ARB vs. FLUD

Last updated Jun 24, 2026

ARB (AltShares Merger Arbitrage ETF) and FLUD (Franklin Ultra Short Bond ETF) are both exchange-traded funds - ARB is a Hedge Fund fund tracking the Water Island Merger Arbitrage USD Hedged Index, while FLUD is a Ultrashort Bond fund actively managed by Franklin Templeton. ARB is passively managed, while FLUD is actively managed. Over the past 5 years, ARB returned 4.01%/yr vs 3.65%/yr for FLUD. At a correlation of -0.01, they often move in opposite directions. ARB charges 0.87%/yr vs 0.15%/yr for FLUD.

Performance

ARB vs. FLUD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AltShares Merger Arbitrage ETF (ARB) and Franklin Ultra Short Bond ETF (FLUD). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ARB achieves a 2.12% return, which is significantly higher than FLUD's 1.68% return.

ARB

• 1D: 0.15%
• 1M: 0.40%
• YTD: 2.12%
• 6M: 2.35%
• 1Y: 4.94%
• 3Y*: 6.14%
• 5Y*: 4.01%
• 10Y*: —

FLUD

• 1D: 0.08%
• 1M: 0.31%
• YTD: 1.68%
• 6M: 1.75%
• 1Y: 4.50%
• 3Y*: 5.25%
• 5Y*: 3.65%
• 10Y*: —

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

ARB vs. FLUD - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
ARB AltShares Merger Arbitrage ETF	2.12%	6.05%	4.07%	3.85%	2.67%	3.16%	2.83%
FLUD Franklin Ultra Short Bond ETF	1.68%	5.36%	5.44%	5.95%	0.16%	0.09%	0.71%

Correlation

The correlation between ARB and FLUD is -0.09, 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	-0.09
Correlation (3Y) Calculated over the trailing 3-year period	-0.02
Correlation (5Y) Calculated over the trailing 5-year period	-0.02
Correlation (All Time) Calculated using the full available price history since Jul 16, 2020	-0.01

Return for Risk

ARB vs. FLUD — Risk / Return Rank

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

ARB

ARB Risk / Return Rank: 67
ARB Sharpe Ratio Rank: 49
ARB Sortino Ratio Rank: 57
ARB Omega Ratio Rank: 55
ARB Calmar Ratio Rank: 86
ARB Martin Ratio Rank: 87

FLUD

FLUD Risk / Return Rank: 94
FLUD Sharpe Ratio Rank: 90
FLUD Sortino Ratio Rank: 94
FLUD Omega Ratio Rank: 93
FLUD Calmar Ratio Rank: 97
FLUD Martin Ratio Rank: 97

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.

ARB vs. FLUD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AltShares Merger Arbitrage ETF (ARB) and Franklin Ultra Short Bond ETF (FLUD). 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.

	ARB	FLUD	Difference
Sharpe ratio: Return per unit of total volatility	1.61	2.83	-1.22
Sortino ratio: Return per unit of downside risk	2.54	4.49	-1.95
Omega ratio: Gain probability vs. loss probability	1.32	1.61	-0.29
Calmar ratio: Return relative to maximum drawdown	4.62	10.33	-5.71
Martin ratio: Return relative to average drawdown	17.70	41.22	-23.52

ARB vs. FLUD - Sharpe Ratio Comparison

The current ARB Sharpe Ratio is 1.61, which is lower than the FLUD Sharpe Ratio of 2.83. The chart below compares the historical Sharpe Ratios of ARB and FLUD, 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

ARB vs. FLUD - Drawdown Comparison

The maximum ARB drawdown since its inception was -5.60%, which is greater than FLUD's maximum drawdown of -1.66%. Use the drawdown chart below to compare losses from any high point for ARB and FLUD.

Drawdown Indicators

	ARB	FLUD	Difference
Max Drawdown Largest peak-to-trough decline	-5.60%	-1.66%	-3.94%
Max Drawdown (1Y) Largest decline over 1 year	-1.07%	-0.44%	-0.63%
Max Drawdown (3Y) Largest decline over 3 years	-2.13%	-0.59%	-1.54%
Max Drawdown (5Y) Largest decline over 5 years	-5.60%	-1.66%	-3.94%
Current Drawdown Current decline from peak	-0.38%	-0.00%	-0.38%
Average Drawdown Average peak-to-trough decline	-0.94%	-0.24%	-0.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.28%	0.11%	+0.17%

Volatility

ARB vs. FLUD - Volatility Comparison

AltShares Merger Arbitrage ETF (ARB) has a higher volatility of 1.22% compared to Franklin Ultra Short Bond ETF (FLUD) at 0.39%. This indicates that ARB's price experiences larger fluctuations and is considered to be riskier than FLUD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ARB	FLUD	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.22%	0.39%	+0.83%
Volatility (6M) Calculated over the trailing 6-month period	2.63%	0.78%	+1.85%
Volatility (1Y) Calculated over the trailing 1-year period	3.10%	1.61%	+1.49%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.43%	1.34%	+3.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.40%	1.26%	+3.14%

ARB vs. FLUD - Expense Ratio Comparison

ARB has a 0.87% expense ratio, which is higher than FLUD's 0.15% expense ratio.

Dividends

ARB vs. FLUD - Dividend Comparison

ARB's dividend yield for the trailing twelve months is around 0.42%, less than FLUD's 4.26% yield.

Position	TTM	2025	2024	2023	2022	2021	2020
ARB AltShares Merger Arbitrage ETF	0.42%	0.43%	1.12%	0.00%	4.18%	0.00%	2.87%
FLUD Franklin Ultra Short Bond ETF	4.26%	4.51%	4.97%	4.72%	1.39%	0.92%	0.93%

Frequently Asked Questions

Can I hold both ARB and FLUD in my portfolio?

ARB and FLUD have a correlation of -0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ARB or FLUD?

ARB has higher volatility (1.22%) compared to FLUD (0.39%). In terms of maximum drawdown, ARB dropped -5.60% vs FLUD's -1.66%.

Which ETF is better, ARB or FLUD?

On 5-year performance, ARB leads with 4.01% vs 3.65% for FLUD. On fees, FLUD is cheaper at 0.15% per year. On volatility, FLUD has been the lower-risk option at 0.39%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ARB or FLUD?

Over the 5-year period, ARB has performed better with a 4.01% return vs 3.65%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ARB or FLUD?

FLUD is cheaper with a 0.15% expense ratio, compared with 0.87% for ARB.

Which ETF pays a higher dividend yield, ARB or FLUD?

FLUD has the higher dividend yield at 4.26%, compared with 0.42% for ARB.

What is the main difference between ARB and FLUD?

ARB is categorized as Hedge Fund, while FLUD is Ultrashort Bond. They also come from different issuers: Water Island Capital Partners LP and Franklin Templeton. Their fees differ too: 0.87% for ARB and 0.15% for FLUD.

Which has better risk-adjusted returns?

FLUD currently has the higher Sharpe Ratio (2.83 vs 1.61), 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.