It's been a wild start to the trading week this Monday for ASX investors. After taking a deep plunge at market open this morning, the S&P/ASX 200 Index (ASX: XJO) and many ASX 200 stocks have since recovered. The index has currently broken even with a 0.1% rise to just over 8,300 points.

As such, it might surprise you to find that we have seen a handful of ASX 200 stocks comfortably exceed that broader-market gain to mint fresh new 52-week highs today.

Let's talk about those five ASX 200 stocks.

Five ASX 200 stocks at new 52-week highs on Monday

Here are the lucky five ASX 200 stocks that have seen new 12-month high watermarks this Monday:

*at the time of writing

Why are these shares at new 52-week highs?

Let's start with ASX 200 telco stock, Telstra. Telstra shares have been rising ever since the telecommunications leader revealed its latest earnings results last week on 20 February.

As we covered at the time, these earnings saw Telstra report a 0.9% rise in total income to $11.8 billion, as well as earnings growth of 6% to $4.25 billion.

This saw Telstra reveal a 7.1% rise in after-tax profits, which enabled the company to increase its interim dividend by 5.6% to 9.5 cents per share.

Investors have understandably been impressed. Telstra shares are now up more than 6% since the earnings report, and have hit several new 52-week highs, the latest today.

Let's talk about ASX 200 private health insurance share Medibank now.

Unlike Telstra, Medibank hasn't yet reported its latest earnings. However, its report is due imminently, this Thursday, 27 February, to be precise.

Medibank shares have risen by a healthy 5.6% over just the past month. With today's new 52-week high, we can arguably conclude that investors are expecting some pleasing numbers from the ASX 200 stock this week.

Earnings boost Telix and EVT shares

ASX 200 healthcare stock Telix Pharmaceuticals is another post-earnings winner. Telix dropped its latest numbers last Friday, 21 February.

As we covered then, it was a blowout report for the stock. Telix unveiled a 56% jump in revenues to $783.2 million, as well as an 860% explosion in profits after tax to $49.9 million.

Telix shares have surged 15.3% since this report, which probably explains today's new 52-week high.

It's a similar story for ASX 200 entertainment share, EVT.

EVT released its latest numbers just today. Highlights included a 3.7% rise in earnings to $99.6 million, as well as a 14.9% soar in reported net profits to $27.1 million. That was despite a 1.5% fall in group revenue. EVT's dividend also got a boost up to 16 cents per share.

Finally, ASX 200 scrap metal stock Sims hit a new high today. That's despite no fresh news or obvious catalysts out from the company.