X CEO Linda Yaccarino says the company is 'keeping an eye on everything' that rival Threads is doing

• Linda Yaccarino told CNBC "we're keeping an eye on everything" Threads is doing.
• Meta's rival app quickly amassed 100 million signups but its popularity has waned.
• "You can never ever take your eye off any competition," the X CEO said, as Threads unveils more features.

Linda Yaccarino, the CEO of X — the company formerly known as Twitter — told CNBC on Thursday "we're keeping an eye on everything" Threads is doing.