Glaukos Corporation (GKOS) P/E Ratio History
Historical price-to-earnings valuation from 2016 to 2019
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GKOS Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 6, 2026, Glaukos Corporation (GKOS) trades at a price-to-earnings ratio of -41.2x, with a stock price of $135.27 and trailing twelve-month earnings per share of $-3.26.
The current P/E is 110% 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 286% discount to its sector peers. The sector includes 242 companies with P/E ratios ranging from 0.0x to 178.0x.
Relative to the broader market, GKOS trades at a notable discount to the S&P 500 median P/E of 25.2x. 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 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 P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $1B | 9.3Lowest | - | +179%Best | |
| $48B | 45.5 | 6.42Best | -74% | |
| $12B | 30.8 | - | +1% | |
| $17B | 30.5 | - | -25% | |
| $6B | 25.3 | - | -22% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
GKOS Historical P/E Data (2016–2019)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2019 Q4 | $54.47 | $0.26 | 207.2x | -52% | |
| FY2017 Q1 | Fri Mar 31 2017 00:00:00 GM | $51.30 | $0.11 | 451.6x | +5% |
| FY2016 Q4 | Sat Dec 31 2016 00:00:00 GM | $34.30 | $0.12 | 277.5x | -35% |
| FY2016 Q3 | Fri Sep 30 2016 00:00:00 GM | $37.74 | $0.05 | 776.5x | +81% |
Average P/E for displayed period: 428.2x
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Start ComparisonGKOS — Frequently Asked Questions
Quick answers to the most common questions about buying GKOS stock.
Is GKOS stock overvalued or undervalued?
GKOS trades at -41.2x P/E, below its 5-year average of 428.2x. At the N/A percentile of historical range, the stock is priced at a discount to its own history.
How does GKOS's valuation compare to peers?
Glaukos Corporation P/E of -41.2x compares to sector median of 22.1x. The discount suggests lower growth expectations or higher risk.
What is GKOS's PEG ratio?
GKOS PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 2016-2019.