Glaukos Corporation (GKOS) P/E Ratio History
Deep ValueTrading at -39.8x · 0th percentile of 5-year range · Significant discount to historical valuation · Data 2016–2019
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P/E Ratio Analysis
As of June 21, 2026, Glaukos Corporation (GKOS) trades at a price-to-earnings ratio of -39.8x, with a stock price of $130.68 and trailing twelve-month earnings per share of $-3.26.
The current P/E is 109% below its 5-year average of 428.2x. Over the past five years, GKOS's P/E has ranged from a low of 207.2x to a high of 776.5x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Healthcare sector median P/E of 22.1x, GKOS trades at a 280% discount to its sector peers. The sector includes 234 companies with P/E ratios ranging from 0.0x to 197.0x.
Relative to the broader market, GKOS 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 GKOS 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.
GKOS Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
GKOS P/E vs Peers
Vision, dental, and ENT devices peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $1B | 8.7Lowest | - | +179%Best | |
| $50B | 47.7 | 6.74Best | -74% | |
| $13B | 32.2 | - | +1% | |
| $17B | 30.5 | - | -25% | |
| $7B | 30.5 | - | -22% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
GKOS Historical P/E Data (2016–2019)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2019 Q4 | - | $54.47 | $0.26 | 207.2x | -52% |
| FY2017 Q1 | Mar 31 2017 | $51.30 | $0.11 | 451.6x | +5% |
| FY2016 Q4 | Dec 31 2016 | $34.30 | $0.12 | 277.5x | -35% |
| FY2016 Q3 | Sep 30 2016 | $37.74 | $0.05 | 776.5x | +81% |
Average P/E for displayed period: 428.2x
Intrinsic Valuation
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Historical Returns
10+ years return with dividends reinvested.
DCA Calculator
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Peer Comparison
Compare growth, multiples, and margins vs sector.
GKOS — Frequently Asked Questions
Quick answers to the most common questions about buying GKOS stock.
What is GKOS's P/E ratio?
Glaukos Corporation (GKOS) trailing twelve-month P/E ratio is -39.8x, based on TTM diluted EPS of $-3.26. The 5-year average P/E is 428.2x and the historical range spans 207.2x to 776.5x.
Is GKOS stock overvalued or undervalued?
GKOS trades at -39.8x P/E, below its 5-year average of 428.2x. At the 0th percentile of its historical range (207.2x–776.5x), the stock is priced at a discount to its own history.
Is GKOS stock expensive?
No, GKOS is not expensive on a historical basis. The current P/E of -39.8x is below the 5-year average of 428.2x and sits at the 0th percentile of its valuation range.
What is GKOS's historical P/E range?
Over the past 5 years, GKOS's P/E ratio has ranged from 207.2x to 776.5x, with a median of 451.6x and an average of 428.2x. The current P/E of -39.8x places the stock at the 0th percentile of this range. Full historical data spans 2016–2019.
How does GKOS's P/E compare to the S&P 500?
GKOS trades at -39.8x P/E versus the S&P 500 median of 24.4x. The 263% discount to the market suggests lower growth expectations or perceived higher risk.
How does GKOS's valuation compare to Healthcare peers?
Glaukos Corporation P/E of -39.8x 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 GKOS's PEG ratio?
GKOS PEG ratio is N/A, based on a P/E of -39.8x and EPS growth of -18.4%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is GKOS's earnings yield?
GKOS earnings yield is N/A, the inverse of its -39.8x 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.