LDOS vs. STX

Last updated Jun 9, 2026

LDOS (Leidos Holdings, Inc.) and STX (Seagate Technology plc) are both stocks. Both are in the Technology sector — LDOS in Information Technology Services, STX in Computer Hardware. Over the past 10 years, LDOS returned 15.01%/yr vs 49.93%/yr for STX. At a 0.30 correlation, their price movements are largely independent.

Performance

LDOS vs. STX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Leidos Holdings, Inc. (LDOS) and Seagate Technology plc (STX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LDOS achieves a -31.76% return, which is significantly lower than STX's 218.93% return. Over the past 10 years, LDOS has underperformed STX with an annualized return of 15.01%, while STX has yielded a comparatively higher 49.93% annualized return.

LDOS

• 1D: -1.31%
• 1M: -5.62%
• YTD: -31.76%
• 6M: -33.53%
• 1Y: -16.31%
• 3Y*: 15.32%
• 5Y*: 4.53%
• 10Y*: 15.01%

STX

• 1D: 3.46%
• 1M: 12.03%
• YTD: 218.93%
• 6M: 208.54%
• 1Y: 599.43%
• 3Y*: 149.84%
• 5Y*: 59.24%
• 10Y*: 49.93%

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

LDOS vs. STX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LDOS Leidos Holdings, Inc.	-31.76%	26.50%	34.52%	4.50%	20.04%	-14.20%	8.95%	88.82%	-16.72%	29.14%
STX Seagate Technology plc	218.93%	225.26%	4.06%	69.12%	-51.42%	87.50%	10.14%	62.14%	-2.90%	16.67%

Correlation

The correlation between LDOS and STX is 0.02, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.02
Correlation (3Y) Calculated over the trailing 3-year period	0.13
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (10Y) Calculated over the trailing 10-year period	0.27
Correlation (All Time) Calculated using the full available price history since Oct 13, 2006	0.30

Over the past year, the correlation between LDOS and STX has dropped to 0.02 - well below their long-term average of 0.30, suggesting their price drivers have been diverging.

Fundamentals

Market Cap LDOS : $15.72B STX : $199.90B
EPS LDOS : $10.92 STX : $10.58
PE Ratio LDOS : 11.25 STX : 82.87
PEG Ratio LDOS : 0.09 STX : 0.99
PS Ratio LDOS : 0.92 STX : 17.90
PB Ratio LDOS : 3.14 STX : 182.56
Total Revenue (TTM) LDOS : $17.33B STX : $11.01B
Gross Profit (TTM) LDOS : $3.04B STX : $4.57B
EBITDA (TTM) LDOS : $2.34B STX : $2.59B

Return for Risk

LDOS vs. STX — Risk / Return Rank

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

LDOS

LDOS Risk / Return Rank: 20
LDOS Sharpe Ratio Rank: 18
LDOS Sortino Ratio Rank: 19
LDOS Omega Ratio Rank: 18
LDOS Calmar Ratio Rank: 28
LDOS Martin Ratio Rank: 18

STX

STX Risk / Return Rank: 99
STX Sharpe Ratio Rank: 100
STX Sortino Ratio Rank: 99
STX Omega Ratio Rank: 98
STX Calmar Ratio Rank: 100
STX Martin Ratio Rank: 100

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.

LDOS vs. STX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Leidos Holdings, Inc. (LDOS) and Seagate Technology plc (STX). 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.

	LDOS	STX	Difference
Sharpe ratio: Return per unit of total volatility	-0.56	9.54	-10.10
Sortino ratio: Return per unit of downside risk	-0.60	6.19	-6.79
Omega ratio: Gain probability vs. loss probability	0.92	1.80	-0.88
Calmar ratio: Return relative to maximum drawdown	-0.43	28.81	-29.24
Martin ratio: Return relative to average drawdown	-1.12	84.36	-85.48
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LDOS vs. STX - Sharpe Ratio Comparison

The current LDOS Sharpe Ratio is -0.56, which is lower than the STX Sharpe Ratio of 9.54. The chart below compares the historical Sharpe Ratios of LDOS and STX, 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

	LDOS	STX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.56	9.54	-10.10
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.17	1.34	-1.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	1.19	-0.64
Sharpe Ratio (All Time) Calculated using the full available price history	0.23	0.53	-0.30

Drawdowns

LDOS vs. STX - Drawdown Comparison

The maximum LDOS drawdown since its inception was -54.72%, smaller than the maximum STX drawdown of -88.74%. Use the drawdown chart below to compare losses from any high point for LDOS and STX.

Drawdown Indicators

	LDOS	STX	Difference
Max Drawdown Largest peak-to-trough decline	-54.72%	-88.74%	+34.02%
Max Drawdown (1Y) Largest decline over 1 year	-38.17%	-21.00%	-17.17%
Max Drawdown (3Y) Largest decline over 3 years	-38.17%	-40.00%	+1.83%
Max Drawdown (5Y) Largest decline over 5 years	-38.17%	-56.99%	+18.82%
Max Drawdown (10Y) Largest decline over 10 years	-42.29%	-56.99%	+14.70%
Current Drawdown Current decline from peak	-38.17%	-6.80%	-31.37%
Average Drawdown Average peak-to-trough decline	-19.67%	-26.45%	+6.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	14.55%	7.16%	+7.39%

Volatility

LDOS vs. STX - Volatility Comparison

The current volatility for Leidos Holdings, Inc. (LDOS) is 7.17%, while Seagate Technology plc (STX) has a volatility of 17.98%. This indicates that LDOS experiences smaller price fluctuations and is considered to be less risky than STX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LDOS	STX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.17%	17.98%	-10.81%
Volatility (6M) Calculated over the trailing 6-month period	25.18%	49.95%	-24.77%
Volatility (1Y) Calculated over the trailing 1-year period	29.33%	63.55%	-34.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.74%	44.63%	-17.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.50%	42.18%	-14.68%

Dividends

LDOS vs. STX - Dividend Comparison

LDOS's dividend yield for the trailing twelve months is around 1.35%, more than STX's 0.33% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LDOS Leidos Holdings, Inc.	1.35%	0.90%	1.07%	1.35%	1.37%	1.57%	1.29%	1.35%	2.43%	1.98%	29.17%	3.41%
STX Seagate Technology plc	0.33%	1.05%	3.27%	3.28%	5.32%	2.40%	4.21%	4.27%	6.53%	6.02%	6.60%	6.14%

Financials

LDOS vs. STX - Profitability Comparison

The chart below illustrates the profitability comparison between Leidos Holdings, Inc. and Seagate Technology plc over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

LDOS - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Leidos Holdings, Inc. reported a gross profit of 761.00M and revenue of 4.40B. Therefore, the gross margin over that period was 17.3%.

STX - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Seagate Technology plc reported a gross profit of 1.45B and revenue of 3.11B. Therefore, the gross margin over that period was 46.5%.

LDOS - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Leidos Holdings, Inc. reported an operating income of 508.00M and revenue of 4.40B, resulting in an operating margin of 11.6%.

STX - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Seagate Technology plc reported an operating income of 982.00M and revenue of 3.11B, resulting in an operating margin of 31.6%.

LDOS - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Leidos Holdings, Inc. reported a net income of 328.00M and revenue of 4.40B, resulting in a net margin of 7.5%.

STX - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Seagate Technology plc reported a net income of 748.00M and revenue of 3.11B, resulting in a net margin of 24.0%.

Frequently Asked Questions

Can I hold both LDOS and STX in my portfolio?

LDOS and STX have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LDOS or STX?

STX has higher volatility (17.98%) compared to LDOS (7.17%). In terms of maximum drawdown, LDOS dropped -54.72% vs STX's -88.74%.

Which has better risk-adjusted returns?

STX currently has the higher Sharpe Ratio (9.54 vs -0.56), 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.