In the past 12 months (February 24, 2025 to February 24, 2026), ATO returned 24.57% versus 16.44% for the S&P 500 (SPY) and 17.52% for Nasdaq 100 (QQQ).
In the past 5 years (February 25, 2021 to February 24, 2026), ATO returned 133.66% versus 92.58% for the S&P 500 (SPY) and 100.23% for Nasdaq 100 (QQQ). $1 invested in ATO in 2021 became $2.34 in 2026.
In the past 10 years (February 29, 2016 to February 24, 2026), ATO had an annualized return of 12.76% versus 15.41% for the S&P 500 (SPY) and 20.38% for Nasdaq 100 (QQQ). $1 invested in ATO in 2016 became $3.32 in 2026.
Since April 2006 (April 10, 2006 to February 24, 2026) ATO had an annualized return of 13.78% versus 10.76% for the S&P 500 (SPY) and 15.23% for Nasdaq 100 (QQQ). $1 invested in ATO in 2006 became $13.04 in 2026.
Ticker
Company Name
Total Returns
$1 turns into
Annualized Returns
Annualized Volatility
Sharpe Ratio
ATO
Atmos Energy Corporation
1203.87%
$13.04
13.78%
20.93%
0.66
SPY
SPDR S&P 500 ETF Trust
664.15%
$7.64
10.76%
19.44%
0.55
QQQ
Invesco QQQ Trust, Series 1
1575.96%
$16.76
15.23%
22.02%
0.69
Returns adjusted for splits and dividends.
Period start date is the earliest common trading day in the selected time period across all tickers.