SPXU vs. PDM

Last updated Jul 17, 2026

SPXU (ProShares UltraPro Short S&P500) is S&P 500 fund tracking the S&P 500 Index (-300%), while PDM (Piedmont Office Realty Trust, Inc.) is a stock. Over the past 10 years, SPXU returned -41.20%/yr vs -2.53%/yr for PDM. At a correlation of -0.48, they often move in opposite directions.

Performance

SPXU vs. PDM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares UltraPro Short S&P500 (SPXU) and Piedmont Office Realty Trust, Inc. (PDM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SPXU achieves a -25.00% return, which is significantly lower than PDM's 18.47% return. Over the past 10 years, SPXU has underperformed PDM with an annualized return of -41.20%, while PDM has yielded a comparatively higher -2.53% annualized return.

SPXU

• 1D: 1.61%
• 1M: -0.30%
• 6M: -21.86%
• YTD: -25.00%
• 1Y: -41.21%
• 3Y*: -39.91%
• 5Y*: -33.74%
• 10Y*: -41.20%

PDM

• 1D: 2.07%
• 1M: 7.27%
• 6M: 12.91%
• YTD: 18.47%
• 1Y: 32.62%
• 3Y*: 12.84%
• 5Y*: -7.61%
• 10Y*: -2.53%

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

SPXU vs. PDM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SPXU ProShares UltraPro Short S&P500	-25.00%	-41.73%	-43.31%	-46.02%	36.05%	-57.94%	-70.39%	-56.27%	3.97%	-44.23%
PDM Piedmont Office Realty Trust, Inc.	18.47%	-7.26%	37.18%	-14.77%	-46.76%	19.86%	-23.46%	35.96%	-9.09%	0.14%

Correlation

The correlation between SPXU and PDM is -0.23, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.23
Correlation (3Y) Calculated over the trailing 3-year period	-0.40
Correlation (5Y) Calculated over the trailing 5-year period	-0.47
Correlation (10Y) Calculated over the trailing 10-year period	-0.45
Correlation (All Time) Calculated using the full available price history since Feb 10, 2010	-0.48

Over the past year, the inverse relationship between SPXU and PDM has weakened: their correlation has moved from -0.48 to -0.23, meaning they move in opposite directions less often than they have historically.

Return for Risk

SPXU vs. PDM — Risk / Return Rank

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

SPXU

SPXU Risk / Return Rank: 1
SPXU Sharpe Ratio Rank: 1
SPXU Sortino Ratio Rank: 1
SPXU Omega Ratio Rank: 1
SPXU Calmar Ratio Rank: 1
SPXU Martin Ratio Rank: 0

PDM

PDM Risk / Return Rank: 71
PDM Sharpe Ratio Rank: 76
PDM Sortino Ratio Rank: 70
PDM Omega Ratio Rank: 69
PDM Calmar Ratio Rank: 67
PDM Martin Ratio Rank: 71

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.

SPXU vs. PDM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares UltraPro Short S&P500 (SPXU) and Piedmont Office Realty Trust, Inc. (PDM). 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.

	SPXU	PDM	Difference
Sharpe ratio: Return per unit of total volatility	-1.10	1.03	-2.13
Sortino ratio: Return per unit of downside risk	-1.71	1.53	-3.23
Omega ratio: Gain probability vs. loss probability	0.81	1.19	-0.38
Calmar ratio: Return relative to maximum drawdown	-0.94	1.11	-2.05
Martin ratio: Return relative to average drawdown	-1.61	2.98	-4.59

SPXU vs. PDM - Sharpe Ratio Comparison

The current SPXU Sharpe Ratio is -1.10, which is lower than the PDM Sharpe Ratio of 1.03. The chart below compares the historical Sharpe Ratios of SPXU and PDM, 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

SPXU vs. PDM - Drawdown Comparison

The maximum SPXU drawdown since its inception was -99.99%, which is greater than PDM's maximum drawdown of -73.72%. Use the drawdown chart below to compare losses from any high point for SPXU and PDM.

Drawdown Indicators

	SPXU	PDM	Difference
Max Drawdown Largest peak-to-trough decline	-99.99%	-73.72%	-26.27%
Max Drawdown (1Y) Largest decline over 1 year	-43.83%	-29.47%	-14.36%
Max Drawdown (3Y) Largest decline over 3 years	-84.36%	-46.45%	-37.91%
Max Drawdown (5Y) Largest decline over 5 years	-90.23%	-70.38%	-19.85%
Max Drawdown (10Y) Largest decline over 10 years	-99.56%	-73.72%	-25.84%
Current Drawdown Current decline from peak	-99.99%	-43.31%	-56.68%
Average Drawdown Average peak-to-trough decline	-93.36%	-22.34%	-71.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	25.60%	10.97%	+14.63%

Volatility

SPXU vs. PDM - Volatility Comparison

ProShares UltraPro Short S&P500 (SPXU) and Piedmont Office Realty Trust, Inc. (PDM) have volatilities of 10.37% and 9.97%, 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

	SPXU	PDM	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.37%	9.97%	+0.40%
Volatility (6M) Calculated over the trailing 6-month period	30.00%	25.50%	+4.50%
Volatility (1Y) Calculated over the trailing 1-year period	37.51%	31.78%	+5.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	50.67%	36.13%	+14.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	53.33%	34.45%	+18.88%

Dividends

SPXU vs. PDM - Dividend Comparison

SPXU's dividend yield for the trailing twelve months is around 6.92%, while PDM has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PDM Piedmont Office Realty Trust, Inc.	0.00%	1.50%	5.46%	9.42%	9.16%	5.71%	5.18%	3.78%	4.93%	6.83%	4.02%	4.45%
SPXU ProShares UltraPro Short S&P500	6.92%	7.02%	9.53%	7.06%	0.39%	0.00%	0.70%	2.14%	1.41%	0.10%	0.00%	0.00%

Frequently Asked Questions

Can I hold both SPXU and PDM in my portfolio?

SPXU and PDM have a correlation of -0.23, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SPXU or PDM?

SPXU has higher volatility (10.37%) compared to PDM (9.97%). In terms of maximum drawdown, SPXU dropped -99.99% vs PDM's -73.72%.

Which has better risk-adjusted returns?

PDM currently has the higher Sharpe Ratio (1.03 vs -1.10), 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.