Large trillion-dollar companies are tightening their grip on the market, often by acquiring smaller rivals. This trend will likely pick up with new regulatory leadership, but a few mid-sized businesses will continue prospering by anchoring themselves in unique market segments.

Digging up these buried treasures isn’t easy, and that’s exactly why we created StockStory. That said, here are three of our favorite mid-cap stocks that could be the next 50 baggers.

HubSpot (HUBS)

Market Cap: $19.11 billion

Born from the idea that traditional interruptive marketing was becoming less effective, HubSpot (NYSE: HUBS) provides an integrated platform that helps businesses attract, engage, and manage customer relationships through marketing, sales, service, and content management tools.

Why Are We Positive On HUBS?

1. Average billings growth of 19.8% over the last year enhances its liquidity and shows there is steady demand for its products
2. Projected revenue growth of 16.5% for the next 12 months suggests its momentum from the last two years will persist
3. Software is difficult to replicate at scale and leads to a stellar gross margin of 84.1%

HubSpot’s stock price of $361.83 implies a valuation ratio of 5.7x forward price-to-sales. Is now the time to initiate a position? See for yourself in our full research report, it’s free for active Edge members.

EMCOR (EME)

Market Cap: $27.94 billion

Through its network of over 70 subsidiaries, EMCOR (NYSE: EME) provides electrical, mechanical, and building construction and services

Why Are We Backing EME?

1. Annual revenue growth of 15.9% over the last two years was superb and indicates its market share increased during this cycle
2. Share repurchases over the last two years enabled its annual earnings per share growth of 47.4% to outpace its revenue gains
3. Improving returns on capital reflect management’s ability to monetize investments

At $619.51 per share, EMCOR trades at 23.1x forward P/E. Is now a good time to buy? Find out in our full research report, it’s free for active Edge members.

SEI Investments (SEIC)

Market Cap: $10.1 billion

Founded in 1968 as Simulated Environments Inc. to train bank loan officers using computer simulations, SEI Investments (NASDAQ: SEIC) provides technology platforms, investment management, and operational solutions for financial institutions, wealth managers, and investors.

Why Will SEIC Beat the Market?

1. Decent 9% annual revenue growth over the last two years beat most of its peers, showing customers find value in its products and services
2. Share buybacks catapulted its annual earnings per share growth to 26.9%, which outperformed its revenue gains over the last two years
3. Industry-leading 26.7% return on equity demonstrates management’s skill in finding high-return investments

SEI Investments is trading at $81.99 per share, or 15.4x forward P/E. Is now the time to initiate a position? See for yourself in our in-depth research report, it’s free for active Edge members.

Stocks We Like Even More

Your portfolio can’t afford to be based on yesterday’s story. The risk in a handful of heavily crowded stocks is rising daily.

The names generating the next wave of massive growth are right here in our Top 6 Stocks for this week. This is a curated list of our High Quality stocks that have generated a market-beating return of 244% over the last five years (as of June 30, 2025).

Stocks that made our list in 2020 include now familiar names such as Nvidia (+1,326% between June 2020 and June 2025) as well as under-the-radar businesses like the once-small-cap company Exlservice (+354% five-year return). Find your next big winner with StockStory today for free. Find your next big winner with StockStory today. Find your next big winner with StockStory today.