$MRVL breaking away from $NVDA's post-earnings momentum and dipping red on volume into its own print tonight. Classic pre-earnings positioning or does the tape know something? Watch for guidance on AI networking and custom silicon—that's where the real signal lives. If they underwhelm on data center outlook or margins compress more than expected, this could get messy fast. Conversely, any beat with strong forward commentary on optical connectivity or merchant silicon could flip sentiment hard. The decoupling from Nvidia's move is the tell here.