Tandem Diabetes Care, Inc. (TNDM) P/E Ratio History
Deep ValueTrading at -5.0x · 0th percentile of 5-year range · Significant discount to historical valuation · Data 2021–2022
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P/E Ratio Analysis
As of June 21, 2026, Tandem Diabetes Care, Inc. (TNDM) trades at a price-to-earnings ratio of -5.0x, with a stock price of $15.30 and trailing twelve-month earnings per share of $-1.38.
The current P/E is 100% below its 5-year average of 1125.7x. Over the past five years, TNDM's P/E has ranged from a low of 412.8x to a high of 1979.7x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Healthcare sector median P/E of 22.1x, TNDM trades at a 123% 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, TNDM 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 TNDM 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.
TNDM Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
TNDM P/E vs Peers
Diabetes care and insulin delivery peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $10B | 41.9 | 0.41 | -40% | |
| $28B | 34.7 | 3.31 | +47% | |
| $383B | 91.4 | - | -1% | |
| $102B | 22.0 | - | +31% | |
| $192B | 12.2 | 0.59 | +2% | |
| $1.0T | 47.8 | 1.66 | +96% | |
| $2B | 6.8Lowest | 0.66 | +817%Best | |
| $154B | 11.6 | 0.39Best | +134% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
TNDM Historical P/E Data (2021–2022)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2022 Q1 | - | $116.29 | $0.08 | 1453.6x | +29% |
| FY2021 Q4 | Dec 31 2021 | $150.52 | $0.23 | 656.7x | -42% |
| FY2021 Q3 | - | $119.38 | $0.29 | 412.8x | -63% |
| FY2021 Q2 | Jun 30 2021 | $97.40 | $0.05 | 1979.7x | +76% |
Average P/E for displayed period: 1125.7x
Intrinsic Valuation
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Historical Returns
5+ years return with dividends reinvested.
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Peer Comparison
Compare growth, multiples, and margins vs sector.
TNDM — Frequently Asked Questions
Quick answers to the most common questions about buying TNDM stock.
What is TNDM's P/E ratio?
Tandem Diabetes Care, Inc. (TNDM) trailing twelve-month P/E ratio is -5.0x, based on TTM diluted EPS of $-1.38. The 5-year average P/E is 1125.7x and the historical range spans 412.8x to 1979.7x.
Is TNDM stock overvalued or undervalued?
TNDM trades at -5.0x P/E, below its 5-year average of 1125.7x. At the 0th percentile of its historical range (412.8x–1979.7x), the stock is priced at a discount to its own history.
Is TNDM stock expensive?
No, TNDM is not expensive on a historical basis. The current P/E of -5.0x is below the 5-year average of 1125.7x and sits at the 0th percentile of its valuation range.
What is TNDM's historical P/E range?
Over the past 5 years, TNDM's P/E ratio has ranged from 412.8x to 1979.7x, with a median of 1453.6x and an average of 1125.7x. The current P/E of -5.0x places the stock at the 0th percentile of this range. Full historical data spans 2021–2022.
How does TNDM's P/E compare to the S&P 500?
TNDM trades at -5.0x P/E versus the S&P 500 median of 24.4x. The 120% discount to the market suggests lower growth expectations or perceived higher risk.
How does TNDM's valuation compare to Healthcare peers?
Tandem Diabetes Care, Inc. P/E of -5.0x 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 TNDM's PEG ratio?
TNDM PEG ratio is N/A, based on a P/E of -5.0x and EPS growth of -106.8%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is TNDM's earnings yield?
TNDM earnings yield is N/A, the inverse of its -5.0x 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.