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NASDAQ · RMBSTechnologySemiconductors

Rambus Inc (RMBS)

$82.90−5.99%
Close Nov 4, 2026 · split-adjusted
Nov 2, 2026$84.01▼ 20.57% in range
Nov 3, 2025Low $79.73 · High $170.66Nov 2, 2026
What changed · written from our data
As of Nov 4, 2026

Rambus closed at $82.90 on Nov 4, down 5.99%, 51.4% below its 52-week closing high. Volume of 1.7M shares was 0.84× its 20-day average (close to normal).

Split-adjusted performance: -27.3% over one month, -36.3% over six months, -21.6% over one year.

In the quarter ended Sep 30, 2026, revenue was $218.29M, up 22.3% from a year earlier, with a net margin of 34.2%.

Short interest was 4.3M shares at the Oct 15 settlement, down 10.4% from the prior report (4.0% of float, 2.9 days to cover).

Market cap$8.88B107.1M shares
Revenue · quarter$218.3M+22.3% YoY
Diluted EPS$0.69+56.8% YoY
P/E · TTM33.4×P/S 11.2×
Net margin34.2%Gross 78.3%
Dividend yieldNone
52-week range79.73 – 170.66−51.4% from high
Volume1.7M0.84× 20-day avg
Volatility · 60d61.8%Annualised
Short % of float4.0%2.9 days to cover
Net cash$776.9MCash $776.9M
Next earnings—Not scheduled
Split-adjusted performance
1W −8.9%1M −27.3%3M −15.1%6M −36.3%YTD −9.8%1Y −21.6%3Y +67.1%5Y +261.5%

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Semiconductors

Percentile among 83 companies (100 = best)

6-month momentum42
Revenue growth46
Net margin87
Value (low P/E)62
Size69

Industry medians: 6-month return −31.2%, revenue growth +24.6%, net margin 8.1%, P/E 46.8×.

Short interest

Details →
Shares short4.3M−10.4% vs prior
Days to cover2.9Settled Oct 15
% of float4.0%
Short vol. 10d38.0%of daily volume

Closest peers by size in Semiconductors

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
RMBSRambus$82.90−5.99%−36.3%+22.3%34.2%33.4$8.88B
AMKRAmkor Technology$35.66−5.21%−53.8%+0.2%9.6%14.3$8.84BCompare
SMTCSemtech$110.96−12.92%−6.9%+32.7%46.8%67.2$10.36BCompare
SLABSilicon Laboratories$222.00−0.15%+2.5%+18.3%−4.6%—$7.41BCompare
VIAVViavi Solutions$29.38−2.23%−44.6%+52.5%7.4%—$7.23BCompare
FORMFormFactor$85.24−11.93%−42.8%+31.9%21.8%57.7$6.66BCompare
SITMSiTime$403.27−9.35%−35.3%+126.5%11.5%860.5$12.13BCompare
ALGMAllegro MicroSystems$31.25−7.16%−39.2%+29.2%8.4%188.4$5.83BCompare
CRUSCirrus Logic$115.99+3.27%−30.8%+12.9%16.7%13.5$5.81BCompare

News about Rambus

All news →
Rambus Q3 Earnings Call Highlights AI Demand and Supply PressuresZacks Investment Research · Oct 27, 2026▲ PositiveRambus: 3 Key Takeaways for Long-Term InvestorsThe Motley Fool · Oct 27, 2026▲ PositiveRMBS Q3 Earnings Beat on Record Product Revenues, AI DemandZacks Investment Research · Oct 27, 2026▲ PositiveRambus (RMBS) Beats Q3 Earnings and Revenue EstimatesZacks Investment Research · Oct 26, 2026NeutralRambus Stock Sinks After Mixed Q1 Earnings ReportBenzinga · Apr 27, 2026▼ Negative

Quick answers

What does Rambus do?
Rambus Inc is a semiconductor company providing chips and silicon IP for data-intensive computing systems, focusing on data center and artificial intelligence (AI) infrastructure. The company is at the forefront of enabling the next era of AI-driven computing, addressing challenges of signal and power integrity at increasingly extreme data rates across the data center, edge, and client markets.
What is RMBS's market cap?
$8.88B, based on the Nov 4 close of $82.90.
What is RMBS's P/E ratio?
33.4× trailing-twelve-month earnings of $265.87M.
Does Rambus pay a dividend?
No regular cash dividend has been paid in the last year.
How much of RMBS is sold short?
4.3M shares, 4.0% of float, as of Oct 15, 2026.
What sector is RMBS in?
Technology, in the Semiconductors industry.

About Rambus

Rambus Inc is a semiconductor company providing chips and silicon IP for data-intensive computing systems, focusing on data center and artificial intelligence (AI) infrastructure. The company is at the forefront of enabling the next era of AI-driven computing, addressing challenges of signal and power integrity at increasingly extreme data rates across the data center, edge, and client markets. It offers high-performance memory subsystems, with a balanced and diverse portfolio of products, IP, and patents that maximize performance and security in computationally intensive systems. The company operates in South Korea, Singapore, the United States, and other countries, with the majority of its revenue coming from South Korea.

HQ: San Jose, CA791 employeesListed May 14, 1997rambus.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology