The S&P/ASX 200 Index (ASX: XJO) got off to a rough start this week, falling 0.21% on Monday to close at 7,417.8 points.
Meanwhile, the February earnings season stepped up a gear, with results from Insurance Australia Group Ltd (ASX: IAG), Aurizon Holdings Ltd (ASX: AZJ), Beach Energy Ltd (ASX: BPT), and Endeavour Group Ltd (ASX: EDV) all hitting the market.
Speaking of earnings, the Star Entertainment Group Ltd (ASX: SGR) share price crashed 20% after the company revealed that increased regulation and competition has taken a major toll on its bottom line.
Perhaps unsurprisingly, the company's home sector, the S&P/ASX 200 Consumer Discretionary Index (ASX: XDJ) weighed heaviest, falling 1.4%.
Meanwhile, the S&P/ASX 200 Energy Index (ASX: XEJ) outperformed all others, gaining 1.8% on the back of strengthening oil prices. The black liquid's value lifted over 2% on Friday amid reports Russia will cut its oil output by 5% next month.
But the top performing ASX 200 share wasn't from the energy sector. Let's take a look at which stock posted today's biggest gain.
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Top 10 ASX 200 shares today
The IAG share price posted the biggest gain of the ASX 200 on Monday, soaring 4.5% to close at $4.92.
The insurer's post-tax profit rocketed more than 170% year-on-year last half to reach $468 million.
These shares made today's biggest gains:
| ASX-listed company | Share price | Price change |
| Insurance Australia Group Ltd (ASX: IAG) | $4.92 | 4.46% |
| Endeavour Group Ltd (ASX: EDV) | $7.10 | 4.11% |
| Coronado Global Resources Inc (ASX: CRN) | $2.02 | 3.59% |
| Karoon Energy Ltd (ASX: KAR) | $2.23 | 3.24% |
| Johns Lyng Group Ltd (ASX: JLG) | $5.76 | 3.23% |
| Silver Lake Resources Limited (ASX: SLR) | $1.145 | 3.15% |
| Whitehaven Coal Ltd (ASX: WHC) | $7.93 | 2.45% |
| Seven Group Holdings Ltd (ASX: SVW) | $23.53 | 2.35% |
| Woodside Energy Group Ltd (ASX: WDS) | $36.62 | 2.12% |
| Sayona Mining Ltd (ASX: SYA) | $0.245 | 2.08% |
Our top 10 shares countdown is a recurring end-of-day summary to let you know which companies were making big moves on the day. Check in at Fool.com.au after the weekday market closes to see which stocks make the countdown.
