It was a busy week for Australia's top brokers. This has led to a number of broker notes being released.
Three broker buy ratings that you might want to know more about are summarised below. Here's why brokers think these ASX shares are in the buy zone:

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Megaport Ltd (ASX: MP1)
According to a note out of Bell Potter, its analysts have initiated coverage on this cloud infrastructure provider's shares with a buy rating and $27.00 price target. Bell Potter believes Megaport is exceptionally well-placed for growth over the coming years thanks to strategic contracts which are being rolled out this year. In fact, the broker believes that underlying EBITDA will grow from $77 million in FY 2026 to $329 million in FY 27 and then $726m in FY 2028. Importantly, it notes that all the capex required for the roll out of the strategic contracts is fully funded. Bell Potter also highlights that Megaport is trading on an FY 2028 EV/EBITDA multiple of around 7x, while the median multiple of the domestic comps is around 15x and international comps is around 11x (based on 2027 forecasts). The Megaport share price ended the week at $22.34.
Navigator Global Investments Ltd (ASX: NGI)
A note out of Morgans reveals that its analysts have retained their buy rating and $3.04 price target on this global investments company's shares. The broker notes that Navigator Global has agreed to sell a stake in Invictus Capital Partners to New York Life Investment Management. It points out that the sale crystallises a premium of up to ~8% to cost on the initial 12.7% stake, while the company keeps its carry and future upside through a residual 8.3% stake. The good news is management believes the retained stake could be worth meaningfully more, on a pro-rata basis, when it is transferred in 2031, helped by the New York Life Investment Management partnership. In Morgans' view, the sale shows the optionality and embedded value in its portfolio. The Navigator Global share price was fetching $2.30 at Friday's close.
Netwealth Group Ltd (ASX: NWL)
Another note out of Bell Potter reveals that its analysts have retained their buy rating on this investment platform provider's shares with a reduced price target of $25.00. The broker has updated its model to reflect equity market movements and commentary on net flow expectations. Bell Potter believes that consensus forecasts are too high. It notes that they imply that net inflows would be run rating at the upper end of the $18 billion to $20 billion guidance range during the final six weeks of the first quarter despite equity markets weakening. Nevertheless, the broker remains positive and sees value in its shares at current levels. As a result, it thinks investors should be buying the dip. The Netwealth share price ended the week at $17.21.