# SPY vs. XLK

## SPDR S&P 500 ETF Trust

**SPY**  
$773.26  
Today’s Change (Aug 8, 2026)  
— (—)

## Technology Select Sector SPDR Fund  
**XLK**  
$187.97  
Today’s Change (Aug 8, 2026)  
— (—)

## Correlation

### Compare with

Top 10 comparisons with SPY:

| Comparison          | Correlation  |
| --------------------|--------------|
| SPY                 | 1.00         |
| SSO                 | 1.00         |
| IVV                 | 1.00         |
| SPXL                | 1.00         |
| VOO                 | 1.00         |
| UPRO                | 1.00         |
| SPLG                | 1.00         |
| VV                  | 1.00         |
| SCHX                | 1.00         |
| ESGU                | 1.00         |
| IWB                 | 1.00         |

## Top 10 shared holdings

The top 10 holdings shared by SPY and XLK:  
- [AAPL\ Apple Inc](/content/etf-comparisons/etf/AAPL/index.html)  
- [MSFT\ Microsoft Corporation](/content/etf-comparisons/etf/MSFT/index.html)  
- [NVDA\ NVIDIA Corp](/content/etf-comparisons/etf/NVDA/index.html)

## Performance Measures

for the time period Jan 29, 1993 to Aug 7, 2026

| Measure                     | SPY | XLK | Diff. |
|-----------------------------|-----|-----|-------|
| 1M Trailing Return          | 3.4%| 4.9%| -1.5% |
| 3M Trailing Return          | 6.0%| 10.9%| -4.9% |
| Max Drawdown                | -55.2%| -82.1%| +26.9% |
| Standard Deviation          | 18.6%| 26.0%| -7.4% |
| Sharpe Ratio                | 0.65| 0.51| +0.14 |
| Calmar Ratio                | 0.20| 0.13| +0.07 |

## What is SPY?

The SPDR S&P 500 ETF is a fund that before expenses generally corresponds to the price and yield performance of the S&P 500 Index.

## What is XLK?

The Technology Select Sector SPDR Fund before expenses seeks to closely match the returns and characteristics of the Technology Select Sector Index (ticker: IXT).

## Snapshot

| Feature                          | SPY                            | XLK                            |
|----------------------------------|--------------------------------|--------------------------------|
| Inception date                   | Jan 22, 1993                  | Dec 16, 1998                  |
| Expense ratio                    | 0.09%                          | 0.1%                           |
| Type                             | US Equities                    | US Equities                    |
| Fund owner                       | State Street (SPDR)           | State Street (SPDR)           |
| Volume (1m avg. daily)          | $33,257,618,740                | $989,437,675                  |
| AUM                              | $400,404,126,565              | $47,537,945,579               |
| Associated index                 | S&P 500 Index                 | S&P Technology Select Sector Index |
| Inverse/Leveraged               | No                             | No                             |
| Passive/Active                   | Passive                        | Passive                        |
| Dividend                         | No                             | No                             |

## Trading Strategies Related to SPY

Happy Retirement! 4.0  
Category: Tactical rotation, trend and reversion, inverse-vol sizing, leveraged ETFs, sector rotation, managed futures signal, tail-hedging, risk-on/off  
OOS Cumulative Return: —

## Trading Strategies Related to XLK

Simons KMLM switcher (single pops)
Category: Tactical, momentum, mean‑reversion, volatility timing, leveraged ETFs, managed futures, risk‑on/risk‑off, event‑driven  
OOS Cumulative Return: 1832.53%

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