Regeneron Pharmaceuticals, Inc. (REGN) P/E Ratio History
UndervaluedTrading at 14.7x vs 5Y avg 17.7x · 40th percentile · Below historical baseline · Data 2004–2026
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P/E Ratio Analysis
As of June 21, 2026, Regeneron Pharmaceuticals, Inc. (REGN) trades at a price-to-earnings ratio of 14.7x, with a stock price of $609.94 and trailing twelve-month earnings per share of $41.07.
The current P/E is 17% below its 5-year average of 17.7x. 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 40th percentile of its historical range.
Compared to the Healthcare sector median P/E of 22.1x, REGN trades at a 34% discount to its sector peers. The sector includes 234 companies with P/E ratios ranging from 0.0x to 197.0x.
The PEG ratio of 2.32 (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 24.4x. 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.
REGN Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
REGN P/E vs Peers
Drug Discovery and Antibody Platforms peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $29B | 22.3 | - | -21% | |
| $115B | 29.5 | 3.56 | +837% | |
| $20B | 15.3Lowest | - | +4173%Best | |
| $11B | 30.4 | - | -19% | |
| $383B | 91.4 | - | -1% | |
| $1.0T | 47.8 | 1.66 | +96% | |
| $182B | 23.7 | 8.07 | +88% | |
| $154B | 18.3 | 0.14Best | +1684% | |
| $281B | 15.6 | 0.74 | +8% | |
| $143B | 18.5 | - | -4% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
REGN Historical P/E Data (2004–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q1 | - | $772.64 | $41.04 | 18.8x | -52% |
| FY2025 Q4 | Dec 31 2025 | $771.87 | $41.56 | 18.6x | -53% |
| FY2025 Q3 | - | $562.27 | $41.76 | 13.5x | -66% |
| FY2025 Q2 | Jun 30 2025 | $525.00 | $39.68 | 13.2x | -66% |
| FY2025 Q1 | Mar 31 2025 | $634.23 | $39.28 | 16.1x | -59% |
| FY2024 Q4 | - | $712.33 | $38.28 | 18.6x | -53% |
| FY2024 Q3 | Sep 30 2024 | $1051.24 | $40.41 | 26.0x | -34% |
| FY2024 Q2 | Jun 30 2024 | $1051.03 | $37.76 | 27.8x | -29% |
| FY2024 Q1 | Mar 31 2024 | $962.49 | $33.85 | 28.4x | -28% |
| FY2023 Q4 | Dec 31 2023 | $878.29 | $34.75 | 25.3x | -36% |
| FY2023 Q3 | Sep 30 2023 | $822.96 | $35.06 | 23.5x | -40% |
| FY2023 Q2 | Jun 30 2023 | $718.54 | $37.83 | 19.0x | -52% |
| FY2023 Q1 | Mar 31 2023 | $821.67 | $36.80 | 22.3x | -43% |
| FY2022 Q4 | Dec 31 2022 | $721.49 | $38.24 | 18.9x | -52% |
| FY2022 Q3 | Sep 30 2022 | $688.87 | $47.43 | 14.5x | -63% |
| FY2022 Q2 | - | $591.13 | $50.10 | 11.8x | -70% |
| FY2022 Q1 | - | $698.42 | $70.60 | 9.9x | -75% |
| FY2021 Q4 | Dec 31 2021 | $631.52 | $72.08 | 8.8x | -78% |
| FY2021 Q3 | - | $605.18 | $62.63 | 9.7x | -75% |
| FY2021 Q2 | Jun 30 2021 | $558.54 | $55.69 | 10.0x | -74% |
| FY2021 Q1 | Mar 31 2021 | $473.14 | $35.33 | 13.4x | -66% |
| FY2020 Q4 | - | $483.11 | $30.67 | 15.8x | -60% |
| FY2020 Q3 | Sep 30 2020 | $559.78 | $27.36 | 20.5x | -48% |
| FY2020 Q2 | - | $623.65 | $25.83 | 24.1x | -39% |
| FY2020 Q1 | - | $488.29 | $19.90 | 24.5x | -38% |
| FY2019 Q4 | - | $375.48 | $18.46 | 20.3x | -48% |
| FY2019 Q3 | Sep 30 2019 | $277.40 | $18.68 | 14.9x | -62% |
| FY2019 Q2 | Jun 30 2019 | $313.00 | $17.99 | 17.4x | -56% |
| FY2019 Q1 | Mar 31 2019 | $410.62 | $21.13 | 19.4x | -51% |
| FY2018 Q4 | Dec 31 2018 | $373.50 | $21.30 | 17.5x | -55% |
| FY2018 Q3 | Sep 30 2018 | $404.04 | $15.64 | 25.8x | -34% |
| FY2018 Q2 | Jun 30 2018 | $344.99 | $13.79 | 25.0x | -36% |
| FY2018 Q1 | Mar 31 2018 | $344.36 | $12.31 | 28.0x | -29% |
| FY2017 Q4 | Dec 31 2017 | $375.96 | $10.31 | 36.5x | -7% |
| FY2017 Q3 | Sep 30 2017 | $447.12 | $11.01 | 40.6x | +3% |
| FY2017 Q2 | Jun 30 2017 | $491.14 | $9.96 | 49.3x | +26% |
| FY2017 Q1 | Mar 31 2017 | $387.51 | $8.31 | 46.6x | +19% |
| FY2016 Q4 | Dec 31 2016 | $367.09 | $7.74 | 47.4x | +21% |
| FY2016 Q3 | Sep 30 2016 | $402.02 | $6.89 | 58.3x | +49% |
| FY2016 Q2 | - | $349.23 | $6.44 | 54.2x | +38% |
| FY2016 Q1 | - | $360.44 | $6.44 | 56.0x | +43% |
| FY2015 Q4 | - | $542.87 | $5.51 | 98.5x | +151% |
| FY2015 Q3 | Sep 30 2015 | $465.14 | $4.96 | 93.8x | +139% |
| FY2015 Q2 | - | $510.13 | $3.87 | 131.8x | +236% |
| FY2015 Q1 | - | $451.48 | $3.03 | 149.0x | +280% |
| FY2014 Q4 | Dec 31 2014 | $410.25 | $2.98 | 137.7x | +251% |
| FY2014 Q3 | - | $360.52 | $2.92 | 123.5x | +214% |
| FY2014 Q2 | Jun 30 2014 | $282.47 | $3.44 | 82.1x | +109% |
| FY2014 Q1 | Mar 31 2014 | $300.28 | $3.38 | 88.8x | +126% |
| FY2013 Q4 | - | $275.24 | $3.67 | 75.0x | +91% |
| FY2013 Q3 | Sep 30 2013 | $312.87 | $7.20 | 43.5x | +11% |
| FY2013 Q2 | Jun 30 2013 | $224.88 | $7.67 | 29.3x | -25% |
| FY2013 Q1 | Mar 31 2013 | $176.40 | $7.58 | 23.3x | -41% |
| FY2012 Q4 | Dec 31 2012 | $171.07 | $6.79 | 25.2x | -36% |
| FY2012 Q3 | Sep 30 2012 | $152.66 | $1.96 | 77.9x | +98% |
| FY2004 Q4 | Dec 31 2004 | $9.21 | $0.68 | 13.5x | -66% |
| FY2004 Q3 | - | $8.68 | $0.25 | 34.7x | -12% |
Average P/E for displayed period: 39.3x
Full Stock Analysis
Deep dive into REGN consensus models and risk factors.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
22+ years return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
REGN — Frequently Asked Questions
Quick answers to the most common questions about buying REGN stock.
What is REGN's P/E ratio?
Regeneron Pharmaceuticals, Inc. (REGN) trailing twelve-month P/E ratio is 14.7x, based on TTM diluted EPS of $41.07. The 5-year average P/E is 17.7x and the historical range spans 8.8x to 28.4x.
Is REGN stock overvalued or undervalued?
REGN trades at 14.7x P/E, near its 5-year average of 17.7x. The 40th percentile ranking within the 8.8x–28.4x historical range places valuation within normal bounds.
Is REGN stock expensive?
REGN is fairly valued relative to its own history. The current P/E of 14.7x is near the 5-year average of 17.7x (40th percentile of historical range).
What is REGN's historical P/E range?
Over the past 5 years, REGN's P/E ratio has ranged from 8.8x to 28.4x, with a median of 18.6x and an average of 17.7x. The current P/E of 14.7x places the stock at the 40th percentile of this range. Full historical data spans 2004–2026.
How does REGN's P/E compare to the S&P 500?
REGN trades at 14.7x P/E versus the S&P 500 median of 24.4x. The 40% discount to the market suggests lower growth expectations or perceived higher risk.
How does REGN's valuation compare to Healthcare peers?
Regeneron Pharmaceuticals, Inc. P/E of 14.7x compares to the Healthcare sector median of 22.1x. The discount suggests lower growth expectations, weaker margins, or higher perceived risk relative to peers. See the peer comparison table on this page for ticker-by-ticker P/E and PEG.
What is REGN's PEG ratio?
REGN PEG ratio is 2.32, based on a P/E of 14.7x and EPS growth of 8.2%. A PEG above 2.0 indicates a premium valuation relative to earnings growth — typically considered expensive.
What is REGN's earnings yield?
REGN earnings yield is 6.80%, the inverse of its 14.7x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.