By Ari Charney on November 26, 2012

A couple of weeks ago, I examined the consensus holdings among nine top-performing, small-cap mutual funds. My goal was to find those stealth stocks that enjoy the rare concurrence of at least several of the very best small-cap fund managers.

This time around, I was inspired to focus on mid-cap stocks because of an interview I conducted with Madison Mosaic Mid-Cap (GSTGX) fund manger Rich Eisinger late last year. Eisinger said he favors mid-caps because their underlying companies tend to have established competitive advantages, such as a strong brand, but arent yet so large that their size inhibits future growth.

In other words, these stocks boast many of the same growth characteristics as small caps, but their businesses have matured to the point where they have at least some economic moat protecting them from encroachment by competitors.

Beyond that, mid-cap stocks have had quite a run over the past decade, beating both small caps and the broad market by meaningful margins. Over the trailing 10-year period, the S&P MidCap 400 gained 9.8 percent annualized versus 8.7 percent for the small-cap Russell 2000 and 6.4 percent for the S&P 500.

So lets identify the funds whose portfolios wed like to mine for ideas. With Morningstars Premium Fund Screener, I can set seemingly impossible standards for performance and see what results. First, I looked for funds that beat the market over the one-year, three-year, five-year, and 10-year trailing time periods.

Additionally, I wanted funds whose managers are focused on risk reduction, but I didnt want to rely upon obscure metrics such as standard deviation or beta. Instead, I decided to see which funds managed to lose less than the market during both the bear market year of 2008, as well as in the difficult conditions posed by the market in 2011.

Because Morningstars equity style categories arent always a full reflection of a funds underlying portfolio, I specified that portfolios must have at least a 30 percent allocation to mid-cap growth stocks.

Finally, I didnt want a new management team getting credit for a prior management teams performance. As such, at least one member of each fund had to have at least five years at the helm of their current fund. That means they had to navigate one of the most treacherous bear markets in recent history, while still posting outstanding short- and long-term returns.

Here is the list of the nine funds that made the cut:

• Dreyfus/The Boston Co Small/Mid-Cap Growth (SDSCX)
• HighMark Geneva Mid-Cap Growth (PNMAX)
• Madison Mosaic Mid-Cap (GTSGX)
• Meridian Growth (MERDX)
• Neuberger Berman Genesis (NBGNX)
• Nicholas (NICSX)
• Pioneer Oak Ridge Small-Cap Growth (ORIGX)
• Prudential Jennison Mid-Cap Growth (PEEAX)
• T. Rowe Price Diversified Small-Cap Growth (PRDSX)

Though all of these funds produced enviable returns, not all are suitable for the average investors portfolio. For instance, some of these funds have sales loads of as much as 5.75 percent, which would be deleterious to long-term returns. Other funds have limited availability due to only being offered in certain plans or brokerages.

Two of these funds are explicitly small-cap funds, but as noted earlier, their portfolios have sizable allocations to mid-cap names. That could mean they have a different definition of the uppermost capitalization threshold for the small-cap universe. Or it could mean that they selected stocks that have since grown into mid-caps and are riding out their gains. Another possibility is that the funds success has attracted so many assets, that its large size necessitates moving up the capitalization ladder for at least some of its picks.

Interestingly, five of the nine funds have relatively concentrated portfolios of 60 or fewer names, while six of the funds have annual turnover ratios of 32 percent or less. That means the stocks in a majority of these funds portfolios tend to be high-conviction names that management intends to hold for the long term.

With this list of top funds in hand, I then used Morningstars Portfolio X-Ray tool to see which stocks were most commonly held among these nine mutual funds. I looked for names that were held by at least four funds. Heres the list, with the number of funds that hold each stock listed in parentheses:

The next step was to examine each funds portfolio to determine whether management increased the size of its holding in the stock during the most recent quarter, or even better, if the stock was a new addition to the portfolio.

Because some stocks were held by more funds than others, I used a point system based on whether the size of a particular holding remained the same from the prior quarter, increased modestly in the most recent quarter, was boosted significantly from the previous quarter or was an entirely new addition to the portfolio. Since the goal is to find those names that might still qualify as current buys in the eyes of management, the latter two criteria received the greatest weightings.

Of these 10 names, LKQ Corp narrowly edged out IDEXX Laboratories. Meridian Growth initiated a new position in the stock during the second quarter (the most recent quarter for which we have such data for this particular fund), while in the third quarter, Pioneer Oak Ridge Small-Cap Growth more than doubled its position to 2.4 percent of assets, making LQK its fifth-largest holding.

LKQ holds the leading share in the highly fragmented market for aftermarket and recycled auto parts. The company has grown via acquisition, and now its relative scale means its well positioned to steal market share from its far smaller competitors.

However, the stock trades near its 52-week high, so its not exactly in the bargain bin. By contrast, IDEXX, a developer and manufacturer of diagnostic veterinary equipment, is down about 7.2 percent from its 52-week high. Still, both stocks trade roughly 13 percent over Morningstars estimate of their intrinsic value. But thats not uncommon for growth stocks.

Of course, now that weve identified some promising candidates, its time to undertake additional fundamental research.