IBM Stock After Hours Today (Dec. 23, 2025): Confluent Deal Filing, Late Trading Moves, and What to Watch Before the Market Opens Dec. 24
IBM closed at $303.78 on Dec. 23, up 0.33%, then slipped 0.17% to $303.25 in after-hours trading. Confluent filed a preliminary proxy tied to IBM’s planned $31-per-share cash acquisition. The deal requires a Confluent shareholder vote, with 62% of voting power already pledged in support. Confluent could owe IBM a $453.6 million break fee if the merger is terminated under certain conditions.