TNDM vs. IYW
TNDM (Tandem Diabetes Care, Inc.) is a stock, while IYW (iShares U.S. Technology ETF) is Technology Equities fund tracking the Russell 1000 Technology RIC 22.5/45 Capped Index. Over the past 10 years, TNDM returned -10.99%/yr vs 24.38%/yr for IYW. Their 0.31 correlation means their historical movements had little consistent relationship.
Performance
TNDM vs. IYW - Performance Comparison
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Returns By Period
In the year-to-date period, TNDM achieves a -11.28% return, which is significantly lower than IYW's 19.29% return. Over the past 10 years, TNDM has underperformed IYW with an annualized return of -10.99%, while IYW has yielded a comparatively higher 24.38% annualized return.
TNDM
- 1D
- 2.58%
- 1M
- 27.28%
- 6M
- -1.96%
- YTD
- -11.28%
- 1Y
- 26.62%
- 3Y*
- -15.44%
- 5Y*
- -29.08%
- 10Y*
- -10.99%
- ALL TIME*
- -16.57%
IYW
- 1D
- 0.46%
- 1M
- -2.23%
- 6M
- 20.08%
- YTD
- 19.29%
- 1Y
- 34.47%
- 3Y*
- 28.25%
- 5Y*
- 18.55%
- 10Y*
- 24.38%
- ALL TIME*
- 9.16%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $125.49M | $126.55M | $189.91M | |
| $30.05M | $27.81M | $39.07M |
TNDM vs. IYW - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TNDM Tandem Diabetes Care, Inc. | -11.28% | -38.98% | 21.77% | -34.19% | -70.14% | 57.32% | 60.51% | 56.99% | 1,508.90% | -89.02% |
IYW iShares U.S. Technology ETF | 19.29% | 25.38% | 30.25% | 65.44% | -34.83% | 35.44% | 47.45% | 46.64% | -0.93% | 36.60% |
Correlation
The correlation between TNDM and IYW is 0.06, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.06 |
Correlation (3Y) Balances recent behavior with more history. | 0.19 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.32 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.33 |
Correlation (All Time) Calculated using the full available price history since Nov 14, 2013 | 0.31 |
Over the past year, the correlation between TNDM and IYW has dropped to 0.06 - well below their long-term average of 0.31, suggesting their price drivers have been diverging.
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Return for Risk
TNDM vs. IYW — Risk / Return Rank
TNDM
IYW
TNDM vs. IYW - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Tandem Diabetes Care, Inc. (TNDM) and iShares U.S. Technology ETF (IYW). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| TNDM | IYW | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.01 | ||
| Sortino ratioReturn per unit of downside risk | -0.75 | ||
| Omega ratioGain probability vs. loss probability | 1.13 | 1.23 | -0.10 |
| Calmar ratioReturn relative to maximum drawdown | 0.46 | 1.77 | -1.31 |
| Martin ratioReturn relative to average drawdown | 0.97 | 5.23 | -4.26 |
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Drawdowns
TNDM vs. IYW - Drawdown Comparison
The maximum TNDM drawdown since its inception was -99.25%, which is greater than IYW's maximum drawdown of -81.90%. Use the drawdown chart below to compare losses from any high point for TNDM and IYW.
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Drawdown Indicators
| TNDM | IYW | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.25% | -81.90% | -17.35% |
Max Drawdown (1Y)Largest decline over 1 year | -54.64% | -17.81% | -36.83% |
Max Drawdown (3Y)Largest decline over 3 years | -81.07% | -26.47% | -54.60% |
Max Drawdown (5Y)Largest decline over 5 years | -93.40% | -39.44% | -53.96% |
Max Drawdown (10Y)Largest decline over 10 years | -97.44% | -39.44% | -58.00% |
Current DrawdownCurrent decline from peak | -93.50% | -8.40% | -85.10% |
Average DrawdownAverage peak-to-trough decline | -77.37% | -34.48% | -42.89% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 26.18% | 6.03% | +20.15% |
Volatility
TNDM vs. IYW - Volatility Comparison
Tandem Diabetes Care, Inc. (TNDM) has a higher volatility of 14.81% compared to iShares U.S. Technology ETF (IYW) at 7.86%. This indicates that TNDM's price experiences larger fluctuations and is considered to be riskier than IYW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TNDM | IYW | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 14.81% | 7.86% | +6.95% |
Volatility (6M)Calculated over the trailing 6-month period | 59.01% | 19.90% | +39.11% |
Volatility (1Y)Calculated over the trailing 1-year period | 79.74% | 23.79% | +55.95% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 68.28% | 26.47% | +41.81% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 77.77% | 25.36% | +52.41% |
Dividends
TNDM vs. IYW - Dividend Comparison
TNDM has not paid dividends to shareholders, while IYW's dividend yield for the trailing twelve months is around 0.11%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IYW iShares U.S. Technology ETF | 0.11% | 0.14% | 0.21% | 0.34% | 0.50% | 0.31% | 0.56% | 0.72% | 0.92% | 0.82% | 1.14% | 1.12% |
TNDM Tandem Diabetes Care, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
TNDM and IYW have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
TNDM has higher volatility (14.81%) compared to IYW (7.86%). In terms of maximum drawdown, TNDM dropped -99.25% vs IYW's -81.90%.
IYW currently has the higher Sharpe Ratio (1.33 vs 0.32), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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