SEMI vs. RBOT

Last updated Jun 3, 2026

SEMI (Columbia Select Technology ETF) is Semiconductors fund actively managed by Columbia, while RBOT (Vicarious Surgical Inc.) is a stock. Over the past 3 years, SEMI returned 30.48%/yr vs -77.57%/yr for RBOT. At a 0.26 correlation, their price movements are largely independent.

Performance

SEMI vs. RBOT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Select Technology ETF (SEMI) and Vicarious Surgical Inc. (RBOT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SEMI achieves a 32.72% return, which is significantly higher than RBOT's -65.67% return.

SEMI

• 1D: 1.77%
• 1M: 16.66%
• YTD: 32.72%
• 6M: 31.75%
• 1Y: 67.04%
• 3Y*: 30.48%
• 5Y*: —
• 10Y*: —

RBOT

• 1D: -8.02%
• 1M: -17.13%
• YTD: -65.67%
• 6M: -71.35%
• 1Y: -90.11%
• 3Y*: -77.57%
• 5Y*: -69.81%
• 10Y*: —

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

SEMI vs. RBOT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
SEMI Columbia Select Technology ETF	32.72%	24.91%	15.87%	45.37%	-21.87%
RBOT Vicarious Surgical Inc.	-65.67%	-83.51%	19.63%	-81.85%	-58.94%

Correlation

The correlation between SEMI and RBOT is 0.19, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.19
Correlation (3Y) Calculated over the trailing 3-year period	0.19
Correlation (All Time) Calculated using the full available price history since Mar 31, 2022	0.26

Return for Risk

SEMI vs. RBOT — Risk / Return Rank

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

SEMI

SEMI Risk / Return Rank: 84
SEMI Sharpe Ratio Rank: 89
SEMI Sortino Ratio Rank: 81
SEMI Omega Ratio Rank: 80
SEMI Calmar Ratio Rank: 86
SEMI Martin Ratio Rank: 85

RBOT

RBOT Risk / Return Rank: 6
RBOT Sharpe Ratio Rank: 8
RBOT Sortino Ratio Rank: 11
RBOT Omega Ratio Rank: 2
RBOT Calmar Ratio Rank: 8
RBOT Martin Ratio Rank: 4

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.

SEMI vs. RBOT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Select Technology ETF (SEMI) and Vicarious Surgical Inc. (RBOT). 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.

	SEMI	RBOT	Difference
Sharpe ratio Return per unit of total volatility	3.05	-0.82	+3.87
Sortino ratio Return per unit of downside risk	3.69	-1.02	+4.70
Omega ratio Gain probability vs. loss probability	1.49	0.72	+0.76
Calmar ratio Return relative to maximum drawdown	4.77	-0.86	+5.63
Martin ratio Return relative to average drawdown	17.95	-1.53	+19.48
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SEMI vs. RBOT - Sharpe Ratio Comparison

The current SEMI Sharpe Ratio is 3.05, which is higher than the RBOT Sharpe Ratio of -0.82. The chart below compares the historical Sharpe Ratios of SEMI and RBOT, 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

	SEMI	RBOT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.05	-0.82	+3.87
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	-0.44	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.65	-0.42	+1.07

Drawdowns

SEMI vs. RBOT - Drawdown Comparison

The maximum SEMI drawdown since its inception was -32.93%, smaller than the maximum RBOT drawdown of -99.83%. Use the drawdown chart below to compare losses from any high point for SEMI and RBOT.

Drawdown Indicators

	SEMI	RBOT	Difference
Max Drawdown Largest peak-to-trough decline	-32.93%	-99.83%	+66.90%
Max Drawdown (1Y) Largest decline over 1 year	-14.41%	-94.35%	+79.94%
Max Drawdown (3Y) Largest decline over 3 years	-32.93%	-98.92%	+65.99%
Max Drawdown (5Y) Largest decline over 5 years	—	-99.83%	—
Current Drawdown Current decline from peak	0.00%	-99.83%	+99.83%
Average Drawdown Average peak-to-trough decline	-9.29%	-69.74%	+60.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.83%	31.18%	-27.35%

Volatility

SEMI vs. RBOT - Volatility Comparison

The current volatility for Columbia Select Technology ETF (SEMI) is 6.81%, while Vicarious Surgical Inc. (RBOT) has a volatility of 17.88%. This indicates that SEMI experiences smaller price fluctuations and is considered to be less risky than RBOT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SEMI	RBOT	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.81%	17.88%	-11.07%
Volatility (6M) Calculated over the trailing 6-month period	17.41%	82.14%	-64.73%
Volatility (1Y) Calculated over the trailing 1-year period	22.14%	124.29%	-102.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	31.59%	114.09%	-82.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.59%	106.23%	-74.64%

Dividends

SEMI vs. RBOT - Dividend Comparison

SEMI's dividend yield for the trailing twelve months is around 3.38%, while RBOT has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022
RBOT Vicarious Surgical Inc.	0.00%	0.00%	0.00%	0.00%	0.00%
SEMI Columbia Select Technology ETF	3.38%	4.48%	0.96%	0.87%	0.67%

Frequently Asked Questions

Can I hold both SEMI and RBOT in my portfolio?

SEMI and RBOT have a correlation of 0.19, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SEMI or RBOT?

RBOT has higher volatility (17.88%) compared to SEMI (6.81%). In terms of maximum drawdown, SEMI dropped -32.93% vs RBOT's -99.83%.

Which has better risk-adjusted returns?

SEMI currently has the higher Sharpe Ratio (3.05 vs -0.82), 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.