Can Odyssean's Concentrated Small-Cap Portfolio Keep Its 35% Run Going?

How Odyssean Became Its Sector's Top Performer

Odyssean Investment Trust (OIT) has become the best performer in its AIC small-cap sector, returning just shy of 35 per cent in the year to 25 July — more than double the FTSE Small Cap index, which rose over 15 per cent in the same period. The run marks a sharp turnaround for a trust that struggled from 2022 until the second half of last year.

The fund is run by Stuart Widdowson and Ed Wielechowski, who manage one of the most concentrated books in the sector. At the end of June it held just 17 companies, with the top 10 positions accounting for more than four-fifths of the portfolio. The managers invest across four sectors — industrials, business services, healthcare and technology, media and telecoms — and favour cheaply valued turnaround stories where they can engage with boards and management.

Despite being UK-focused, the trust generates most of its revenues abroad; the managers estimate that less than a quarter of their holdings' combined revenue comes from Britain, with the US a particular focus. That positioning shows in the portfolio's biggest winners. XP Power, which supplies power systems to the semiconductor industry and made up 15.9 per cent of the fund at the end of June, is up more than 90 per cent over the past year. Dialight, a lighting specialist making up just under 13 per cent, has climbed more than 130 per cent since July 2025 on the back of efficiency gains and AI and data centre demand, and recently upgraded its profit outlook. Gooch & Housego, the third-largest holding, has just agreed to a takeover bid after roughly doubling in value.

The managers trimmed XP Power in the second quarter and added two new undisclosed stocks, while a flurry of UK M&A activity has forced the team to keep sourcing fresh ideas. The year to date is one of the trust's best since it launched in 2018 — and the open question is whether its winners can keep running, and whether the next set of picks can deliver the same way. Its direct rival, Rockwood Strategic, had a weaker year but holds a stronger record over the medium and long term.

The Holdings Driving Odyssean's Rally — and the Risks Beneath Them

How XP Power and Dialight Drove the 35%

Odyssean's outperformance is concentrated in a handful of positions. XP Power and Dialight together account for roughly 29 per cent of the portfolio and both are tied to the same underlying story: rising demand for power and connectivity-driven equipment from AI infrastructure and data centre buildout. Their gains are verified — XP Power up over 90 per cent, Dialight up over 130 per cent since July 2025. What is less certain is how much further these re-ratings can go. Both shares now carry expectations of continued AI capital spending; if semiconductor orders pause or data centre projects slip, the trust's net asset value would feel it disproportionately because of the fund's concentration.

What the Gooch & Housego Takeover Changes

The third-largest position has been taken out at a premium following a bid, roughly doubling its contribution over the year. Verified facts: Gooch & Housego has agreed to a takeover, and UK dealmaking has been active enough that the managers note fresh ideas are constantly needed. The interpretation: buyouts deliver fast, headline-grabbing gains, but they also end the compounding story and force the managers to recycle capital into less proven ideas. The two new undisclosed positions added in the second quarter are an early sign of that turnover, and their quality will only become visible once the trust discloses them.

Odyssean's 17-Holding Structure Cuts Both Ways

With 17 holdings and more than 80 per cent of assets in the top 10, Odyssean lives or dies on stock selection. That amplifies winners when the managers are right and amplifies losses when they are wrong. The decision to trim XP Power after its surge shows some discipline in harvesting gains, but it also means the fund now needs its newer positions to contribute — making the next couple of quarterly reports the real test of whether the current performance is repeatable or a one-off.

The Rockwood Strategic Benchmark

The trust's sector-leading 12-month return sits alongside an awkward comparison. Rockwood Strategic struggled over the past year but has a materially stronger medium- and long-term record, according to the source. That means one excellent year does not by itself settle whether the current run reflects skill or a favourable tailwind for turnaround and small-cap value styles. Widdowson and Wielechowski will need to sustain the performance over several years to match Rockwood's record — and the volatility inherent in their style makes that the harder task.

What Investors Should Watch at Odyssean Next

For investors and analysts following the trust, the next disclosures will matter more than the past 12 months of returns.

• Look for the identity of the two new positions added in the second quarter — with top-10 holdings above 80 per cent of the portfolio, new ideas will quickly shape net asset value.
• Track XP Power's order flow and the semiconductor capital expenditure cycle: at 15.9 per cent of assets, any slowdown in AI-driven power demand would hit the fund's NAV hard.
• Follow Dialight's profit-outlook upgrade through its next results — the shares have risen more than 130 per cent in a year, so execution against that guidance is now the swing factor.
• Assess the portfolio impact of the Gooch & Housego takeover once it completes; the managers must redeploy the proceeds into new holdings, which creates a fresh source of uncertainty.
• Judge the managers over a full market cycle against Rockwood Strategic's medium- and long-term record, not just against a 12-month sector ranking.