Proto Labs [PRLB] vs Mueller Industries [MLI] Detailed Stock Comparison

Proto Labs Inc.

NYSE
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Mueller Industries Inc.

NYSE
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TLDR: Quick Comparison Summary

Based on 21 vital metrics comparison: Proto Labs Inc. wins in 6 metrics, Mueller Industries Inc. wins in 13 metrics, with 0 ties. Mueller Industries Inc. appears stronger overall.

View Metrics Details

Vital Metrics Comparison

Metric Proto Labs Inc. Mueller Industries Inc. Better
P/E Ratio (TTM) 73.31 19.56 Mueller Industries Inc.
Price-to-Book Ratio 2.26 4.65 Proto Labs Inc.
Debt-to-Equity Ratio 0.45 0.68 Proto Labs Inc.
PEG Ratio -0.05 1.34 Mueller Industries Inc.
EV/EBITDA 23.34 12.76 Mueller Industries Inc.
Profit Margin (TTM) 3.98% 19.37% Mueller Industries Inc.
Operating Margin (TTM) 5.67% 23.05% Mueller Industries Inc.
EBITDA Margin (TTM) 5.67% 23.05% Mueller Industries Inc.
Return on Equity 3.16% 28.30% Mueller Industries Inc.
Return on Assets (TTM) 2.17% 17.04% Mueller Industries Inc.
Free Cash Flow (TTM) $59.66M $686.64M Mueller Industries Inc.
Dividend Yield N/A 1.00% N/A
1-Year Return 104.87% 65.15% Proto Labs Inc.
Price-to-Sales Ratio (TTM) 2.88 3.41 Proto Labs Inc.
Enterprise Value $1.41B $13.34B Mueller Industries Inc.
EV/Revenue Ratio 2.64 3.05 Proto Labs Inc.
Gross Profit Margin (TTM) 44.23% 25.75% Proto Labs Inc.
Revenue per Share (TTM) $22 $40 Mueller Industries Inc.
Earnings per Share (Diluted) $0.88 $6.86 Mueller Industries Inc.
Beta (Stock Volatility) 1.31 N/A N/A
Short % of Float 3.65% 1.73% Mueller Industries Inc.

Proto Labs Inc. vs Mueller Industries Inc. Stock Performance Analysis

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PRLB
MLI

Performance Comparison

Short-term Returns

Stock1D1W1M3M6MYTD
Proto Labs Inc.-4.58%0.38%16.06%20.51%45.90%45.41%
Mueller Industries Inc.0.60%-3.27%0.38%11.06%17.70%12.45%

Long-term Returns

Stock1Y3Y5Y10Y15Y20Y
Proto Labs Inc.104.87%129.71%-14.27%12.34%161.24%161.24%
Mueller Industries Inc.65.15%226.40%455.03%717.03%1,358.05%1,460.68%

Performance & Financial Health Analysis: Proto Labs Inc. vs Mueller Industries Inc.

MetricPRLBMLI
Market Information
Market Cap i$1.53B$15.06B
Market Cap CategorySmall capLarge cap
10 Day Avg. Volume i147,190851,433
90 Day Avg. Volume i164,473786,088
Last Close$74.67$131.35
52 Week Range$36.59 - $78.44$72.16 - $141.51
% from 52W High-4.81%-7.18%
All-Time High$286.57 (Jan 25, 2021)$141.51 (May 08, 2026)
% from All-Time High-73.94%-7.18%
Growth Metrics
Quarterly Revenue Growth0.12%0.19%
Quarterly Earnings Growth0.12%0.52%
Financial Health
Profit Margin (TTM) i0.04%0.19%
Operating Margin (TTM) i0.06%0.23%
Return on Equity (TTM) i0.03%0.28%
Debt to Equity (MRQ) i0.450.68
Cash & Liquidity
Book Value per Share (MRQ)$28.52$28.87
Cash per Share (MRQ)$5.39$12.86
Operating Cash Flow (TTM) i$74.50M$721.63M
Levered Free Cash Flow (TTM) i$51.64M$497.45M
Dividends
Last 12-Month Dividend Yield iN/A1.00%
Last 12-Month Dividend iN/A$1.10

Valuation & Enterprise Metrics Analysis: Proto Labs Inc. vs Mueller Industries Inc.

MetricPRLB (Apr 21, 2026)MLI (Apr 24, 2026)
Price Ratios
P/E Ratio (TTM) i73.3119.56
Forward P/E i32.5416.07
PEG Ratio i-0.051.34
Price to Sales (TTM) i2.883.41
Price to Book (MRQ) i2.264.65
Market Capitalization
Market Capitalization i$1.53B$15.06B
Enterprise Value i$1.41B$13.34B
Enterprise Value Metrics
Enterprise to Revenue i2.643.05
Enterprise to EBITDA i23.3412.76
Risk & Other Metrics
Beta i1.31N/A
Book Value per Share (MRQ) i$28.52$28.87

Financial Statements Comparison: Proto Labs Inc. vs Mueller Industries Inc.

Financial Metrics

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Revenue

Operating Margin

Profit Margin

Long Term Debt

Income Flow Analysis

Financial Statements Comparison

Income Statement

MetricPRLB (2025)MLI (2025)
Revenue/Sales i533.13M4.18B
Cost of Goods Sold i295.99M2.97B
COGS % of Revenue i55.5%71.0%
Gross Profit i237.14M1.21B
Gross Margin i44.5%29.0%
Research & Development i42.81MN/A
Operating Income (EBIT) i26.20M893.10M
Operating Margin i4.9%21.4%
EBITDA i61.11M1.00B
EBITDA Margin i11.5%24.0%
Pre-Tax Income i31.06M1.01B
Pre-Tax Income % of Revenue i5.8%24.2%
Income Tax i9.82M247.35M
Income Tax % of Revenue i1.8%5.9%
Net Income (Profit) i21.24M773.59M
Profit Margin i4.0%18.5%

Balance Sheet & Liquidity Metrics

MetricPRLB (2025)MLI (2025)
Cash & Equivalents i110.83M1.37B
Total Current Assets i233.54M2.45B
Total Current Assets % of Revenue i43.8%58.5%
Total Current Liabilities i67.00M413.13M
Total Current Liabilities % of Revenue i12.6%9.9%
Long-Term Debt i1.61M18.97M
Long-Term Debt % of Revenue i0.3%0.5%
Total Shareholders Equity i673.93M3.24B
Retained Earnings i240.76M3.76B
Retained Earnings % of Revenue i45.2%90.0%
Property, Plant & Equipment i3.26M27.21M

Cash Flow Statement Comparison

MetricPRLB (2025)MLI (2025)
Operating Cash Flow i59.08M797.75M
Operating Cash Flow % of Revenue i11.1%19.1%
Capital Expenditures i-14.01MN/A
Free Cash Flow i59.66M686.64M
FCF Margin i11.2%16.4%
Debt Repayment i-309,000-185,000
Common Stock Repurchase i-46.40M-243.62M

Short Interest & Institutional Ownership Analysis

MetricPRLBMLI
Shares Short i630,6131.87M
Short Ratio i3.792.55
Short % of Float i3.65%1.73%
Shares Outstanding i23.63M111.18M
Float Shares i23.49M106.51M
% Held by Insiders i1.31%2.21%
% Held by Institutions i93.13%93.30%
% Held by Public i5.56%4.49%

Dividend Analysis & Yield Comparison: Proto Labs Inc. vs Mueller Industries Inc.

MetricPRLBMLI
Last 12-Month Dividend iN/A$1.10
Last 12-Month Dividend Yield iN/A1.00%
3-Year Avg Annual Dividend iN/A$0.84
3-Year Avg Dividend Yield iN/A0.30%
3-Year Total Dividends iN/A$2.52
Ex-Dividend DateN/AMar 13, 2026