Have you been paying attention to shares of Janus Henderson Group plc (JHG)? Shares have been on the move with the stock up 5.1% over the past month. The stock hit a new 52-week high of $44.12 in the previous session. Janus Henderson Group plc has gained 35.3% since the start of the year compared to the 22.5% move for the Zacks Finance sector and the 34.3% return for the Zacks Financial - Investment Management industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, as it hasn't missed our earnings consensus estimate in any of the last four quarters. In its last earnings report on July 29, 2021, Janus Henderson Group plc reported EPS of $1.16 versus consensus estimate of $0.99 while it beat the consensus revenue estimate by 7.4%.For the current fiscal year, Janus Henderson Group plc is expected to post earnings of $4.05 per share on $2.79 billion in revenues. This represents a 34.88% change in EPS on a 21.47% change in revenues. For the next fiscal year, the company is expected to earn $4.1 per share on $2.85 billion in revenues. This represents a year-over-year change of 1.11% and 2.1%, respectively.Valuation MetricsJanus Henderson Group plc may be at a 52-week high right now, but what might the future hold for the stock? A key aspect of this question is taking a look at valuation metrics in order to determine if the company is due for a pullback from this level.On this front, we can look at the Zacks Style Scores, as they provide investors with an additional way to sort through stocks (beyond looking at the Zacks Rank of a security). These styles are represented by grades running from A to F in the categories of Value, Growth, and Momentum, while there is a combined VGM Score as well. The idea behind the style scores is to help investors pick the most appropriate Zacks Rank stocks based on their individual investment style.Janus Henderson Group plc has a Value Score of B. The stock's Growth and Momentum Scores are C and D, respectively, giving the company a VGM Score of B.In terms of its value breakdown, the stock currently trades at 10.9X current fiscal year EPS estimates. On a trailing cash flow basis, the stock currently trades at 7.1X versus its peer group's average of 12.9X. This isn't enough to put the company in the top echelon of all stocks we cover from a value perspective.Zacks RankWe also need to look at the Zacks Rank for the stock, as this supersedes any trend on the style score front. Fortunately, Janus Henderson Group plc currently has a Zacks Rank of #2 (Buy) thanks to favorable earnings estimate revisions from covering analysts.Since we recommend that investors select stocks carrying Zacks Rank of 1 (Strong Buy) or 2 (Buy) and Style Scores of A or B, it looks as if Janus Henderson Group plc meets the list of requirements. Thus, it seems as though Janus Henderson Group plc shares could still be poised for more gains ahead. Breakout Biotech Stocks with Triple-Digit Profit Potential The biotech sector is projected to surge beyond $2.4 trillion by 2028 as scientists develop treatments for thousands of diseases. They’re also finding ways to edit the human genome to literally erase our vulnerability to these diseases. Zacks has just released Century of Biology: 7 Biotech Stocks to Buy Right Now to help investors profit from 7 stocks poised for outperformance. Recommendations from previous editions of this report have produced gains of +205%, +258% and +477%. The stocks in this report could perform even better.See these 7 breakthrough stocks now>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Janus Henderson Group plc (JHG): Get Free Report To read this article on Zacks.com click here.