SK hynix posts 1,200% net profit boost on AI chip boom

South Korea's SK hynix said Wednesday second-quarter net profit soared a whopping 1,242 percent year-on-year, driven by the artificial intelligence industry's explosive demand for its advanced memory chips.

SK hynix is a specialist supplier of high-bandwidth memory chips to US industry behemoth Nvidia, and a pillar of South Korea's tech-led economy.

The global race to build data centres hosting AI infrastructure has seen a meteoric rise in the firm's fortunes, despite concern the sector may be overvalued in a market bubble.

Wednesday's earnings figures, including quarterly net profit of 94 trillion won ($64 billion), were described in a statement by the Icheon-headquartered firm as "an all-time high quarterly performance".

"We are aware of concerns that AI infrastructure investment might be slowing down," marketing chief of the AI microchip division Park Joon-deok said on a call with investors and reporters.

He cited jitters over firms exploring data centre rental -- rather than construction -- and the emergence of new high-efficiency AI requiring a lower memory taskload.

"We view these developments not as a scaling back of AI investment, but rather as a process of maximising the utilisation of the massive AI infrastructure built to date and accelerating its monetisation," he said.

Wednesday's report said operating profit between April and June jumped 557 percent from last year to 60 trillion won.

Revenue stood at 79 trillion won, with the differential to the net profit boosted by SK hynix's one-off sale of its 20 trillion won stake in flash memory maker Kioxia -- another beneficiary of the AI boom.

SK hynix said it intends to make investments in the 40 trillion won range this year.

Growth was attributed to expanding investments in AI infrastructure as the technology evolves into more complex forms requiring more high-bandwidth memory capacity.

"With major tech companies increasing their AI infrastructure investments, additional supply requests continue to mount," the company said in a statement.

"As these investments are supported by revenue generated from AI services, the momentum in memory demand is expected to persist."

Parent firm SK Group announced on Saturday plans for a new $500 billion collaboration with Nvidia to invest in AI infrastructure.

Earlier this month, SK hynix also raised $26.5 billion through an American Depositary Receipt listing in the US, one of the world's largest-ever equity offerings.

Despite aggressive investments, shares of SK hynix and its larger South Korean rival Samsung Electronics have fallen sharply by 33 per cent and 41 per cent respectively over the past month.

SK hynix shares tumbled 14 percent on Tuesday, the day before the earnings release.

The dip has been caused by concerns about AI industry sustainability and conflict in the Middle East spooking investors, KB Securities analyst Kim Dong-won said in a note on Monday.

Nonetheless, Kim forecast memory chip prices are likely to rise "at least 30 percent in the third quarter" with supply shortages likely to persist through to 2028.

Samsung Electronics is due to report its quarterly earnings on Thursday.

The company has forecast second-quarter operating profits to increase 1,800 per cent on last year.