Applied Optoelectronics, Inc. (AAOI) P/E Ratio History
Historical price-to-earnings valuation from 2014 to 2018
Loading P/E history...
AAOI Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 8, 2026, Applied Optoelectronics, Inc. (AAOI) trades at a price-to-earnings ratio of -246.2x, with a stock price of $157.55 and trailing twelve-month earnings per share of $-0.57.
The current P/E is 730% below its 5-year average of 39.1x. Over the past five years, AAOI's P/E has ranged from a low of 9.0x to a high of 178.5x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Technology sector median P/E of 27.7x, AAOI trades at a 990% discount to its sector peers. The sector includes 359 companies with P/E ratios ranging from 0.0x to 184.2x.
Relative to the broader market, AAOI trades at a notable discount to the S&P 500 median P/E of 25.1x. 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 AAOI 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.
AAOI P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $64B | 2412.9 | - | +105% | |
| $12B | 340.3 | 74.57 | +225% | |
| $76B | 633.2 | - | +47% | |
| $3B | 167.4 | - | +158% | |
| $365B | 36.1Lowest | - | +0% | |
| $178B | 51.5 | 1.27Best | +23% | |
| $2.0T | 86.5 | 1.73 | +288%Best |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
AAOI Historical P/E Data (2014–2018)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2018 Q3 | Sun Sep 30 2018 00:00:00 GM | $24.66 | $0.60 | 41.1x | +5% |
| FY2018 Q2 | Sat Jun 30 2018 00:00:00 GM | $44.90 | $1.74 | 25.8x | -34% |
| FY2018 Q1 | Sat Mar 31 2018 00:00:00 GM | $25.06 | $2.77 | 9.0x | -77% |
| FY2017 Q4 | Sun Dec 31 2017 00:00:00 GM | $37.82 | $3.66 | 10.3x | -74% |
| FY2017 Q3 | Sat Sep 30 2017 00:00:00 GM | $64.67 | $4.15 | 15.6x | -60% |
| FY2017 Q2 | Fri Jun 30 2017 00:00:00 GM | $61.79 | $4.17 | 14.8x | -62% |
| FY2017 Q1 | Fri Mar 31 2017 00:00:00 GM | $56.15 | $2.77 | 20.3x | -48% |
| FY2016 Q4 | Sat Dec 31 2016 00:00:00 GM | $23.44 | $1.69 | 13.9x | -64% |
| FY2016 Q3 | Fri Sep 30 2016 00:00:00 GM | $22.21 | $1.07 | 20.8x | -47% |
| FY2016 Q2 | $11.15 | $0.26 | 42.9x | +10% | |
| FY2016 Q1 | $14.91 | $0.61 | 24.4x | -37% | |
| FY2015 Q4 | $17.16 | $0.64 | 26.8x | -31% |
Average P/E for displayed period: 39.1x
Full AAOI Stock Analysis
Analyst consensus, bull case, AI-generated risk factors, and peer comparison — all in one place.
See AAOI's True Return
Price is only half the story. See total return with reinvested dividends.
Launch CalculatorIs AAOI Undervalued?
DCF intrinsic value, peer multiples, and analyst estimates — see what the stock is really worth.
View ValuationCompare AAOI vs NVDA
Side-by-side business, growth, and profitability comparison vs NVIDIA Corporation.
Start ComparisonAAOI — Frequently Asked Questions
Quick answers to the most common questions about buying AAOI stock.
Is AAOI stock overvalued or undervalued?
AAOI trades at -246.2x P/E, below its 5-year average of 39.1x. At the N/A percentile of historical range, the stock is priced at a discount to its own history.
How does AAOI's valuation compare to peers?
Applied Optoelectronics, Inc. P/E of -246.2x compares to sector median of 27.7x. The discount suggests lower growth expectations or higher risk.
What is AAOI's PEG ratio?
AAOI PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 2014-2018.