Are you an:

Don't let the labels put you off!
If you're not an investor, but you want to learn, you can select investor


Register for FundCalibre!

We just need to know
if you are an:

Don't let the labels put you off!
If you're not an investor, but you want to learn, you can select investor


Neptune UK Mid Cap

Elite Rated by FundCalibre

This is a high-conviction fund managed on a collegiate basis, with the 30-strong team of managers and analysts all contributing global macroeconomic and sector overviews. The manager is responsible for portfolio construction, but many of the stock ideas come from other members of the investment team.

Company Description

Founded in 2002, boutique investment manager Neptune concentrates on long-only fund management. Employees and directors own approximately three-quarters of the company, ensuring that staff and client interests are aligned. Neptune undertakes all of its own fundamental research.


Fund Manager

This fund is co-managed by Mark Martin and Holly Cassell. The pair joined Neptune in 2008 and 2013 respectively, with Mark managing this fund since December 2008 having started out as a senior analyst, while Holly became assistant manager on the fund in 2014 and was promoted to co-manager in May 2017. Both graduated from Oxford University.


Focusing on economic recovery plays, structural growth stories and corporate turnarounds in some of the most exciting sectors of the UK market.

Mark Martin - Fund Manager

The Investment Process

Drawing on Neptune’s global research output, this fund adopts a balanced construction, with at least 20% of the portfolio invested in three different ‘silos’. These silos are; recovery plays, structural growth stories and turnarounds. Therefore, at least 60% of the fund will be invested across these silos at any one time.


Investing in mid-cap (FTSE 250) stocks does come with additional risk/volatility and Mark can also consider any of the top 50 FTSE Small Cap index constituents. He does, however, measure valuations against both peers in industry as well as against historical levels, which helps to eliminate overpaying for stocks.

Our Opinion

Another genuinely active fund from the Neptune stable run successfully by Mark Martin, head of UK equities, since 2008. The three-factor approach (recovery plays, structural growth stories and turnaround) has served him particularly well.

  • Fund
  • Sector

©2014 FundCalibre Limited. All Rights Reserved. The information, data, analyses, and opinions contained herein (1) include the proprietary information of FundCalibre, (2) may not be copied or redistributed without prior permission, (3) do not constitute investment advice offered by FundCalibre, (4) are provided solely for informational purposes and therefore are not an offer to buy or sell a fund, and (5) are not warranted to be correct, complete, or accurate. FundCalibre shall not be responsible for any trading decisions, damages, or other losses resulting from, or related to, this information, data, analyses, or opinions or their use. The Elite Fund rating is subjective in nature and reflects FundCalibre’s current expectations of future events/behaviour as they relate to a particular fund. Because such events/behaviour may turn out to be different than expected, FundCalibre does not ,guarantee that a fund will perform in line with its FundCalibre benchmark. Likewise, the Elite Fund rating should not be seen as any sort of guarantee or assessment of the creditworthiness of a fund or of its underlying securities and should not be used as the sole basis for making any investment decision. FundCalibre disclaims any responsibility for trading decisions, damages or other losses resulting from any use of the Elite Fund rating.