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Side-by-side financial comparison of Atmus Filtration Technologies Inc. (ATMU) and OSI SYSTEMS INC (OSIS). Click either name above to swap in a different company.
OSI SYSTEMS INC is the larger business by last-quarter revenue ($464.1M vs $446.6M, roughly 1.0× Atmus Filtration Technologies Inc.). Atmus Filtration Technologies Inc. runs the higher net margin — 10.7% vs 8.3%, a 2.4% gap on every dollar of revenue. On growth, OSI SYSTEMS INC posted the faster year-over-year revenue change (10.5% vs 9.8%). OSI SYSTEMS INC produced more free cash flow last quarter ($55.5M vs $31.2M). Over the past eight quarters, OSI SYSTEMS INC's revenue compounded faster (7.0% CAGR vs 2.3%).
Atmus Filtration Technologies Inc. designs, manufactures and distributes high-performance filtration products and tailored solutions. Its portfolio covers air, fuel, oil and hydraulic filtration systems, serving global automotive, heavy-duty vehicle, industrial equipment and aerospace end markets, for both original equipment manufacturers and aftermarket replacement customers.
OSI Systems, Inc. is an American company based in California that develops and markets security and inspection systems such as airport security X-ray machines and metal detectors, medical monitoring and anesthesia systems, and optoelectronic devices. As of June 2010, the company employs approximately 3,180 personnel globally and includes subsidiary companies Spacelabs Healthcare, Rapiscan Systems and OSI Optoelectronics.
ATMU vs OSIS — Head-to-Head
Income Statement — Q4 FY2025 vs Q2 FY2026
| Metric | | |
|---|---|---|
| Revenue | $446.6M | $464.1M |
| Net Profit | $48.0M | $38.7M |
| Gross Margin | 28.5% | 32.7% |
| Operating Margin | 15.8% | 12.7% |
| Net Margin | 10.7% | 8.3% |
| Revenue YoY | 9.8% | 10.5% |
| Net Profit YoY | 19.7% | 2.3% |
| EPS (diluted) | $0.58 | $2.22 |
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.
| Q4 25 | $446.6M | $464.1M | ||
| Q3 25 | $447.7M | $384.6M | ||
| Q2 25 | $453.5M | $505.0M | ||
| Q1 25 | $416.5M | $444.4M | ||
| Q4 24 | $406.7M | $419.8M | ||
| Q3 24 | $403.7M | $344.0M | ||
| Q2 24 | $432.6M | $480.9M | ||
| Q1 24 | $426.6M | $405.4M |
| Q4 25 | $48.0M | $38.7M | ||
| Q3 25 | $54.8M | $20.6M | ||
| Q2 25 | $59.9M | $52.7M | ||
| Q1 25 | $44.7M | $41.1M | ||
| Q4 24 | $40.1M | $37.8M | ||
| Q3 24 | $43.8M | $17.9M | ||
| Q2 24 | $56.2M | $44.7M | ||
| Q1 24 | $45.5M | $34.0M |
| Q4 25 | 28.5% | 32.7% | ||
| Q3 25 | 28.9% | 32.0% | ||
| Q2 25 | 28.9% | 33.3% | ||
| Q1 25 | 26.5% | 33.8% | ||
| Q4 24 | 26.3% | 35.1% | ||
| Q3 24 | 27.6% | 35.3% | ||
| Q2 24 | 30.5% | 32.1% | ||
| Q1 24 | 26.2% | 33.6% |
| Q4 25 | 15.8% | 12.7% | ||
| Q3 25 | 18.3% | 8.6% | ||
| Q2 25 | 18.0% | 14.5% | ||
| Q1 25 | 15.6% | 12.7% | ||
| Q4 24 | 13.4% | 13.8% | ||
| Q3 24 | 15.7% | 8.8% | ||
| Q2 24 | 18.4% | 13.1% | ||
| Q1 24 | 16.1% | 12.7% |
| Q4 25 | 10.7% | 8.3% | ||
| Q3 25 | 12.2% | 5.3% | ||
| Q2 25 | 13.2% | 10.4% | ||
| Q1 25 | 10.7% | 9.3% | ||
| Q4 24 | 9.9% | 9.0% | ||
| Q3 24 | 10.8% | 5.2% | ||
| Q2 24 | 13.0% | 9.3% | ||
| Q1 24 | 10.7% | 8.4% |
| Q4 25 | $0.58 | $2.22 | ||
| Q3 25 | $0.66 | $1.18 | ||
| Q2 25 | $0.72 | $3.04 | ||
| Q1 25 | $0.54 | $2.40 | ||
| Q4 24 | $0.49 | $2.22 | ||
| Q3 24 | $0.52 | $1.05 | ||
| Q2 24 | $0.67 | $2.57 | ||
| Q1 24 | $0.54 | $1.95 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $236.4M | $336.7M |
| Total DebtLower is stronger | $570.0M | $1.0B |
| Stockholders' EquityBook value | $378.5M | $845.5M |
| Total Assets | $1.4B | $2.5B |
| Debt / EquityLower = less leverage | 1.51× | 1.19× |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $236.4M | $336.7M | ||
| Q3 25 | $218.3M | $124.4M | ||
| Q2 25 | $190.8M | $106.4M | ||
| Q1 25 | $183.3M | $95.8M | ||
| Q4 24 | $184.3M | $101.6M | ||
| Q3 24 | $196.8M | $85.1M | ||
| Q2 24 | $160.5M | $95.4M | ||
| Q1 24 | $149.2M | $101.4M |
| Q4 25 | $570.0M | $1.0B | ||
| Q3 25 | $577.5M | $442.2M | ||
| Q2 25 | $585.0M | $471.6M | ||
| Q1 25 | $588.8M | $473.2M | ||
| Q4 24 | $592.5M | $474.8M | ||
| Q3 24 | $596.2M | $476.3M | ||
| Q2 24 | $600.0M | $137.6M | ||
| Q1 24 | $600.0M | — |
| Q4 25 | $378.5M | $845.5M | ||
| Q3 25 | $336.7M | $946.0M | ||
| Q2 25 | $316.3M | $951.1M | ||
| Q1 25 | $265.3M | $879.3M | ||
| Q4 24 | $227.4M | $825.8M | ||
| Q3 24 | $221.2M | $786.5M | ||
| Q2 24 | $178.1M | $863.5M | ||
| Q1 24 | $121.8M | $813.4M |
| Q4 25 | $1.4B | $2.5B | ||
| Q3 25 | $1.3B | $2.3B | ||
| Q2 25 | $1.3B | $2.2B | ||
| Q1 25 | $1.2B | $2.1B | ||
| Q4 24 | $1.2B | $2.1B | ||
| Q3 24 | $1.2B | $2.1B | ||
| Q2 24 | $1.2B | $1.9B | ||
| Q1 24 | $1.1B | $1.8B |
| Q4 25 | 1.51× | 1.19× | ||
| Q3 25 | 1.72× | 0.47× | ||
| Q2 25 | 1.85× | 0.50× | ||
| Q1 25 | 2.22× | 0.54× | ||
| Q4 24 | 2.61× | 0.57× | ||
| Q3 24 | 2.70× | 0.61× | ||
| Q2 24 | 3.37× | 0.16× | ||
| Q1 24 | 4.93× | — |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $47.5M | $62.2M |
| Free Cash FlowOCF − Capex | $31.2M | $55.5M |
| FCF MarginFCF / Revenue | 7.0% | 12.0% |
| Capex IntensityCapex / Revenue | 3.6% | 1.4% |
| Cash ConversionOCF / Net Profit | 0.99× | 1.61× |
| TTM Free Cash FlowTrailing 4 quarters | $148.8M | $137.2M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $47.5M | $62.2M | ||
| Q3 25 | $82.1M | $17.1M | ||
| Q2 25 | $44.4M | $562.0K | ||
| Q1 25 | $28.7M | $81.6M | ||
| Q4 24 | $20.0M | $52.5M | ||
| Q3 24 | $70.7M | $-37.2M | ||
| Q2 24 | $22.9M | $-29.0M | ||
| Q1 24 | $-8.2M | $-52.1M |
| Q4 25 | $31.2M | $55.5M | ||
| Q3 25 | $68.9M | $10.1M | ||
| Q2 25 | $32.4M | $-5.6M | ||
| Q1 25 | $16.3M | $77.1M | ||
| Q4 24 | $10.0M | $47.1M | ||
| Q3 24 | $54.3M | $-44.9M | ||
| Q2 24 | $11.3M | $-37.5M | ||
| Q1 24 | $-18.8M | $-57.0M |
| Q4 25 | 7.0% | 12.0% | ||
| Q3 25 | 15.4% | 2.6% | ||
| Q2 25 | 7.1% | -1.1% | ||
| Q1 25 | 3.9% | 17.4% | ||
| Q4 24 | 2.5% | 11.2% | ||
| Q3 24 | 13.5% | -13.0% | ||
| Q2 24 | 2.6% | -7.8% | ||
| Q1 24 | -4.4% | -14.1% |
| Q4 25 | 3.6% | 1.4% | ||
| Q3 25 | 2.9% | 1.8% | ||
| Q2 25 | 2.6% | 1.2% | ||
| Q1 25 | 3.0% | 1.0% | ||
| Q4 24 | 2.5% | 1.3% | ||
| Q3 24 | 4.1% | 2.2% | ||
| Q2 24 | 2.7% | 1.8% | ||
| Q1 24 | 2.5% | 1.2% |
| Q4 25 | 0.99× | 1.61× | ||
| Q3 25 | 1.50× | 0.83× | ||
| Q2 25 | 0.74× | 0.01× | ||
| Q1 25 | 0.64× | 1.98× | ||
| Q4 24 | 0.50× | 1.39× | ||
| Q3 24 | 1.61× | -2.07× | ||
| Q2 24 | 0.41× | -0.65× | ||
| Q1 24 | -0.18× | -1.53× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
ATMU
| Fuel Products | $219.1M | 49% |
| Lube | $84.8M | 19% |
| Air | $74.0M | 17% |
| Other | $68.7M | 15% |
| Related Party | $14.9M | 3% |
OSIS
| Security Division | $334.7M | 72% |
| Optoelectronics And Manufacturing Division | $92.8M | 20% |
| Healthcare Division | $36.5M | 8% |
