Allegro MicroSystems, Inc. (ALGM) P/E Ratio History
Deep ValueTrading at -702.6x · 0th percentile of 5-year range · Significant discount to historical valuation · Data 2021–2025
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P/E Ratio Analysis
As of July 7, 2026, Allegro MicroSystems, Inc. (ALGM) trades at a price-to-earnings ratio of -702.6x, with a stock price of $56.56 and trailing twelve-month earnings per share of $-0.08.
The current P/E is 991% below its 5-year average of 78.9x. Over the past five years, ALGM's P/E has ranged from a low of 24.6x to a high of 267.7x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Technology sector median P/E of 29.6x, ALGM trades at a 2470% discount to its sector peers. The sector includes 358 companies with P/E ratios ranging from 0.0x to 194.0x.
Relative to the broader market, ALGM trades at a notable discount to the S&P 500 median P/E of 25.6x. 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 ALGM 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.
ALGM Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
ALGM P/E vs Peers
Sensors and Imaging Semiconductors peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $66B | 105.6 | 3.58 | -65% | |
| $4B | 68.3 | - | +51%Best | |
| $4B | 187.3 | - | -30% | |
| $276B | 55.7 | - | +5% | |
| $189B | 85.3 | 12.52 | +39% | |
| $47B | 336.9 | - | - | |
| $10B | 21.4Lowest | - | -17% | |
| $71B | 35.3 | 0.31Best | -18% | |
| $1.6T | 388.7 | 10.03 | -47% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
ALGM Historical P/E Data (2021–2025)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2025 Q1 | Jun 28 2024 | $28.24 | $0.38 | 74.0x | -6% |
| FY2024 Q4 | Mar 29 2024 | $26.96 | $0.78 | 34.4x | -56% |
| FY2024 Q3 | Dec 29 2023 | $30.27 | $1.14 | 26.6x | -66% |
| FY2024 Q2 | Sep 29 2023 | $31.94 | $1.30 | 24.6x | -69% |
| FY2024 Q1 | Jun 30 2023 | $45.14 | $1.22 | 37.0x | -53% |
| FY2023 Q4 | Mar 31 2023 | $47.99 | $0.96 | 49.8x | -37% |
| FY2023 Q3 | Dec 23 2022 | $30.24 | $0.77 | 39.1x | -50% |
| FY2023 Q2 | Sep 23 2022 | $21.60 | $0.61 | 35.2x | -55% |
| FY2023 Q1 | Jun 24 2022 | $21.43 | $0.52 | 41.0x | -48% |
| FY2022 Q4 | - | $28.40 | $0.61 | 46.6x | -41% |
| FY2022 Q3 | Dec 24 2021 | $34.49 | $0.53 | 65.7x | -17% |
| FY2022 Q2 | Sep 24 2021 | $34.44 | $0.33 | 104.9x | +33% |
| FY2022 Q1 | Jun 25 2021 | $27.32 | $0.21 | 130.7x | +66% |
| FY2021 Q4 | Mar 31 2021 | $25.35 | $0.09 | 267.7x | +239% |
| FY2021 Q3 | Dec 25 2020 | $24.79 | $0.12 | 205.7x | +161% |
Average P/E for displayed period: 78.9x
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
5+ years return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
ALGM — Frequently Asked Questions
Quick answers to the most common questions about buying ALGM stock.
What is ALGM's P/E ratio?
Allegro MicroSystems, Inc. (ALGM) trailing twelve-month P/E ratio is -702.6x, based on TTM diluted EPS of $-0.08. The 5-year average P/E is 78.9x and the historical range spans 24.6x to 267.7x.
Is ALGM stock overvalued or undervalued?
ALGM trades at -702.6x P/E, below its 5-year average of 78.9x. At the 0th percentile of its historical range (24.6x–267.7x), the stock is priced at a discount to its own history.
Is ALGM stock expensive?
No, ALGM is not expensive on a historical basis. The current P/E of -702.6x is below the 5-year average of 78.9x and sits at the 0th percentile of its valuation range.
What is ALGM's historical P/E range?
Over the past 5 years, ALGM's P/E ratio has ranged from 24.6x to 267.7x, with a median of 46.6x and an average of 78.9x. The current P/E of -702.6x places the stock at the 0th percentile of this range. Full historical data spans 2021–2025.
How does ALGM's P/E compare to the S&P 500?
ALGM trades at -702.6x P/E versus the S&P 500 median of 25.6x. The 2845% discount to the market suggests lower growth expectations or perceived higher risk.
How does ALGM's valuation compare to Technology peers?
Allegro MicroSystems, Inc. P/E of -702.6x compares to the Technology sector median of 29.6x. 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 ALGM's PEG ratio?
ALGM PEG ratio is N/A, based on a P/E of -702.6x and EPS growth of 79.4%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is ALGM's earnings yield?
ALGM earnings yield is N/A, the inverse of its -702.6x 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.