ACM Research's fiscal second quarter is the rare report where the operating story and the accounting story point in opposite directions, and reading the wrong one misprices the whole company. Operationally, it was a strong quarter: revenue rose 36% to $292.9 million, shipments rose 36.4%, the mix kept shifting toward the higher-growth ECP and advanced-packaging lines, and management raised its full-year revenue guidance for the second time. The headline GAAP number, however, was dominated by a $69.6 million unrealized gain on the publicly traded Shanghai holdings inside ACM's principal operating subsidiary, ACM Shanghai - a mark-to-market kicker from one of the strongest Chinese equity rallies in years that is not a semiconductor-operations profit at all. Strip stock compensation and that investment gain out, as management does, and the clean quarterly profit was $44.5 million, or $0.61 a diluted share - 19% growth in net income but only 11% growth per diluted share, against a 36% revenue increase.
That gap - revenue up a third, core earnings per share up a tenth - is the quarter's central tension. The engines that drove the top line (electroplating and advanced packaging) are real and scaling; the company shipped its 2,000th ECP chamber and booked first production orders for the new panel-level plating line. But the multiple of growth that reaches the bottom line compressed: gross margin fell to 46.0% from 48.5%, operating expenses grew faster than the non-GAAP profit base, the share count rose roughly 7% on a May equity offering at $52.00 a share, and a swing in foreign-exchange on working capital added a $9.8 million loss line. Meanwhile cash flow from operations was negative $35.9 million for the half - a six-month period that ended with $1.0 billion of net cash, but only because financing, not operations, supplied the cash. Investors at roughly $79.92 are buying a China-heavy wafer-cleaning compounder whose growth is real, whose profits are partly borrowed from Shanghai's bull market, and whose balance sheet is being padded by its own shareholders and its subsidiary's planned Hong Kong listing.