Tower has been added to the NZX 50 Portfolio Index and MidCap Index.
The addition, which was announced by S&P Dow Jones Indices on October 16, 2024, took effect before trading opened on Tuesday.
See moreNumbers hide 'a lot of paddling' going on under the surface.
Since a Wednesday trading update, company's shares have risen 9%.
Bottom end of ebitdaf guidance is $1.5m higher than previous estimate.
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