ACHR vs. RKLB

Last updated Jun 13, 2026

ACHR (Archer Aviation Inc.) and RKLB (Rocket Lab USA, Inc.) are both stocks. Both operate in the Aerospace & Defense industry within the Industrials sector. Over the past 3 years, ACHR returned 4.91%/yr vs 158.32%/yr for RKLB. A 0.54 correlation means they provide meaningful diversification when combined.

Performance

ACHR vs. RKLB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Archer Aviation Inc. (ACHR) and Rocket Lab USA, Inc. (RKLB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ACHR achieves a -32.45% return, which is significantly lower than RKLB's 46.77% return.

ACHR

• 1D: -4.15%
• 1M: -22.09%
• YTD: -32.45%
• 6M: -38.80%
• 1Y: -56.69%
• 3Y*: 4.91%
• 5Y*: -12.65%
• 10Y*: —

RKLB

• 1D: -10.79%
• 1M: -17.53%
• YTD: 46.77%
• 6M: 66.51%
• 1Y: 287.84%
• 3Y*: 158.32%
• 5Y*: —
• 10Y*: —

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

ACHR vs. RKLB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ACHR Archer Aviation Inc.	-32.45%	-22.87%	58.79%	228.34%	-69.04%	-39.42%
RKLB Rocket Lab USA, Inc.	46.77%	173.89%	360.58%	46.68%	-69.30%	8.67%

Correlation

The correlation between ACHR and RKLB is 0.63, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.63
Correlation (3Y) Calculated over the trailing 3-year period	0.58
Correlation (All Time) Calculated using the full available price history since Aug 24, 2021	0.54

The correlation between ACHR and RKLB has been stable across timeframes, ranging from 0.54 to 0.63 - a consistent structural relationship.

Fundamentals

Market Cap ACHR : $3.90B RKLB : $61.99B
EPS ACHR : -$1.36 RKLB : -$0.33
PS Ratio ACHR : 1.46K RKLB : 83.69
PB Ratio ACHR : 1.87 RKLB : 27.38
Total Revenue (TTM) ACHR : $1.90M RKLB : $679.58M
Gross Profit (TTM) ACHR : $300.00K RKLB : $248.43M
EBITDA (TTM) ACHR : -$712.00M RKLB : -$177.36M

Return for Risk

ACHR vs. RKLB — Risk / Return Rank

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

ACHR

ACHR Risk / Return Rank: 10
ACHR Sharpe Ratio Rank: 10
ACHR Sortino Ratio Rank: 10
ACHR Omega Ratio Rank: 12
ACHR Calmar Ratio Rank: 7
ACHR Martin Ratio Rank: 10

RKLB

RKLB Risk / Return Rank: 93
RKLB Sharpe Ratio Rank: 96
RKLB Sortino Ratio Rank: 91
RKLB Omega Ratio Rank: 88
RKLB Calmar Ratio Rank: 95
RKLB Martin Ratio Rank: 94

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.

ACHR vs. RKLB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Archer Aviation Inc. (ACHR) and Rocket Lab USA, Inc. (RKLB). 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.

	ACHR	RKLB	Difference
Sharpe ratio: Return per unit of total volatility	-0.80	3.12	-3.92
Sortino ratio: Return per unit of downside risk	-1.16	3.13	-4.29
Omega ratio: Gain probability vs. loss probability	0.87	1.38	-0.51
Calmar ratio: Return relative to maximum drawdown	-0.89	6.74	-7.63
Martin ratio: Return relative to average drawdown	-1.39	15.44	-16.82

ACHR vs. RKLB - Sharpe Ratio Comparison

The current ACHR Sharpe Ratio is -0.80, which is lower than the RKLB Sharpe Ratio of 3.12. The chart below compares the historical Sharpe Ratios of ACHR and RKLB, 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

ACHR vs. RKLB - Drawdown Comparison

The maximum ACHR drawdown since its inception was -90.49%, which is greater than RKLB's maximum drawdown of -82.96%. Use the drawdown chart below to compare losses from any high point for ACHR and RKLB.

Drawdown Indicators

	ACHR	RKLB	Difference
Max Drawdown Largest peak-to-trough decline	-90.49%	-82.96%	-7.53%
Max Drawdown (1Y) Largest decline over 1 year	-63.78%	-43.01%	-20.77%
Max Drawdown (3Y) Largest decline over 3 years	-63.78%	-55.49%	-8.29%
Max Drawdown (5Y) Largest decline over 5 years	-84.00%	—	—
Current Drawdown Current decline from peak	-70.36%	-31.84%	-38.52%
Average Drawdown Average peak-to-trough decline	-62.48%	-51.29%	-11.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	41.04%	18.75%	+22.29%

Volatility

ACHR vs. RKLB - Volatility Comparison

The current volatility for Archer Aviation Inc. (ACHR) is 21.42%, while Rocket Lab USA, Inc. (RKLB) has a volatility of 31.54%. This indicates that ACHR experiences smaller price fluctuations and is considered to be less risky than RKLB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACHR	RKLB	Difference
Volatility (1M) Calculated over the trailing 1-month period	21.42%	31.54%	-10.12%
Volatility (6M) Calculated over the trailing 6-month period	44.68%	73.47%	-28.79%
Volatility (1Y) Calculated over the trailing 1-year period	70.77%	93.03%	-22.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	84.32%	81.62%	+2.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	82.16%	81.62%	+0.54%

Dividends

ACHR vs. RKLB - Dividend Comparison

Neither ACHR nor RKLB has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both ACHR and RKLB in my portfolio?

ACHR and RKLB have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACHR or RKLB?

RKLB has higher volatility (31.54%) compared to ACHR (21.42%). In terms of maximum drawdown, ACHR dropped -90.49% vs RKLB's -82.96%.

Which has better risk-adjusted returns?

RKLB currently has the higher Sharpe Ratio (3.12 vs -0.80), 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.