Rambus Stock Price and Value Analysis

Rambus (NasdaqGS:RMBS) in our automated value investing analysis, with the cash flow history and price comparison below.

Key Facts

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RMBS Free Cash Flow Trend

Free Cash Flow trendline for RMBS
Free Cash Flow trendline for Rambus
CSV

Based on historical returns, we believe that Rambus can grow its free cash at a rate of about 9%. That's positive!

AdvantagesDisadvantagesNeutral
  • This company is solid.
  • This company is making money at a decent rate.
  • This company has wild ups and downs.
  • This stock looks overpriced.
  • This company pays no dividend.

Inside the RMBS Numbers

RMBS Price
(Rambus stock price per share)
$84.97
[?] RMBS Fair Price
(based on intrinsic value)
$0.72
[?] RMBS Safety Price (based on a variable margin of safety) $0.47
Try your own return

The fair price above uses a 10.1% discount rate, the long-run US stock return (10.1% geometric, 1926 to 2025, from Bessembinder's working paper, updated 2026-11-09), and 2.5% terminal growth. A higher rate suits a higher return target and gives a lower value.

Value per share:

[?] PE Ratio versus Sector 113% higher than other Technology stocks
[?] PE Ratio versus Industry 47% lower than other Semiconductors stocks
[?] Cash Yield -0.67%
[?] Free Cash Flow Jitter 56%

Insider Activity Summary

In the six months to 2026-11-14, no insider bought shares, and 5 insiders sold in 8 trades, about $9.9 million.

The six months before that had 0 buys and 19 sales.

Recent Insider Activity

Open-market buys and sells reported by Rambus's officers, directors, and 10% owners on SEC Form 4. Routine transactions (tax withholding, option exercises, and stock grants) are excluded -- these are discretionary trades only.

Date Insider Type Shares Price
2026-06-03 Sayiner Necip Sell 5,000 $170.15
2026-06-02 Higashi Emiko Sell 5,000 $158.00
2026-06-02 Higashi Emiko Sell 5,000 $163.00
2026-06-01 STANG ERIC B Sell 5,000 $146.00
2026-05-26 FAN XIANZHI SEAN (EVP, COO) Sell 37,814 $151.69
2026-05-26 FAN XIANZHI SEAN (EVP, COO) Sell 100 $152.35
2026-05-26 Higashi Emiko Sell 5,000 $157.57
2026-05-22 Shinn John (SVP, General Counsel) Sell 1,000 $143.63
2026-05-08 Sayiner Necip Sell 9,824 $130.18
2026-05-07 LAUB STEVEN Sell 1,500 $125.52

This stock has short interest! This means that people have shorted it.

Why does that matter? They've made a bet that price will decrease from where they bought it. Maybe there are financial problems, or maybe there's a value play.

As of the latest analysis, there are 4,474,661 shares shorted. With 106,250,998 shares available for purchase and an average trading volume over the past 10 trading days of 1,816,120, it would take at least 2.5 days for all of the short holders to cover their shorts.

Related guides: good annual rate of return · high-yield stocks · forecasting earnings growth

Free Cash Flow by Fiscal Year

Each year names the SEC filer that reported it, so a change of filer shows up here.

Fiscal yearSEC filer (CIK)Free cash flow (USD millions)
2008 917273 -48.3
2009 917273 -46.9
2010 917273 222.1
2011 917273 38.4
2012 917273 -33.6
2013 917273 35.5
2014 917273 60.1
2015 917273 64.9
2016 917273 85.5
2017 917273 109.8
2018 917273 77.8
2019 917273 120.3
2020 917273 172.5
2021 917273 195.2
2022 917273 214.7
2023 917273 177.6
2024 917273 207.6
2025 917273 337.6

Download the yearly data as CSV.

Price Versus Our Estimated Value

Positive free cash flow appears in 15 of the 18 fiscal years we hold for Rambus from its current SEC filer.

Our fair value estimate for Rambus is $0.72, below its current price of $84.97.

Free cash flow from the first three years of data averaged $42.3 million, and from the last three $241.0 million: a sharp rise.

Year-to-year variability in free cash flow is volatile, measured at 56%.

No dividend yield is recorded for Rambus in our data.

These figures are automated calculations from SEC filings and the recent price. They are not a recommendation to buy or sell. See how we estimate value.

Compared With Its Sector and Industry

Its trailing P/E ratio is 113% above the average for stocks in the Technology sector.

Its trailing P/E ratio is 47% below the average for stocks in the Semiconductors industry.

A P/E ratio depends on trailing earnings, which one-time items can distort, so a lower P/E is not by itself evidence of value.

SEC Filer History

Every fiscal year on this page is reported by one SEC filer, CIK 917273.

Each figure on this page comes from that filer.

Risks to This Analysis

  • Free cash flow was negative in 3 of the 18 years we have.
  • Free cash flow is volatile from year to year, so the estimates depend heavily on which years are included.
  • These figures are automated calculations from SEC filings and the recent price. They may contain errors, and they do not reflect lawsuits, management changes, or other events the filings do not show.

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Questions to Answer Before You Invest in RMBS

Does Rambus have a coherent story? Does it have a plan to continue to make money? Is it worth your time? Only you can decide where to go from here. Our investment guide helps you ask the right questions, including how to buy stocks. Use these research links for more information.

Worked example: RMBS

This example shows how we apply the Trendshare checklist to RMBS: earnings power, cash generation, valuation, and margin of safety.

We check: business quality, free cash flow, P/E, and margin of safety.

  1. Step 1 — Snapshot

    • Price: 84.97
    • Market cap: $9.1B
    • EPS: 2.42
  2. Step 2 — Valuation checks

    • P/E: 35.112
    • FCF yield: -0.7%
    • Date checked: Nov 13, 2026
  3. Step 3 — Margin of safety

    • Compare price to fair value and safety price.
    • Look for durable cash generation and reasonable leverage.
    • Decide if it passes your personal checklist.