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Side-by-side financial comparison of Riley Exploration Permian, Inc. (REPX) and RAMBUS INC (RMBS). Click either name above to swap in a different company.

RAMBUS INC is the larger business by last-quarter revenue ($180.2M vs $97.3M, roughly 1.9× Riley Exploration Permian, Inc.). On growth, RAMBUS INC posted the faster year-over-year revenue change (8.1% vs -5.3%). Over the past eight quarters, RAMBUS INC's revenue compounded faster (16.8% CAGR vs -1.2%).

Riley Exploration Permian, Inc. is an independent energy company focused on exploration, development, and production of crude oil, natural gas, and natural gas liquids primarily in the US Permian Basin spanning Texas and New Mexico. It prioritizes cost-efficient onshore reserve development to supply reliable energy products to North American markets.

Rambus Inc. is an American technology company that designs, develops and licenses chip interface technologies and architectures that are used in digital electronics products. The company, founded in 1990, is well known for inventing RDRAM and for its intellectual property-based litigation following the introduction of DDR-SDRAM memory.

REPX vs RMBS — Head-to-Head

Bigger by revenue
RMBS
RMBS
1.9× larger
RMBS
$180.2M
$97.3M
REPX
Growing faster (revenue YoY)
RMBS
RMBS
+13.4% gap
RMBS
8.1%
-5.3%
REPX
Faster 2-yr revenue CAGR
RMBS
RMBS
Annualised
RMBS
16.8%
-1.2%
REPX

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
REPX
REPX
RMBS
RMBS
Revenue
$97.3M
$180.2M
Net Profit
$59.9M
Gross Margin
79.7%
Operating Margin
26.9%
34.3%
Net Margin
33.2%
Revenue YoY
-5.3%
8.1%
Net Profit YoY
-7.3%
EPS (diluted)
$4.02
$0.55

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
REPX
REPX
RMBS
RMBS
Q1 26
$180.2M
Q4 25
$97.3M
$190.2M
Q3 25
$106.9M
$178.5M
Q2 25
$85.4M
$172.2M
Q1 25
$102.5M
$166.7M
Q4 24
$102.7M
$161.1M
Q3 24
$102.3M
$145.5M
Q2 24
$105.4M
$132.1M
Net Profit
REPX
REPX
RMBS
RMBS
Q1 26
$59.9M
Q4 25
$63.8M
Q3 25
$16.3M
$48.4M
Q2 25
$30.5M
$57.9M
Q1 25
$28.6M
$60.3M
Q4 24
$62.2M
Q3 24
$25.7M
$48.7M
Q2 24
$33.5M
$36.1M
Gross Margin
REPX
REPX
RMBS
RMBS
Q1 26
79.7%
Q4 25
78.9%
Q3 25
79.5%
Q2 25
79.8%
Q1 25
80.3%
Q4 24
80.4%
Q3 24
80.7%
Q2 24
79.7%
Operating Margin
REPX
REPX
RMBS
RMBS
Q1 26
34.3%
Q4 25
26.9%
37.2%
Q3 25
27.0%
35.4%
Q2 25
33.7%
36.6%
Q1 25
48.3%
37.9%
Q4 24
31.2%
35.9%
Q3 24
17.1%
37.6%
Q2 24
50.9%
30.5%
Net Margin
REPX
REPX
RMBS
RMBS
Q1 26
33.2%
Q4 25
33.6%
Q3 25
15.3%
27.1%
Q2 25
35.7%
33.6%
Q1 25
27.9%
36.2%
Q4 24
38.6%
Q3 24
25.1%
33.4%
Q2 24
31.8%
27.3%
EPS (diluted)
REPX
REPX
RMBS
RMBS
Q1 26
$0.55
Q4 25
$4.02
$0.58
Q3 25
$0.77
$0.44
Q2 25
$1.44
$0.53
Q1 25
$1.36
$0.56
Q4 24
$0.52
$0.57
Q3 24
$1.21
$0.45
Q2 24
$1.59
$0.33

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
REPX
REPX
RMBS
RMBS
Cash + ST InvestmentsLiquidity on hand
$134.3M
Total DebtLower is stronger
$247.9M
Stockholders' EquityBook value
$634.2M
Total Assets
$1.2B
$1.5B
Debt / EquityLower = less leverage
0.39×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
REPX
REPX
RMBS
RMBS
Q1 26
$134.3M
Q4 25
$182.8M
Q3 25
$79.2M
Q2 25
$87.8M
Q1 25
$132.2M
Q4 24
$99.8M
Q3 24
$114.0M
Q2 24
$124.6M
Total Debt
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
$247.9M
Q3 25
$367.0M
Q2 25
$275.2M
Q1 25
$249.3M
Q4 24
$269.5M
Q3 24
$288.6M
Q2 24
$322.7M
Stockholders' Equity
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
$634.2M
$1.4B
Q3 25
$566.5M
$1.3B
Q2 25
$556.9M
$1.2B
Q1 25
$532.4M
$1.2B
Q4 24
$510.6M
$1.1B
Q3 24
$507.4M
$1.0B
Q2 24
$489.0M
$1.0B
Total Assets
REPX
REPX
RMBS
RMBS
Q1 26
$1.5B
Q4 25
$1.2B
$1.5B
Q3 25
$1.2B
$1.4B
Q2 25
$1.0B
$1.5B
Q1 25
$994.9M
$1.4B
Q4 24
$993.5M
$1.3B
Q3 24
$997.9M
$1.3B
Q2 24
$1.0B
$1.3B
Debt / Equity
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
0.39×
Q3 25
0.65×
Q2 25
0.49×
Q1 25
0.47×
Q4 24
0.53×
Q3 24
0.57×
Q2 24
0.66×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
REPX
REPX
RMBS
RMBS
Operating Cash FlowLast quarter
$64.9M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
$64.9M
$99.8M
Q3 25
$63.6M
$88.4M
Q2 25
$33.6M
$94.4M
Q1 25
$50.4M
$77.4M
Q4 24
$66.4M
$59.0M
Q3 24
$72.1M
$62.1M
Q2 24
$51.6M
$70.4M
Free Cash Flow
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
$93.3M
Q3 25
$82.5M
Q2 25
$87.9M
Q1 25
$69.5M
Q4 24
$52.5M
Q3 24
$52.2M
Q2 24
$59.1M
FCF Margin
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
49.0%
Q3 25
46.2%
Q2 25
51.0%
Q1 25
41.7%
Q4 24
32.6%
Q3 24
35.9%
Q2 24
44.7%
Capex Intensity
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
3.4%
Q3 25
3.3%
Q2 25
3.8%
Q1 25
4.7%
Q4 24
4.0%
Q3 24
6.8%
Q2 24
8.6%
Cash Conversion
REPX
REPX
RMBS
RMBS
Q1 26
Q4 25
1.56×
Q3 25
3.90×
1.83×
Q2 25
1.10×
1.63×
Q1 25
1.76×
1.28×
Q4 24
0.95×
Q3 24
2.81×
1.28×
Q2 24
1.54×
1.95×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

REPX
REPX

Segment breakdown not available.

RMBS
RMBS

Product revenue$88.0M49%
Royalties$69.6M39%
Contract and other revenue$22.6M13%

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