Tuesday's biggest movers: Sea falls 5.7% and Western Digital rises 6.1%

Among US-listed companies worth at least $20 billion, the biggest moves in Tuesday's session (20 October) came from Sea, which fell 5.7%, and Western Digital, which rose 6.1%.

The decliners

Sea (SE) fell 5.7% to $88.47. It was its biggest one-day drop since 19 October, based on the past year of closes. The shares are down 37.0% this year and 51.1% below their 52-week closing high.

Cerebras Systems (CBRS) fell 5.1% to $120.66. It was its biggest one-day drop since 16 October, based on the past year of closes.

NRG Energy (NRG) fell 4.2% to $99.38. It was its biggest one-day drop since 19 October, based on the past year of closes. The shares are down 38.6% this year and 46.8% below their 52-week closing high. Coverage since the move includes Utility Dive's headline “LS Power COO sees sweeping power sector investing needs: gas, renewables, transmission and more”.

Ameriprise Financial (AMP) fell 4.1% to $480.41. It was its biggest one-day drop since 19 October, based on the past year of closes. The shares are down 0.5% this year and 14.5% below their 52-week closing high.

The gainers

Western Digital (WDC) rose 6.1% to $352.21. It was its biggest one-day gain since 19 October, based on the past year of closes. The shares are up 111% this year and 51.2% below their 52-week closing high. Coverage since the move includes Motley Fool's headline “Not Micron. Not Sandisk. This Storage Stock Is Riding the Same AI Infrastructure Wave.”.

Sandisk (SNDK) rose 5.5% to $1,371.12. It was its biggest one-day gain since 22 September, based on the past year of closes. The shares are up 475% this year and 41.5% below their 52-week closing high. Coverage since the move includes Motley Fool's headline “Not Micron. Not Sandisk. This Storage Stock Is Riding the Same AI Infrastructure Wave.”.

Datadog (DDOG) rose 5.4% to $260.36. It was its biggest one-day gain since 9 October, based on the past year of closes. The shares are up 88.6% this year and 12.6% below their 52-week closing high. Coverage since the move includes GuruFocus.com's headline “Datadog Stocks Rise 7.32% as Bernstein's $350 Target Raises the Earnings Stakes”.

Twilio (TWLO) rose 5.3% to $257.29. It was its biggest one-day gain since 19 October, based on the past year of closes. The shares are up 81.8% this year and 14.2% below their 52-week closing high.

The megacaps

Of the 12 most-watched names we track, 3 closed higher. Tesla (TSLA) did best at +1.54%, and Meta (META) worst at -1.59%.