GCTS vs. ATOM

Last updated Jun 4, 2026

GCTS (GCT Semiconductor Holding Inc) and ATOM (Atomera Incorporated) are both stocks. Both are in the Technology sector — GCTS in Semiconductors, ATOM in Semiconductor Equipment & Materials. Over the past year, GCTS returned 217.65% vs 45.14% for ATOM. At a 0.18 correlation, their price movements are largely independent.

Performance

GCTS vs. ATOM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in GCT Semiconductor Holding Inc (GCTS) and Atomera Incorporated (ATOM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GCTS achieves a 170.00% return, which is significantly lower than ATOM's 311.76% return.

GCTS

• 1D: -6.36%
• 1M: 117.45%
• YTD: 170.00%
• 6M: 128.17%
• 1Y: 217.65%
• 3Y*: —
• 5Y*: —
• 10Y*: —

ATOM

• 1D: -7.61%
• 1M: -12.25%
• YTD: 311.76%
• 6M: 269.92%
• 1Y: 45.14%
• 3Y*: 1.70%
• 5Y*: -15.17%
• 10Y*: —

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

GCTS vs. ATOM - Yearly Performance Comparison

	2026 (YTD)	2025	2024
GCTS GCT Semiconductor Holding Inc	170.00%	-48.50%	-94.70%
ATOM Atomera Incorporated	311.76%	-80.95%	92.37%

Correlation

The correlation between GCTS and ATOM is 0.15, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.15
Correlation (All Time) Calculated using the full available price history since Mar 28, 2024	0.18

Fundamentals

Market Cap GCTS : $214.07M ATOM : $320.83M
EPS GCTS : -$0.82 ATOM : -$0.66
PS Ratio GCTS : 42.69 ATOM : 4.06K
Total Revenue (TTM) GCTS : $4.29M ATOM : $72.00K
Gross Profit (TTM) GCTS : -$958.00K ATOM : -$714.00K
EBITDA (TTM) GCTS : -$35.77M ATOM : -$20.90M

Return for Risk

GCTS vs. ATOM — Risk / Return Rank

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

GCTS

GCTS Risk / Return Rank: 89
GCTS Sharpe Ratio Rank: 90
GCTS Sortino Ratio Rank: 91
GCTS Omega Ratio Rank: 87
GCTS Calmar Ratio Rank: 91
GCTS Martin Ratio Rank: 87

ATOM

ATOM Risk / Return Rank: 59
ATOM Sharpe Ratio Rank: 52
ATOM Sortino Ratio Rank: 70
ATOM Omega Ratio Rank: 66
ATOM Calmar Ratio Rank: 55
ATOM 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.

GCTS vs. ATOM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for GCT Semiconductor Holding Inc (GCTS) and Atomera Incorporated (ATOM). 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.

	GCTS	ATOM	Difference
Sharpe ratio Return per unit of total volatility	2.30	0.31	+1.98
Sortino ratio Return per unit of downside risk	3.34	1.75	+1.60
Omega ratio Gain probability vs. loss probability	1.39	1.21	+0.19
Calmar ratio Return relative to maximum drawdown	5.01	0.67	+4.34
Martin ratio Return relative to average drawdown	9.65	1.09	+8.56
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GCTS vs. ATOM - Sharpe Ratio Comparison

The current GCTS Sharpe Ratio is 2.30, which is higher than the ATOM Sharpe Ratio of 0.31. The chart below compares the historical Sharpe Ratios of GCTS and ATOM, 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

	GCTS	ATOM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.30	0.31	+1.98
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	-0.14	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.60	0.01	-0.61

Drawdowns

GCTS vs. ATOM - Drawdown Comparison

The maximum GCTS drawdown since its inception was -97.75%, roughly equal to the maximum ATOM drawdown of -95.72%. Use the drawdown chart below to compare losses from any high point for GCTS and ATOM.

Drawdown Indicators

	GCTS	ATOM	Difference
Max Drawdown Largest peak-to-trough decline	-97.75%	-95.72%	-2.03%
Max Drawdown (1Y) Largest decline over 1 year	-43.77%	-68.16%	+24.39%
Max Drawdown (3Y) Largest decline over 3 years	—	-87.98%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-93.74%	—
Current Drawdown Current decline from peak	-92.64%	-80.41%	-12.23%
Average Drawdown Average peak-to-trough decline	-94.45%	-62.62%	-31.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	22.66%	41.65%	-18.99%

Volatility

GCTS vs. ATOM - Volatility Comparison

GCT Semiconductor Holding Inc (GCTS) has a higher volatility of 53.94% compared to Atomera Incorporated (ATOM) at 46.72%. This indicates that GCTS's price experiences larger fluctuations and is considered to be riskier than ATOM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GCTS	ATOM	Difference
Volatility (1M) Calculated over the trailing 1-month period	53.94%	46.72%	+7.22%
Volatility (6M) Calculated over the trailing 6-month period	74.10%	112.27%	-38.17%
Volatility (1Y) Calculated over the trailing 1-year period	95.44%	144.19%	-48.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	116.52%	105.76%	+10.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	116.52%	95.47%	+21.05%

Dividends

GCTS vs. ATOM - Dividend Comparison

Neither GCTS nor ATOM has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both GCTS and ATOM in my portfolio?

GCTS and ATOM have a correlation of 0.15, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GCTS or ATOM?

GCTS has higher volatility (53.94%) compared to ATOM (46.72%). In terms of maximum drawdown, GCTS dropped -97.75% vs ATOM's -95.72%.

Which has better risk-adjusted returns?

GCTS currently has the higher Sharpe Ratio (2.30 vs 0.31), 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.