Sister stock always move up/down together

Like family sisters, alway stick to each other, happy together, sad together, sharing the care and most important love each other. What is the best gift from the daddy and mummy, is the sister and brother they give to you.

In the stock market, sister stocks they normally will move each other. The leader sister stock will lead the rest of the direction. I called it leader sheep.
Like Topgolve will lead the glove stocks,
Teoseng will lead the egg and chicken stocks,
IFCAMSC will lead the GST IT solution stocks,
MPI will lead the semicon stocks,
Jaya Tiasa will lead the timber stocks, Engtex will lead the steel pipe stocks,
Sapura Kencana Petro will lead oil and gas stock,
Maybank will lead banking stocks,
Penny stock like Mpay, Priva, Iris will lead penny stocks,
Export oriented stock or trade in USD like VS industry, Poh Huat, Latitude, Liihen
If we able to catch the theme play, catch the leader sheep and at the same time catch the related smaller sheep, we will able profit from the theme play.
The logic behind is still come back to EPS growth basic. For instance stonger USD will benefit companies trade in USD, higher future profit and higher future EPS will be in consideration of the price reflection to the future value.
If you able to forecast the next theme play, collect it in the early stage play, super profit will be generated.
Aim the bull...aim the leader bull or leader sheep...