^GPSC v SPY v .INX

[PessOptimist]

I used to use ^GPSC for S&P 500 charts. .INX seems to be about the same. SPY seems like it is 1/10th of the other two but not always. Is there an easy way to convert SPY to GPSC or INX?

PO

 

[RealMoneyIssues]

I used to use ^GPSC for S&P 500 charts. .INX seems to be about the same. SPY seems like it is 1/10th of the other two but not always. Is there an easy way to convert SPY to GPSC or INX?

PO

Not Really:

The SPDR® S&P 500® ETF Trust seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of the S&P 500® Index (the "Index")

I added the emphasis for clarity...

Source:
https://us.spdrs.com/en/etf/spdr-sp-500-etf-SPY