III.L vs. HEI

Last updated Jun 13, 2026

III.L (3I Group plc) and HEI (HEICO Corporation) are both stocks. III.L operates in Investment Banking & Investment Services (Financial Services), while HEI operates in Aerospace & Defense (Industrials). Over the past 10 years, III.L returned 19.84%/yr vs 26.63%/yr for HEI. At a 0.21 correlation, their price movements are largely independent.

Performance

III.L vs. HEI - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in 3I Group plc (III.L) and HEICO Corporation (HEI). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

III.L is traded in GBp, while HEI is traded in USD. To make them comparable, the HEI values have been converted to GBp using the latest available exchange rates.

Returns By Period

In the year-to-date period, III.L achieves a -29.24% return, which is significantly lower than HEI's 3.04% return. Over the past 10 years, III.L has underperformed HEI with an annualized return of 19.84%, while HEI has yielded a comparatively higher 26.63% annualized return.

III.L

• 1D: 3.78%
• 1M: -4.63%
• YTD: -29.24%
• 6M: -26.18%
• 1Y: -43.66%
• 3Y*: 7.01%
• 5Y*: 16.34%
• 10Y*: 19.84%

HEI

• 1D: -2.16%
• 1M: 14.64%
• YTD: 3.04%
• 6M: 6.58%
• 1Y: 10.85%
• 3Y*: 23.82%
• 5Y*: 19.62%
• 10Y*: 26.63%

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

III.L vs. HEI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
III.L 3I Group plc	-29.24%	-6.44%	50.11%	85.46%	-3.46%	28.99%	9.36%	47.12%	-11.76%	33.70%
HEI HEICO Corporation	3.04%	26.52%	35.38%	10.74%	19.35%	10.10%	12.74%	41.93%	36.13%	39.81%

Correlation

The correlation between III.L and HEI is 0.16, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.16
Correlation (3Y) Calculated over the trailing 3-year period	0.11
Correlation (5Y) Calculated over the trailing 5-year period	0.14
Correlation (10Y) Calculated over the trailing 10-year period	0.19
Correlation (All Time) Calculated using the full available price history since Jul 11, 2007	0.21

Fundamentals

Market Cap III.L : £23.50B HEI : $46.77B
EPS III.L : £10.41 HEI : $5.60
PE Ratio III.L : 2.22 HEI : 59.22
PEG Ratio III.L : 0.27 HEI : 2.67
PS Ratio III.L : 10.82 HEI : 9.52
PB Ratio III.L : 0.76 HEI : 8.68
Total Revenue (TTM) III.L : £2.12B HEI : $4.91B
Gross Profit (TTM) III.L : £5.57B HEI : $943.00M
EBITDA (TTM) III.L : £9.82B HEI : $1.12B

Return for Risk

III.L vs. HEI — Risk / Return Rank

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

III.L

III.L Risk / Return Rank: 7
III.L Sharpe Ratio Rank: 5
III.L Sortino Ratio Rank: 8
III.L Omega Ratio Rank: 6
III.L Calmar Ratio Rank: 11
III.L Martin Ratio Rank: 4

HEI

HEI Risk / Return Rank: 50
HEI Sharpe Ratio Rank: 53
HEI Sortino Ratio Rank: 48
HEI Omega Ratio Rank: 48
HEI Calmar Ratio Rank: 51
HEI Martin Ratio Rank: 52

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.

III.L vs. HEI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for 3I Group plc (III.L) and HEICO Corporation (HEI). 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.

	III.L	HEI	Difference
Sharpe ratio: Return per unit of total volatility	-1.00	0.33	-1.34
Sortino ratio: Return per unit of downside risk	-1.34	0.71	-2.05
Omega ratio: Gain probability vs. loss probability	0.80	1.09	-0.29
Calmar ratio: Return relative to maximum drawdown	-0.82	0.39	-1.22
Martin ratio: Return relative to average drawdown	-1.63	0.94	-2.57

III.L vs. HEI - Sharpe Ratio Comparison

The current III.L Sharpe Ratio is -1.00, which is lower than the HEI Sharpe Ratio of 0.33. The chart below compares the historical Sharpe Ratios of III.L and HEI, 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

III.L vs. HEI - Drawdown Comparison

The maximum III.L drawdown since its inception was -84.90%, which is greater than HEI's maximum drawdown of -55.55%. Use the drawdown chart below to compare losses from any high point for III.L and HEI.

Drawdown Indicators

	III.L	HEI	Difference
Max Drawdown Largest peak-to-trough decline	-84.90%	-55.55%	-29.35%
Max Drawdown (1Y) Largest decline over 1 year	-52.78%	-27.63%	-25.15%
Max Drawdown (3Y) Largest decline over 3 years	-52.78%	-27.63%	-25.15%
Max Drawdown (5Y) Largest decline over 5 years	-52.78%	-27.63%	-25.15%
Max Drawdown (10Y) Largest decline over 10 years	-52.78%	-55.55%	+2.77%
Current Drawdown Current decline from peak	-47.63%	-7.54%	-40.09%
Average Drawdown Average peak-to-trough decline	-23.08%	-11.57%	-11.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	26.82%	11.56%	+15.26%

Volatility

III.L vs. HEI - Volatility Comparison

3I Group plc (III.L) has a higher volatility of 19.01% compared to HEICO Corporation (HEI) at 14.40%. This indicates that III.L's price experiences larger fluctuations and is considered to be riskier than HEI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	III.L	HEI	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.01%	14.40%	+4.61%
Volatility (6M) Calculated over the trailing 6-month period	37.16%	26.95%	+10.21%
Volatility (1Y) Calculated over the trailing 1-year period	43.35%	32.90%	+10.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	30.78%	27.27%	+3.51%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	30.35%	30.61%	-0.26%

Dividends

III.L vs. HEI - Dividend Comparison

III.L's dividend yield for the trailing twelve months is around 3.42%, more than HEI's 0.07% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
HEI HEICO Corporation	0.07%	0.07%	0.09%	0.11%	0.12%	0.12%	0.12%	0.12%	0.14%	0.08%	0.22%	0.28%
III.L 3I Group plc	3.42%	2.42%	1.82%	2.32%	3.76%	2.78%	3.02%	3.42%	4.78%	2.90%	3.41%	2.37%

Financials

Frequently Asked Questions

Can I hold both III.L and HEI in my portfolio?

III.L and HEI have a correlation of 0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.