After starting the day off on the wrong foot, the S&P/ASX 200 Index (ASX: XJO) tumbled even further this afternoon to close the day 1.48% lower at 7,102.8 points.
The apparent driver of its tumble was the latest Aussie inflation figures. The consumer price index (CPI) rose 6.8% over the 12 months to April, according to the Australian Bureau of Statistics (ABS).
Leading the market's losses on Wednesday was the S&P/ASX 200 Energy Index (ASX: XEJ). It plunged 2.5% amid falling oil prices.
Brent crude oil dropped 4.6% to US$73.54 a barrel overnight while US Nymex oil dumped 4.4% to reach US$69.46 a barrel.
Meanwhile, the S&P/ASX 200 Materials Index (ASX: XMJ) fell 2.2% and the S&P/ASX 200 Financials Index (ASX: XFJ) plunged 2%.
The latter was driven lower by the Bank of Queensland Ltd (ASX: BOQ) share price. It fell 5.4% after the bank revealed its entered enforceable undertakings with regulators.
Finally, the S&P/ASX 200 Information Technology Index (ASX: XIJ) led the market today, gaining 0.01%, the only sector to finish in the green.
So, with all that in mind, let's dive into today's top-performing ASX 200 shares.
Top 10 ASX 200 shares countdown
The Imugene Limited (ASX: IMU) share price outperformed all others on Wednesday despite the company's silence. The stock rose 4.8% to close at 11 cents.
These shares made today's biggest gains:
| ASX-listed company | Share price | Price change |
| Imugene Limited (ASX: IMU) | $0.11 | 4.76% |
| Megaport Ltd (ASX: MP1) | $6.82 | 4.12% |
| Core Lithium Ltd (ASX: CXO) | $1.05 | 3.96% |
| BrainChip Holdings Ltd (ASX: BRN) | $0.455 | 3.41% |
| Telix Pharmaceuticals Ltd (ASX: TLX) | $11.70 | 3.36% |
| Alumina Limited (ASX: AWC) | $1.45 | 2.84% |
| De Grey Mining Limited (ASX: DEG) | $1.34 | 2.29% |
| Paladin Energy Ltd (ASX: PDN) | $0.545 | 1.87% |
| Northern Star Resources Ltd (ASX: NST) | $12.91 | 1.65% |
| Dexus Property Group (ASX: DXS) | $8.21 | 1.36% |
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.
