KUALA LUMPUR: Emerging supply constraints and a moderating growth momentum have prompted AmInvestment Bank to downgrade ViTrox Corporation Bhd to "Hold" from "Buy", despite the company registering 173 per cent surge in core profit in the first nine months.

Despite the strong financial showing, AmInvestment analyst Paul Yap Ee Xing highlighted that growth momentum is expected to moderate as the company faces a high base effect.

The group's book-to-bill ratio has already eased from 1.5 times in the previous quarter to 1.1 times.

Management has guided fourth-quarter revenue to land between RM403 million and RM459 million. Its automated board inspection (ABI) backlog stands at a healthy RM399 million, offering revenue visibility into the first half of 2027.