It was a bouncy and optimistic start to the trading week for the S&P/ASX 200 Index (ASX: XJO) and many ASX shares this Monday.
After a sour trading week last week, investors seem to have come back from the weekend with a little extra pep in the proverbial step, with the ASX 200 opening higher and staying in positive territory all day today. By the time the markets closed, the index had gained 0.49% to 9,103.1 points.
This happy start to the week's trading for the ASX followed a similarly buzzy end to the American trading week on Friday night (our time).
The Dow Jones Industrial Average Index (DJX: .DJI) was in very fine form indeed, rising 0.98%.
The tech-heavy Nasdaq Composite Index (NASDAQ: .IXIC) wasn't quite as bubbly, but still gained 0.43%.
But let's return to this week and our local markets now for a closer look at what was happening amongst the various ASX sectors this session.

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Winners and losers
Despite the market's rise this Monday, a few sectors still missed out on gains.
Leading those losers were consumer staples shares. The S&P/ASX 200 Consumer Staples Index (ASX: XSJ) was left out in the cold today, shrinking 0.95%.
Financial stocks also had a rough one, with the S&P/ASX 200 Financials Index (ASX: XFJ) sinking 0.72%.
Utilities shares were shunned, too. The S&P/ASX 200 Utilities Index (ASX: XUJ) slid 0.48% lower this session.
Our last losers were communications stocks, as you can see from the S&P/ASX 200 Communication Services Index (ASX: XTJ)'s 0.44% slip.
Turning to the green sectors now, it was mining shares that fronted the winners. The S&P/ASX 200 Materials Index (ASX: XMJ) roared 2.43% higher this Monday.
Gold stocks ran hot as well, with the All Ordinaries Gold Index (ASX: XGD) soaring up 1.71%.
Tech shares also had a day to remember. The S&P/ASX 200 Information Technology Index (ASX: XIJ) enjoyed a 0.96% surge.
Healthcare stocks were in demand as well, evidenced by the S&P/ASX 200 Healthcare Index (ASX: XHJ)'s 0.62% lift.
Energy shares were next. The S&P/ASX 200 Energy Index (ASX: XEJ) jumped 0.47% today.
Then came real estate investment trusts (REITs), with the S&P/ASX 200 A-REIT Index (ASX: XPJ) adding 0.12% to its total.
Industrial stocks managed a win. The S&P/ASX 200 Industrials Index (ASX: XNJ) put on another 0.1% this session.
Finally, consumer discretionary shares got over the line, illustrated by the S&P/ASX 200 Consumer Discretionary Index (ASX: XDJ)'s 0.09% bump.
Top 10 ASX 200 shares countdown
Beating out some stiff competition to take out top spot on the index this Monday was tech stock Data#3 Ltd (ASX: DTL). Data#3 shares rocketed 17.85% higher today to finish at $11.09 each.
This huge gain followed the company releasing its latest earnings, which clearly had a lot going for them.
Here's the rest of today's best:
| ASX-listed company | Share price | Price change |
| Data#3 Ltd (ASX: DTL) | $11.09 | 17.85% |
| Deep Yellow Ltd (ASX: DYL) | $1.69 | 11.55% |
| Paladin Energy Ltd (ASX: PDN) | $11.70 | 10.59% |
| IperionX Ltd (ASX: IPX) | $3.18 | 10.03% |
| Ansell Ltd (ASX: ANN) | $38.24 | 9.57% |
| EVT Ltd (ASX: EVT) | $15.33 | 8.88% |
| PLS Group Ltd (ASX: PLS) | $5.47 | 7.89% |
| Silex Systems Ltd (ASX: SLX) | $5.50 | 7.63% |
| NexGen Energy (Canada) Ltd (ASX: NXG) | $15.36 | 6.15% |
| Nickel Industries Ltd (ASX: NIC) | $0.89 | 5.95% |
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.