SPXSY vs. RIO
SPXSY (Spirax-Sarco Engineering PLC) and RIO (Rio Tinto Group) are both stocks. SPXSY operates in Specialty Industrial Machinery (Industrials), while RIO operates in Other Industrial Metals & Mining (Basic Materials). Over the past 5 years, SPXSY returned -10.62%/yr vs 11.69%/yr for RIO. At a 0.15 correlation, their price movements are largely independent.
Performance
SPXSY vs. RIO - Performance Comparison
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Returns By Period
In the year-to-date period, SPXSY achieves a 2.76% return, which is significantly lower than RIO's 38.54% return.
SPXSY
- 1D
- 0.32%
- 1M
- -2.38%
- YTD
- 2.76%
- 6M
- 4.75%
- 1Y
- 23.26%
- 3Y*
- -10.81%
- 5Y*
- -10.62%
- 10Y*
- —
RIO
- 1D
- -3.41%
- 1M
- 9.36%
- YTD
- 38.54%
- 6M
- 49.27%
- 1Y
- 92.97%
- 3Y*
- 27.11%
- 5Y*
- 11.69%
- 10Y*
- 22.38%
SPXSY vs. RIO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
SPXSY Spirax-Sarco Engineering PLC | 2.76% | 9.14% | -35.47% | 7.18% | -42.06% | 98.57% | 2.19% | 41.14% | 79.09% |
RIO Rio Tinto Group | 38.54% | 44.47% | -15.36% | 11.06% | 18.48% | -3.67% | 36.22% | 33.18% | -6.08% |
Correlation
The correlation between SPXSY and RIO is 0.30, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.30 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.29 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.20 |
Correlation (All Time) Calculated using the full available price history since Mar 1, 2018 | 0.15 |
The correlation between SPXSY and RIO shifts across timeframes, from 0.15 (all time) to 0.30 (1 year), reflecting how their relationship changes across market environments.
Fundamentals
SPXSY:
$6.84B
RIO:
$176.72B
SPXSY:
$2.40
RIO:
$13.11
SPXSY:
19.35
RIO:
8.23
SPXSY:
2.04
RIO:
1.59
SPXSY:
5.61
RIO:
2.84
SPXSY:
$3.36B
RIO:
$111.41B
SPXSY:
$1.59B
RIO:
$31.10B
SPXSY:
$767.18M
RIO:
$40.42B
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Return for Risk
SPXSY vs. RIO — Risk / Return Rank
SPXSY
RIO
SPXSY vs. RIO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Spirax-Sarco Engineering PLC (SPXSY) and Rio Tinto Group (RIO). 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.
| SPXSY | RIO | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.70 | 3.29 | -2.59 |
Sortino ratioReturn per unit of downside risk | 1.30 | 3.81 | -2.51 |
Omega ratioGain probability vs. loss probability | 1.15 | 1.50 | -0.35 |
Calmar ratioReturn relative to maximum drawdown | 1.14 | 6.16 | -5.01 |
Martin ratioReturn relative to average drawdown | 3.09 | 24.21 | -21.13 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| SPXSY | RIO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.70 | 3.29 | -2.59 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.28 | 0.40 | -0.68 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.73 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.27 | 0.34 | -0.07 |
Drawdowns
SPXSY vs. RIO - Drawdown Comparison
The maximum SPXSY drawdown since its inception was -67.73%, smaller than the maximum RIO drawdown of -88.97%. Use the drawdown chart below to compare losses from any high point for SPXSY and RIO.
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Drawdown Indicators
| SPXSY | RIO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -67.73% | -88.97% | +21.24% |
Max Drawdown (1Y)Largest decline over 1 year | -20.46% | -15.19% | -5.27% |
Max Drawdown (3Y)Largest decline over 3 years | -49.76% | -24.19% | -25.57% |
Max Drawdown (5Y)Largest decline over 5 years | -67.73% | -35.25% | -32.48% |
Max Drawdown (10Y)Largest decline over 10 years | — | -37.47% | — |
Current DrawdownCurrent decline from peak | -55.86% | -3.73% | -52.13% |
Average DrawdownAverage peak-to-trough decline | -35.17% | -23.78% | -11.39% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 7.55% | 3.85% | +3.70% |
Volatility
SPXSY vs. RIO - Volatility Comparison
Spirax-Sarco Engineering PLC (SPXSY) and Rio Tinto Group (RIO) have volatilities of 10.95% and 11.49%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPXSY | RIO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 10.95% | 11.49% | -0.54% |
Volatility (6M)Calculated over the trailing 6-month period | 22.89% | 23.38% | -0.49% |
Volatility (1Y)Calculated over the trailing 1-year period | 33.44% | 28.44% | +5.00% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 38.43% | 29.16% | +9.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 56.04% | 30.66% | +25.38% |
Dividends
SPXSY vs. RIO - Dividend Comparison
SPXSY's dividend yield for the trailing twelve months is around 2.46%, less than RIO's 3.73% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
RIO Rio Tinto Group | 3.73% | 4.66% | 7.40% | 5.40% | 10.48% | 10.23% | 5.13% | 7.68% | 6.32% | 4.47% | 3.93% | 7.58% |
SPXSY Spirax-Sarco Engineering PLC | 2.46% | 2.38% | 2.40% | 1.39% | 1.39% | 0.75% | 0.34% | 0.35% | 0.00% | 0.00% | 0.00% | 0.00% |
Financials
SPXSY vs. RIO - Financials Comparison
This section allows you to compare key financial metrics between Spirax-Sarco Engineering PLC and Rio Tinto Group. 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
SPXSY vs. RIO - Profitability Comparison
SPXSY - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Spirax-Sarco Engineering PLC reported a gross profit of 162.89M and revenue of 875.27M. Therefore, the gross margin over that period was 18.6%.
RIO - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Rio Tinto Group reported a gross profit of 8.15B and revenue of 30.65B. Therefore, the gross margin over that period was 26.6%.
SPXSY - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Spirax-Sarco Engineering PLC reported an operating income of 162.89M and revenue of 875.27M, resulting in an operating margin of 18.6%.
RIO - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Rio Tinto Group reported an operating income of 8.15B and revenue of 30.65B, resulting in an operating margin of 26.6%.
SPXSY - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Spirax-Sarco Engineering PLC reported a net income of 100.08M and revenue of 875.27M, resulting in a net margin of 11.4%.
RIO - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Rio Tinto Group reported a net income of 5.42B and revenue of 30.65B, resulting in a net margin of 17.7%.
Frequently Asked Questions
SPXSY and RIO have a correlation of 0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RIO has higher volatility (11.49%) compared to SPXSY (10.95%). In terms of maximum drawdown, SPXSY dropped -67.73% vs RIO's -88.97%.
RIO currently has the higher Sharpe Ratio (3.29 vs 0.70), 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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