PTLO vs. ACGL

Last updated Jun 4, 2026

PTLO (Portillo's Inc) and ACGL (Arch Capital Group Ltd.) are both stocks. PTLO operates in Restaurants (Consumer Cyclical), while ACGL operates in Insurance - Diversified (Financial Services). Over the past 3 years, PTLO returned -42.46%/yr vs 9.24%/yr for ACGL. At a 0.10 correlation, their price movements are largely independent.

Performance

PTLO vs. ACGL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Portillo's Inc (PTLO) and Arch Capital Group Ltd. (ACGL). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PTLO achieves a -12.78% return, which is significantly lower than ACGL's -8.37% return.

PTLO

• 1D: -1.49%
• 1M: -30.77%
• YTD: -12.78%
• 6M: -20.32%
• 1Y: -66.86%
• 3Y*: -42.46%
• 5Y*: —
• 10Y*: —

ACGL

• 1D: 0.31%
• 1M: -6.15%
• YTD: -8.37%
• 6M: -5.21%
• 1Y: -8.28%
• 3Y*: 9.24%
• 5Y*: 18.45%
• 10Y*: 14.41%

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

PTLO vs. ACGL - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
PTLO Portillo's Inc	-12.78%	-51.70%	-40.99%	-2.39%	-56.53%	29.00%
ACGL Arch Capital Group Ltd.	-8.37%	3.87%	30.76%	18.30%	41.24%	3.59%

Correlation

The correlation between PTLO and ACGL is 0.03, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.03
Correlation (3Y) Calculated over the trailing 3-year period	0.05
Correlation (All Time) Calculated using the full available price history since Oct 22, 2021	0.10

Fundamentals

Market Cap PTLO : $285.42M ACGL : $31.61B
EPS PTLO : $0.22 ACGL : $13.06
PE Ratio PTLO : 18.18 ACGL : 6.73
PEG Ratio PTLO : 2.60 ACGL : 0.15
PS Ratio PTLO : 0.38 ACGL : 1.66
PB Ratio PTLO : 0.61 ACGL : 1.35
Total Revenue (TTM) PTLO : $738.25M ACGL : $19.70B
Gross Profit (TTM) PTLO : $553.52M ACGL : $8.44B
EBITDA (TTM) PTLO : $70.87M ACGL : $5.80B

Return for Risk

PTLO vs. ACGL — Risk / Return Rank

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

PTLO

PTLO Risk / Return Rank: 4
PTLO Sharpe Ratio Rank: 2
PTLO Sortino Ratio Rank: 2
PTLO Omega Ratio Rank: 2
PTLO Calmar Ratio Rank: 2
PTLO Martin Ratio Rank: 10

ACGL

ACGL Risk / Return Rank: 19
ACGL Sharpe Ratio Rank: 23
ACGL Sortino Ratio Rank: 21
ACGL Omega Ratio Rank: 21
ACGL Calmar Ratio Rank: 20
ACGL Martin Ratio Rank: 8

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.

PTLO vs. ACGL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Portillo's Inc (PTLO) and Arch Capital Group Ltd. (ACGL). 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.

	PTLO	ACGL	Difference
Sharpe ratio Return per unit of total volatility	-1.23	-0.40	-0.83
Sortino ratio Return per unit of downside risk	-2.11	-0.40	-1.71
Omega ratio Gain probability vs. loss probability	0.73	0.95	-0.22
Calmar ratio Return relative to maximum drawdown	-0.98	-0.59	-0.39
Martin ratio Return relative to average drawdown	-1.32	-1.39	+0.06
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PTLO vs. ACGL - Sharpe Ratio Comparison

The current PTLO Sharpe Ratio is -1.23, which is lower than the ACGL Sharpe Ratio of -0.40. The chart below compares the historical Sharpe Ratios of PTLO and ACGL, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	PTLO	ACGL	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-1.23	-0.40	-0.83
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.76	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.53	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.62	0.44	-1.06

Drawdowns

PTLO vs. ACGL - Drawdown Comparison

The maximum PTLO drawdown since its inception was -92.81%, which is greater than ACGL's maximum drawdown of -54.70%. Use the drawdown chart below to compare losses from any high point for PTLO and ACGL.

Drawdown Indicators

	PTLO	ACGL	Difference
Max Drawdown Largest peak-to-trough decline	-92.81%	-54.70%	-38.11%
Max Drawdown (1Y) Largest decline over 1 year	-68.34%	-14.08%	-54.26%
Max Drawdown (3Y) Largest decline over 3 years	-83.59%	-22.43%	-61.16%
Max Drawdown (5Y) Largest decline over 5 years	—	-22.43%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-53.84%	—
Current Drawdown Current decline from peak	-92.70%	-19.53%	-73.17%
Average Drawdown Average peak-to-trough decline	-70.78%	-11.72%	-59.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	50.50%	6.12%	+44.38%

Volatility

PTLO vs. ACGL - Volatility Comparison

Portillo's Inc (PTLO) has a higher volatility of 20.81% compared to Arch Capital Group Ltd. (ACGL) at 5.62%. This indicates that PTLO's price experiences larger fluctuations and is considered to be riskier than ACGL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PTLO	ACGL	Difference
Volatility (1M) Calculated over the trailing 1-month period	20.81%	5.62%	+15.19%
Volatility (6M) Calculated over the trailing 6-month period	39.34%	14.42%	+24.92%
Volatility (1Y) Calculated over the trailing 1-year period	54.66%	20.91%	+33.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	56.68%	24.55%	+32.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	56.68%	27.53%	+29.15%

Dividends

PTLO vs. ACGL - Dividend Comparison

Neither PTLO nor ACGL has paid dividends to shareholders.

Position	TTM	2025	2024
ACGL Arch Capital Group Ltd.	0.00%	0.00%	5.41%
PTLO Portillo's Inc	0.00%	0.00%	0.00%

Financials

PTLO vs. ACGL - Profitability Comparison

The chart below illustrates the profitability comparison between Portillo's Inc and Arch Capital Group Ltd. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

PTLO - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Portillo's Inc reported a gross profit of 122.24M and revenue of 182.62M. Therefore, the gross margin over that period was 66.9%.

ACGL - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Arch Capital Group Ltd. reported a gross profit of 2.27B and revenue of 4.36B. Therefore, the gross margin over that period was 52.1%.

PTLO - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Portillo's Inc reported an operating income of 4.49M and revenue of 182.62M, resulting in an operating margin of 2.5%.

ACGL - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Arch Capital Group Ltd. reported an operating income of 1.15B and revenue of 4.36B, resulting in an operating margin of 26.3%.

PTLO - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Portillo's Inc reported a net income of -402.00K and revenue of 182.62M, resulting in a net margin of -0.2%.

ACGL - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Arch Capital Group Ltd. reported a net income of 1.05B and revenue of 4.36B, resulting in a net margin of 24.0%.

Frequently Asked Questions

Can I hold both PTLO and ACGL in my portfolio?

PTLO and ACGL have a correlation of 0.03, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PTLO or ACGL?

PTLO has higher volatility (20.81%) compared to ACGL (5.62%). In terms of maximum drawdown, PTLO dropped -92.81% vs ACGL's -54.70%.

Which has better risk-adjusted returns?

ACGL currently has the higher Sharpe Ratio (-0.40 vs -1.23), 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.