Mainwall Investment Management, est. 2021 / 30 years on Wall Street

While the market chases NVIDIA, we hunt through the bargain bin.

A small-cap value sleeve for sophisticated investors. Typically a 10 to 20 percent allocation alongside your core portfolio, hunting fundamentally sound businesses trading well below their intrinsic value. The patient way long-term records get built.

Charles Neuhauser, CFA, founder of Mainwall Investment Management
Charles Neuhauser, CFA© Founder & Portfolio Manager

A pedigree built on patience

  • Sequoia Fund (mutual fund)
  • Ruane, Cunniff & Co.
  • Legg Mason
  • ICM Small Company Portfolio
  • Reich & Tang Capital
  • Three Barron’s features
  • Chartered Financial Analyst
  • 30 Years on Wall Street
01 Philosophy

The most simplistic, easy to understand thing in the world.

Imagine Mrs. Jones at the grocery store. She sees bananas on sale for one dollar a pound instead of the usual two. She is immediately attracted to that, because she is getting a good deal.

That is value investing. Stocks selling for less than they are worth. We specialize in smaller companies precisely because fewer analysts cover them, which increases the odds of finding something genuinely mispriced.

Value stocks are usually cheap for a reason. Some problem has spooked the crowd; some narrative has soured. The value buyer must look past it, do the work to assess what the business is really worth, and have the patience to wait for the market to catch up. It is, by reputation, boring. It is also how the great long-term records get built.

We avoid commodity producers and bank stocks. Lehman, Silicon Valley, First Republic: history is full of decades-old financial firms whose true exposures only became clear too late. We stick to businesses we can understand, with clean balance sheets and real cash generation. No leverage, no shorting, no derivatives.

A pushcart operator on the streets of New York can tell you that a good business is one where there is more money in the till at month end than there was at the start. We seek to own cash-generating businesses.

If Mainwall can outperform when mega-cap growth stocks have been driving market indices, the future should be bright when fashion trends change.

Charles Neuhauser, CFA©
02 Track record
+35.0%

YTD 2026 (through May)

More than triple the S&P 500 index. Top decile among small-cap value managers.

Mainwall Flagship S&P 500
+0% +50% +100% +150% 2021 2022 2023 2024 2025 2026 Mainwall +128% S&P 500 +95%

Cumulative growth of $1 invested at inception, gross of fees. Illustrative based on publicly stated annualized returns.

Flagship Portfolio · annualized returns, gross of fees
Period Mainwall Flagship S&P 500 Outperformance
1 year +28.4% +17.9% +10.5
3 year +21.2% +15.8% +5.4
5 year +17.9% +14.4% +3.5

Returns shown are illustrative based on publicly available figures from mainwallllc.com. Past performance does not guarantee future results. Full GIPS-compliant performance available on request.

03 Who we serve

Built for investors who think for themselves.

i.

Family Offices

Sophisticated capital allocators who understand that small-cap value is a real, durable edge, and who have the flexibility to hold through cycles.

Allocations from $1M.

ii.

Sophisticated Individual Investors

Investors with substantial portfolios who recognize that being in the top 5% requires being unfashionable. People who already understand how a fee on assets aligns interests.

Long-only, fully invested.

iii.

Accredited Investors

Investors who meet the SEC accredited threshold and want a complement to their large-cap and index exposure. Typically a 10 to 20 percent allocation alongside your core holdings. We are not your only manager. We earn the slice we are given.

1% of AUM, billed quarterly.

04 About
Charles Neuhauser, CFA

Thirty years finding what others overlook.

Charles Neuhauser is the founder and portfolio manager of Mainwall Investment Management. His career began at Ruane, Cunniff & Co., the manager of the Sequoia Fund mutual fund and protégés of Warren Buffett.

He went on to publish corporate spin-off research, profiled by Barron’s nearly thirty years ago as the “orphans” piece, and his Small-Cap Values work at Legg Mason. He co-managed the ICM Small Company Portfolio, a $600 million institutional fund rated five stars by Morningstar, and ran roughly half a billion in micro to mid-cap assets at Reich & Tang Capital. Each chapter prompted a Barron’s interview. Three in all.

He holds the Chartered Financial Analyst designation. The track record speaks for itself; the discipline behind it is the point.

  • CFA© Chartered Financial Analyst
  • 30+ Years of investment management
  • Featured in Barron’s
  • Sequoia Fund Ruane, Cunniff & Co.
05 Process

A simple, disciplined engagement.

  1. 01

    Introductory call

    A direct conversation with Charles. No sales script, no polished closer. We discuss your situation, your goals, and whether the strategy fits.

  2. 02

    Portfolio construction

    Your assets stay at a custodian you choose, in your name. Charles holds a limited power of attorney to trade only, with no ability to move or withdraw funds. Choose between the diversified Flagship and the higher-conviction Concentrated portfolios.

  3. 03

    Quarterly reporting

    Plain-English commentary on positioning, additions, and exits. The reasoning, not the marketing. Always available by phone.

  4. 04

    Long-term compounding

    Patient ownership of mispriced businesses. Low turnover. The fee is one percent of assets, billed quarterly. We do better when you do better.

06 Questions

Worth asking before we speak.

Why small-cap value, when the mega-caps have led for years?

That is precisely why. Less research coverage means more genuine mispricing. And market leadership rotates. Producing top-decile returns while value has been out of favor suggests what is possible when the worm turns.

What is the minimum, and how do you charge?

Engagements typically begin at $1M. The fee is exactly 1% of assets under management, billed quarterly in advance. No performance fees, no incentive fees, no hidden costs.

How is performance measured and reported?

Returns are calculated against the S&P 500 and against the relevant small-cap value benchmark. We can produce GIPS-compliant figures on request. Quarterly reporting is delivered in plain English.

Why not just buy the index?

You probably should, for the meaningful core of your portfolio. Mainwall is meant to be a 10 to 20 percent sleeve alongside that core. The slice that hunts for genuinely mispriced businesses smaller than the index can efficiently access.

Do you short, use leverage, or run a hedge fund structure?

None of the above. Long-only, fully invested, separately managed accounts. Your assets stay at your custodian, in your name. Charles holds a limited power of attorney to trade only, with no ability to move or withdraw funds. Full transparency throughout.

Schedule an introduction

If this sounds like the kind of investor you are, get in touch.

A short, direct conversation with Charles. No pressure, no follow-up automation, no spam.

Or reach Charles directly:

cneuhauser@mainwallllc.com +1 (646) 673–5371