NTTYY vs. SOBKY

Last updated Jun 3, 2026

NTTYY (Nippon Telegraph and Telephone Corp ADR) and SOBKY (SoftBank Corp) are both stocks. Both operate in the Telecom Services industry within the Communication Services sector. Over the past 5 years, NTTYY returned -1.98%/yr vs 1.93%/yr for SOBKY. At a 0.41 correlation, their price movements are largely independent.

Performance

NTTYY vs. SOBKY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nippon Telegraph and Telephone Corp ADR (NTTYY) and SoftBank Corp (SOBKY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NTTYY achieves a -7.93% return, which is significantly lower than SOBKY's -0.29% return.

NTTYY

• 1D: -0.17%
• 1M: -3.86%
• YTD: -7.93%
• 6M: -7.08%
• 1Y: -16.06%
• 3Y*: -6.17%
• 5Y*: -1.98%
• 10Y*: 2.00%

SOBKY

• 1D: 0.74%
• 1M: -2.58%
• YTD: -0.29%
• 6M: -2.09%
• 1Y: -11.91%
• 3Y*: 9.61%
• 5Y*: 1.93%
• 10Y*: —

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

NTTYY vs. SOBKY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
NTTYY Nippon Telegraph and Telephone Corp ADR	-7.93%	2.79%	-16.66%	7.84%	3.06%	8.63%	1.78%	19.41%
SOBKY SoftBank Corp	-0.29%	10.81%	4.12%	9.74%	-10.64%	-0.24%	-3.88%	13.19%

Correlation

The correlation between NTTYY and SOBKY is 0.60, 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	0.60
Correlation (3Y) Calculated over the trailing 3-year period	0.57
Correlation (5Y) Calculated over the trailing 5-year period	0.53
Correlation (All Time) Calculated using the full available price history since Mar 29, 2019	0.41

The correlation between NTTYY and SOBKY shifts across timeframes, from 0.41 (all time) to 0.60 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap NTTYY : $74.56B SOBKY : $65.37B
EPS NTTYY : $320.51 SOBKY : $115.22
PE Ratio NTTYY : 0.07 SOBKY : 0.12
PEG Ratio NTTYY : 0.06 SOBKY : 0.05
PS Ratio NTTYY : 0.01 SOBKY : 0.01
PB Ratio NTTYY : 0.01 SOBKY : 0.02
Total Revenue (TTM) NTTYY : $14.61T SOBKY : $7.14T
Gross Profit (TTM) NTTYY : $2.67T SOBKY : $3.43T
EBITDA (TTM) NTTYY : $3.73T SOBKY : $1.86T

Return for Risk

NTTYY vs. SOBKY — Risk / Return Rank

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

NTTYY

NTTYY Risk / Return Rank: 5
NTTYY Sharpe Ratio Rank: 5
NTTYY Sortino Ratio Rank: 6
NTTYY Omega Ratio Rank: 9
NTTYY Calmar Ratio Rank: 2
NTTYY Martin Ratio Rank: 3

SOBKY

SOBKY Risk / Return Rank: 17
SOBKY Sharpe Ratio Rank: 13
SOBKY Sortino Ratio Rank: 13
SOBKY Omega Ratio Rank: 15
SOBKY Calmar Ratio Rank: 21
SOBKY Martin Ratio Rank: 24

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.

NTTYY vs. SOBKY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nippon Telegraph and Telephone Corp ADR (NTTYY) and SoftBank Corp (SOBKY). 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.

	NTTYY	SOBKY	Difference
Sharpe ratio Return per unit of total volatility	-0.95	-0.64	-0.31
Sortino ratio Return per unit of downside risk	-1.38	-0.83	-0.55
Omega ratio Gain probability vs. loss probability	0.86	0.91	-0.05
Calmar ratio Return relative to maximum drawdown	-0.97	-0.54	-0.43
Martin ratio Return relative to average drawdown	-1.64	-0.81	-0.83
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NTTYY vs. SOBKY - Sharpe Ratio Comparison

The current NTTYY Sharpe Ratio is -0.95, which is lower than the SOBKY Sharpe Ratio of -0.64. The chart below compares the historical Sharpe Ratios of NTTYY and SOBKY, 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

	NTTYY	SOBKY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.95	-0.64	-0.31
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.11	0.11	-0.21
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.10	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.11	0.14	-0.03

Drawdowns

NTTYY vs. SOBKY - Drawdown Comparison

The maximum NTTYY drawdown since its inception was -63.81%, which is greater than SOBKY's maximum drawdown of -34.52%. Use the drawdown chart below to compare losses from any high point for NTTYY and SOBKY.

Drawdown Indicators

	NTTYY	SOBKY	Difference
Max Drawdown Largest peak-to-trough decline	-63.81%	-34.52%	-29.29%
Max Drawdown (1Y) Largest decline over 1 year	-17.29%	-21.06%	+3.77%
Max Drawdown (3Y) Largest decline over 3 years	-29.20%	-21.06%	-8.14%
Max Drawdown (5Y) Largest decline over 5 years	-29.20%	-34.52%	+5.32%
Max Drawdown (10Y) Largest decline over 10 years	-29.57%	—	—
Current Drawdown Current decline from peak	-25.91%	-18.36%	-7.55%
Average Drawdown Average peak-to-trough decline	-23.02%	-13.98%	-9.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.24%	14.09%	-3.85%

Volatility

NTTYY vs. SOBKY - Volatility Comparison

The current volatility for Nippon Telegraph and Telephone Corp ADR (NTTYY) is 4.84%, while SoftBank Corp (SOBKY) has a volatility of 6.74%. This indicates that NTTYY experiences smaller price fluctuations and is considered to be less risky than SOBKY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NTTYY	SOBKY	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.84%	6.74%	-1.90%
Volatility (6M) Calculated over the trailing 6-month period	12.21%	12.64%	-0.43%
Volatility (1Y) Calculated over the trailing 1-year period	16.95%	18.75%	-1.80%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.16%	18.42%	-0.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.32%	21.29%	-0.97%

Dividends

NTTYY vs. SOBKY - Dividend Comparison

Neither NTTYY nor SOBKY has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NTTYY Nippon Telegraph and Telephone Corp ADR	0.00%	1.77%	1.73%	0.00%	0.00%	1.83%	0.00%	1.71%	3.52%	2.53%	2.63%	1.94%
SOBKY SoftBank Corp	0.00%	2.19%	2.27%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

NTTYY vs. SOBKY - Profitability Comparison

The chart below illustrates the profitability comparison between Nippon Telegraph and Telephone Corp ADR and SoftBank Corp over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

NTTYY - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Nippon Telegraph and Telephone Corp ADR reported a gross profit of 559.59B and revenue of 4.06T. Therefore, the gross margin over that period was 13.8%.

SOBKY - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, SoftBank Corp reported a gross profit of 851.84B and revenue of 1.88T. Therefore, the gross margin over that period was 45.4%.

NTTYY - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Nippon Telegraph and Telephone Corp ADR reported an operating income of 387.88B and revenue of 4.06T, resulting in an operating margin of 9.6%.

SOBKY - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, SoftBank Corp reported an operating income of 171.35B and revenue of 1.88T, resulting in an operating margin of 9.1%.

NTTYY - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Nippon Telegraph and Telephone Corp ADR reported a net income of 113.01B and revenue of 4.06T, resulting in a net margin of 2.8%.

SOBKY - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, SoftBank Corp reported a net income of 66.43B and revenue of 1.88T, resulting in a net margin of 3.5%.

Frequently Asked Questions

Can I hold both NTTYY and SOBKY in my portfolio?

NTTYY and SOBKY have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NTTYY or SOBKY?

SOBKY has higher volatility (6.74%) compared to NTTYY (4.84%). In terms of maximum drawdown, NTTYY dropped -63.81% vs SOBKY's -34.52%.

Which has better risk-adjusted returns?

SOBKY currently has the higher Sharpe Ratio (-0.64 vs -0.95), 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.