The S&P/ASX 200 Index (ASX: XJO) endured a horrid day of trading this Tuesday, abruptly reversing the goodwill that kicked off the trading week yesterday.
By the time the closing bell rang, the ASX 200 had clanged down a nasty 1.66%, leaving the index at 8,205.7 points.
This dastardly Tuesday for the Australian stock market comes after a more mixed night over on the American markets early this morning to start off their trading week.
The Dow Jones Industrial Average Index (DJX: .DJI) wasn't quite ready to leave the weekend behind, tanking 0.8%.
Things were better for the tech-heavy Nasdaq Composite Index (NASDAQ: .IXIC) though, which moved 0.27% higher.
But let's get back to the local markets now and take stock of what the various ASX sectors were doing today.

Image source: Getty Images
Winners and losers
There was misery all around today, with not one ASX sector escaping the market's wrath.
Leading the charge off the cliff were healthcare shares. The S&P/ASX 200 Healthcare Index (ASX: XHJ) was punished, cratering 2.42%.
Real estate investment trusts (REITs) weren't much better, with the S&P/ASX 200 A-REIT Index (ASX: XPJ) plunging 2.25%.
Consumer discretionary stocks had a terrible start to the week as well. The S&P/ASX 200 Consumer Discretionary Index (ASX: XDJ) tanked a flat 2% today.
Financial shares weren't riding to the rescue, illustrated by the S&P/ASX 200 Financials Index (ASX: XFJ)'s 1.85% slump.
ASX energy stocks had a day to forget too. The S&P/ASX 200 Energy Index (ASX: XEJ) saw 1.51% taken from it.
Utilities shares weren't much better, with the S&P/ASX 200 Utilities Index (ASX: XUJ) crashing 1.46% lower.
Industrial stocks were also friendless. The S&P/ASX 200 Industrials Index (ASX: XNJ) retreated 1.38% today.
Mining shares also found themselves at the pity party, as you'll see from the S&P/ASX 200 Materials Index (ASX: XMJ)'s 1.32% decline.
Communications stocks came off a little better, but the S&P/ASX 200 Communication Services Index (ASX: XTJ) was still walked back by 0.89%.
Consumer staples shares weren't attracting too many buyers either. The S&P/ASX 200 Consumer Staples Index (ASX: XSJ) sank 0.58% lower this Tuesday.
Tech stocks did better than most this session, with the S&P/ASX 200 Information Technology Index (ASX: XIJ) getting a 0.39% haircut.
Finally, our best-performing sector today was gold shares. The All Ordinaries Gold Index (ASX: XGD) still lost 0.12% though.
Top 10 ASX 200 shares countdown
Coming in ahead of the pack today was mining share Stanmore Resources Ltd (ASX: SMR). Stanmore stock shot up a healthy 3.44% to $3.01 today.
This move followed the company releasing its latest quarterly numbers, which investors clearly liked the look of.
Here's how the rest of today's winners pulled up:
| ASX-listed company | Share price | Price change |
| Stanmore Resources Ltd (ASX: SMR) | $3.01 | 3.44% |
| Corporate Travel Management Ltd (ASX: CTD) | $11.88 | 3.04% |
| Yancoal Australia Ltd (ASX: YAL) | $6.46 | 3.03% |
| IRESS Ltd (ASX: IRE) | $10.09 | 2.96% |
| WiseTech Global Ltd (ASX: WTC) | $107.62 | 2.84% |
| Healius Ltd (ASX: HLS) | $1.74 | 1.46% |
| Qantas Airways Ltd (ASX: QAN) | $7.56 | 1.20% |
| Bega Cheese Ltd (ASX: BGA) | $5.33 | 0.76% |
| Pilbara Minerals Ltd (ASX: PLS) | $2.78 | 0.72% |
| Bellevue Gold Ltd (ASX: BGL) | $1.57 | 0.64% |
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.