NASHVILLE — The market closed in the red at TD Garden. The Nashville Predators were blanked 6-0 by the Boston Bruins on Thursday night, sending the team’s early-season portfolio into a tailspin. Nashville had scored 23 goals in its first eight games, suggesting an offense that could keep the books balanced. Instead, the Predators went silent against Michael DiPietro, who stopped all 28 shots he faced and was named the game’s first star. Three wins through nine games isn’t a crash, but it’s a trend worth watching. Here’s how the stocks moved after the final horn.

Stock Down: Defensive Structure and Breakouts

This is where the game was lost. The Predators struggled to get out of their own zone all night, with breakouts that stalled, got picked off, or turned into giveaways. Those mistakes fed Boston’s transition game, and the Bruins repeatedly turned them into odd-man rushes. When Nashville had to defend in its own end, the positioning was poor.…