It has been another busy week for many of Australia's top brokers. This has led to the release of a number of broker notes.

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 right now:

Domain Holdings Australia Ltd (ASX: DHG)

According to a note out of Bell Potter, its analysts have upgraded this property listings company's shares to a buy rating with an improved price target of $3.30. This follows the release of a half year result which revealed a 27% increase in earnings per share. This was ahead of the market's expectations. The broker believes that this shows that Domain is repairing the damage to its audience and listings. It feels this could mean it is approaching the start of a potential consensus earnings upgrade cycle. The Domain share price is trading at $3.07 on Friday afternoon.

Pro Medicus Limited (ASX: PME)

Another note out of Bell Potter reveals that its analysts have upgraded this health imaging technology company's shares to a buy rating with an vastly improved price target of $330.00. This follows the release of another strong result from Pro Medicus this week. Bell Potter highlights that its full stack solution continues to wipe the floor with competitors. It notes that there have been 10 contract announcements in the last 12 months, including two new academic medical centres clients. The broker also notes that it expects further growth in the cardiology space with the first small scale implementation to take place in April. The Pro Medicus share price is fetching $284.80 at the time of writing.

Treasury Wine Estates Ltd (ASX: TWE)

Analysts at Goldman Sachs have retained their buy rating on this wine giant's shares with a slightly trimmed price target of $12.90. According to the note, the broker has reduced its sales and earnings forecasts slightly through to FY 2027 to reflect stronger Penfolds and Americas sales, offset by weaker Premium Brands sales. Outside this, Goldman points out that Treasury Wine's shares are trading on an FY 2026 P/E of just ~15x, which is inexpensive relative to its consumer coverage. And if it is able to demonstrate added comfort to the market on its Penfolds channel sell-through and sustained US luxury portfolio growth, it expects the stock to re-rate positively. The Treasury Wine share price is trading at $10.86 this afternoon.