ZSL vs. GBUG

Last updated Jun 4, 2026

ZSL (ProShares UltraShort Silver) and GBUG (Sprott Active Gold & Silver Miners ETF) are both exchange-traded funds - ZSL is a Silver fund tracking the Bloomberg Silver Subindex (-2x), while GBUG is a Gold fund actively managed by Sprott. ZSL is passively managed, while GBUG is actively managed. Over the past year, ZSL returned -92.31% vs 61.69% for GBUG. At a correlation of -0.75, they often move in opposite directions. ZSL charges 1.32%/yr vs 0.89%/yr for GBUG.

Performance

ZSL vs. GBUG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares UltraShort Silver (ZSL) and Sprott Active Gold & Silver Miners ETF (GBUG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ZSL achieves a -59.81% return, which is significantly lower than GBUG's -2.59% return.

ZSL

• 1D: 5.33%
• 1M: -6.86%
• YTD: -59.81%
• 6M: -75.78%
• 1Y: -92.31%
• 3Y*: -69.67%
• 5Y*: -51.93%
• 10Y*: -43.74%

GBUG

• 1D: -3.86%
• 1M: -0.28%
• YTD: -2.59%
• 6M: 6.69%
• 1Y: 61.69%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

ZSL vs. GBUG - Yearly Performance Comparison

	2026 (YTD)	2025
ZSL ProShares UltraShort Silver	-59.81%	-83.21%
GBUG Sprott Active Gold & Silver Miners ETF	-2.59%	119.00%

Correlation

The correlation between ZSL and GBUG is -0.75, 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	-0.75
Correlation (All Time) Calculated using the full available price history since Feb 21, 2025	-0.75

The correlation between ZSL and GBUG has been stable across timeframes, ranging from -0.75 to -0.75 - a consistent structural relationship.

Return for Risk

ZSL vs. GBUG — Risk / Return Rank

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

ZSL

ZSL Risk / Return Rank: 1
ZSL Sharpe Ratio Rank: 3
ZSL Sortino Ratio Rank: 0
ZSL Omega Ratio Rank: 0
ZSL Calmar Ratio Rank: 1
ZSL Martin Ratio Rank: 2

GBUG

GBUG Risk / Return Rank: 35
GBUG Sharpe Ratio Rank: 36
GBUG Sortino Ratio Rank: 32
GBUG Omega Ratio Rank: 36
GBUG Calmar Ratio Rank: 39
GBUG Martin Ratio Rank: 33

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.

ZSL vs. GBUG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares UltraShort Silver (ZSL) and Sprott Active Gold & Silver Miners ETF (GBUG). 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.

	ZSL	GBUG	Difference
Sharpe ratio Return per unit of total volatility	-0.77	1.30	-2.08
Sortino ratio Return per unit of downside risk	-2.38	1.72	-4.10
Omega ratio Gain probability vs. loss probability	0.74	1.24	-0.50
Calmar ratio Return relative to maximum drawdown	-0.98	1.93	-2.91
Martin ratio Return relative to average drawdown	-1.35	4.98	-6.34
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ZSL vs. GBUG - Sharpe Ratio Comparison

The current ZSL Sharpe Ratio is -0.77, which is lower than the GBUG Sharpe Ratio of 1.30. The chart below compares the historical Sharpe Ratios of ZSL and GBUG, 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

	ZSL	GBUG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.77	1.30	-2.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.70	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.67	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.67	1.71	-2.38

Drawdowns

ZSL vs. GBUG - Drawdown Comparison

The maximum ZSL drawdown since its inception was -100.00%, which is greater than GBUG's maximum drawdown of -32.10%. Use the drawdown chart below to compare losses from any high point for ZSL and GBUG.

Drawdown Indicators

	ZSL	GBUG	Difference
Max Drawdown Largest peak-to-trough decline	-100.00%	-32.10%	-67.90%
Max Drawdown (1Y) Largest decline over 1 year	-94.55%	-32.10%	-62.45%
Max Drawdown (3Y) Largest decline over 3 years	-98.40%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-99.06%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-99.82%	—	—
Current Drawdown Current decline from peak	-100.00%	-26.84%	-73.16%
Average Drawdown Average peak-to-trough decline	-96.39%	-7.62%	-88.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	68.23%	12.42%	+55.81%

Volatility

ZSL vs. GBUG - Volatility Comparison

ProShares UltraShort Silver (ZSL) has a higher volatility of 32.31% compared to Sprott Active Gold & Silver Miners ETF (GBUG) at 15.39%. This indicates that ZSL's price experiences larger fluctuations and is considered to be riskier than GBUG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ZSL	GBUG	Difference
Volatility (1M) Calculated over the trailing 1-month period	32.31%	15.39%	+16.92%
Volatility (6M) Calculated over the trailing 6-month period	105.86%	39.40%	+66.46%
Volatility (1Y) Calculated over the trailing 1-year period	119.48%	47.61%	+71.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	74.07%	47.38%	+26.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	65.20%	47.38%	+17.82%

ZSL vs. GBUG - Expense Ratio Comparison

ZSL has a 1.32% expense ratio, which is higher than GBUG's 0.89% expense ratio.

Dividends

ZSL vs. GBUG - Dividend Comparison

ZSL has not paid dividends to shareholders, while GBUG's dividend yield for the trailing twelve months is around 1.60%.

Position	TTM	2025
GBUG Sprott Active Gold & Silver Miners ETF	1.60%	1.56%
ZSL ProShares UltraShort Silver	0.00%	0.00%

Frequently Asked Questions

Can I hold both ZSL and GBUG in my portfolio?

ZSL and GBUG have a correlation of -0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ZSL or GBUG?

ZSL has higher volatility (32.31%) compared to GBUG (15.39%). In terms of maximum drawdown, ZSL dropped -100.00% vs GBUG's -32.10%.

Which ETF is better, ZSL or GBUG?

On 1-year performance, GBUG leads with 61.69% vs -92.31% for ZSL. On fees, GBUG is cheaper at 0.89% per year. On volatility, GBUG has been the lower-risk option at 15.39%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ZSL or GBUG?

Over the 1-year period, GBUG has performed better with a 61.69% return vs -92.31%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ZSL or GBUG?

GBUG is cheaper with a 0.89% expense ratio, compared with 1.32% for ZSL.

Which ETF pays a higher dividend yield, ZSL or GBUG?

GBUG has the higher dividend yield at 1.60%, compared with 0.00% for ZSL.

What is the main difference between ZSL and GBUG?

ZSL is categorized as Silver, while GBUG is Gold. They also come from different issuers: ProShares and Sprott. Their fees differ too: 1.32% for ZSL and 0.89% for GBUG.

Which has better risk-adjusted returns?

GBUG currently has the higher Sharpe Ratio (1.30 vs -0.77), 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.