Serco Group (LSE:SRP), a reliable FTSE 250 stock, has been propping up portfolios lately with its consistent growth over the past six months [6c16dbd4]. Despite facing a pricing scandal in 2013, the company has resolved the issue and gained traction, being awarded new government contracts. The share price has enjoyed a 20% growth over the past year, and analysts have set a price target of 215p in 12 months, representing a 20% increase from current levels [6c16dbd4]. However, analysts expect around a 10% earnings decline over the next 12 months, leading to an estimated future return on equity (ROE) of 15% in three years. The dividend yield is currently low at 1.7% [6c16dbd4]. Despite these factors, the author of the analysis believes that Serco has overcome its past mistakes and presents a stable and reliable growth opportunity for a well-diversified portfolio [6c16dbd4].