Accelerating PD orders raise full-year growth outlook
- Management raised full-year 2026 organic revenue growth guidance to 10 to 12 percent following a strong second quarter.
- Precision Devices is the main growth engine, posting a 1.4 book-to-bill ratio and 25 percent revenue growth in Q2 2026.
- Defense customers are securing multi-year capacity, including a new $15 million radar order set to start shipping in 2027.
- The specialty film energy ramp delivered over $5 million in Q2 with better yields, supporting expected second-half margin expansion.
- Medtech & Specialty Audio revenue grew 2 percent in Q2, returning to its historical 2 percent to 4 percent growth range.
A faster PD story
Knowles is building significant momentum in its industrial technology shift. The company focuses on medtech, defense, industrial, and electrification markets. Customers in those spaces need custom parts that are hard to swap out.
The best news is in Precision Devices, or PD. In Q2 2026, PD revenue reached $98 million, up 25 percent from last year. Its book-to-bill ratio hit a massive 1.4, meaning new orders were 40 percent higher than shipments during the quarter. Defense customers are now placing multi-year orders to secure capacity, improving long-term visibility.
The bull case relies on pricing power and higher factory use to drive PD gross margins into the low 40 percent range in the second half of 2026. The energy order ramp delivered over $5 million in Q2 with better-than-planned yields, keeping this margin expansion on track.
The bear case notes that MSA growth is slowing back to the 2 percent to 4 percent range, which limits total company revenue upside. The current score mix also leaves room for debate on valuation, so the stock still needs the strong PD growth and margin story to offset the modest MSA segment.
Custom parts, premium niches
Knowles makes small, high-value components that go inside other companies' products. Its customers are large device, medical, defense, industrial, and energy companies. Knowles wins when it designs parts that meet tight specs, then produces them at scale.
The company reports two segments. Medtech & Specialty Audio, or MSA, sells parts used in hearing health and specialized audio products, including components for AI-focused medical devices. Precision Devices, or PD, sells high-performance capacitors, RF filters, and specialty film products used in markets like defense, industrial, EV, energy, and downhole fracking.
This model can earn premium margins because the parts are important, technical, and often designed into a customer's product for a long time. It can break if a customer redesigns around a Knowles part, if China buyers shift to local suppliers, or if tariffs raise input costs faster than Knowles can raise prices.
What Knowles sells
Hearing health components
These parts support hearing aids and related hearing health devices. Growth has returned to the historical 2 percent to 4 percent range.
AI medical device audio parts
Knowles supplies components for AI-optimized medical devices. This gives MSA a path beyond traditional hearing health, but it remains an emerging option.
High-performance capacitors
These PD products serve defense, industrial, medtech, and electrification uses. Broad-based order strength is driving a massive book-to-bill ratio.
RF filtering solutions
RF filters help electronic systems manage signals. In PD, higher factory use in ceramic capacitors and RF microwave products supports margin improvement.
Specialty film
This is a crucial near-term product line. The specialty film ramp for energy, downhole fracking, and EV markets delivered over $5 million in Q2 2026.
Syntiant supply agreement products
Knowles still sells some specialty audio products tied to the Syntiant transaction. These sales can carry lower margins than the rest of MSA.
Q2 2026 mix
Segment mix is based on Q2 2026 revenue with PD at $98 million and MSA at $69 million. PD is the larger segment and the primary swing factor for growth and margins.
What could go wrong
MSA growth fades
Medium impact · Medium oddsMSA revenue was $69.0 million in Q2 2026, up 2 percent from last year. Management expects this segment to stay in the 2 percent to 4 percent historical growth range. If that slowdown deepens while PD has any hiccup, total company growth will suffer.
Tariffs raise costs
Medium impact · Medium oddsKnowles disclosed a new temporary 10 percent global tariff under Section 122 of the Trade Act of 1974. While the company pursued refunds tied to past IEEPA duties, recent filings confirmed those cash refunds were not material. The open question is whether new tariff costs outrun any pricing power.
China localization pressure
Medium impact · High oddsKnowles says China's policy of reducing dependence on foreign manufacturers has hurt PD revenue and may keep hurting it. This is a named pressure point in the segment that carries the growth story.
Specialty film ramp misses
High impact · Medium oddsThe bull case expects higher factory use and pricing power to lift PD gross margins into the low 40 percent range in the second half of 2026. If yields on new specialty film orders drop or customer timing slips, the margin story weakens fast.
Syntiant exposure disappoints
Medium impact · Medium oddsKnowles has post-divestiture exposure through $77.2 million in Syntiant preferred stock. It also sells some lower-margin specialty audio products to Syntiant under a supply agreement. If Syntiant underperforms, Knowles could face weaker value from the stake.
In one breath
What does Knowles Corporation do?
Knowles makes small electronic components used in hearing devices, medical products, defense systems, industrial equipment, EVs, and energy applications. Its two segments are Medtech & Specialty Audio and Precision Devices.
Why is Precision Devices important to Knowles?
Precision Devices is the larger segment and main growth engine. In Q2 2026, PD revenue grew 25 percent and posted a massive 1.4 book-to-bill ratio, meaning orders far outpaced shipments.
What is the biggest catalyst for KN stock?
The biggest catalyst is the margin expansion in the Precision Devices segment. Strong pricing power and higher factory use are expected to drive PD gross margins into the low 40 percent range in the second half of 2026.
What is the main risk for Knowles?
The main risks are slower growth in the Medtech & Specialty Audio segment, China localization pressures on Precision Devices, and global tariff changes.
