APEI vs. AER

Last updated Apr 2, 2026

Compare and contrast key facts about American Public Education, Inc. (APEI) and AerCap Holdings N.V. (AER).

Performance

APEI vs. AER - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Public Education, Inc. (APEI) and AerCap Holdings N.V. (AER). The values are adjusted to include any dividend payments, if applicable.

APEI vs. AER - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
APEI American Public Education, Inc.	52.12%	75.24%	123.52%	-21.48%	-44.76%	-27.00%	11.28%	-3.76%	13.61%	2.04%
AER AerCap Holdings N.V.	-2.38%	51.66%	29.81%	27.43%	-10.85%	43.53%	-25.85%	55.23%	-24.73%	26.44%

Fundamentals

Market Cap APEI : $1.07B AER : $23.35B
EPS APEI : $1.71 AER : $21.70
PE Ratio APEI : 33.68 AER : 6.45
PEG Ratio APEI : 0.73 AER : 0.16
PS Ratio APEI : 0.72 AER : 3.01
PB Ratio APEI : 3.64 AER : 1.27
Total Revenue (TTM) APEI : $1.47B AER : $8.02B
Gross Profit (TTM) APEI : $521.94M AER : $4.21B
EBITDA (TTM) APEI : $55.62M AER : $6.02B

Returns By Period

In the year-to-date period, APEI achieves a 52.12% return, which is significantly higher than AER's -2.38% return. Over the past 10 years, APEI has underperformed AER with an annualized return of 10.37%, while AER has yielded a comparatively higher 13.89% annualized return.

APEI

• 1D: 1.09%
• 1M: 24.81%
• YTD: 52.12%
• 6M: 48.23%
• 1Y: 153.98%
• 3Y*: 119.73%
• 5Y*: 9.64%
• 10Y*: 10.37%

AER

• 1D: 2.03%
• 1M: -6.84%
• YTD: -2.38%
• 6M: 14.56%
• 1Y: 38.06%
• 3Y*: 36.44%
• 5Y*: 19.12%
• 10Y*: 13.89%

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

Return for Risk

APEI vs. AER — Risk / Return Rank

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

APEI

APEI Risk / Return Rank: 97
APEI Sharpe Ratio Rank: 98
APEI Sortino Ratio Rank: 97
APEI Omega Ratio Rank: 95
APEI Calmar Ratio Rank: 96
APEI Martin Ratio Rank: 98

AER

AER Risk / Return Rank: 81
AER Sharpe Ratio Rank: 83
AER Sortino Ratio Rank: 76
AER Omega Ratio Rank: 79
AER Calmar Ratio Rank: 82
AER Martin Ratio Rank: 85

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.

APEI vs. AER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Public Education, Inc. (APEI) and AerCap Holdings N.V. (AER). 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.

	APEI	AER	Difference
Sharpe ratio Return per unit of total volatility	3.50	1.42	+2.07
Sortino ratio Return per unit of downside risk	4.10	1.91	+2.19
Omega ratio Gain probability vs. loss probability	1.53	1.28	+0.24
Calmar ratio Return relative to maximum drawdown	7.07	2.59	+4.48
Martin ratio Return relative to average drawdown	24.92	8.01	+16.91
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

APEI vs. AER - Sharpe Ratio Comparison

The current APEI Sharpe Ratio is 3.50, which is higher than the AER Sharpe Ratio of 1.42. The chart below compares the historical Sharpe Ratios of APEI and AER, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	APEI	AER	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.50	1.42	+2.07
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.15	0.60	-0.44
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.18	0.33	-0.16
Sharpe Ratio (All Time) Calculated using the full available price history	0.05	0.20	-0.15

Correlation

The correlation between APEI and AER is 0.27, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

APEI vs. AER - Dividend Comparison

APEI has not paid dividends to shareholders, while AER's dividend yield for the trailing twelve months is around 0.86%.

	TTM	2025	2024
APEI American Public Education, Inc.	0.00%	0.00%	0.00%
AER AerCap Holdings N.V.	0.86%	0.75%	0.78%

Drawdowns

APEI vs. AER - Drawdown Comparison

The maximum APEI drawdown since its inception was -92.17%, roughly equal to the maximum AER drawdown of -94.38%. Use the drawdown chart below to compare losses from any high point for APEI and AER.

Drawdown Indicators

	APEI	AER	Difference
Max Drawdown Largest peak-to-trough decline	-92.17%	-94.38%	+2.21%
Max Drawdown (1Y) Largest decline over 1 year	-22.30%	-14.77%	-7.53%
Max Drawdown (5Y) Largest decline over 5 years	-89.28%	-45.14%	-44.14%
Max Drawdown (10Y) Largest decline over 10 years	-91.44%	-75.86%	-15.58%
Current Drawdown Current decline from peak	-1.78%	-9.36%	+7.58%
Average Drawdown Average peak-to-trough decline	-40.82%	-28.57%	-12.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.32%	4.78%	+1.54%

Volatility

APEI vs. AER - Volatility Comparison

American Public Education, Inc. (APEI) has a higher volatility of 21.33% compared to AerCap Holdings N.V. (AER) at 12.27%. This indicates that APEI's price experiences larger fluctuations and is considered to be riskier than AER based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	APEI	AER	Difference
Volatility (1M) Calculated over the trailing 1-month period	21.33%	12.27%	+9.06%
Volatility (6M) Calculated over the trailing 6-month period	30.59%	18.99%	+11.60%
Volatility (1Y) Calculated over the trailing 1-year period	44.34%	26.92%	+17.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	64.59%	32.29%	+32.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	59.10%	41.94%	+17.16%

Financials

APEI vs. AER - Profitability Comparison

The chart below illustrates the profitability comparison between American Public Education, Inc. and AerCap Holdings N.V. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

APEI - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, American Public Education, Inc. reported a gross profit of 259.47M and revenue of 976.18M. Therefore, the gross margin over that period was 26.6%.

AER - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, AerCap Holdings N.V. reported a gross profit of 1.13B and revenue of 2.17B. Therefore, the gross margin over that period was 52.3%.

APEI - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, American Public Education, Inc. reported an operating income of 31.55M and revenue of 976.18M, resulting in an operating margin of 3.2%.

AER - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, AerCap Holdings N.V. reported an operating income of 946.83M and revenue of 2.17B, resulting in an operating margin of 43.7%.

APEI - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, American Public Education, Inc. reported a net income of 12.61M and revenue of 976.18M, resulting in a net margin of 1.3%.

AER - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, AerCap Holdings N.V. reported a net income of 632.81M and revenue of 2.17B, resulting in a net margin of 29.2%.