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Side-by-side financial comparison of KOPIN CORP (KOPN) and Rhinebeck Bancorp, Inc. (RBKB). Click either name above to swap in a different company.

Rhinebeck Bancorp, Inc. is the larger business by last-quarter revenue ($13.5M vs $8.4M, roughly 1.6× KOPIN CORP). KOPIN CORP runs the higher net margin — 81.3% vs 17.3%, a 64.0% gap on every dollar of revenue. On growth, Rhinebeck Bancorp, Inc. posted the faster year-over-year revenue change (1701.1% vs -42.9%). Over the past eight quarters, Rhinebeck Bancorp, Inc.'s revenue compounded faster (14.0% CAGR vs -8.7%).

The Kopin Corporation is a Westborough, Massachusetts-based electronics manufacturer, best known for its microdisplay devices and application specific optical solutions for defense, enterprise, medical and consumer mobile electronics.

Rhinebeck Bancorp, Inc. is a US regional bank holding company based in New York. It operates Rhinebeck Bank, offering retail and commercial banking services including deposit accounts, loans, mortgages and wealth management, mainly serving consumers and small-to-medium businesses across New York's Hudson Valley region.

KOPN vs RBKB — Head-to-Head

Bigger by revenue
RBKB
RBKB
1.6× larger
RBKB
$13.5M
$8.4M
KOPN
Growing faster (revenue YoY)
RBKB
RBKB
+1743.9% gap
RBKB
1701.1%
-42.9%
KOPN
Higher net margin
KOPN
KOPN
64.0% more per $
KOPN
81.3%
17.3%
RBKB
Faster 2-yr revenue CAGR
RBKB
RBKB
Annualised
RBKB
14.0%
-8.7%
KOPN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
KOPN
KOPN
RBKB
RBKB
Revenue
$8.4M
$13.5M
Net Profit
$6.8M
$2.3M
Gross Margin
Operating Margin
-60.0%
21.7%
Net Margin
81.3%
17.3%
Revenue YoY
-42.9%
1701.1%
Net Profit YoY
449.5%
188.0%
EPS (diluted)
$0.04
$0.21

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
KOPN
KOPN
RBKB
RBKB
Q4 25
$8.4M
$13.5M
Q3 25
$12.0M
$14.0M
Q2 25
$8.5M
$13.1M
Q1 25
$10.5M
$12.8M
Q4 24
$14.6M
$750.0K
Q3 24
$13.3M
$773.0K
Q2 24
$12.3M
$10.7M
Q1 24
$10.0M
$10.4M
Net Profit
KOPN
KOPN
RBKB
RBKB
Q4 25
$6.8M
$2.3M
Q3 25
$4.1M
$2.7M
Q2 25
$-5.2M
$2.7M
Q1 25
$-3.1M
$2.3M
Q4 24
$-1.9M
$-2.7M
Q3 24
$-3.5M
$-8.1M
Q2 24
$-5.9M
$975.0K
Q1 24
$-32.5M
$1.1M
Operating Margin
KOPN
KOPN
RBKB
RBKB
Q4 25
-60.0%
21.7%
Q3 25
37.9%
23.9%
Q2 25
-64.6%
26.6%
Q1 25
-37.1%
22.9%
Q4 24
-15.1%
-444.9%
Q3 24
-21.0%
-1332.3%
Q2 24
-44.2%
11.8%
Q1 24
-325.4%
13.9%
Net Margin
KOPN
KOPN
RBKB
RBKB
Q4 25
81.3%
17.3%
Q3 25
34.1%
19.3%
Q2 25
-61.1%
20.8%
Q1 25
-29.5%
17.9%
Q4 24
-13.3%
-353.9%
Q3 24
-26.0%
-1042.9%
Q2 24
-48.0%
9.2%
Q1 24
-324.4%
10.8%
EPS (diluted)
KOPN
KOPN
RBKB
RBKB
Q4 25
$0.04
$0.21
Q3 25
$0.02
$0.25
Q2 25
$-0.03
$0.25
Q1 25
$-0.02
$0.21
Q4 24
$0.02
$-0.24
Q3 24
$-0.03
$-0.75
Q2 24
$-0.05
$0.09
Q1 24
$-0.27
$0.10

Balance Sheet & Financial Strength

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

Metric
KOPN
KOPN
RBKB
RBKB
Cash + ST InvestmentsLiquidity on hand
$36.4M
Total DebtLower is stronger
Stockholders' EquityBook value
$64.1M
$136.9M
Total Assets
$108.4M
$1.3B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
KOPN
KOPN
RBKB
RBKB
Q4 25
$36.4M
Q3 25
$26.5M
Q2 25
$26.8M
Q1 25
$31.5M
Q4 24
$35.6M
Q3 24
$36.2M
Q2 24
$17.6M
Q1 24
$21.1M
Stockholders' Equity
KOPN
KOPN
RBKB
RBKB
Q4 25
$64.1M
$136.9M
Q3 25
$21.3M
$133.0M
Q2 25
$16.0M
$129.0M
Q1 25
$20.7M
$126.0M
Q4 24
$23.3M
$121.8M
Q3 24
$22.7M
$122.7M
Q2 24
$-216.3K
$116.2M
Q1 24
$4.9M
$114.3M
Total Assets
KOPN
KOPN
RBKB
RBKB
Q4 25
$108.4M
$1.3B
Q3 25
$61.2M
$1.3B
Q2 25
$61.2M
$1.3B
Q1 25
$65.0M
$1.3B
Q4 24
$70.8M
$1.3B
Q3 24
$70.6M
$1.3B
Q2 24
$49.0M
$1.3B
Q1 24
$51.3M
$1.3B

Cash Flow & Capital Efficiency

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

Metric
KOPN
KOPN
RBKB
RBKB
Operating Cash FlowLast quarter
$-7.9M
$11.7M
Free Cash FlowOCF − Capex
$10.9M
FCF MarginFCF / Revenue
80.6%
Capex IntensityCapex / Revenue
6.3%
Cash ConversionOCF / Net Profit
-1.15×
5.03×
TTM Free Cash FlowTrailing 4 quarters
$19.4M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
KOPN
KOPN
RBKB
RBKB
Q4 25
$-7.9M
$11.7M
Q3 25
$-110.4K
$2.2M
Q2 25
$-4.2M
$2.4M
Q1 25
$-3.4M
$4.3M
Q4 24
$-1.6M
$8.5M
Q3 24
$-6.5M
$-3.6M
Q2 24
$-3.1M
$12.0M
Q1 24
$-3.1M
$-3.5M
Free Cash Flow
KOPN
KOPN
RBKB
RBKB
Q4 25
$10.9M
Q3 25
$2.0M
Q2 25
$-4.9M
$2.2M
Q1 25
$-3.9M
$4.2M
Q4 24
$-2.1M
$7.7M
Q3 24
$-6.5M
$-3.6M
Q2 24
$-3.1M
$11.8M
Q1 24
$-3.4M
$-3.7M
FCF Margin
KOPN
KOPN
RBKB
RBKB
Q4 25
80.6%
Q3 25
14.5%
Q2 25
-57.9%
17.2%
Q1 25
-37.1%
32.8%
Q4 24
-14.2%
1023.9%
Q3 24
-48.6%
-469.0%
Q2 24
-25.5%
111.1%
Q1 24
-33.4%
-36.0%
Capex Intensity
KOPN
KOPN
RBKB
RBKB
Q4 25
6.3%
Q3 25
1.4%
Q2 25
8.7%
1.4%
Q1 25
4.7%
0.9%
Q4 24
3.4%
105.5%
Q3 24
0.1%
6.3%
Q2 24
0.5%
1.2%
Q1 24
2.4%
2.3%
Cash Conversion
KOPN
KOPN
RBKB
RBKB
Q4 25
-1.15×
5.03×
Q3 25
-0.03×
0.83×
Q2 25
0.89×
Q1 25
1.89×
Q4 24
Q3 24
Q2 24
12.27×
Q1 24
-3.12×

Financial Flow Comparison

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

Revenue Breakdown by Segment

KOPN
KOPN

Net Product Revenues$5.6M67%
Other$2.7M33%

RBKB
RBKB

Segment breakdown not available.

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