News for hackers. Stuff that matters.
Re:Insider Trader Had All the Answers by koolba on Friday October 04, 2024 @09:04PM (#41746926)
> At the time we had a family friend that was working for a company about to announce a stock split along with a very good earnings report. He told me when to go all in on that stock, and i did exactly that. The day after that split my portfolio had more than doubled, beating the class record by a significant margin. Said record stood until the teacher retired.

That family friend seems like a complete idiot for passing on that information.

Plus a stock split on its own has no change to the value of a stock. There’s no reason for it to double overnight. In fact the direct effect on the price is the opposite as you have twice (or K times) as many shares and each is worth half (or 1/K). So the net effect is zero.

Re:Insider Trader Had All the Answers by MassPikeMike on Friday October 04, 2024 @10:03PM (#41747178)
In theory you are right that stock splits have no bearing on returns, but in practice it is well documented (see e.g. [1]) that "stock splits and reverse splits often result in short-term abnormal returns even though such split events do not change any fundamental factors affecting the valuation of a firm's stock."

[1] https://www.sciencedirect.com/science/article/pii/S016726812...

Re:Insider Trader Had All the Answers by senkora on Saturday October 05, 2024 @12:41AM (#41747776)
> We provide evidence that the incomplete adjustment of share prices to splits or reverse splits can be attributed to heterogeneity in traders' cognitive abilities.

What a colorful turn of phrase.

Re:Insider Trader Had All the Answers by genocidicbunny on Saturday October 05, 2024 @12:45AM (#41747789)
The split was followed by the stock very quickly regaining it's previous per share value over the course of the trading day, though maybe it was over the next week; this was a few decades ago.

And i agree that he shouldn't have told me. A few years later i actually told him something along those lines. I appreciated it but he exposed himself to a lot of legal risk.