FSTR vs. SERV

Last updated Aug 1, 2026

FSTR (L.B. Foster Company) and SERV (Serve Robotics Inc.) are both stocks. Both are in the Industrials sector — FSTR in Railroads, SERV in Specialty Industrial Machinery. Over the past year, FSTR returned 84.27% vs -52.25% for SERV. Their 0.25 correlation means their historical movements had little consistent relationship.

Performance

FSTR vs. SERV - Performance Comparison

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

Returns By Period

In the year-to-date period, FSTR achieves a 52.62% return, which is significantly higher than SERV's -53.95% return.

FSTR

• 1D: -0.15%
• 1M: -3.81%
• 6M: 36.87%
• YTD: 52.62%
• 1Y: 84.27%
• 3Y*: 41.92%
• 5Y*: 17.76%
• 10Y*: 15.15%
• ALL TIME*: 6.20%

SERV

• 1D: -0.62%
• 1M: -24.25%
• 6M: -54.17%
• YTD: -53.95%
• 1Y: -52.25%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: -37.93%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
FSTR L.B. Foster Company	$3.04M	$3.01M	$4.24M
SERV Serve Robotics Inc.	$14.65M	$15.63M	$34.12M

FSTR vs. SERV - Yearly Performance Comparison

	2026 (YTD)	2025	2024
FSTR L.B. Foster Company	52.62%	0.19%	19.29%
SERV Serve Robotics Inc.	-53.95%	-23.11%	-10.00%

Correlation

The correlation between FSTR and SERV is 0.25, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.25
Correlation (All Time) Calculated using the full available price history since Mar 7, 2024	0.25

Fundamentals

Market Cap FSTR : $430.17M SERV : $318.36M
EPS FSTR : $1.04 SERV : -$1.98
PS Ratio FSTR : 0.78 SERV : 63.68
PB Ratio FSTR : 2.51 SERV : 1.13
Total Revenue (TTM) FSTR : $563.36M SERV : $5.19M
Gross Profit (TTM) FSTR : $119.30M SERV : -$22.91M
EBITDA (TTM) FSTR : $37.88M SERV : -$138.16M

Return for Risk

FSTR vs. SERV — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

FSTR

FSTR Risk / Return Rank: 92
FSTR Sharpe Ratio Rank: 90
FSTR Sortino Ratio Rank: 92
FSTR Omega Ratio Rank: 89
FSTR Calmar Ratio Rank: 95
FSTR Martin Ratio Rank: 95

SERV

SERV Risk / Return Rank: 17
SERV Sharpe Ratio Rank: 17
SERV Sortino Ratio Rank: 18
SERV Omega Ratio Rank: 21
SERV Calmar Ratio Rank: 17
SERV Martin Ratio Rank: 13

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

FSTR vs. SERV - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for L.B. Foster Company (FSTR) and Serve Robotics Inc. (SERV). 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.

	FSTR	SERV	Difference
Sharpe ratio: Return per unit of total volatility	1.84	-0.60	+2.45
Sortino ratio: Return per unit of downside risk	3.01	-0.66	+3.67
Omega ratio: Gain probability vs. loss probability	1.35	0.93	+0.42
Calmar ratio: Return relative to maximum drawdown	4.90	-0.71	+5.61
Martin ratio: Return relative to average drawdown	13.34	-1.25	+14.59

FSTR vs. SERV - Sharpe Ratio Comparison

The current FSTR Sharpe Ratio is 1.84, which is higher than the SERV Sharpe Ratio of -0.60. The chart below compares the historical Sharpe Ratios of FSTR and SERV, 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

FSTR vs. SERV - Drawdown Comparison

The maximum FSTR drawdown since its inception was -84.47%, smaller than the maximum SERV drawdown of -92.72%. Use the drawdown chart below to compare losses from any high point for FSTR and SERV.

Drawdown Indicators

	FSTR	SERV	Difference
Max Drawdown Largest peak-to-trough decline	-84.47%	-92.72%	+8.25%
Max Drawdown (1Y) Largest decline over 1 year	-15.38%	-75.28%	+59.90%
Max Drawdown (3Y) Largest decline over 3 years	-45.90%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-50.47%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-70.39%	—	—
Current Drawdown Current decline from peak	-26.98%	-80.88%	+53.90%
Average Drawdown Average peak-to-trough decline	-41.74%	-62.53%	+20.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.69%	42.53%	-36.84%

Volatility

FSTR vs. SERV - Volatility Comparison

The current volatility for L.B. Foster Company (FSTR) is 8.89%, while Serve Robotics Inc. (SERV) has a volatility of 18.88%. This indicates that FSTR experiences smaller price fluctuations and is considered to be less risky than SERV based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSTR	SERV	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.89%	18.88%	-9.99%
Volatility (6M) Calculated over the trailing 6-month period	30.05%	52.29%	-22.24%
Volatility (1Y) Calculated over the trailing 1-year period	40.97%	88.02%	-47.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	41.63%	189.41%	-147.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	47.94%	189.41%	-141.47%

Dividends

FSTR vs. SERV - Dividend Comparison

Neither FSTR nor SERV has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSTR L.B. Foster Company	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.88%	1.17%
SERV Serve Robotics Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both FSTR and SERV in my portfolio?

FSTR and SERV have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FSTR or SERV?

SERV has higher volatility (18.88%) compared to FSTR (8.89%). In terms of maximum drawdown, FSTR dropped -84.47% vs SERV's -92.72%.

Which has better risk-adjusted returns?

FSTR currently has the higher Sharpe Ratio (1.84 vs -0.60), 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.