ESLA vs. NPKI

Last updated Aug 1, 2026

ESLA (Estrella Immunopharma Inc.) and NPKI (NPK International Inc) are both stocks. ESLA operates in Biotechnology (Healthcare), while NPKI operates in Oil & Gas Equipment & Services (Energy). Over the past 3 years, ESLA returned -60.00%/yr vs 30.89%/yr for NPKI. Their 0.07 correlation means their historical movements had little consistent relationship.

Performance

ESLA vs. NPKI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Estrella Immunopharma Inc. (ESLA) and NPK International Inc (NPKI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ESLA achieves a -54.25% return, which is significantly lower than NPKI's 4.78% return.

ESLA

• 1D: -0.89%
• 1M: -27.36%
• 6M: -36.28%
• YTD: -54.25%
• 1Y: -16.52%
• 3Y*: -60.00%
• 5Y*: —
• 10Y*: —
• ALL TIME*: -41.63%

NPKI

• 1D: 0.24%
• 1M: -12.72%
• 6M: -9.56%
• YTD: 4.78%
• 1Y: 43.40%
• 3Y*: 30.89%
• 5Y*: 31.06%
• 10Y*: 7.19%
• ALL TIME*: 5.04%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ESLA Estrella Immunopharma Inc.	$22.97K	$34.41K	$39.55K
NPKI NPK International Inc	$12.78M	$12.49M	$14.68M

ESLA vs. NPKI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ESLA Estrella Immunopharma Inc.	-54.25%	30.00%	8.11%	-89.21%	3.83%	0.61%
NPKI NPK International Inc	4.78%	55.41%	15.51%	60.00%	41.16%	8.49%

Correlation

The correlation between ESLA and NPKI is 0.17, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.17
Correlation (3Y) Balances recent behavior with more history.	0.11
Correlation (All Time) Calculated using the full available price history since Sep 14, 2021	0.07

The correlation between ESLA and NPKI shifts across timeframes, from 0.07 (all time) to 0.17 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap ESLA : $30.71M NPKI : $1.05B
EPS ESLA : -$0.34 NPKI : $0.45
Total Revenue (TTM) ESLA : $0.00 NPKI : $300.69M
Gross Profit (TTM) ESLA : $0.00 NPKI : $106.08M
EBITDA (TTM) ESLA : -$13.25M NPKI : $57.53M

Return for Risk

ESLA vs. NPKI — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ESLA

ESLA Risk / Return Rank: 43
ESLA Sharpe Ratio Rank: 39
ESLA Sortino Ratio Rank: 50
ESLA Omega Ratio Rank: 48
ESLA Calmar Ratio Rank: 38
ESLA Martin Ratio Rank: 39

NPKI

NPKI Risk / Return Rank: 73
NPKI Sharpe Ratio Rank: 75
NPKI Sortino Ratio Rank: 69
NPKI Omega Ratio Rank: 69
NPKI Calmar Ratio Rank: 73
NPKI Martin Ratio Rank: 80

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ESLA vs. NPKI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Estrella Immunopharma Inc. (ESLA) and NPK International Inc (NPKI). 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.

	ESLA	NPKI	Difference
Sharpe ratio: Return per unit of total volatility	-0.13	0.97	-1.11
Sortino ratio: Return per unit of downside risk	0.65	1.44	-0.80
Omega ratio: Gain probability vs. loss probability	1.08	1.19	-0.11
Calmar ratio: Return relative to maximum drawdown	-0.20	1.47	-1.67
Martin ratio: Return relative to average drawdown	-0.30	5.19	-5.50

ESLA vs. NPKI - Sharpe Ratio Comparison

The current ESLA Sharpe Ratio is -0.13, which is lower than the NPKI Sharpe Ratio of 0.97. The chart below compares the historical Sharpe Ratios of ESLA and NPKI, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

ESLA vs. NPKI - Drawdown Comparison

The maximum ESLA drawdown since its inception was -96.64%, roughly equal to the maximum NPKI drawdown of -97.22%. Use the drawdown chart below to compare losses from any high point for ESLA and NPKI.

Drawdown Indicators

	ESLA	NPKI	Difference
Max Drawdown Largest peak-to-trough decline	-96.64%	-97.22%	+0.58%
Max Drawdown (1Y) Largest decline over 1 year	-76.60%	-26.30%	-50.30%
Max Drawdown (3Y) Largest decline over 3 years	-96.64%	-42.11%	-54.53%
Max Drawdown (5Y) Largest decline over 5 years	—	-49.37%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-94.07%	—
Current Drawdown Current decline from peak	-96.64%	-48.09%	-48.55%
Average Drawdown Average peak-to-trough decline	-56.67%	-60.01%	+3.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	49.82%	7.43%	+42.39%

Volatility

ESLA vs. NPKI - Volatility Comparison

Estrella Immunopharma Inc. (ESLA) has a higher volatility of 23.99% compared to NPK International Inc (NPKI) at 13.56%. This indicates that ESLA's price experiences larger fluctuations and is considered to be riskier than NPKI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ESLA	NPKI	Difference
Volatility (1M) Calculated over the trailing 1-month period	23.99%	13.56%	+10.43%
Volatility (6M) Calculated over the trailing 6-month period	67.89%	31.35%	+36.54%
Volatility (1Y) Calculated over the trailing 1-year period	112.41%	39.65%	+72.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	133.39%	49.24%	+84.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	133.39%	62.16%	+71.23%

Dividends

ESLA vs. NPKI - Dividend Comparison

Neither ESLA nor NPKI has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both ESLA and NPKI in my portfolio?

ESLA and NPKI have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ESLA or NPKI?

ESLA has higher volatility (23.99%) compared to NPKI (13.56%). In terms of maximum drawdown, ESLA dropped -96.64% vs NPKI's -97.22%.

Which has better risk-adjusted returns?

NPKI currently has the higher Sharpe Ratio (0.97 vs -0.13), 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.