PESI vs. BRK-B
PESI (Perma-Fix Environmental Services, Inc.) and BRK-B (Berkshire Hathaway Inc.) are both stocks. PESI operates in Waste Management (Industrials), while BRK-B operates in Insurance - Diversified (Financial Services). Over the past 10 years, PESI returned 7.40%/yr vs 13.34%/yr for BRK-B. At a 0.08 correlation, their price movements are largely independent.
Performance
PESI vs. BRK-B - Performance Comparison
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Returns By Period
In the year-to-date period, PESI achieves a -12.71% return, which is significantly lower than BRK-B's -2.78% return. Over the past 10 years, PESI has underperformed BRK-B with an annualized return of 7.40%, while BRK-B has yielded a comparatively higher 13.34% annualized return.
PESI
- 1D
- -0.09%
- 1M
- 22.79%
- YTD
- -12.71%
- 6M
- -15.27%
- 1Y
- 10.01%
- 3Y*
- -0.63%
- 5Y*
- 9.76%
- 10Y*
- 7.40%
BRK-B
- 1D
- -0.16%
- 1M
- 0.47%
- YTD
- -2.78%
- 6M
- -2.25%
- 1Y
- 0.79%
- 3Y*
- 13.38%
- 5Y*
- 12.21%
- 10Y*
- 13.34%
PESI vs. BRK-B - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PESI Perma-Fix Environmental Services, Inc. | -12.71% | 13.73% | 40.84% | 122.66% | -44.23% | 6.03% | -34.40% | 287.23% | -35.62% | -6.41% |
BRK-B Berkshire Hathaway Inc. | -2.78% | 10.89% | 27.09% | 15.46% | 3.31% | 28.95% | 2.37% | 10.93% | 3.01% | 21.62% |
Correlation
The correlation between PESI and BRK-B is -0.06, 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 | -0.06 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.12 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.10 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.10 |
Correlation (All Time) Calculated using the full available price history since May 9, 1996 | 0.08 |
The correlation between PESI and BRK-B shifts across timeframes, from -0.06 (1 year) to 0.12 (3 years), reflecting how their relationship changes across market environments.
Fundamentals
PESI:
$203.78M
BRK-B:
$1.05T
PESI:
-$0.96
BRK-B:
$33.62
PESI:
3.45
BRK-B:
2.81
PESI:
4.74
BRK-B:
1.45
PESI:
$58.88M
BRK-B:
$375.39B
PESI:
$2.41M
BRK-B:
$94.36B
PESI:
-$13.44M
BRK-B:
$71.92B
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Return for Risk
PESI vs. BRK-B — Risk / Return Rank
PESI
BRK-B
PESI vs. BRK-B - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Perma-Fix Environmental Services, Inc. (PESI) and Berkshire Hathaway Inc. (BRK-B). 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.
| PESI | BRK-B | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.10 | ||
| Sortino ratioReturn per unit of downside risk | +0.50 | ||
| Omega ratioGain probability vs. loss probability | 1.09 | 1.02 | +0.07 |
| Calmar ratioReturn relative to maximum drawdown | 0.22 | 0.08 | +0.14 |
| Martin ratioReturn relative to average drawdown | 0.52 | 0.17 | +0.35 |
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Drawdowns
PESI vs. BRK-B - Drawdown Comparison
The maximum PESI drawdown since its inception was -89.92%, which is greater than BRK-B's maximum drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for PESI and BRK-B.
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Drawdown Indicators
| PESI | BRK-B | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -89.92% | -53.86% | -36.06% |
Max Drawdown (1Y)Largest decline over 1 year | -45.37% | -9.42% | -35.95% |
Max Drawdown (3Y)Largest decline over 3 years | -58.00% | -14.95% | -43.05% |
Max Drawdown (5Y)Largest decline over 5 years | -58.00% | -26.58% | -31.42% |
Max Drawdown (10Y)Largest decline over 10 years | -65.61% | -29.57% | -36.04% |
Current DrawdownCurrent decline from peak | -38.43% | -9.47% | -28.96% |
Average DrawdownAverage peak-to-trough decline | -51.17% | -11.07% | -40.10% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 19.14% | 4.57% | +14.57% |
Volatility
PESI vs. BRK-B - Volatility Comparison
Perma-Fix Environmental Services, Inc. (PESI) has a higher volatility of 19.37% compared to Berkshire Hathaway Inc. (BRK-B) at 3.68%. This indicates that PESI's price experiences larger fluctuations and is considered to be riskier than BRK-B based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PESI | BRK-B | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 19.37% | 3.68% | +15.69% |
Volatility (6M)Calculated over the trailing 6-month period | 41.39% | 10.60% | +30.79% |
Volatility (1Y)Calculated over the trailing 1-year period | 65.31% | 14.39% | +50.92% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 59.80% | 17.10% | +42.70% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 59.59% | 19.44% | +40.15% |
Dividends
PESI vs. BRK-B - Dividend Comparison
Neither PESI nor BRK-B has paid dividends to shareholders.
Financials
PESI vs. BRK-B - Financials Comparison
This section allows you to compare key financial metrics between Perma-Fix Environmental Services, Inc. and Berkshire Hathaway Inc.. 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
PESI vs. BRK-B - Profitability Comparison
PESI - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Perma-Fix Environmental Services, Inc. reported a gross profit of -2.88M and revenue of 11.13M. Therefore, the gross margin over that period was -25.9%.
BRK-B - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Berkshire Hathaway Inc. reported a gross profit of 26.98B and revenue of 93.68B. Therefore, the gross margin over that period was 28.8%.
PESI - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Perma-Fix Environmental Services, Inc. reported an operating income of -7.48M and revenue of 11.13M, resulting in an operating margin of -67.3%.
BRK-B - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Berkshire Hathaway Inc. reported an operating income of 15.05B and revenue of 93.68B, resulting in an operating margin of 16.1%.
PESI - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Perma-Fix Environmental Services, Inc. reported a net income of -7.49M and revenue of 11.13M, resulting in a net margin of -67.3%.
BRK-B - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Berkshire Hathaway Inc. reported a net income of 10.18B and revenue of 93.68B, resulting in a net margin of 10.9%.
Frequently Asked Questions
PESI and BRK-B have a correlation of -0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PESI has higher volatility (19.37%) compared to BRK-B (3.68%). In terms of maximum drawdown, PESI dropped -89.92% vs BRK-B's -53.86%.
PESI currently has the higher Sharpe Ratio (0.15 vs 0.06), 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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