FSTR vs. PSIX

Last updated Aug 1, 2026

FSTR (L.B. Foster Company) and PSIX (Power Solutions International, Inc.) are both stocks. Both are in the Industrials sector — FSTR in Railroads, PSIX in Specialty Industrial Machinery. Over the past 10 years, FSTR returned 15.15%/yr vs 5.61%/yr for PSIX. Their 0.12 correlation means their historical movements had little consistent relationship.

Performance

FSTR vs. PSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in L.B. Foster Company (FSTR) and Power Solutions International, Inc. (PSIX). 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 PSIX's -51.68% return. Over the past 10 years, FSTR has outperformed PSIX with an annualized return of 15.15%, while PSIX has yielded a comparatively lower 5.61% annualized 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%

PSIX

• 1D: -0.79%
• 1M: -25.54%
• 6M: -61.47%
• YTD: -51.68%
• 1Y: -68.26%
• 3Y*: 121.23%
• 5Y*: 29.78%
• 10Y*: 5.61%
• ALL TIME*: 3.45%

*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
PSIX Power Solutions International, Inc.	$13.05M	$14.34M	$29.49M

FSTR vs. PSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSTR L.B. Foster Company	52.62%	0.19%	22.33%	127.17%	-29.60%	-8.64%	-22.34%	21.89%	-41.44%	99.63%
PSIX Power Solutions International, Inc.	-51.68%	92.07%	1,351.22%	-31.67%	0.00%	-9.09%	-58.23%	-14.59%	23.33%	0.00%

Correlation

The correlation between FSTR and PSIX is 0.29, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.29
Correlation (3Y) Balances recent behavior with more history.	0.18
Correlation (5Y) Shows whether the relationship held over a longer period.	0.12
Correlation (10Y) Provides a long-term view across more market conditions.	0.07
Correlation (All Time) Calculated using the full available price history since Apr 17, 2012	0.12

The correlation between FSTR and PSIX shifts across timeframes, from 0.07 (10 years) to 0.29 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap FSTR : $430.17M PSIX : $636.42M
EPS FSTR : $1.04 PSIX : $4.43
PE Ratio FSTR : 39.61 PSIX : 6.23
PEG Ratio FSTR : 0.06 PSIX : 0.06
PS Ratio FSTR : 0.78 PSIX : 1.08
PB Ratio FSTR : 2.51 PSIX : 3.43
Total Revenue (TTM) FSTR : $563.36M PSIX : $586.96M
Gross Profit (TTM) FSTR : $119.30M PSIX : $172.81M
EBITDA (TTM) FSTR : $37.88M PSIX : $102.78M

Return for Risk

FSTR vs. PSIX — 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

PSIX

PSIX Risk / Return Rank: 10
PSIX Sharpe Ratio Rank: 13
PSIX Sortino Ratio Rank: 14
PSIX Omega Ratio Rank: 14
PSIX Calmar Ratio Rank: 7
PSIX Martin Ratio Rank: 4

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. PSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for L.B. Foster Company (FSTR) and Power Solutions International, Inc. (PSIX). 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	PSIX	Difference
Sharpe ratio: Return per unit of total volatility	1.84	-0.71	+2.55
Sortino ratio: Return per unit of downside risk	3.01	-0.91	+3.91
Omega ratio: Gain probability vs. loss probability	1.35	0.89	+0.47
Calmar ratio: Return relative to maximum drawdown	4.90	-0.91	+5.81
Martin ratio: Return relative to average drawdown	13.34	-1.57	+14.92

FSTR vs. PSIX - Sharpe Ratio Comparison

The current FSTR Sharpe Ratio is 1.84, which is higher than the PSIX Sharpe Ratio of -0.71. The chart below compares the historical Sharpe Ratios of FSTR and PSIX, 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. PSIX - Drawdown Comparison

The maximum FSTR drawdown since its inception was -84.47%, smaller than the maximum PSIX drawdown of -98.55%. Use the drawdown chart below to compare losses from any high point for FSTR and PSIX.

Drawdown Indicators

	FSTR	PSIX	Difference
Max Drawdown Largest peak-to-trough decline	-84.47%	-98.55%	+14.08%
Max Drawdown (1Y) Largest decline over 1 year	-15.38%	-78.03%	+62.65%
Max Drawdown (3Y) Largest decline over 3 years	-45.90%	-78.03%	+32.13%
Max Drawdown (5Y) Largest decline over 5 years	-50.47%	-78.07%	+27.60%
Max Drawdown (10Y) Largest decline over 10 years	-70.39%	-92.09%	+21.70%
Current Drawdown Current decline from peak	-26.98%	-76.15%	+49.17%
Average Drawdown Average peak-to-trough decline	-41.74%	-68.22%	+26.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.69%	44.85%	-39.16%

Volatility

FSTR vs. PSIX - Volatility Comparison

The current volatility for L.B. Foster Company (FSTR) is 8.89%, while Power Solutions International, Inc. (PSIX) has a volatility of 21.37%. This indicates that FSTR experiences smaller price fluctuations and is considered to be less risky than PSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSTR	PSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.89%	21.37%	-12.48%
Volatility (6M) Calculated over the trailing 6-month period	30.05%	89.38%	-59.33%
Volatility (1Y) Calculated over the trailing 1-year period	40.97%	100.07%	-59.10%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	41.63%	112.91%	-71.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	47.94%	106.00%	-58.06%

Dividends

FSTR vs. PSIX - Dividend Comparison

Neither FSTR nor PSIX 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%
PSIX Power Solutions International, 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 PSIX in my portfolio?

FSTR and PSIX have a correlation of 0.29, 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 PSIX?

PSIX has higher volatility (21.37%) compared to FSTR (8.89%). In terms of maximum drawdown, FSTR dropped -84.47% vs PSIX's -98.55%.

Which has better risk-adjusted returns?

FSTR currently has the higher Sharpe Ratio (1.84 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.