Greenbrier’s Downside Magnet in a Bull‑High‑Vol Market

Five risk flags suggest the stock absorbs more downside even as momentum builds

GBX The Greenbrier Companies, Inc.

In this report

01

Returns Overview

Period returns, alpha, cumulative performance, distributions

P. 2-3

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02

Volatility Analysis

Annualized volatility, downside deviation, drawdowns

P. 4-5

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03

Beta & Correlation

Trailing, upside, downside beta, systematic risk

P. 6-7

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04

Risk-Adjusted Returns

Sharpe, Sortino, Calmar, Information, Treynor

P. 8-9

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05

Market Regime Analysis

Bull/bear behavior, capture ratios

P. 10-11

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06

Investment Highlights & Risk Summary

Executive summary, risk flags, rankings

P. 12-13

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Returns Overview

The Greenbrier Companies, Inc. (GBX) — Return Performance

The Greenbrier Companies (GBX) delivered modest positive returns over longer horizons but lagged its industrial sector benchmark across all periods. Over the past year the stock rose 2.49% versus a sector decline of -16.51%, yet its three‑year total return of 15.18% still trailed the sector’s 50.73% gain, indicating persistent underperformance despite occasional short‑term upticks.

Period Returns vs S&P 500 & XLI

Monthly Returns Heatmap

GBX

In the last month GBX posted a small loss of -0.47% while still generating positive alpha of 2.12% against the sector, suggesting a brief outperformance in a broadly weak environment. Over three months the stock fell 10.94%, underperforming the sector by 13.10 percentage points and delivering negative alpha of -24.04%, highlighting short‑term weakness that outweighed any sector tailwinds.

Returns Overview

The Greenbrier Companies, Inc. (GBX) — Return Charts

Volatility Analysis

The Greenbrier Companies, Inc. (GBX) — Volatility Profile

The Greenbrier Companies (GBX) exhibits markedly higher price variability than the broader market, with an annualized volatility of 45.4% versus the S&P 500's 17.78%, indicating more than double the typical price swings. Downside risk metrics reinforce this picture: a downside deviation of 31.89% and a historic maximum drawdown of -78.69% over a two‑year span highlight both depth and persistence of losses during market stress. While short‑term volatility (34.92% over 60 days) sits below the long‑run annualized level, the 252‑day figure of 36.71% remains elevated relative to the S&P 500, suggesting that recent price movements have been somewhat muted but still above market norms.

Volatility Metrics

GBX

GBX's volatility profile is substantially more aggressive than the benchmark; the 45.4% annualized figure translates to a beta of roughly 2.55, meaning the stock moves about two and a half times the market on average. The downside deviation of 31.89% signals that negative returns are both frequent and severe, while the -78.69% max drawdown—lasting from October 2018 to April 2020 (approximately 18 months)—demonstrates prolonged vulnerability during downturns. Although the recent 60‑day volatility has eased below the long‑term average, the 252‑day measure remains high, indicating that risk levels have not fully reverted to baseline.

GBX's annualized volatility is 2.55 times higher than the S&P 500.
Downside deviation of 31.89% reflects pronounced asymmetry toward losses.
Maximum drawdown of -78.69% persisted for roughly 18 months, indicating deep and extended downside exposure.
Current 60‑day volatility (34.92%) is below the long‑term average, but 252‑day volatility (36.71%) stays elevated.

Positive Characteristics
Short‑term (60‑day) volatility has moderated, offering a temporary reduction in price swing risk.
Recovery from the historic drawdown was completed by April 2024, showing resilience after severe stress.

Volatility Analysis

The Greenbrier Companies, Inc. (GBX) — Volatility & Drawdown Charts

Beta & Correlation

The Greenbrier Companies, Inc. (GBX) — Beta Profile

The Greenbrier Companies, Inc. (GBX) exhibits a trailing beta of 1.224 versus the S&P 500, placing it just above the aggressive threshold (>1.2). This indicates that the stock tends to amplify broader market moves, delivering roughly 22% more volatility than the benchmark in both rising and falling markets. The upside beta of 1.131 is modestly lower than the downside beta of 1.228, suggesting a slight asymmetry where declines are marginally sharper than gains—a nuance that risk‑averse investors should monitor. Correlation with the market stands at 0.479, while R‑squared is only 23%, meaning less than one quarter of GBX’s price variation can be explained by overall market movements; the majority (77%) stems from idiosyncratic factors. When benchmarked against its sector (Industrials, XLI), GBX shows a sector beta of 1.271 and a sector correlation of 0.547, implying that sector dynamics contribute more to its volatility than the broader market does. The sector R‑squared of 29.9% confirms that roughly a third of the stock’s returns are driven by industry‑specific forces, leaving two‑thirds attributable to company‑specific risk.

Beta & Correlation Metrics

GBX

GBX’s market beta of 1.224 classifies it as an aggressive equity, meaning investors can expect amplified exposure to S&P 500 swings. The asymmetric beta—upside 1.131 versus downside 1.228—signals a modest tilt toward larger losses in down markets, which may increase portfolio tail risk during bear phases. Its low market R‑squared (23%) and high idiosyncratic share (77%) indicate that the stock’s performance is driven largely by factors internal to the company or its niche within railcar manufacturing, rather than broad market sentiment. Compared with the Industrials sector benchmark, GBX’s sector beta of 1.271 exceeds both its market beta and the sector average, highlighting heightened sensitivity to industry‑specific cycles such as freight demand and regulatory shifts. The sector correlation of 0.547 and R‑squared of 29.9% show that while industry trends matter, a substantial portion of risk remains company‑specific, offering potential diversification benefits for investors already exposed to the broader industrial landscape.

Trailing market beta (1.224) places GBX in the aggressive range, implying >20% higher volatility than the S&P 500.
Downside beta (1.228) exceeds upside beta (1.131), indicating slightly sharper declines during market downturns.
Only 23% of price movements are explained by overall market moves; 77% is idiosyncratic, offering diversification potential.
Sector beta (1.271) is higher than market beta, showing GBX is more sensitive to Industrials‑specific dynamics than to the broad market.
Sector R‑squared (29.9%) confirms that roughly one‑third of return variance stems from industry factors, with two‑thirds remaining company‑specific.

Positive Characteristics
High idiosyncratic component (77%) can provide diversification benefits for portfolios heavily weighted to the S&P 500.
Sector beta above market beta suggests the stock may capture upside from favorable industrial cycles more effectively than broader market exposure would allow.

Beta & Correlation

The Greenbrier Companies, Inc. (GBX) — Rolling Beta

Positive Notes

High idiosyncratic component (77%) can provide diversification benefits for portfolios heavily weighted to the S&P 500.

Sector beta above market beta suggests the stock may capture upside from favorable industrial cycles more effectively than broader market exposure would allow.

Risk-Adjusted Returns

The Greenbrier Companies, Inc. (GBX) — Risk-Adjusted Performance

The Greenbrier Companies, Inc. (GBX) delivers modest risk-adjusted returns relative to the risk-free rate of 3.63%. A Sharpe ratio of 0.176 indicates that the stock’s excess return per unit of total volatility is well below the threshold typically considered attractive (>1.0), suggesting limited compensation for risk taken. However, the Sortino ratio of 0.25 exceeds the Sharpe figure, implying that downside volatility is lower than overall volatility and that the equity’s performance is somewhat more favorable when focusing solely on adverse price movements.

Risk-free rate: 3.63% (Fed Funds Rate)

Risk-Adjusted Metrics

GBX

GBX ranks first (and only) in this single‑company analysis for risk-adjusted performance, though its absolute metrics are weak. The Sharpe ratio of 0.176 and a Treynor ratio of 6.524 together show that while the stock generates a modest excess return relative to total risk, it provides a relatively high return per unit of systematic (beta) risk, indicating exposure to market movements rather than idiosyncratic sources. The Calmar ratio of 0.148 reflects a small return relative to its worst historical drawdown, signaling that past peak‑to‑trough losses have been sizable compared with the average annualized gain.

Sharpe ratio (0.176) is far below the >1.0 benchmark, indicating limited reward for total volatility.
Sortino ratio (0.25) exceeds Sharpe, highlighting a comparatively milder downside risk profile.
Calmar ratio (0.148) suggests that historical drawdowns have eroded much of the stock’s return potential.
Information Ratio (-0.029) is negative, implying that active management has not generated consistent alpha over the benchmark.
Treynor ratio (6.524) shows a relatively strong return per unit of systematic risk despite low overall risk-adjusted returns.

Positive Characteristics
The Sortino ratio surpasses the Sharpe ratio, indicating that downside volatility is less pronounced than total volatility.
A Treynor ratio above 5 reflects decent compensation for market (beta) exposure.

Risk-Adjusted Returns

The Greenbrier Companies, Inc. (GBX) — Rolling Sharpe & Sortino

Positive Notes

The Sortino ratio surpasses the Sharpe ratio, indicating that downside volatility is less pronounced than total volatility.

A Treynor ratio above 5 reflects decent compensation for market (beta) exposure.

Market Regime Analysis

The Greenbrier Companies, Inc. (GBX) — Regime Behavior

The Greenbrier Companies (GBX) exhibits markedly higher returns in bullish environments, delivering an average monthly gain of 4.68% during Bull-HighVol periods compared with 2.89% when volatility is low. In contrast, the stock suffers steep declines in bear markets, posting a -11.96% average loss in Bear-LowVol regimes and a -6.05% loss when volatility spikes, indicating heightened sensitivity to market downturns. The upside capture of 150% suggests that GBX outperforms the S&P 500 during rising markets, while a downside capture of 203% reveals that it loses more than the index in falling markets, resulting in a capture ratio of 0.74.

Current Market Regime: Bull-HighVol

Bull-LowVol = calm uptrend • Bull-HighVol = volatile uptrend • Bear-LowVol = orderly decline • Bear-HighVol = crisis

Regime Returns & Capture Ratios

GBX

During Bull-HighVol regimes, GBX’s average return of 4.68% reflects strong participation in market rallies despite heightened volatility, benefiting from its cyclical exposure to railcar manufacturing demand. In Bear-LowVol periods, the stock’s -11.96% average loss underscores a defensive weakness; even when declines are orderly, GBX underperforms sharply. The Bear-HighVol environment moderates losses to -6.05%, yet the downside capture of 203% still indicates that the stock falls more than the broader market during volatile downturns.

Market Regime Analysis

The Greenbrier Companies, Inc. (GBX) — Regime & Capture Charts

Regime Timeline

GBX’s upside capture of 150% demonstrates robust participation in bullish markets, especially when volatility is elevated.
A downside capture of 203% signals pronounced vulnerability in bear regimes, with losses exceeding the S&P 500 by over 100 basis points.
The capture ratio of 0.74 falls below the ideal threshold (>1.0), indicating that the stock’s risk‑adjusted upside potential is outweighed by its downside exposure.
Current Bull-HighVol conditions favor GBX, aligning with its strongest historical average return of 4.68% across 37 months.

Positive Characteristics
Strong performance in volatile uptrends suggests the business can capitalize on cyclical demand spikes.
The current Bull-HighVol regime aligns with GBX’s highest historical return period, offering upside momentum potential.

Investment Highlights & Risk Summary

The Greenbrier Companies, Inc. (GBX) — Summary & Implications

The Greenbrier Companies (GBX) operates within the Industrials sector and has delivered a modest 1‑year total return of 2.49%, markedly trailing both the S&P 500 and its sector benchmark XLI by roughly 16.5% in alpha terms. While the stock exhibits an upside capture of 150%—indicating it participates strongly in market rallies—the downside capture of 203% reveals a pronounced sensitivity to market declines, compounded by a high beta of 1.224 and annualized volatility of 45.4%. Risk metrics are subdued: a Sharpe ratio of 0.176 and Sortino of 0.25 suggest limited excess return per unit of risk, and the historical maximum drawdown of –78.69% underscores the potential for severe capital erosion. Investors should weigh these characteristics against any strategic exposure to rolling stock manufacturing, recognizing that the company’s risk profile is skewed toward downside volatility and sector underperformance.

Summary Dashboard

Investment Highlights

Upside capture of 150% demonstrates that GBX can generate returns exceeding market gains during bullish periods.
Beta of 1.224 indicates a modestly higher sensitivity to overall market movements, offering potential for amplified upside when the broader market rallies.
The company’s exposure to infrastructure spending on rail transport could provide a secular growth catalyst not fully reflected in recent price performance.

Risk-Return Rankings

GBX HIGH

High volatility and deep drawdown risk with modest upside potential.

Strength: Strong upside capture (150%) during market rallies.

Concern: Extreme downside capture (203%) and historic max drawdown of -78.7%.

Key Takeaways

GBX underperforms its sector by 16.5% over the past year, indicating relative weakness.
The stock’s Sharpe ratio of 0.176 signals low risk‑adjusted returns compared with a benchmark target above 1.0.
High annualized volatility (45.4%) and downside capture (>200%) suggest the equity is more suited to investors comfortable with significant price swings.
Potential upside from infrastructure initiatives may not be fully priced in, but it must outweigh the pronounced downside risk.

PORTFOLIO IMPLICATIONS

Given its high beta and pronounced asymmetry—capturing more than twice the market’s losses—GBX is best positioned as a small, tactical allocation within a diversified portfolio that already contains lower‑volatility industrial or broader market exposure. Its strong upside capture can complement defensive holdings during bullish cycles, but investors should limit exposure to mitigate the impact of severe drawdowns, especially in volatile or bear markets.

GBX

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Report written 2026-06-07 • Finexus

Disclaimer

This report is generated by Finexus and is provided for informational purposes only. It does not constitute investment advice, a recommendation, or an offer or solicitation to buy or sell any security.

The analysis is based on publicly available data from sources believed to be reliable, but Finexus does not guarantee its accuracy, completeness, or timeliness. Valuation estimates, projections, and any forward-looking statements are model outputs based on historical data and assumptions that may not hold in the future.

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