Ten of the 11 market sectors finished the week higher, with the S&P/ASX 200 Index (ASX: XJO) gaining 0.9% in value over the past five trading days.
The ASX 200 closed the session on Friday at 7,051 points.
Let's look at which sectors were the best and worst performers this week.
Utilities led the ASX sectors this week
According to CommSec data, this week's top rising sector was utilities, with the S&P/ASX 200 Utilities Index (ASX: XUJ) rising 5.09%.
The big news in the sector this week was the green light given by the Australian Competition and Consumer Commission on the $15 billion takeover of Origin Energy Ltd (ASX: ORG).
All shares in Origin will be sold to a group led by Brookfield Corp (NYSE: BN) and MidOcean Energy. There are more regulatory hurdles to clear, but this was one of the biggest.
Origin shares rose 6.06% over the past five days to close on Friday at $9.27.
Other big hitters in the utilities space rose strongly this week. They included AGL Energy Limited (ASX: AGL) shares, up 4.73% to $10.95, and APA Group (ASX: APA) shares, up 2.52% to $8.34.
The biggest faller of the market sectors this week was healthcare, with the S&P/ASX 200 Healthcare Index (ASX: XHJ) falling 2.5%.
The index was dragged down by its biggest constituent, CSL Limited (ASX: CSL). CSL shares fell 3.13% to close on Friday at $241.39. The CSL share price hit a multi-year low of $230.81 during the day.
Fellow healthcare major ResMed CDI (ASX: RMD) shares also fell hard this week. ResMed shares dropped 5.86% by the close on Friday to $21.53.
Both stocks are down due to concern that diabetes and obesity medicine Ozempic could disrupt their businesses.
A new trial this week showed Ozempic could be a treatment for chronic kidney disease (potentially impacting CSL Vifor).
Ozempic could also reduce the addressable market for sleep apnoea treatments, like ResMed's CPAP machines, given obesity is the biggest risk factor for sleep apnoea.
ASX 200 market sector snapshot
Here's how the 11 market sectors stacked up this week.
Over the past five days:
| ASX market sector | Change this week |
| S&P/ASX 200 Utilities (ASX: XUJ | 5.09% |
| S&P/ASX 200 Energy (ASX: XEJ) | 3.78% |
| S&P/ASX 200 Information Technology (ASX: XIJ) | 2.87% |
| S&P/ASX 200 Materials (ASX: XMJ) | 2.53% |
| S&P/ASX 200 Communication (ASX: XTJ) | 2.46% |
| S&P/ASX 200 Consumer Discretionary (ASX: XDJ) | 1.50% |
| S&P/ASX 200 Financials (ASX: XFJ) | 1.15% |
| S&P/ASX 200 A-REIT (ASX: XPJ) | 1.10% |
| S&P/ASX 200 Industrials (ASX: XNJ) | 0.66% |
| S&P/ASX 200 Consumer Staples (ASX: XSJ) | 0.16% |
| S&P/ASX 200 Health Care (ASX: XHJ) | -2.50% |
