GHM vs. PRDO
GHM (Graham Corporation) and PRDO (Perdoceo Education Corporation) are both stocks. GHM operates in Specialty Industrial Machinery (Industrials), while PRDO operates in Education & Training Services (Consumer Defensive). Over the past 10 years, GHM returned 20.77%/yr vs 20.32%/yr for PRDO. At a 0.19 correlation, their price movements are largely independent.
Performance
GHM vs. PRDO - Performance Comparison
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Returns By Period
In the year-to-date period, GHM achieves a 61.75% return, which is significantly higher than PRDO's 17.13% return. Both investments have delivered pretty close results over the past 10 years, with GHM having a 20.77% annualized return and PRDO not far behind at 20.32%.
GHM
- 1D
- 0.86%
- 1M
- 1.82%
- YTD
- 61.75%
- 6M
- 65.04%
- 1Y
- 121.09%
- 3Y*
- 99.93%
- 5Y*
- 49.12%
- 10Y*
- 20.77%
PRDO
- 1D
- -3.60%
- 1M
- -2.07%
- YTD
- 17.13%
- 6M
- 18.99%
- 1Y
- 8.84%
- 3Y*
- 42.27%
- 5Y*
- 23.24%
- 10Y*
- 20.32%
GHM vs. PRDO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
GHM Graham Corporation | 61.75% | 44.43% | 134.42% | 97.19% | -22.67% | -15.50% | -28.39% | -2.28% | 10.81% | -3.80% |
PRDO Perdoceo Education Corporation | 17.13% | 12.94% | 54.04% | 27.99% | 18.20% | -6.89% | -31.32% | 61.03% | -5.46% | 19.72% |
Correlation
The correlation between GHM and PRDO is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.13 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.21 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.18 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.22 |
Correlation (All Time) Calculated using the full available price history since Jan 29, 1998 | 0.19 |
Fundamentals
GHM:
$1.16B
PRDO:
$2.16B
GHM:
$1.12
PRDO:
$2.61
GHM:
92.39
PRDO:
13.07
GHM:
0.31
PRDO:
0.90
GHM:
4.71
PRDO:
2.60
GHM:
8.25
PRDO:
2.16
GHM:
$245.29M
PRDO:
$854.84M
GHM:
$57.75M
PRDO:
$442.47M
GHM:
$14.76M
PRDO:
$269.29M
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Return for Risk
GHM vs. PRDO — Risk / Return Rank
GHM
PRDO
GHM vs. PRDO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Graham Corporation (GHM) and Perdoceo Education Corporation (PRDO). 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.
| GHM | PRDO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +2.04 | ||
| Sortino ratioReturn per unit of downside risk | +2.03 | ||
| Omega ratioGain probability vs. loss probability | 1.35 | 1.08 | +0.27 |
| Calmar ratioReturn relative to maximum drawdown | 6.69 | 0.33 | +6.36 |
| Martin ratioReturn relative to average drawdown | 16.23 | 0.72 | +15.52 |
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Drawdowns
GHM vs. PRDO - Drawdown Comparison
The maximum GHM drawdown since its inception was -86.11%, smaller than the maximum PRDO drawdown of -97.10%. Use the drawdown chart below to compare losses from any high point for GHM and PRDO.
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Drawdown Indicators
| GHM | PRDO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -86.11% | -97.10% | +10.99% |
Max Drawdown (1Y)Largest decline over 1 year | -18.21% | -27.22% | +9.01% |
Max Drawdown (3Y)Largest decline over 3 years | -46.46% | -27.22% | -19.24% |
Max Drawdown (5Y)Largest decline over 5 years | -53.16% | -27.42% | -25.74% |
Max Drawdown (10Y)Largest decline over 10 years | -74.83% | -64.27% | -10.56% |
Current DrawdownCurrent decline from peak | -3.77% | -48.70% | +44.93% |
Average DrawdownAverage peak-to-trough decline | -47.38% | -60.36% | +12.98% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 7.49% | 12.35% | -4.86% |
Volatility
GHM vs. PRDO - Volatility Comparison
Graham Corporation (GHM) has a higher volatility of 19.90% compared to Perdoceo Education Corporation (PRDO) at 8.06%. This indicates that GHM's price experiences larger fluctuations and is considered to be riskier than PRDO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| GHM | PRDO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 19.90% | 8.06% | +11.84% |
Volatility (6M)Calculated over the trailing 6-month period | 39.23% | 21.38% | +17.85% |
Volatility (1Y)Calculated over the trailing 1-year period | 52.36% | 30.80% | +21.56% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 49.38% | 35.19% | +14.19% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 45.21% | 38.11% | +7.10% |
Dividends
GHM vs. PRDO - Dividend Comparison
GHM has not paid dividends to shareholders, while PRDO's dividend yield for the trailing twelve months is around 1.76%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GHM Graham Corporation | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 3.54% | 2.90% | 1.92% | 1.66% | 1.72% | 1.63% | 1.90% |
PRDO Perdoceo Education Corporation | 1.76% | 1.91% | 1.81% | 1.25% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Financials
GHM vs. PRDO - Financials Comparison
This section allows you to compare key financial metrics between Graham Corporation and Perdoceo Education Corporation. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
GHM vs. PRDO - Profitability Comparison
GHM - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Graham Corporation reported a gross profit of 15.69M and revenue of 67.08M. Therefore, the gross margin over that period was 23.4%.
PRDO - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Perdoceo Education Corporation reported a gross profit of 0.00 and revenue of 221.74M. Therefore, the gross margin over that period was 0.0%.
GHM - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Graham Corporation reported an operating income of 1.72M and revenue of 67.08M, resulting in an operating margin of 2.6%.
PRDO - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Perdoceo Education Corporation reported an operating income of 63.12M and revenue of 221.74M, resulting in an operating margin of 28.5%.
GHM - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Graham Corporation reported a net income of 1.97M and revenue of 67.08M, resulting in a net margin of 2.9%.
PRDO - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Perdoceo Education Corporation reported a net income of 53.95M and revenue of 221.74M, resulting in a net margin of 24.3%.
Frequently Asked Questions
GHM and PRDO have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
GHM has higher volatility (19.90%) compared to PRDO (8.06%). In terms of maximum drawdown, GHM dropped -86.11% vs PRDO's -97.10%.
GHM currently has the higher Sharpe Ratio (2.33 vs 0.29), 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.
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