Onto Innovation [ONTO] vs Amkor Technology [AMKR] Detailed Stock Comparison

Onto Innovation Inc.

NYSE
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Amkor Technology Inc.

NASDAQ
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TLDR: Quick Comparison Summary

Based on 21 vital metrics comparison: Onto Innovation Inc. wins in 10 metrics, Amkor Technology Inc. wins in 10 metrics, with 0 ties. Both stocks appear equally matched on key metrics.

View Metrics Details

Vital Metrics Comparison

Metric Onto Innovation Inc. Amkor Technology Inc. Better
P/E Ratio (TTM) 103.98 48.61 Amkor Technology Inc.
Price-to-Book Ratio 6.86 4.03 Amkor Technology Inc.
Debt-to-Equity Ratio 0.83 36.97 Onto Innovation Inc.
PEG Ratio -1.32 0.80 Amkor Technology Inc.
EV/EBITDA 50.49 15.99 Amkor Technology Inc.
Profit Margin (TTM) 13.60% 5.57% Onto Innovation Inc.
Operating Margin (TTM) 20.86% 9.77% Onto Innovation Inc.
EBITDA Margin (TTM) 20.86% 9.77% Onto Innovation Inc.
Return on Equity 6.79% 8.66% Amkor Technology Inc.
Return on Assets (TTM) 5.93% 3.87% Onto Innovation Inc.
Free Cash Flow (TTM) $299.80M $190.99M Onto Innovation Inc.
Dividend Yield N/A 0.85% N/A
1-Year Return 180.88% 286.02% Amkor Technology Inc.
Price-to-Sales Ratio (TTM) 14.36 2.69 Amkor Technology Inc.
Enterprise Value $13.80B $17.74B Amkor Technology Inc.
EV/Revenue Ratio 13.73 2.65 Amkor Technology Inc.
Gross Profit Margin (TTM) 46.39% 16.66% Onto Innovation Inc.
Revenue per Share (TTM) $20 $27 Amkor Technology Inc.
Earnings per Share (Diluted) $2.79 $1.50 Onto Innovation Inc.
Beta (Stock Volatility) 1.47 1.95 Onto Innovation Inc.
Short % of Float 3.42% 14.12% Onto Innovation Inc.

Onto Innovation Inc. vs Amkor Technology Inc. Stock Performance Analysis

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ONTO
AMKR

Performance Comparison

Short-term Returns

Stock1D1W1M3M6MYTD
Onto Innovation Inc.0.70%4.90%-6.53%34.93%77.07%68.79%
Amkor Technology Inc.0.62%4.17%5.98%68.65%71.18%75.21%

Long-term Returns

Stock1Y3Y5Y10Y15Y20Y
Onto Innovation Inc.180.88%140.85%258.82%684.21%684.21%684.21%
Amkor Technology Inc.286.02%167.44%215.46%988.58%1,049.75%601.92%

Performance & Financial Health Analysis: Onto Innovation Inc. vs Amkor Technology Inc.

MetricONTOAMKR
Market Information
Market Cap i$14.54B$19.35B
Market Cap CategoryLarge capLarge cap
10 Day Avg. Volume i918,6664,114,990
90 Day Avg. Volume i781,9323,527,180
Last Close$279.98$75.20
52 Week Range$89.40 - $316.00$17.81 - $79.50
% from 52W High-11.40%-5.41%
All-Time High$316.00 (Apr 24, 2026)$79.50 (Jun 03, 2026)
% from All-Time High-11.40%-5.41%
Growth Metrics
Quarterly Revenue Growth0.01%0.16%
Quarterly Earnings Growth-0.78%0.63%
Financial Health
Profit Margin (TTM) i0.14%0.06%
Operating Margin (TTM) i0.21%0.10%
Return on Equity (TTM) i0.07%0.09%
Debt to Equity (MRQ) i0.8336.97
Cash & Liquidity
Book Value per Share (MRQ)$42.27$18.08
Cash per Share (MRQ)$12.87$8.05
Operating Cash Flow (TTM) i$328.32M$1.10B
Levered Free Cash Flow (TTM) i$237.39M$-114,932,128
Dividends
Last 12-Month Dividend Yield iN/A0.85%
Last 12-Month Dividend iN/A$0.40

Valuation & Enterprise Metrics Analysis: Onto Innovation Inc. vs Amkor Technology Inc.

MetricONTO (Apr 24, 2026)AMKR (Apr 26, 2026)
Price Ratios
P/E Ratio (TTM) i103.9848.61
Forward P/E i32.0031.80
PEG Ratio i-1.320.80
Price to Sales (TTM) i14.362.69
Price to Book (MRQ) i6.864.03
Market Capitalization
Market Capitalization i$14.54B$19.35B
Enterprise Value i$13.80B$17.74B
Enterprise Value Metrics
Enterprise to Revenue i13.732.65
Enterprise to EBITDA i50.4915.99
Risk & Other Metrics
Beta i1.471.95
Book Value per Share (MRQ) i$42.27$18.08

Financial Statements Comparison: Onto Innovation Inc. vs Amkor Technology Inc.

Financial Metrics

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Revenue

Operating Margin

Profit Margin

Long Term Debt

Income Flow Analysis

Financial Statements Comparison

Income Statement

MetricONTO (2025)AMKR (2025)
Revenue/Sales i1.01B6.71B
Cost of Goods Sold i505.49M5.77B
COGS % of Revenue i50.3%86.0%
Gross Profit i499.77M938.60M
Gross Margin i49.7%14.0%
Research & Development i131.98M166.74M
Operating Income (EBIT) i151.35M467.39M
Operating Margin i15.1%7.0%
EBITDA i234.65M1.17B
EBITDA Margin i23.3%17.5%
Pre-Tax Income i162.90M444.62M
Pre-Tax Income % of Revenue i16.2%6.6%
Income Tax i26.14M68.50M
Income Tax % of Revenue i2.6%1.0%
Net Income (Profit) i136.76M376.12M
Profit Margin i13.6%5.6%

Balance Sheet & Liquidity Metrics

MetricONTO (2025)AMKR (2025)
Cash & Equivalents i346.12M1.38B
Total Current Assets i1.27B3.88B
Total Current Assets % of Revenue i126.1%57.9%
Total Current Liabilities i218.95M1.71B
Total Current Liabilities % of Revenue i21.8%25.5%
Long-Term Debt i11.26M1.33B
Long-Term Debt % of Revenue i1.1%19.8%
Total Shareholders Equity i2.10B4.51B
Retained Earnings i743.79M2.63B
Retained Earnings % of Revenue i74.0%39.2%
Property, Plant & Equipment i16.25M311.30M

Cash Flow Statement Comparison

MetricONTO (2025)AMKR (2025)
Operating Cash Flow i328.03M1.09B
Operating Cash Flow % of Revenue i32.6%16.3%
Capital Expenditures i-28.51M-794.34M
Free Cash Flow i299.80M190.99M
FCF Margin i29.8%2.8%
Debt Repayment iN/A-899.47M
Common Stock Repurchase i-75.02MN/A

Short Interest & Institutional Ownership Analysis

MetricONTOAMKR
Shares Short i1.34M8.60M
Short Ratio i1.732.53
Short % of Float i3.42%14.12%
Shares Outstanding i49.70M247.30M
Float Shares i49.36M133.96M
% Held by Insiders i0.65%49.83%
% Held by Institutions i98.85%46.62%
% Held by Public i0.50%3.55%

Dividend Analysis & Yield Comparison: Onto Innovation Inc. vs Amkor Technology Inc.

MetricONTOAMKR
Last 12-Month Dividend iN/A$0.40
Last 12-Month Dividend Yield iN/A0.85%
3-Year Avg Annual Dividend iN/A$0.47
3-Year Avg Dividend Yield iN/A0.41%
3-Year Total Dividends iN/A$1.42
Ex-Dividend DateN/AMar 12, 2026