Microchip Technology, the Chandler, Arizona maker of microcontrollers and analog parts that go into cars, factory equipment and industrial gear, spent two years working off an inventory glut that left its own wafer fabs badly underused. The June quarter suggests the dig-out is largely done. Revenue reached $1.48bn, up 38% from a year earlier. Operating margin came in at 22.7%, against 3.0% in the same quarter of 2025.

The shares closed at $76.08 on 21 August, 26% below their $102.92 peak of 6 May.

The recovery is visible in the factories

Gross margin has now expanded for five consecutive quarters — 53.6%, 55.9%, 59.6%, 61.0%, 63.2% — a 970 basis point climb off the trough. The June quarter still absorbed $38.5m of charges for unused factory capacity, a figure management expects to shrink by about $8m in the current quarter. Days of inventory fell to 175 from 185 in March, still above the company's 130-150 target but moving the right way. Distributor stock sits at 25 days, the low end of its historical range, and sell-through through distribution rose 17% sequentially.

Management guided September sales up 8% sequentially, with non-GAAP gross margin of 66-67% and operating margin approaching 39%. Broad price increases took effect in mid-August; the full benefit lands in the December quarter.

What the data center actually buys

Microchip disclosed roughly $591m of data-center revenue in calendar 2025 — 14% of sales — and expects that to approach $1bn this year. Its dedicated Data Center Solutions unit did $302.7m of that and is guided to about $500m in 2026. June-quarter data-center sales nearly doubled year over year.

Worth knowing what those dollars are. Of 14 disclosed design wins as of 6 August, 12 are for a Peripheral Component Interconnect Express (PCIe) Gen6 switch and two for a Gen6 retimer — parts that move data between processors and accelerators. The Compute Express Link (CXL) memory-pooling controllers that give this corner of the market its name are in the portfolio but are not what is winning sockets. Astera Labs, whose Leo controllers went into Microsoft's Azure M-series servers, and Marvell, which paid about $540m for switch designer XConn in February, hold that ground. Microchip's own management said it cannot quantify whether it is gaining or losing share in data center, given the breadth of the catalog.

The constraint on this recovery is not the P&L. Net debt stands at $5.2bn, or 2.85x EBITDA, a level management calls uncomfortable. Every discretionary dollar goes to paying it down; there are no buybacks or dividend increases planned.

Rambus: the same shortage, the opposite sign

Rambus, the San Jose company that sells the register clock driver chipsets sitting on every server memory module and licenses memory-interface patents, also just set a record. Revenue rose 20.4% to $207.4m, with product revenue of $99.2m and gross margin of 79.8%. The shares are 46.5% below their 3 June high of $170.66.

Here the business does not obviously support the rest of the story. Rambus earns a chipset per module shipped, not a fee per gigabyte priced. Server DDR5 contract prices rose 57.3% and then 49.7% sequentially in the first two quarters of 2026, but total module bit supply is expected to grow only 15-20% because high-bandwidth memory for AI accelerators is absorbing fab and packaging capacity. Baird's Tristan Gerra cut the stock to Neutral on exactly that math, calling Rambus "the classic case of a unit-driven top-line impacted at times of severe memory shortages without the benefit of higher pricing", and modeling module unit growth decelerating from about 20% this year to 12-15% next. Management's September guidance points the same way: product revenue steps up to $110-116m, while royalties fall to $69-75m from $84.2m. Consensus still models 20% revenue growth in 2027.

Two neighbors round out the picture and belong to different arguments. Everspin, an $401m maker of magnetoresistive memory for industrial and aerospace customers, grew revenue 42% to a record $18.7m but lost $4.4m at the operating line; its data-center exposure is a demonstration planned for a September storage-industry conference and a memorandum of understanding with MaxLinear, carrying no revenue. Its 61% fall from May is earned. Allegro MicroSystems, which sells magnetic position sensors to carmakers and has no memory-interface business at all, dropped 11% on 18 August — the session the 30-year Treasury yield touched 5.33%, a 19-year high, and the Philadelphia Semiconductor Index fell 4.98%.

What the price now assumes

Gross profit is the fair yardstick across a pair earning 63.2% and 79.8% margins; Microchip's 105x trailing price-to-earnings is trough arithmetic, not information. On that basis Microchip trades at 13.4x trailing gross profit and 10.7x forward, against 20.1x in early May — a third less, while trailing gross profit grew 27.3%. Its forward P/E of 20.9x rests on consensus fiscal-2027 revenue of $6.40bn and earnings of $3.64 a share. Rambus sits at 16.7x trailing gross profit and 15.3x forward, against 20.9x in early May, with trailing gross profit up about 2%.

Over twelve months Micron rose roughly 716% and SanDisk roughly 3,297%. Rambus gained 23.7% and Microchip 10.0%. The memory shortage was repriced almost entirely into the companies that make the memory.

The setup

Where it stands — Microchip's margin recovery is five quarters old and accelerating, while the price paid per dollar of gross profit has fallen a third since May.

Would confirm — September-quarter non-GAAP gross margin printing inside the guided 66-67% range with underutilization charges below $31m.

Would invalidate — Days of inventory rising back above 185, or data-center revenue tracking below the roughly $1bn calendar-2026 path.

Watch next — Microchip's September-quarter results, due early November, and Rambus's third-quarter royalty line against the $69-75m guide.

Valuation — Microchip at 13.4x trailing gross profit and 10.7x forward, versus 20.1x on 3 May; Rambus at 16.7x and 15.3x versus 20.9x.