vs

Side-by-side financial comparison of AC Immune SA (ACIU) and KOSS CORP (KOSS). Click either name above to swap in a different company.

KOSS CORP is the larger business by last-quarter revenue ($2.9M vs $1.4M, roughly 2.0× AC Immune SA). KOSS CORP runs the higher net margin — -19.8% vs -1622.4%, a 1602.7% gap on every dollar of revenue. On growth, AC Immune SA posted the faster year-over-year revenue change (90.1% vs -19.6%).

AC Immune SA is a clinical-stage biopharmaceutical company focused on developing innovative therapeutics and diagnostic solutions for neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease, and rare tauopathies. It operates globally, partners with leading pharmaceutical enterprises, and prioritizes addressing unmet medical needs in neurological care segments.

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

ACIU vs KOSS — Head-to-Head

Bigger by revenue
KOSS
KOSS
2.0× larger
KOSS
$2.9M
$1.4M
ACIU
Growing faster (revenue YoY)
ACIU
ACIU
+109.7% gap
ACIU
90.1%
-19.6%
KOSS
Higher net margin
KOSS
KOSS
1602.7% more per $
KOSS
-19.8%
-1622.4%
ACIU

Income Statement — Q2 FY2025 vs Q2 FY2026

Metric
ACIU
ACIU
KOSS
KOSS
Revenue
$1.4M
$2.9M
Net Profit
$-23.3M
$-565.4K
Gross Margin
29.0%
Operating Margin
-1484.5%
-35.5%
Net Margin
-1622.4%
-19.8%
Revenue YoY
90.1%
-19.6%
Net Profit YoY
6.9%
-700.6%
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
ACIU
ACIU
KOSS
KOSS
Q4 25
$2.9M
Q3 25
$4.1M
Q2 25
$1.4M
$3.1M
Q1 25
$2.8M
Q4 24
$3.6M
Q3 24
$3.2M
Q2 24
$755.7K
$2.9M
Q1 24
$2.6M
Net Profit
ACIU
ACIU
KOSS
KOSS
Q4 25
$-565.4K
Q3 25
$243.7K
Q2 25
$-23.3M
$-232.7K
Q1 25
$-316.7K
Q4 24
$94.1K
Q3 24
$-419.5K
Q2 24
$-25.0M
$-110.4K
Q1 24
$-313.8K
Gross Margin
ACIU
ACIU
KOSS
KOSS
Q4 25
29.0%
Q3 25
40.0%
Q2 25
36.0%
Q1 25
39.0%
Q4 24
39.5%
Q3 24
36.6%
Q2 24
40.4%
Q1 24
31.9%
Operating Margin
ACIU
ACIU
KOSS
KOSS
Q4 25
-35.5%
Q3 25
-1.1%
Q2 25
-1484.5%
-14.2%
Q1 25
-18.7%
Q4 24
-4.0%
Q3 24
-19.9%
Q2 24
-3051.1%
-11.0%
Q1 24
-23.1%
Net Margin
ACIU
ACIU
KOSS
KOSS
Q4 25
-19.8%
Q3 25
6.0%
Q2 25
-1622.4%
-7.5%
Q1 25
-11.4%
Q4 24
2.6%
Q3 24
-13.1%
Q2 24
-3313.0%
-3.8%
Q1 24
-11.9%
EPS (diluted)
ACIU
ACIU
KOSS
KOSS
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
ACIU
ACIU
KOSS
KOSS
Cash + ST InvestmentsLiquidity on hand
$28.3M
$15.5M
Total DebtLower is stronger
Stockholders' EquityBook value
$82.2M
$30.3M
Total Assets
$209.2M
$36.8M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACIU
ACIU
KOSS
KOSS
Q4 25
$15.5M
Q3 25
$16.5M
Q2 25
$28.3M
$15.7M
Q1 25
$13.0M
Q4 24
$9.7M
Q3 24
$11.9M
Q2 24
$56.7M
$14.9M
Q1 24
$9.9M
Stockholders' Equity
ACIU
ACIU
KOSS
KOSS
Q4 25
$30.3M
Q3 25
$30.9M
Q2 25
$82.2M
$30.6M
Q1 25
$30.7M
Q4 24
$31.0M
Q3 24
$30.8M
Q2 24
$135.8M
$31.1M
Q1 24
$31.1M
Total Assets
ACIU
ACIU
KOSS
KOSS
Q4 25
$36.8M
Q3 25
$37.7M
Q2 25
$209.2M
$37.2M
Q1 25
$37.3M
Q4 24
$37.4M
Q3 24
$38.1M
Q2 24
$261.3M
$37.2M
Q1 24
$37.6M

Cash Flow & Capital Efficiency

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

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

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACIU
ACIU
KOSS
KOSS
Q4 25
$-760.8K
Q3 25
$762.6K
Q2 25
$-534.9K
Q1 25
$370.4K
Q4 24
$-252.0K
Q3 24
$201.6K
Q2 24
$-174.0K
Q1 24
$328.6K
Free Cash Flow
ACIU
ACIU
KOSS
KOSS
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
ACIU
ACIU
KOSS
KOSS
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
ACIU
ACIU
KOSS
KOSS
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
ACIU
ACIU
KOSS
KOSS
Q4 25
Q3 25
3.13×
Q2 25
Q1 25
Q4 24
-2.68×
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

Related Comparisons