BLCN vs. ROBO

Last updated Jun 23, 2026

BLCN (Siren ETF Trust Siren Nasdaq NexGen Economy ETF) and ROBO (ROBO Global Robotics & Automation Index ETF) are both exchange-traded funds - BLCN is a Large Cap Blend Equities fund tracking the Siren NASDAQ Blockchain Economy Index, while ROBO is a Robotics fund tracking the ROBO Global Robotics and Automation TR Index. Both are passively managed. Over the past 5 years, BLCN returned -9.28%/yr vs 6.41%/yr for ROBO. A 0.69 correlation means they provide meaningful diversification when combined. BLCN charges 0.68%/yr vs 0.95%/yr for ROBO.

Performance

BLCN vs. ROBO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Siren ETF Trust Siren Nasdaq NexGen Economy ETF (BLCN) and ROBO Global Robotics & Automation Index ETF (ROBO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BLCN achieves a 12.69% return, which is significantly lower than ROBO's 25.02% return.

BLCN

• 1D: 1.09%
• 1M: 9.96%
• YTD: 12.69%
• 6M: 9.05%
• 1Y: 25.80%
• 3Y*: 9.95%
• 5Y*: -9.28%
• 10Y*: —

ROBO

• 1D: 0.76%
• 1M: -0.74%
• YTD: 25.02%
• 6M: 24.43%
• 1Y: 54.66%
• 3Y*: 15.63%
• 5Y*: 6.41%
• 10Y*: 13.65%

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

BLCN vs. ROBO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
BLCN Siren ETF Trust Siren Nasdaq NexGen Economy ETF	12.69%	-3.69%	5.62%	21.09%	-51.76%	4.86%	60.60%	33.94%	-18.99%
ROBO ROBO Global Robotics & Automation Index ETF	25.02%	23.71%	-1.28%	23.74%	-33.92%	15.34%	45.26%	29.51%	-27.23%

Correlation

The correlation between BLCN and ROBO is 0.52, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.52
Correlation (3Y) Calculated over the trailing 3-year period	0.52
Correlation (5Y) Calculated over the trailing 5-year period	0.63
Correlation (All Time) Calculated using the full available price history since Jan 17, 2018	0.69

The correlation between BLCN and ROBO shifts across timeframes, from 0.52 (3 years) to 0.69 (all time), reflecting how their relationship changes across market environments.

BLCN vs. ROBO - Sectors Allocation Comparison

Sectors	BLCN	ROBO
Financial Services	45.0%	1.9%
Technology	25.2%	43.6%
Communication Services	7.5%	1.4%
Industrials	4.6%	45.3%
Utilities	4.2%	-
Consumer Cyclical	2.4%	3.1%
Basic Materials	1.3%	-
Consumer Defensive	-	1.3%
Energy	-	-
Healthcare	-	4.6%
Real Estate	-	-

Return for Risk

BLCN vs. ROBO — Risk / Return Rank

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

BLCN

BLCN Risk / Return Rank: 20
BLCN Sharpe Ratio Rank: 21
BLCN Sortino Ratio Rank: 22
BLCN Omega Ratio Rank: 21
BLCN Calmar Ratio Rank: 20
BLCN Martin Ratio Rank: 17

ROBO

ROBO Risk / Return Rank: 67
ROBO Sharpe Ratio Rank: 72
ROBO Sortino Ratio Rank: 65
ROBO Omega Ratio Rank: 64
ROBO Calmar Ratio Rank: 66
ROBO Martin Ratio Rank: 67

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.

BLCN vs. ROBO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Siren ETF Trust Siren Nasdaq NexGen Economy ETF (BLCN) and ROBO Global Robotics & Automation Index ETF (ROBO). 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.

	BLCN	ROBO	Difference
Sharpe ratio: Return per unit of total volatility	0.71	2.23	-1.52
Sortino ratio: Return per unit of downside risk	1.20	2.89	-1.69
Omega ratio: Gain probability vs. loss probability	1.15	1.37	-0.23
Calmar ratio: Return relative to maximum drawdown	0.88	3.17	-2.29
Martin ratio: Return relative to average drawdown	1.85	11.92	-10.07

BLCN vs. ROBO - Sharpe Ratio Comparison

The current BLCN Sharpe Ratio is 0.71, which is lower than the ROBO Sharpe Ratio of 2.23. The chart below compares the historical Sharpe Ratios of BLCN and ROBO, 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

BLCN vs. ROBO - Drawdown Comparison

The maximum BLCN drawdown since its inception was -67.51%, which is greater than ROBO's maximum drawdown of -43.65%. Use the drawdown chart below to compare losses from any high point for BLCN and ROBO.

Drawdown Indicators

	BLCN	ROBO	Difference
Max Drawdown Largest peak-to-trough decline	-67.51%	-43.65%	-23.86%
Max Drawdown (1Y) Largest decline over 1 year	-29.53%	-17.35%	-12.18%
Max Drawdown (3Y) Largest decline over 3 years	-45.26%	-27.92%	-17.34%
Max Drawdown (5Y) Largest decline over 5 years	-67.51%	-43.65%	-23.86%
Max Drawdown (10Y) Largest decline over 10 years	—	-43.65%	—
Current Drawdown Current decline from peak	-45.31%	-4.08%	-41.23%
Average Drawdown Average peak-to-trough decline	-30.37%	-12.91%	-17.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.96%	4.60%	+9.36%

Volatility

BLCN vs. ROBO - Volatility Comparison

Siren ETF Trust Siren Nasdaq NexGen Economy ETF (BLCN) has a higher volatility of 13.86% compared to ROBO Global Robotics & Automation Index ETF (ROBO) at 10.76%. This indicates that BLCN's price experiences larger fluctuations and is considered to be riskier than ROBO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BLCN	ROBO	Difference
Volatility (1M) Calculated over the trailing 1-month period	13.86%	10.76%	+3.10%
Volatility (6M) Calculated over the trailing 6-month period	27.35%	19.98%	+7.37%
Volatility (1Y) Calculated over the trailing 1-year period	36.78%	24.69%	+12.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	35.18%	23.98%	+11.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.30%	23.32%	+7.98%

BLCN vs. ROBO - Expense Ratio Comparison

BLCN has a 0.68% expense ratio, which is lower than ROBO's 0.95% expense ratio.

Dividends

BLCN vs. ROBO - Dividend Comparison

BLCN's dividend yield for the trailing twelve months is around 2.67%, more than ROBO's 0.34% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BLCN Siren ETF Trust Siren Nasdaq NexGen Economy ETF	2.67%	3.01%	0.67%	0.54%	1.28%	0.56%	0.58%	1.45%	1.16%	0.00%	0.00%	0.00%
ROBO ROBO Global Robotics & Automation Index ETF	0.34%	0.42%	0.55%	0.05%	0.00%	0.18%	0.20%	0.37%	0.37%	0.02%	0.19%	0.28%

Frequently Asked Questions

Can I hold both BLCN and ROBO in my portfolio?

BLCN and ROBO have a correlation of 0.52, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BLCN or ROBO?

BLCN has higher volatility (13.86%) compared to ROBO (10.76%). In terms of maximum drawdown, BLCN dropped -67.51% vs ROBO's -43.65%.

Which ETF is better, BLCN or ROBO?

On 5-year performance, ROBO leads with 6.41% vs -9.28% for BLCN. On fees, BLCN is cheaper at 0.68% per year. On volatility, ROBO has been the lower-risk option at 10.76%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, BLCN or ROBO?

Over the 5-year period, ROBO has performed better with a 6.41% return vs -9.28%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BLCN or ROBO?

BLCN is cheaper with a 0.68% expense ratio, compared with 0.95% for ROBO.

Which ETF pays a higher dividend yield, BLCN or ROBO?

BLCN has the higher dividend yield at 2.67%, compared with 0.34% for ROBO.

What is the main difference between BLCN and ROBO?

BLCN is categorized as Large Cap Blend Equities, while ROBO is Robotics. BLCN tracks Siren NASDAQ Blockchain Economy Index, while ROBO tracks ROBO Global Robotics and Automation TR Index. They also come from different issuers: SRN Advisors and Exchange Traded Concepts. Their fees differ too: 0.68% for BLCN and 0.95% for ROBO.

Which has better risk-adjusted returns?

ROBO currently has the higher Sharpe Ratio (2.23 vs 0.71), 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.