Regeneron Pharmaceuticals, Inc. (REGN) P/E Ratio History
Historical price-to-earnings valuation from 2004 to 2025
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Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of March 1, 2026, Regeneron Pharmaceuticals, Inc. (REGN) trades at a price-to-earnings ratio of 18.8x, with a stock price of $781.67 and trailing twelve-month earnings per share of $41.91.
The current P/E is roughly in line with its 5-year average of 17.5x. Over the past five years, REGN's P/E has ranged from a low of 8.8x to a high of 28.4x, placing the current valuation at the 60th percentile of its historical range.
Compared to the Healthcare sector median P/E of 23.7x, REGN trades at a 20% discount to its sector peers. The sector includes 224 companies with P/E ratios ranging from 0.0x to 184.4x.
The PEG ratio of 2.98 (P/E divided by 8% EPS growth) suggests the stock may be expensive relative to its earnings growth. Peter Lynch popularized the rule that a PEG below 1.0 indicates an attractive entry point.
Relative to the broader market, REGN trades at a notable discount to the S&P 500 median P/E of 26.2x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our REGN DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
Peer Comparison
P/E metrics vs. Drug Discovery and Antibody Platforms peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
REGNRegeneron Pharmaceuticals, Inc. | $108B | 18.8 | 2.98Best | +8% |
CTMXCytomX Therapeutics, Inc. | $430M | 14.1 | - | - |
PRTCPureTech Health plc | $405M | 8.4Lowest | - | +183%Best |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
Historical P/E Data
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2025 Q4 | Wed Dec 31 2025 00:00:00 GM | $771.87 | $41.56 | 18.6x | -53% |
| FY2025 Q3 | $562.27 | $41.76 | 13.5x | -66% | |
| FY2025 Q2 | Mon Jun 30 2025 00:00:00 GM | $525.00 | $39.68 | 13.2x | -67% |
| FY2025 Q1 | Mon Mar 31 2025 00:00:00 GM | $634.23 | $39.28 | 16.1x | -59% |
| FY2024 Q4 | $712.33 | $38.28 | 18.6x | -53% | |
| FY2024 Q3 | Mon Sep 30 2024 00:00:00 GM | $1051.24 | $40.41 | 26.0x | -34% |
| FY2024 Q2 | Sun Jun 30 2024 00:00:00 GM | $1051.03 | $37.76 | 27.8x | -30% |
| FY2024 Q1 | Sun Mar 31 2024 00:00:00 GM | $962.49 | $33.85 | 28.4x | -28% |
| FY2023 Q4 | Sun Dec 31 2023 00:00:00 GM | $878.29 | $34.75 | 25.3x | -36% |
| FY2023 Q3 | Sat Sep 30 2023 00:00:00 GM | $822.96 | $35.06 | 23.5x | -41% |
| FY2023 Q2 | Fri Jun 30 2023 00:00:00 GM | $718.54 | $37.83 | 19.0x | -52% |
| FY2023 Q1 | Fri Mar 31 2023 00:00:00 GM | $821.67 | $36.80 | 22.3x | -44% |
Average P/E for displayed period: 39.6x
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Start ComparisonFrequently Asked Questions
Is REGN stock overvalued or undervalued?
REGN trades at 18.8x P/E, near its 5-year average of 17.5x. The 60th percentile ranking places valuation within normal historical bounds.
How does REGN's valuation compare to peers?
Regeneron Pharmaceuticals, Inc. P/E of 18.8x compares to sector median of 23.7x. The discount suggests lower growth expectations or higher risk.
What is REGN's PEG ratio?
REGN PEG ratio is 2.98. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 2004-2025.