Stocks that are expected to significantly grow their profitability in the future can add meaningful upside to your portfolio. Smart Parking and Senex Energy are examples of many high-growth stocks that the market believe will be upcoming outperformers. I would suggest taking a look at my list of companies that compare favourably in all criteria, and consider whether they would add value to your current portfolio.

Smart Parking Limited (ASX:SPZ)

Smart Parking Limited provides parking technology and management solutions in New Zealand, Australia, the United Kingdom, and internationally. Smart Parking is headed by CEO Paul Gillespie. The company currently has a market cap of AUD A$130.64M, putting it in the small-cap stocks category

An outstanding 63.47% earnings growth is forecasted for SPZ, driven by an underlying sales growth of 48.42% over the next few years. Though some cost-cutting activities may artificially inflate margins, it appears that this isn’t solely the case here, as profit growth is also coupled with high top-line expansion. This prospective profitability should trickle down to shareholders, with analysts expecting the company to generate a high double-digit return on equity of 25.00%. SPZ ticks the boxes for robust growth generation on all levels of line items, which makes it an appealing stock to dig into deeper. Thinking of investing in SPZ? Other fundamental factors you should also consider can be found here.

Senex Energy Limited (ASX:SXY)

Senex Energy Limited explores, develops, and produces oil and gas resources in Australia. The company currently employs 137 people and has a market cap of AUD A$549.96M, putting it in the small-cap stocks category.

Extreme optimism for SXY, as market analysts projected an outstanding earnings growth, which is expected to more than double, supported by an equally strong sales. An affirming signal is when net income increase is supported by top-line growth. Since net income isn’t artificially inflated by one-off initiatives such as cost-cutting, we know this profit growth is more likely to be sustainable. We see this bottom-line expansion directly benefiting shareholders, with expected positive return on equity of 6.50%. SXY’s bullish prospects on both the top and bottom lines make it an interesting stock to invest more time to understand how it can add value to your portfolio. Should you add SXY to your portfolio? Check out its fundamental factors here.

Avanco Resources Limited (ASX:AVB)

Avanco Resources Limited engages in the exploration and development of mineral properties in Brazil. The company now has 141 employees and with the market cap of AUD A$191.64M, it falls under the small-cap group.