Tuesday's biggest movers: United Microelectronics Corporation (NEW) sinks 8.9% and PTC jumps 33.5%

Among US-listed companies worth at least $20 billion, the biggest moves in Tuesday's session (6 October) came from United Microelectronics Corporation (NEW), which fell 8.9%, and PTC, which rose 33.5%.

The decliners

United Microelectronics Corporation (NEW) (UMC) fell 8.9% to $23.92. It was its biggest one-day drop since 28 July, based on the past year of closes. The shares are up 195% this year and 17.3% below their 52-week closing high.

Insmed (INSM) fell 6.6% to $103.83. It was its biggest one-day drop since 5 October, based on the past year of closes. The shares are down 39.5% this year and 50.2% below their 52-week closing high. Coverage since the move includes Zacks's headline “INSM Stock Slides on CFO Exit, Reiterates '26 Sales View”.

Chipotle Mexican Grill (CMG) fell 4.7% to $30.85. It was its biggest one-day drop since 5 October, based on the past year of closes. The shares are down 16.5% this year and 27.0% below their 52-week closing high. Coverage since the move includes StockStory's headline “2 Reasons to Like CMG (and 1 Not So Much)”.

Nebius (NBIS) fell 4.2% to $232.57. It was its biggest one-day drop since 5 October, based on the past year of closes. The shares are up 198% this year and 12.8% below their 52-week closing high.

The gainers

PTC (PTC) rose 33.5% to $192.26. It was its biggest one-day gain since 5 October, based on the past year of closes. The shares are up 10.8% this year and 6.3% below their 52-week closing high. Coverage since the move includes The Fly's headline “Nike downgraded, Home Depot initiated: Wall Street's top analyst calls”.

Banco Bradesco Sa (BBDO) rose 19.0% to $3.76. It was its biggest one-day gain since 5 October, based on the past year of closes. The shares are up 40.4% this year and at their 52-week closing high.

Banco Bradesco Sa (BBD) rose 18.6% to $4.33. It was its biggest one-day gain since 5 October, based on the past year of closes. The shares are up 35.4% this year and at their 52-week closing high.

Companhia de saneamento Basico Do Estado De Sao Paulo - Sabesp (SBS) rose 16.4% to $6.26. It was its biggest one-day gain in the past year, based on the past year of closes. The shares are up 34.6% this year and 9.3% below their 52-week closing high.

The megacaps

Of the 12 most-watched names we track, 10 closed higher. Broadcom (AVGO) did best at +3.67%, and Micron (MU) worst at -1.73%.