State Street SPDR Portfolio S&P 500 ETF ST0x vs SP500 xStock

SP500 xStock (SPYX) is 270.3× the size of State Street SPDR Portfolio S&P 500 ETF ST0x (WTSPYM) by market capitalisation. Over the past 30 days, SPYX is ahead by 0.5 percentage points (WTSPYM +0.5% against SPYX +1.0%). Their daily returns move barely together (correlation 0.03 across 32 shared trading days). WTSPYM has been the more volatile of the two, at 1511% annualised against SPYX's 11%.

Correlation: 0.03
Size ratio: 1 : 270.3
Ahead over 30 days: SPYX

State Street SPDR Portfolio S&P 500 ETF ST0xWTSPYM

$90.2800

24h: +1.54%
Market cap: $266,498
Volume 24h: $28,216
Volatility (ann.): 1511%

SP500 xStockSPYX

$770.4700

24h: +2.23%
Market cap: $72.03M
Volume 24h: $9.75M
Volatility (ann.): 11%

WTSPYM 0.4%Share of the two combined market caps99.6% SPYX

Performance

WTSPYMSPYX

7 days-0.79%-0.05%SPYX
30 days+0.52%+1.05%SPYX

Correlation

0.03over 32 shared trading days

−1 opposite0 unrelated+1 in step

7d: insufficient data30d: 0.0290d: insufficient data1y: insufficient data

Measured on daily returns rather than on prices. Two assets that both simply trend upward score near 1.0 on raw prices whether or not they move together, so returns are what answer the question people mean by correlation.

Risk & extremes

Metric	WTSPYM	SPYX
Max drawdown (400d)	-85.5%	-2.7%
Risk-adjusted return (90d)	0.00	0.01

Relative strength over 90 days: WTSPYM outperformed SPYX by 0.0% — measured on the WTSPYM/SPYX ratio, so it holds regardless of market direction.

State Street SPDR Portfolio S&P 500 ETF ST0x →SP500 xStock →