Spinnaker ETF Series (KOOL) Performance
KOOL total return
Distributions reinvested · as of Oct 23, 2026- YTD
- +13.3% since Dec 31, 2025
- 1 year
- +13.5% total return
- Since first price
- +45.6% since 2024
KOOL trailing returns vs SPY, QQQ, AGG
| Period | KOOL total return | Price only | S&P 500 (SPY) | Nasdaq-100 (QQQ) | U.S. bonds (AGG) |
|---|---|---|---|---|---|
| 1 month | −2.1% | −2.2% | −1.0% | −5.0% | +0.9% |
| 3 months | +1.2% | +1.1% | +3.2% | +1.9% | −0.4% |
| 6 months | +1.3% | +1.1% | +7.8% | +8.4% | −1.5% |
| YTD | +13.3% | +13.0% | +12.3% | +15.1% | −1.0% |
| 1 year | +13.5% | +12.9% | +14.4% | +15.9% | −1.1% |
| Since inceptionApr 2, 2024 | +45.6% | +43.8% | — | — | — |
Total return from adjusted closes (distributions reinvested, before tax). Periods of 3 years or more are also shown annualized. Price only excludes distributions.
Growth of $10,000: KOOL vs SPY
From Apr 2, 2024: KOOL grew to $14,563, SPY to $15,080.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
KOOL returns by calendar year
1 of 1 full years positive. Best 2025 (+16.1%), worst 2025 (+16.1%). 2026 is year to date.
KOOL annual returns table
| Year | KOOL | Largest drop | SPY | QQQ | AGG |
|---|---|---|---|---|---|
| 2026YTD | +13.3% | −7.2% | +12.3% | +15.1% | −1.0% |
| 2025 | +16.1% | −19.7% | +17.7% | +20.8% | +7.2% |
Largest drop = deepest fall from a high within that calendar year.
Calendar-year return vs largest drop within the year
Most years include a sizable fall at some point even when the year ends higher.
KOOL largest drawdowns
Now 4.4% below the high| Peak | Decline | Bottom | Recovered | Fall | Underwater |
|---|---|---|---|---|---|
| Dec 5, 2024 | −20.5% | Apr 8, 2025 | Jun 24, 2025 | 4 months | 7 months |
Declines from a closing high (distributions reinvested) of 10% or more. Underwater = time from the peak until the old high was regained.
KOOL risk statistics
| Statistic | Since 2024 |
|---|---|
| Annualized return | +19.3% |
| Volatility (annualized) | 12.2% |
| Sharpe ratio | 1.18 |
| Sortino ratio | 2.62 |
| Best month | +10.9% |
| Worst month | −5.0% |
| Best 12 months | +41.6% |
| Worst 12 months | +6.7% |
| Positive months | 62% |
| Beta vs S&P 500 | — |
| Correlation with S&P 500 | — |
From monthly total returns. Sharpe and Sortino use 1–3 month T-bills (BIL) as the risk-free rate, so they need history from 2007 on.
KOOL rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 19 | +6.7% | +18.4% | +41.6% | 100% |
Every holding period starting at a month-end since 2024. Returns for 3 years and longer are annualized.
KOOL performance overview
Spinnaker ETF Series (KOOL) returned +13.5% over the past year, with distributions reinvested. Since its first recorded price on Apr 2, 2024 it has returned +45.6%. Over the same year S&P 500 (SPY) returned +14.4%.
The deepest decline was −20.5%, from Dec 5, 2024 to Apr 8, 2025, and it took 3 months to get back to the old high. Volatility has been 12.2% a year.
Related: KOOL chart, KOOL holdings, KOOL dividends, KOOL valuation. See the KOOL overview for the latest quote and fund facts.
KOOL performance FAQ
What is the KOOL return over the past year?
KOOL returned +13.5% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it rose 12.9%.
How much would $10,000 invested in KOOL be worth?
$10,000 invested in KOOL at its first recorded close on April 2, 2024 would be worth about $14,563 on October 23, 2026 with distributions reinvested.
What is the biggest drawdown of KOOL?
The largest peak-to-trough decline was −20.5% between December 5, 2024 and April 8, 2025. It recovered to the old high on June 24, 2025, 3 months after the bottom.
How volatile is KOOL?
Over the past history KOOL had an annualized volatility of 12.2% and a Sharpe ratio of 1.18 (excess return over 1–3 month T-bills per unit of risk).