RMBS
Rambus Inc.

Rambus Inc.RMBS

Technology · Semiconductors
74.53USD
+6.96%
Nov 08, 2026
RMBS overview ready
Specialized Memory Interface Chipsets and Silicon IP for AI Servers
Rambus supplies specialized memory-interface chipsets and silicon IP used to raise the speed, reliability and efficiency of server memory modules and AI-oriented compute designs.
Primary theme is lagging
Memory Semiconductors is lagging (-29.1pp vs SPY over 21 sessions; 0 of 6 members ahead of SPY).
Price trend is broken
Longer-term context reads trend under pressure, with a near-term setup of failed reclaim.
The tactical setup reads failed reclaim, but the weekly structure is broken.
Demanding valuation
The price embeds expectations that run ahead of the durability its demand has shown.
Unremarkable fundamentals
Primary risk
Dependence on semiconductor industry capital spending cycles.
Market Nov 6Filing Sep 30Price action Nov 7Research Oct 10

Conviction Level

PriceAction5.4BusinessPerformance9.0BusinessQuality7.9Valuation3.1ThemeMomentum1.0Accelerating — Revenue growth has accelerated across 3 consecutive quarters, rising from +8.1% to +22% year over year. Diluted EPS growth has strengthened to +57% year over year ($0.69), up from -1.8%. — Accelerating describes growth momentum measured in recent filed quarters. It is not proof that the acceleration will continue.

Conviction uses Price Action, Business Performance, Business Quality, Valuation. Theme Momentum is research context, not an input.

Theme momentumPrimary theme · group context, not entry timing
vs SPY
−29.1pp
Theme return
−34.1%
Beating SPY
0 of 6
21 sessions to Nov 6, 2026 · Theme Leadership V2
Price
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Price Action

Price trend is broken
Longer-term context reads trend under pressure, with a near-term setup of failed reclaim.
The tactical setup reads failed reclaim, but the weekly structure is broken.
EntryConstructive

Structure is constructive on both timeframes without excessive extension — a reasonable entry location.

Key Financials

Market Cap
$8.0B
Avg Volume (60D)
2.3M
60 sessions
Revenue Growth YoY
+27.1%
FY2025 vs FY2024
Gross Margin
+79.1%
Trailing twelve months
Operating Margin
+36.3%
Trailing twelve months
Free Cash Flow Yield
+3.9%
Distance from 200DMA
-30.5%
P/E
30.0x
Market metrics as of Nov 6, 2026
Financial results for the period ended Sep 30, 2026
Filed balance-sheet data as of Sep 30, 2026

Business Performance

Accelerating

Revenue growth has accelerated across 3 consecutive quarters, rising from +8.1% to +22% year over year. Diluted EPS growth has strengthened to +57% year over year ($0.69), up from -1.8%.

Latest reported: Q3 FY2026, ended Sep 30
Revenue growthAccelerating
+22%
$218M in Q3 FY2026 · YoY
YoY growth, last 4 quarters
  1. +18%
  2. +8.1%
  3. +20%
  4. +22%
Earnings growthAccelerating
+57%
Diluted EPS $0.69 vs $0.44 a year earlier · GAAP
Diluted EPS YoY (GAAP), last 4 quarters
  1. n/a
  2. -1.8%
  3. +15%
  4. +57%
Operating marginStable
38.3%
+2.9 pp YoY · gross margin 78.3% (-1.2 pp)

Business Quality

7.9 / 10

How well the business earns on its assets, converts earnings to cash and funds itself — read from its SEC filings.

Fundamentals & Valuation

One of the two valuation perspectives says expensive; peers is the dissenting view.
Rambus Inc. has an Expensive valuation stance because the price embeds expectations that run ahead of the durability its demand has shown. It trades at a 3.9% free-cash-flow yield, which requires sustained delivery to be justified.

What changed

  • Price structure deteriorated
    RMBS: behavior moved from constructive pullback to damaged structure, and weekly structure moved from uptrend to downtrend.
    2026-10-18

Company Research

Thesis
Rambus supplies specialized memory-interface chipsets and silicon IP used to raise the speed, reliability and efficiency of server memory modules and AI-oriented compute designs. The exposure is adjacent rather than pure-play: the company sells into the same demand, alongside a broader business.
Opportunity
High opportunity
AI and high-performance server deployments require faster, higher-capacity, more power-efficient main-memory subsystems, increasing demand for DDR5 RDIMM/MRDIMM, LPDDR-based server modules and the interface logic that enables them.
Key risk
Dependence on semiconductor industry capital spending cycles.

Economic classification

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Business & Markets

Technology · Semiconductors
What they do

Rambus Inc. designs, manufactures, and sells semiconductor products and silicon IP globally, focusing on memory interface chips and security solutions that enhance data movement and protection in computing systems.

How it earns

The company generates revenue primarily through product sales and licensing of silicon IP.

Products & services
DDR5 memory interface chips
DDR4 memory interface chips
Silicon IP for interface and security
Power management integrated circuits
Serial presence detect hubs
Temperature sensors
Client clock driver products
Customers & end markets
Server and data center equipment manufacturers
Semiconductor companies
Technology firms focused on AI and high-performance computing
Market position

Niche supplier specializing in memory interface chipsets and silicon IP for advanced computing applications.

Demand drivers
Medium cyclicality

Demand is influenced by the semiconductor industry cycle and capital spending in data centers and AI infrastructure.