SERV vs. UMAC

Last updated Jun 4, 2026

SERV (Serve Robotics Inc) and UMAC (Unusual Machines, Inc) are both stocks. SERV operates in Specialty Industrial Machinery (Industrials), while UMAC operates in Computer Hardware (Technology). Over the past year, SERV returned -28.66% vs 338.60% for UMAC. At a 0.36 correlation, their price movements are largely independent.

Performance

SERV vs. UMAC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Serve Robotics Inc (SERV) and Unusual Machines, Inc (UMAC). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SERV achieves a -20.62% return, which is significantly lower than UMAC's 126.53% return.

SERV

• 1D: -9.15%
• 1M: -11.87%
• YTD: -20.62%
• 6M: -30.17%
• 1Y: -28.66%
• 3Y*: —
• 5Y*: —
• 10Y*: —

UMAC

• 1D: -13.64%
• 1M: 108.98%
• YTD: 126.53%
• 6M: 179.92%
• 1Y: 338.60%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SERV vs. UMAC - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SERV Serve Robotics Inc	-20.62%	-23.11%	-46.00%
UMAC Unusual Machines, Inc	126.53%	-24.26%	511.64%

Correlation

The correlation between SERV and UMAC is 0.53, 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	0.53
Correlation (All Time) Calculated using the full available price history since Mar 8, 2024	0.36

The correlation between SERV and UMAC shifts across timeframes, from 0.36 (all time) to 0.53 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap SERV : $620.50M UMAC : $1.39B
EPS SERV : -$2.07 UMAC : -$0.18
PS Ratio SERV : 105.14 UMAC : 52.90
PB Ratio SERV : 1.95 UMAC : 4.19
Total Revenue (TTM) SERV : $5.19M UMAC : $17.25M
Gross Profit (TTM) SERV : -$22.91M UMAC : $5.92M
EBITDA (TTM) SERV : -$138.16M UMAC : -$28.96M

Return for Risk

SERV vs. UMAC — Risk / Return Rank

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

SERV

SERV Risk / Return Rank: 27
SERV Sharpe Ratio Rank: 27
SERV Sortino Ratio Rank: 32
SERV Omega Ratio Rank: 31
SERV Calmar Ratio Rank: 23
SERV Martin Ratio Rank: 24

UMAC

UMAC Risk / Return Rank: 90
UMAC Sharpe Ratio Rank: 92
UMAC Sortino Ratio Rank: 89
UMAC Omega Ratio Rank: 83
UMAC Calmar Ratio Rank: 94
UMAC Martin Ratio Rank: 91

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.

SERV vs. UMAC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Serve Robotics Inc (SERV) and Unusual Machines, Inc (UMAC). 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.

	SERV	UMAC	Difference
Sharpe ratio: Return per unit of total volatility	-0.32	2.51	-2.83
Sortino ratio: Return per unit of downside risk	0.09	3.16	-3.07
Omega ratio: Gain probability vs. loss probability	1.01	1.34	-0.33
Calmar ratio: Return relative to maximum drawdown	-0.51	6.48	-6.99
Martin ratio: Return relative to average drawdown	-0.83	13.17	-14.00
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SERV vs. UMAC - Sharpe Ratio Comparison

The current SERV Sharpe Ratio is -0.32, which is lower than the UMAC Sharpe Ratio of 2.51. The chart below compares the historical Sharpe Ratios of SERV and UMAC, 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

	SERV	UMAC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.32	2.51	-2.83
Sharpe Ratio (All Time) Calculated using the full available price history	-0.21	1.02	-1.23

Drawdowns

SERV vs. UMAC - Drawdown Comparison

The maximum SERV drawdown since its inception was -92.72%, which is greater than UMAC's maximum drawdown of -75.61%. Use the drawdown chart below to compare losses from any high point for SERV and UMAC.

Drawdown Indicators

	SERV	UMAC	Difference
Max Drawdown Largest peak-to-trough decline	-92.72%	-75.61%	-17.11%
Max Drawdown (1Y) Largest decline over 1 year	-56.28%	-52.63%	-3.65%
Current Drawdown Current decline from peak	-67.04%	-13.64%	-53.40%
Average Drawdown Average peak-to-trough decline	-61.71%	-44.34%	-17.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	34.65%	25.86%	+8.79%

Volatility

SERV vs. UMAC - Volatility Comparison

The current volatility for Serve Robotics Inc (SERV) is 18.11%, while Unusual Machines, Inc (UMAC) has a volatility of 58.89%. This indicates that SERV experiences smaller price fluctuations and is considered to be less risky than UMAC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SERV	UMAC	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.11%	58.89%	-40.78%
Volatility (6M) Calculated over the trailing 6-month period	59.67%	98.43%	-38.76%
Volatility (1Y) Calculated over the trailing 1-year period	89.43%	137.32%	-47.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	190.06%	164.16%	+25.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	190.06%	164.16%	+25.90%

Dividends

SERV vs. UMAC - Dividend Comparison

Neither SERV nor UMAC has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both SERV and UMAC in my portfolio?

SERV and UMAC have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SERV or UMAC?

UMAC has higher volatility (58.89%) compared to SERV (18.11%). In terms of maximum drawdown, SERV dropped -92.72% vs UMAC's -75.61%.

Which has better risk-adjusted returns?

UMAC currently has the higher Sharpe Ratio (2.51 vs -0.32), 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.