In my April review of the SIF portfolio’s performance during its first year, I concluded that the six month holding period might be too short. The majority of the stocks I sold last year continued to rise over the following months.

Of course, these gains took place against the backdrop of a strong bull market. So it may simply be that the rising tide has lifted all ships. Notwithstanding this risk, I decided to increase the minimum holding period for each stock from six months to nine months this year.

In order to avoid running out of cash for an extended period and being unable to buy new stocks, I’m phasing this change in gradually. This week I’m reviewing stocks which have been in the portfolio for seven months. In July, I’ll consider selling eight-month old holdings and in September I’ll move to nine months.

Two stocks are up for review this month -- Bangladeshi pharma firm Beximco Pharmaceuticals and Israeli internet marketing group XLMedia. Both are AIM-listed foreign companies that some investors would automatically rule out as potentially high risk. Despite this, both companies appear to have solid accounts and have been strong performers for the portfolio.

Interestingly, both are also rated as Super Stocks by the new StockRank Styles algorithm, with a RiskRating of Speculative. The Super Stocks classification suggests that these shares are statistically likely to outperform the market. However, the speculative tag indicates that even if they’re successful, XLMedia and Beximco could deliver a volatile ride for investors.

Beximco Pharmaceuticals

Bangladeshi firm Beximco Pharmaceuticals specialises in the production of generic products for domestic and international market. It was founded in 1976 and has traded with a dual listing in Dhaka and London since 2005.

One interesting aspect of this stock was highlighted by Graham Neary in a SCVR in April. Beximco’s UK shares (which are GDRs) trade much more cheaply than its Bangladeshi stock. In theory, this should provide an attractive arbitrage opportunity, but in practice this isn’t possible. According to Beximco’s website, the two share classes aren’t fungible. In other words, you can’t exchange GDRs for the underlying shares.

Given the lack of fungibility, I’m not sure how much downside protection this discount really provides for UK shareholders. But fortunately the SIF Portfolio hasn’t needed downside…

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