However in this case with Ebay it wasn't a stock split but rather a big chunk of Ebay (Paypal) split off into a separate independent company. I think what happened is when Ebay and Paypal separated Ebay share owners gained the equivalent Paypal shares. So this would throw off the numbers.
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[ 3.5 ms ] story [ 33.4 ms ] threadCan you explain how stock splits are accounted for in the "Percent gain" calculation for this case?: http://newinvestordaily.com/what-would-it-be-worth/r/30991
Intuitively that value would be much larger (300% or so instead of 40%).
However in this case with Ebay it wasn't a stock split but rather a big chunk of Ebay (Paypal) split off into a separate independent company. I think what happened is when Ebay and Paypal separated Ebay share owners gained the equivalent Paypal shares. So this would throw off the numbers.
https://news.ycombinator.com/item?id=10747973