y*: 45.85%
• 5Y*: 23.80%
• 10Y*: 33.53%

VOO

• 1D: -0.70%
• 1M: 5.04%
• YTD: 10.91%
• 6M: 10.93%
• 1Y: 28.04%
• 3Y*: 22.44%
• 5Y*: 13.90%
• 10Y*: 15.56%

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

UMC vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
UMC United Microelectronics Corporation	172.52%	28.65%	-19.01%	39.20%	-40.32%	43.16%	230.69%	56.10%	-21.85%	39.99%
VOO Vanguard S&P 500 ETF	10.91%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between UMC and VOO is 0.41, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.41
Correlation (3Y) Calculated over the trailing 3-year period	0.49
Correlation (5Y) Calculated over the trailing 5-year period	0.55
Correlation (10Y) Calculated over the trailing 10-year period	0.48
Correlation (All Time) Calculated using the full available price history since Sep 10, 2010	0.45

The correlation between UMC and VOO shifts across timeframes, from 0.41 (1 year) to 0.55 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

UMC vs. VOO — Risk / Return Rank

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

UMC

UMC Risk / Return Rank: 95
UMC Sharpe Ratio Rank: 97
UMC Sortino Ratio Rank: 97
UMC Omega Ratio Rank: 96
UMC Calmar Ratio Rank: 93
UMC Martin Ratio Rank: 93

VOO

VOO Risk / Return Rank: 70
VOO Sharpe Ratio Rank: 71
VOO Sortino Ratio Rank: 70
VOO Omega Ratio Rank: 70
VOO Calmar Ratio Rank: 62
VOO 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.

UMC vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for United Microelectronics Corporation (UMC) and Vanguard S&P 500 ETF (VOO). 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.

	UMC	VOO	Difference
Sharpe ratio: Return per unit of total volatility	3.93	2.39	+1.55
Sortino ratio: Return per unit of downside risk	4.83	3.25	+1.57
Omega ratio: Gain probability vs. loss probability	1.61	1.43	+0.17
Calmar ratio: Return relative to maximum drawdown	6.17	3.16	+3.01
Martin ratio: Return relative to average drawdown	15.70	14.73	+0.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

UMC vs. VOO - Sharpe Ratio Comparison

The current UMC Sharpe Ratio is 3.93, which is higher than the VOO Sharpe Ratio of 2.39. The chart below compares the historical Sharpe Ratios of UMC and VOO, 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

	UMC	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.93	2.39	+1.55
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.61	0.83	-0.23
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.85	0.87	-0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.18	0.89	-0.71

Drawdowns

UMC vs. VOO - Drawdown Comparison

The maximum UMC drawdown since its inception was -72.52%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for UMC and VOO.

Drawdown Indicators

	UMC	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-72.52%	-33.99%	-38.53%
Max Drawdown (1Y) Largest decline over 1 year	-31.01%	-8.90%	-22.11%
Max Drawdown (3Y) Largest decline over 3 years	-36.00%	-18.69%	-17.31%
Max Drawdown (5Y) Largest decline over 5 years	-54.30%	-24.52%	-29.78%
Max Drawdown (10Y) Largest decline over 10 years	-54.30%	-33.99%	-20.31%
Current Drawdown Current decline from peak	-6.42%	-0.70%	-5.72%
Average Drawdown Average peak-to-trough decline	-42.57%	-3.69%	-38.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	12.18%	1.91%	+10.27%

Volatility

UMC vs. VOO - Volatility Comparison

United Microelectronics Corporation (UMC) has a higher volatility of 20.21% compared to Vanguard S&P 500 ETF (VOO) at 2.84%. This indicates that UMC's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	UMC	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	20.21%	2.84%	+17.37%
Volatility (6M) Calculated over the trailing 6-month period	42.83%	8.90%	+33.93%
Volatility (1Y) Calculated over the trailing 1-year period	48.67%	11.80%	+36.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	39.54%	16.81%	+22.73%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	39.55%	18.01%	+21.54%

Dividends

UMC vs. VOO - Dividend Comparison

UMC's dividend yield for the trailing twelve months is around 2.22%, more than VOO's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
UMC United Microelectronics Corporation	2.22%	6.06%	7.14%	6.93%	7.92%	2.44%	1.62%	3.51%	6.59%	2.41%	3.61%	3.15%
VOO Vanguard S&P 500 ETF	1.03%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both UMC and VOO in my portfolio?

UMC and VOO have a correlation of 0.41, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, UMC or VOO?

UMC has higher volatility (20.21%) compared to VOO (2.84%). In terms of maximum drawdown, UMC dropped -72.52% vs VOO's -33.99%.

Which has better risk-adjusted returns?

UMC currently has the higher Sharpe Ratio (3.93 vs 2.39), 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.