SIF vs. NPK

Last updated Jun 4, 2026

SIF (SIFCO Industries, Inc.) and NPK (National Presto Industries, Inc.) are both stocks. Both operate in the Aerospace & Defense industry within the Industrials sector. Over the past 10 years, SIF returned 8.07%/yr vs 7.75%/yr for NPK. At a 0.09 correlation, their price movements are largely independent.

Performance

SIF vs. NPK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SIFCO Industries, Inc. (SIF) and National Presto Industries, Inc. (NPK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SIF achieves a 258.24% return, which is significantly higher than NPK's 21.09% return. Both investments have delivered pretty close results over the past 10 years, with SIF having a 8.07% annualized return and NPK not far behind at 7.75%.

SIF

• 1D: 0.76%
• 1M: 24.78%
• YTD: 258.24%
• 6M: 212.83%
• 1Y: 444.69%
• 3Y*: 102.71%
• 5Y*: 14.63%
• 10Y*: 8.07%

NPK

• 1D: -0.01%
• 1M: -3.18%
• YTD: 21.09%
• 6M: 36.73%
• 1Y: 50.24%
• 3Y*: 21.00%
• 5Y*: 9.29%
• 10Y*: 7.75%

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

SIF vs. NPK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SIF SIFCO Industries, Inc.	258.24%	57.40%	-21.92%	110.21%	-66.77%	-22.62%	112.66%	14.49%	-48.12%	-13.07%
NPK National Presto Industries, Inc.	21.09%	9.58%	29.95%	23.81%	-11.79%	-1.82%	1.22%	-21.10%	24.93%	-2.55%

Correlation

The correlation between SIF and NPK is 0.18, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.18
Correlation (3Y) Calculated over the trailing 3-year period	0.16
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (10Y) Calculated over the trailing 10-year period	0.10
Correlation (All Time) Calculated using the full available price history since Dec 31, 1987	0.09

Fundamentals

Market Cap SIF : $123.66M NPK : $918.79M
EPS SIF : $1.20 NPK : $4.49
PE Ratio SIF : 16.61 NPK : 28.57
PEG Ratio SIF : 1.02 NPK : 2.47
PS Ratio SIF : 1.29 NPK : 1.77
Total Revenue (TTM) SIF : $95.32M NPK : $518.53M
Gross Profit (TTM) SIF : $18.94M NPK : $79.31M
EBITDA (TTM) SIF : $12.65M NPK : $45.82M

Return for Risk

SIF vs. NPK — Risk / Return Rank

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

SIF

SIF Risk / Return Rank: 98
SIF Sharpe Ratio Rank: 99
SIF Sortino Ratio Rank: 97
SIF Omega Ratio Rank: 95
SIF Calmar Ratio Rank: 99
SIF Martin Ratio Rank: 99

NPK

NPK Risk / Return Rank: 76
NPK Sharpe Ratio Rank: 79
NPK Sortino Ratio Rank: 73
NPK Omega Ratio Rank: 73
NPK Calmar Ratio Rank: 76
NPK Martin Ratio Rank: 78

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.

SIF vs. NPK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SIFCO Industries, Inc. (SIF) and National Presto Industries, Inc. (NPK). 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.

	SIF	NPK	Difference
Sharpe ratio Return per unit of total volatility	5.13	1.38	+3.76
Sortino ratio Return per unit of downside risk	4.79	1.85	+2.94
Omega ratio Gain probability vs. loss probability	1.58	1.24	+0.33
Calmar ratio Return relative to maximum drawdown	16.07	2.17	+13.90
Martin ratio Return relative to average drawdown	43.61	6.02	+37.59
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SIF vs. NPK - Sharpe Ratio Comparison

The current SIF Sharpe Ratio is 5.13, which is higher than the NPK Sharpe Ratio of 1.38. The chart below compares the historical Sharpe Ratios of SIF and NPK, 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

	SIF	NPK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	5.13	1.38	+3.76
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.21	0.35	-0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.11	0.27	-0.16
Sharpe Ratio (All Time) Calculated using the full available price history	0.07	0.36	-0.29

Drawdowns

SIF vs. NPK - Drawdown Comparison

The maximum SIF drawdown since its inception was -94.46%, which is greater than NPK's maximum drawdown of -53.91%. Use the drawdown chart below to compare losses from any high point for SIF and NPK.

Drawdown Indicators

	SIF	NPK	Difference
Max Drawdown Largest peak-to-trough decline	-94.46%	-53.91%	-40.55%
Max Drawdown (1Y) Largest decline over 1 year	-27.90%	-23.32%	-4.58%
Max Drawdown (3Y) Largest decline over 3 years	-57.30%	-23.32%	-33.98%
Max Drawdown (5Y) Largest decline over 5 years	-81.02%	-37.21%	-43.81%
Max Drawdown (10Y) Largest decline over 10 years	-85.64%	-49.16%	-36.48%
Current Drawdown Current decline from peak	-43.87%	-12.42%	-31.45%
Average Drawdown Average peak-to-trough decline	-55.77%	-25.04%	-30.73%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.26%	8.37%	+1.89%

Volatility

SIF vs. NPK - Volatility Comparison

SIFCO Industries, Inc. (SIF) has a higher volatility of 29.18% compared to National Presto Industries, Inc. (NPK) at 15.88%. This indicates that SIF's price experiences larger fluctuations and is considered to be riskier than NPK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SIF	NPK	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.18%	15.88%	+13.30%
Volatility (6M) Calculated over the trailing 6-month period	70.37%	27.97%	+42.40%
Volatility (1Y) Calculated over the trailing 1-year period	87.74%	36.63%	+51.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	68.81%	26.93%	+41.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	73.46%	28.53%	+44.93%

Dividends

SIF vs. NPK - Dividend Comparison

SIF has not paid dividends to shareholders, while NPK's dividend yield for the trailing twelve months is around 0.78%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NPK National Presto Industries, Inc.	0.78%	0.94%	4.57%	4.98%	6.57%	7.62%	1.13%	5.66%	5.13%	4.52%	4.75%	4.89%
SIF SIFCO Industries, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

SIF vs. NPK - Profitability Comparison

The chart below illustrates the profitability comparison between SIFCO Industries, Inc. and National Presto Industries, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

SIF - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, SIFCO Industries, Inc. reported a gross profit of 5.66M and revenue of 26.44M. Therefore, the gross margin over that period was 21.4%.

NPK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, National Presto Industries, Inc. reported a gross profit of 17.48M and revenue of 118.65M. Therefore, the gross margin over that period was 14.7%.

SIF - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, SIFCO Industries, Inc. reported an operating income of 2.66M and revenue of 26.44M, resulting in an operating margin of 10.1%.

NPK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, National Presto Industries, Inc. reported an operating income of 8.03M and revenue of 118.65M, resulting in an operating margin of 6.8%.

SIF - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, SIFCO Industries, Inc. reported a net income of 2.65M and revenue of 26.44M, resulting in a net margin of 10.0%.

NPK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, National Presto Industries, Inc. reported a net income of 6.63M and revenue of 118.65M, resulting in a net margin of 5.6%.

Frequently Asked Questions

Can I hold both SIF and NPK in my portfolio?

SIF and NPK have a correlation of 0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SIF or NPK?

SIF has higher volatility (29.18%) compared to NPK (15.88%). In terms of maximum drawdown, SIF dropped -94.46% vs NPK's -53.91%.

Which has better risk-adjusted returns?

SIF currently has the higher Sharpe Ratio (5.13 vs 1.38), 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.