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Side-by-side financial comparison of KOSS CORP (KOSS) and MESABI TRUST (MSB). Click either name above to swap in a different company.

MESABI TRUST is the larger business by last-quarter revenue ($3.6M vs $2.9M, roughly 1.3× KOSS CORP). MESABI TRUST runs the higher net margin — 77.1% vs -19.8%, a 96.8% gap on every dollar of revenue. On growth, KOSS CORP posted the faster year-over-year revenue change (-19.6% vs -95.5%). Over the past eight quarters, KOSS CORP's revenue compounded faster (4.2% CAGR vs -24.1%).

Koss Corporation is a company in Milwaukee, Wisconsin, US that manufactures headphones. The company created the first high-fidelity stereo headphones in 1958.

Mesabi Trust is a United States-based royalty trust that holds permanent royalty interests in iron ore mining properties located in Minnesota's Mesabi Range. It earns revenue primarily from royalty payments tied to the production and sale of iron ore products, with core earnings sourced from active mining partners operating on the land it holds interests in, catering to the global steel manufacturing market.

KOSS vs MSB — Head-to-Head

Bigger by revenue
MSB
MSB
1.3× larger
MSB
$3.6M
$2.9M
KOSS
Growing faster (revenue YoY)
KOSS
KOSS
+75.9% gap
KOSS
-19.6%
-95.5%
MSB
Higher net margin
MSB
MSB
96.8% more per $
MSB
77.1%
-19.8%
KOSS
Faster 2-yr revenue CAGR
KOSS
KOSS
Annualised
KOSS
4.2%
-24.1%
MSB

Income Statement — Q2 FY2026 vs Q3 FY2026

Metric
KOSS
KOSS
MSB
MSB
Revenue
$2.9M
$3.6M
Net Profit
$-565.4K
$2.8M
Gross Margin
29.0%
77.1%
Operating Margin
-35.5%
Net Margin
-19.8%
77.1%
Revenue YoY
-19.6%
-95.5%
Net Profit YoY
-700.6%
-96.5%
EPS (diluted)
$-0.06

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
KOSS
KOSS
MSB
MSB
Q4 25
$2.9M
$3.6M
Q3 25
$4.1M
$5.6M
Q2 25
$3.1M
$4.7M
Q1 25
$2.8M
$6.9M
Q4 24
$3.6M
$79.0M
Q3 24
$3.2M
$6.5M
Q2 24
$2.9M
$6.3M
Q1 24
$2.6M
$6.2M
Net Profit
KOSS
KOSS
MSB
MSB
Q4 25
$-565.4K
$2.8M
Q3 25
$243.7K
$4.7M
Q2 25
$-232.7K
$3.6M
Q1 25
$-316.7K
$6.1M
Q4 24
$94.1K
$78.3M
Q3 24
$-419.5K
$5.4M
Q2 24
$-110.4K
$3.5M
Q1 24
$-313.8K
$4.7M
Gross Margin
KOSS
KOSS
MSB
MSB
Q4 25
29.0%
77.1%
Q3 25
40.0%
84.6%
Q2 25
36.0%
76.7%
Q1 25
39.0%
88.5%
Q4 24
39.5%
99.1%
Q3 24
36.6%
83.2%
Q2 24
40.4%
55.7%
Q1 24
31.9%
75.3%
Operating Margin
KOSS
KOSS
MSB
MSB
Q4 25
-35.5%
Q3 25
-1.1%
Q2 25
-14.2%
Q1 25
-18.7%
Q4 24
-4.0%
Q3 24
-19.9%
Q2 24
-11.0%
Q1 24
-23.1%
Net Margin
KOSS
KOSS
MSB
MSB
Q4 25
-19.8%
77.1%
Q3 25
6.0%
84.6%
Q2 25
-7.5%
76.7%
Q1 25
-11.4%
88.5%
Q4 24
2.6%
99.1%
Q3 24
-13.1%
83.2%
Q2 24
-3.8%
55.7%
Q1 24
-11.9%
75.3%
EPS (diluted)
KOSS
KOSS
MSB
MSB
Q4 25
$-0.06
Q3 25
$0.03
Q2 25
$-0.02
Q1 25
$-0.03
Q4 24
$0.01
Q3 24
$-0.05
Q2 24
$-0.01
Q1 24
$-0.03

Balance Sheet & Financial Strength

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

Metric
KOSS
KOSS
MSB
MSB
Cash + ST InvestmentsLiquidity on hand
$15.5M
Total DebtLower is stronger
Stockholders' EquityBook value
$30.3M
$21.1M
Total Assets
$36.8M
$26.0M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
KOSS
KOSS
MSB
MSB
Q4 25
$15.5M
Q3 25
$16.5M
Q2 25
$15.7M
Q1 25
$13.0M
Q4 24
$9.7M
Q3 24
$11.9M
Q2 24
$14.9M
Q1 24
$9.9M
Stockholders' Equity
KOSS
KOSS
MSB
MSB
Q4 25
$30.3M
$21.1M
Q3 25
$30.9M
$22.8M
Q2 25
$30.6M
$19.6M
Q1 25
$30.7M
$23.3M
Q4 24
$31.0M
$95.3M
Q3 24
$30.8M
$22.1M
Q2 24
$31.1M
$20.7M
Q1 24
$31.1M
$21.0M
Total Assets
KOSS
KOSS
MSB
MSB
Q4 25
$36.8M
$26.0M
Q3 25
$37.7M
$24.8M
Q2 25
$37.2M
$27.4M
Q1 25
$37.3M
$101.7M
Q4 24
$37.4M
$100.7M
Q3 24
$38.1M
$26.2M
Q2 24
$37.2M
$25.1M
Q1 24
$37.6M
$26.7M

Cash Flow & Capital Efficiency

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

Metric
KOSS
KOSS
MSB
MSB
Operating Cash FlowLast quarter
$-760.8K
$3.5M
Free Cash FlowOCF − Capex
$-1.1M
FCF MarginFCF / Revenue
-37.5%
Capex IntensityCapex / Revenue
10.9%
Cash ConversionOCF / Net Profit
1.27×
TTM Free Cash FlowTrailing 4 quarters
$-546.7K

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
KOSS
KOSS
MSB
MSB
Q4 25
$-760.8K
$3.5M
Q3 25
$762.6K
$4.4M
Q2 25
$-534.9K
$2.1M
Q1 25
$370.4K
$93.9M
Q4 24
$-252.0K
$78.2M
Q3 24
$201.6K
$3.8M
Q2 24
$-174.0K
$2.5M
Q1 24
$328.6K
$14.6M
Free Cash Flow
KOSS
KOSS
MSB
MSB
Q4 25
$-1.1M
Q3 25
$761.5K
Q2 25
$-541.8K
Q1 25
$306.2K
Q4 24
$-314.3K
Q3 24
$-155.6K
Q2 24
$-174.8K
Q1 24
$269.3K
FCF Margin
KOSS
KOSS
MSB
MSB
Q4 25
-37.5%
Q3 25
18.7%
Q2 25
-17.6%
Q1 25
11.0%
Q4 24
-8.8%
Q3 24
-4.9%
Q2 24
-6.0%
Q1 24
10.2%
Capex Intensity
KOSS
KOSS
MSB
MSB
Q4 25
10.9%
Q3 25
0.0%
Q2 25
0.2%
Q1 25
2.3%
Q4 24
1.8%
Q3 24
11.2%
Q2 24
0.0%
Q1 24
2.3%
Cash Conversion
KOSS
KOSS
MSB
MSB
Q4 25
1.27×
Q3 25
3.13×
0.92×
Q2 25
0.57×
Q1 25
15.48×
Q4 24
-2.68×
1.00×
Q3 24
0.71×
Q2 24
0.72×
Q1 24
3.11×

Financial Flow Comparison

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

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