In early trading, Axon Enterprise leads the S&P 500 with a 13.4% increase, but year to date, it has lost 11.6% of its value. On the flip side, GoDaddy is the worst performer, down 20% for the day and 40.5% year to date. First Solar is down 13.8% and Western Digital is up 7.7% on the day. These shifts are impacting the S&P 500 index.

Read more at Nasdaq: S&P 500 Movers: GDDY, AXON