"Forsyth Barr estimated that a Spark share price of below $4.80 between the 17th and 30th of April would likely trigger the EBOS exit from the ACWI. Funnily enough the Spark share price does indeed slump below that level during that period. We cannot know for sure but if you were running an arbitrage hedge fund a possible trade would be to short sell EBOS now in the expectation of buying it back cheaper when the 9.7 million of index selling hits the market. But to make sure EBOS does leave the index, the arbitrage hedge fund also sells shares in Spark to contribute towards a weaker share price."
https://www.goodreturns.co.nz/articl...or+30+Apr+2024