SharesGrow 7-Criteria Score
All 7 criteria scored · valuation-related highlighted on this page
Proto Corporation (PTOVF) trades at a trailing P/E of 0.1, forward P/E of 0.1. Trailing earnings yield is 1,250.00%, forward earnings yield 1,666.67%. PEG 0.04 (Peter Lynch undervalued ≤1.0).
Criteria proven by this page:
- VALUE (100/100, Pass) — P/E is below market average (0.1); PEG ≤ 1.0 — Peter Lynch undervalued (0.04); earnings yield beats bond yields (1,250.00%).
- Forward P/E 0.1 (down from trailing 0.1) — analysts expect earnings to grow, which would improve the valuation.
- PEG Ratio 0.04 — below 1.0 suggests the stock is undervalued relative to its earnings growth rate (Peter Lynch criterion).
- Trailing Earnings Yield 1,250.00% — exceeds typical bond yields (~4.3%), making equity attractive vs fixed income. Forward yield improves to 1,666.67% as earnings recover.
Overall SharesGrow Score: 68/100 with 3/7 criteria passed.
SharesGrow 7-Criteria Score
✓
VALUE
100/100
Price-to-Earnings & upside
Proven by this page
✓
HEALTH
100/100
Debt-to-Equity & liquidity
→ Health
Valuation Snapshot — PTOVF
Valuation Multiples
P/E (TTM)0.1
Forward P/E0.1
PEG Ratio0.04
Forward PEG0.04
P/B Ratio0.00
P/S Ratio0.00
EV/EBITDA0.0
Per Share Data
EPS (TTM)$121.90
Forward EPS (Est.)$169.40
Book Value / Share$0.00
Revenue / Share$3,010.84
FCF / Share$0.00
Yields & Fair Value
Earnings Yield1,250.00%
Forward Earnings Yield1,666.67%
Dividend Yield0.00%
P/E Ratio & Earnings Yield
Earnings Per Share (EPS) History
| Year |
EPS (Diluted) |
Revenue |
Net Income |
Net Margin |
| 2015 |
$-19.28 |
$54.31B |
$-390.41M |
-0.7% |
| 2016 |
$75.02 |
$56.73B |
$1.51B |
2.7% |
| 2017 |
$12.95 |
$62.11B |
$519.3M |
0.8% |
| 2018 |
$78.76 |
$62.29B |
$3.16B |
5.1% |
| 2019 |
$124.33 |
$59.15B |
$4.99B |
8.4% |
| 2020 |
$120.84 |
$60.11B |
$4.85B |
8.1% |
| 2021 |
$146.34 |
$57.45B |
$5.88B |
10.2% |
| 2022 |
$110.03 |
$105.6B |
$4.42B |
4.2% |
| 2023 |
$135.94 |
$115.55B |
$5.47B |
4.7% |
| 2025 |
$121.90 |
$121.33B |
$4.91B |
4% |
