October was rough again for growth shares: after the July wobble, many names gave back 20, 30, even 50 percent in a matter of weeks. CNBC data frames it well; with the 10-year rate above 5 percent, the sale spread across every theme I follow, from orbital to power electronics. It felt like a bazaar where everyone rushes for the same exit at once.
My first question never changes: are prices falling because the businesses got worse, or because the price buyers will pay for future earnings just changed? Those are two different drawdowns and I treat them differently. Contracts keep getting signed, output milestones keep landing, revenue keeps re-accelerating, yet quotes melt. That tells me the trouble sits in the tag, not in the work.
The mechanism is simple: when you buy a growth share, you prepay earnings dated 2028 or 2030. Once the risk-free rate climbs from near 4 toward 5 percent and beyond, those distant earnings shrink in present money. The TradingEconomics curve shows the climb clearly; the gauge sat at 4.14 percent a year ago and swung between 3.92 and 5.37 percent across the last 52 weeks. A distant promise simply weighs less today, so the market cuts the tag.
That backdrop splits the field: giants that print cash from existing engines carry high rates with ease, while smaller outfits that fund expansion from outside meet impatience. So indexes hover near records while many shares in my basket sit 40 to 50 percent underwater. The board looks calm from far away and stormy up close; my risk gauges stay silent on the index and shout on the basket.
So why buy into this weather? Big wins usually come from owning secular winners before every doubt is resolved, and that means living through violent re-ratings. I never chase every red screen; I add in stages only where the story strengthens while the quote softens. Blowing all reserves on the first 15 percent drop is not my process. With the fear gauge near 17 I nibble calmly; past 25 or 30 I would press harder.
In orbital names I lean on two positions. On the RocketLabCorp side the story outgrew small launch into full satellite systems, with Neutron opening the door to larger missions; the value buyers assign still lags that growth, in my view. For phone-to-satellite links, the AST Science plan points to intermittent service opening through 2026 toward continuous coverage by year-end, with 45 to 60 craft slated for orbit. Even a thin slice of that connectivity layer would reprice the share; and state plus carrier appetite hardly moves with the rate.
My favorite theme may be machine electricity: the bottleneck shifts from finding accelerators to feeding them power, as watts per rack multiply and rejected heat grows costly. On the Vertiv side the picture is strong, with a disclosed $15B order backlog and a liquid-cooling push telling the demand story. In conversion, the PowerElectronicsNews record points to 800-volt distribution running gallium-nitride stages at 97 to 98.5 percent efficiency. When rates hit the whole basket, I get a discount; the problem itself keeps growing with every rack design.
Intelligence now steps out of the warehouse into cars, robots, and drones; I call it embodied smarts. Rather than bet which humanoid wins, I hold the eyes and the battery: on the Aeva side, 4D sensing reads position and speed together, with a windshield-integrated version shown at CES 2026. On the battery side, Ambiq passed 290 million devices shipped on ultra-low power, taking the Embedded World 2026 prize with heliaAOT. For minds at the edge, work per watt means everything.
The last basket is self-directed defense: cheap, spread-out systems that keep working when positioning signals and links drop. The MilitaryEmbedded record shows rugged edge processors at SOF Week 2026 moving into platforms like the P-8A; without gear that survives shake and heat, edge smarts stall. As the drone market runs from $36B toward $96B, shares that supply the brain layer and munition electronics earn their slot in my portfolio.
To wrap up: October stank, a second wave on top of July. But I treat discount stretches as upgrades for basket quality; where the work strengthens and the quote weakens, I gather in stages. No rush, the fear gauge is calm, dry powder stays ready. The most important portfolio calls usually get made in stretches like this; that is what I am doing.
Key moments
AI commentary
"Here I lay out what sits behind the October sale and how I play it: the rate-discount mechanism, the small-versus-giant split, and staged-buying discipline. Plain words, small analogies, first person throughout."
AI assessment
My read is this: when the work holds direction while tags fall, that is a discount stretch; pressure lasts while the rate stays above 5 percent, yet every rack design and every signed deal grows the opportunity, not the problem. So I stay staged while the fear gauge rests, and press harder if it spikes.
The other side deserves respect too: if rates climb further I bought early and cash burns; but waiting until everyone agrees hands the premium back. So I run a process, not a single call; dry powder covers my misses.
Sources
10 links; 1 of them also cited by 1 other story. Stories sharing a link do not confirm each other; a source's origin is not inferred from how often it is cited.
- @youtube.com YouTube — Futurum Equities
- @cnbc.com CNBC: U.S. 10 Year Treasury quote
- @tradingeconomics.com TradingEconomics: U.S. 10 Year Note Yield
Also cited by: Tom Lee Sees the Market as a Loaded Spring That Three Triggers Could Release
- @rocketlabcorp.com RocketLabCorp: Neutron reusable medium-lift vehicle
- @ast-science.com AST Science: direct-to-device broadband network
- @investors.vertiv.com Vertiv: powering up for AI data center design
- @powerelectronicsnews.com PowerElectronicsNews: Navitas AI data center power at PCIM 2026
- @investors.aeva.com Aeva: windshield-integrated 4D lidar showcase
- @ambiq.com Ambiq: Embedded World 2026 award for heliaAOT
- @militaryembedded.com MilitaryEmbedded: rugged computing and edge sensors at SOF Week
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