T vs. FSLR

Last updated Jun 13, 2026

T (AT&T Inc.) and FSLR (First Solar, Inc.) are both stocks. T operates in Telecom Services (Communication Services), while FSLR operates in Solar (Technology). Over the past 10 years, T returned 3.33%/yr vs 18.76%/yr for FSLR. At a 0.18 correlation, their price movements are largely independent.

Performance

T vs. FSLR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AT&T Inc. (T) and First Solar, Inc. (FSLR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, T achieves a -2.96% return, which is significantly lower than FSLR's 2.33% return. Over the past 10 years, T has underperformed FSLR with an annualized return of 3.33%, while FSLR has yielded a comparatively higher 18.76% annualized return.

T

• 1D: 2.52%
• 1M: -1.87%
• YTD: -2.96%
• 6M: -1.93%
• 1Y: -12.71%
• 3Y*: 20.58%
• 5Y*: 7.38%
• 10Y*: 3.33%

FSLR

• 1D: -1.42%
• 1M: 14.54%
• YTD: 2.33%
• 6M: 4.91%
• 1Y: 52.57%
• 3Y*: 10.90%
• 5Y*: 27.42%
• 10Y*: 18.76%

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

T vs. FSLR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
T AT&T Inc.	-2.96%	13.97%	44.08%	-2.74%	5.76%	-8.09%	-21.37%	45.55%	-22.25%	-4.01%
FSLR First Solar, Inc.	2.33%	48.22%	2.30%	15.01%	71.86%	-11.89%	76.77%	31.81%	-37.12%	110.41%

Correlation

The correlation between T and FSLR is -0.04, 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	-0.04
Correlation (3Y) Calculated over the trailing 3-year period	0.01
Correlation (5Y) Calculated over the trailing 5-year period	0.06
Correlation (10Y) Calculated over the trailing 10-year period	0.11
Correlation (All Time) Calculated using the full available price history since Nov 17, 2006	0.18

The correlation between T and FSLR shifts across timeframes, from -0.04 (1 year) to 0.18 (all time), reflecting how their relationship changes across market environments.

Fundamentals

EPS T : $3.04 FSLR : $15.48
PE Ratio T : 7.74 FSLR : 17.27
PEG Ratio T : 0.32 FSLR : 0.41
PS Ratio T : 1.35 FSLR : 5.31
Total Revenue (TTM) T : $125.65B FSLR : $5.42B
Gross Profit (TTM) T : $105.41B FSLR : $2.26B
EBITDA (TTM) T : $54.70B FSLR : $2.15B

Return for Risk

T vs. FSLR — Risk / Return Rank

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

T

T Risk / Return Rank: 18
T Sharpe Ratio Rank: 17
T Sortino Ratio Rank: 17
T Omega Ratio Rank: 18
T Calmar Ratio Rank: 21
T Martin Ratio Rank: 15

FSLR

FSLR Risk / Return Rank: 72
FSLR Sharpe Ratio Rank: 74
FSLR Sortino Ratio Rank: 70
FSLR Omega Ratio Rank: 72
FSLR Calmar Ratio Rank: 74
FSLR Martin Ratio Rank: 71

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.

T vs. FSLR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AT&T Inc. (T) and First Solar, Inc. (FSLR). 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.

	T	FSLR	Difference
Sharpe ratio: Return per unit of total volatility	-0.59	1.02	-1.61
Sortino ratio: Return per unit of downside risk	-0.72	1.63	-2.35
Omega ratio: Gain probability vs. loss probability	0.92	1.22	-0.31
Calmar ratio: Return relative to maximum drawdown	-0.59	1.70	-2.29
Martin ratio: Return relative to average drawdown	-1.22	3.57	-4.79

T vs. FSLR - Sharpe Ratio Comparison

The current T Sharpe Ratio is -0.59, which is lower than the FSLR Sharpe Ratio of 1.02. The chart below compares the historical Sharpe Ratios of T and FSLR, 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

T vs. FSLR - Drawdown Comparison

The maximum T drawdown since its inception was -64.15%, smaller than the maximum FSLR drawdown of -96.22%. Use the drawdown chart below to compare losses from any high point for T and FSLR.

Drawdown Indicators

	T	FSLR	Difference
Max Drawdown Largest peak-to-trough decline	-64.15%	-96.22%	+32.07%
Max Drawdown (1Y) Largest decline over 1 year	-21.87%	-35.10%	+13.23%
Max Drawdown (3Y) Largest decline over 3 years	-21.87%	-59.97%	+38.10%
Max Drawdown (5Y) Largest decline over 5 years	-32.01%	-59.97%	+27.96%
Max Drawdown (10Y) Largest decline over 10 years	-42.35%	-61.26%	+18.91%
Current Drawdown Current decline from peak	-18.12%	-16.01%	-2.11%
Average Drawdown Average peak-to-trough decline	-15.72%	-63.20%	+47.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.64%	16.63%	-5.99%

Volatility

T vs. FSLR - Volatility Comparison

The current volatility for AT&T Inc. (T) is 8.21%, while First Solar, Inc. (FSLR) has a volatility of 23.37%. This indicates that T experiences smaller price fluctuations and is considered to be less risky than FSLR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	T	FSLR	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.21%	23.37%	-15.16%
Volatility (6M) Calculated over the trailing 6-month period	17.80%	41.98%	-24.18%
Volatility (1Y) Calculated over the trailing 1-year period	22.13%	58.23%	-36.10%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.01%	54.07%	-30.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.73%	50.84%	-27.11%

Dividends

T vs. FSLR - Dividend Comparison

T's dividend yield for the trailing twelve months is around 4.71%, while FSLR has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSLR First Solar, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
T AT&T Inc.	4.71%	4.47%	4.87%	6.62%	6.66%	8.46%	7.23%	5.22%	7.01%	5.04%	4.51%	5.46%

Financials

Frequently Asked Questions

Can I hold both T and FSLR in my portfolio?

T and FSLR have a correlation of -0.04, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, T or FSLR?

FSLR has higher volatility (23.37%) compared to T (8.21%). In terms of maximum drawdown, T dropped -64.15% vs FSLR's -96.22%.

Which has better risk-adjusted returns?

FSLR currently has the higher Sharpe Ratio (1.02 vs -0.59), 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.