It was a sour start to the trading week for the S&P/ASX 200 Index (ASX: XJO) and many ASX shares this Monday.
Investors seemed to have had a rough weekend, seeing as the ASX 200 was sent home 0.24% lighter this session, leaving the index at 8,849.6 points.
This unhappy start to the trading week for the local markets comes after a similarly nervous end to the American trading week last Friday night (our time).
The Dow Jones Industrial Average Index (DJX: .DJI) started off strong, but ended up retreating by 0.48%.
The tech-heavy Nasdaq Composite Index (NASDAQ: .IXIC) fared slightly better, only losing 0.034% of its value.
But let's return to ASX shares and examine what the various ASX sectors were doing today.

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Winners and losers
There were more red sectors than green ones this session.
Leading those red sectors were energy shares. The S&P/ASX 200 Energy Index (ASX: XEJ) was singled out for punishment, plunging 1.62%.
Industrial stocks had a tough day too, with the S&P/ASX 200 Industrials Index (ASX: XNJ) tanking 0.61%.
Financial shares were right on industrials' tail. The S&P/ASX 200 Financials Index (ASX: XFJ) took a 0.6% hit this session.
Consumer discretionary stocks were out of favour too, as you can see from the S&P/ASX 200 Consumer Discretionary Index (ASX: XDJ)'s 0.51% dive.
We could say the same for its consumer staples counterpart. The S&P/ASX 200 Consumer Staples Index (ASX: XSJ) was sent home 0.45% lower.
Utilities shares weren't finding too many buyers either, with the S&P/ASX 200 Utilities Index (ASX: XUJ) losing 0.3%.
Gold stocks weren't much of a safe haven. The All Ordinaries Gold Index (ASX: XGD) gave up 0.09% of its value by the closing bell.
Broader mining shares only just missed out on a rise this Monday, evidenced by the S&P/ASX 200 Materials Index (ASX: XMJ)'s 0.01% slide.
Our final losers were communications stocks. The S&P/ASX 200 Communication Services Index (ASX: XTJ) fell by less than 0.01% though.
Turning to the winners now, it was tech shares that topped the other sectors, with the S&P/ASX 200 Information Technology Index (ASX: XIJ) soaring 1.44% higher.
Healthcare stocks were in high demand as well. The S&P/ASX 200 Healthcare Index (ASX: XHJ) jumped by a robust 0.94% this session.
Finally, real estate investment trusts (REITs) round out our list today, illustrated by the S&P/ASX 200 A-REIT Index (ASX: XPJ)'s 0.14% rise.
Top 10 ASX 200 shares countdown
Coming out on top of the table this Monday was tech stock Life360 Inc (ASX: 360). Life360 shares roared 6.17% higher today and closed at $48.51 each.
There wasn't any fresh news from the company this session. However, Life360's US shares had a blowout night on the US markets on Friday, which probably spurred investors to the local markets today.
Here are the other top shares from today's session:
| ASX-listed company | Share price | Price change |
| Life360 Inc (ASX: 360) | $48.51 | 6.17% |
| Boss Energy Ltd (ASX: BOE) | $2.09 | 6.09% |
| Liontown Resources Ltd (ASX: LTR) | $0.97 | 4.30% |
| Mesoblast Ltd (ASX: MSB) | $2.21 | 4.25% |
| Pilbara Minerals Ltd (ASX: PLS) | $2.48 | 3.77% |
| Paladin Energy Ltd (ASX: PDN) | $8.19 | 3.54% |
| James Hardie Industries plc (ASX: JHX) | $30.92 | 3.31% |
| Infratil Ltd (ASX: IFT) | $11.21 | 3.03% |
| Austal Ltd (ASX: ASB) | $8.40 | 2.69% |
| DigiCo Infrastructure REIT (ASX: DGT) | $3.09 | 2.66% |
Our top 10 shares countdown is a recurring end-of-day summary that shows which companies made big moves on the day. Check in at Fool.com.au after the weekday market closes to see which stocks make the countdown.