WAM Income Maximiser's (ASX:WMX) estimated pre-tax net tangible assets increased to AU$1.69 per share as of Aug. 14 from AU$1.62 as of July 24, which was the last trading day before its disclosure of an entitlement offer, according to a Monday filing with the Australian bourse.

Meanwhile, the company's investment portfolio increased 4.3% between July 24 and Aug. 14, outperforming its benchmark by 1.7% over the same period, per the filing.

The two-for-five pro-rata entitlement offer gives shareholders the opportunity to boost their stake in the company at an issue price of AU$1.62 per new share.