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 -14.93%/yr vs 25.94%/yr for IYW. At a 0.32 correlation, their price movements are largely independent.
Performance
TNDM vs. IYW - Performance Comparison
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Returns By Period
In the year-to-date period, TNDM achieves a -34.44% return, which is significantly lower than IYW's 21.96% return. Over the past 10 years, TNDM has underperformed IYW with an annualized return of -14.93%, while IYW has yielded a comparatively higher 25.94% annualized return.
TNDM
- 1D
- 0.49%
- 1M
- -3.71%
- YTD
- -34.44%
- 6M
- -36.30%
- 1Y
- -28.73%
- 3Y*
- -16.79%
- 5Y*
- -31.60%
- 10Y*
- -14.93%
IYW
- 1D
- -3.91%
- 1M
- 0.69%
- YTD
- 21.96%
- 6M
- 20.43%
- 1Y
- 47.04%
- 3Y*
- 32.10%
- 5Y*
- 20.32%
- 10Y*
- 25.94%
TNDM vs. IYW - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TNDM Tandem Diabetes Care, Inc. | -34.44% | -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 | 21.96% | 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 0.11, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.11 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.22 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.34 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.35 |
Correlation (All Time) Calculated using the full available price history since Nov 14, 2013 | 0.32 |
Over the past year, the correlation between TNDM and IYW has dropped to 0.11 - well below their long-term average of 0.32, 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 | -2.48 | ||
| Sortino ratioReturn per unit of downside risk | -2.75 | ||
| Omega ratioGain probability vs. loss probability | 0.99 | 1.36 | -0.37 |
| Calmar ratioReturn relative to maximum drawdown | -0.53 | 2.65 | -3.18 |
| Martin ratioReturn relative to average drawdown | -1.02 | 8.46 | -9.48 |
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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 | -95.19% | -6.35% | -88.84% |
Average DrawdownAverage peak-to-trough decline | -77.22% | -34.59% | -42.63% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 28.28% | 5.57% | +22.71% |
Volatility
TNDM vs. IYW - Volatility Comparison
Tandem Diabetes Care, Inc. (TNDM) has a higher volatility of 25.64% compared to iShares U.S. Technology ETF (IYW) at 11.15%. 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 | 25.64% | 11.15% | +14.49% |
Volatility (6M)Calculated over the trailing 6-month period | 57.91% | 18.45% | +39.46% |
Volatility (1Y)Calculated over the trailing 1-year period | 79.55% | 22.34% | +57.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 67.95% | 26.24% | +41.71% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 77.88% | 25.26% | +52.62% |
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 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
TNDM has higher volatility (25.64%) compared to IYW (11.15%). In terms of maximum drawdown, TNDM dropped -99.25% vs IYW's -81.90%.
IYW currently has the higher Sharpe Ratio (2.12 vs -0.36), 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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