Blue Whale Growth Fund: Performance, Review & Investment Guide

If you’ve been searching for a UK-listed global growth fund that can hold its own against the big-name competitors, Blue Whale Growth Fund likely crossed your radar. Managed by Stephen Yiu, this fund has built a reputation for bold bets and bold swings in performance — sometimes doubling the sector average, sometimes lagging badly. For investors deciding whether to park their capital here, the real question is whether those swings add up over a full market cycle.

Fund Manager: Stephen Yiu · Investment Objective: Capital growth over any five year period · Key Site: bluewhale.co.uk · Morningstar Coverage: Listed in top-performing large-growth funds · Share Class Example: WS Blue Whale Growth Class I – Accumulation (GBP)

What is a blue whale growth fund?

The WS Blue Whale Growth Fund is a UCITS-compliant global equity fund domiciled in the UK, managed by Stephen Yiu and his team at Blue Whale Capital. Its stated objective is to achieve capital growth over any five-year period after costs, with at least 80% of assets invested in equities worldwide, including emerging markets.

Investment objective

The fund’s investment policy makes no secret of its growth ambitions. It targets 25–35 high-conviction stocks, focusing on high-quality businesses trading at what the manager considers attractive valuations. The official factsheet describes the approach as searching for “companies with durable competitive advantages trading at a discount to intrinsic value,” though the fund’s actual performance swings suggest the “high-conviction” label also means concentrated bets on sectors that can swing dramatically.

Fund structure

The fund operates across multiple share classes to serve different investor needs. The primary GBP classes are I-Acc (GB00BD6PG563) and R-Acc (GB00BD6PG787), with the I class typically carrying a lower ongoing charge for larger investments. An EUR T Class variant also exists for European investors seeking currency diversification. The ongoing charge figure sits at 1.09%, dropping to approximately 0.84% net of platform savings when held through Hargreaves Lansdown.

Who owns the Blue Whale fund?

Stephen Yiu founded Blue Whale Capital and serves as the fund’s primary manager. His approach has attracted a loyal investor base through platforms like Hargreaves Lansdown, Interactive Investor, and Bestinvest, though the fund remains a boutique operation compared to global giants like Baillie Gifford or Janus Henderson. The fund’s assets under management stand at approximately £1.7 billion as of the latest available data.

Founder and manager details

Unlike large institutional fund managers, Blue Whale Capital operates as a focused boutique. Yiu has been vocal about challenging common misconceptions investors hold about the fund, particularly around its volatility profile and concentration risk. The manager’s philosophy centers on finding misunderstood businesses rather than following consensus tech trends, even as the fund’s largest holding (NVIDIA at 9.87%) suggests some comfort with market favorites.

Is Blue Whale fund a good investment?

The answer depends heavily on your time horizon and tolerance for volatility. Since launch in September 2017, the fund has delivered +14.1% annualized returns versus the IA Global sector’s +8.2%, representing meaningful outperformance over a full market cycle. However, those returns mask significant year-to-year swings: the fund lost 27.6% in 2022 while the sector fell only 11.1%, then surged 30.7% in 2023 and 28.2% in 2024.

Pros and cons

Risk factors

The fund’s concentrated portfolio means individual stock selection has an outsized impact on performance. NVIDIA alone represents 9.87% of assets, meaning a single bad quarter from the chipmaker could drag the entire fund significantly. The US-heavy allocation (66.53%) also means UK-based investors carry substantial currency exposure alongside their equity risk. Investors expecting steady, smooth returns will likely be disappointed during market corrections.

Blue whale growth fund performance

Looking at the numbers, the fund’s track record since launch tells a compelling story of growth-bent investing — with all the bumps that philosophy entails. The Hargreaves Lansdown factsheet shows annual returns of 4.44% (2020-21), -6.90% (2021-22), 41.78% (2022-23), 4.60% (2023-24), and 47.20% (2024-25), with the 12 months to March 2026 delivering that remarkable 47.20% gain. However, the Morningstar data shows a more modest +2.28% over the trailing 12 months, suggesting significant variance depending on the measurement period.

Historical returns

The official factsheet provides the clearest annual picture against the IA Global benchmark. In 2022, the fund’s -27.6% loss versus the sector’s -11.1% represented a brutal divergence, though the subsequent recovery in 2023 (+30.7%) and 2024 (+28.2%) more than compensated. By year-end 2024, the fund had beaten its benchmark by a cumulative 33.6 percentage points across those two years alone. The year-to-date return as of 30 June 2025 showed +5.8%, outperforming the IA Global sector’s +0.7% by 5.1 percentage points.

Morningstar ratings

Morningstar lists the WS Blue Whale Growth Fund among its top-performing global large-cap growth funds, though the specific star rating and analyst recommendation were not explicitly available in the research data. The fund appears in Morningstar UK’s curated “Top 5 Global Large-Cap Growth Stock Funds” list, which places it among established competitors like Baillie Gifford Long Term Global Growth and Rathbones.

The three-year annualized return stands at 12.30% per Morningstar, compared to the category average of 4.95% and Baillie Gifford’s 9.97% over the same period. The five-year figure shows 10.66% annualized versus the category’s 8.16%, suggesting the fund has maintained its edge across multiple timeframes despite the 2022 volatility.

Blue Whale growth fund top 10

Understanding the fund’s top holdings reveals why performance can swing so dramatically. As of March 2026, NVIDIA represents the largest position at 9.87%, followed by other technology and growth-oriented companies. The technology hardware and equipment sector dominates at 42.64% of the portfolio, meaning tech market movements have an outsized effect on daily NAV changes.

Key holdings

NVIDIA’s 9.87% weighting reflects the fund manager’s willingness to back dominant market leaders, even at premium valuations. The top 10 holdings collectively represent a significant portion of assets, creating the concentrated risk profile that distinguishes Blue Whale from more diversified global funds. Investors should note that any material change in NVIDIA’s valuation — whether from AI spending pullbacks, competition from AMD/Intel, or regulatory headwinds — would substantially impact the fund’s performance.

Portfolio allocation

The fund maintains 66.53% exposure to US equities, with the remainder spread across other developed and emerging markets. This heavy US tilt aligns with the manager’s focus on global technology leaders, many of which are US-listed. The technology hardware concentration at 42.64% suggests the manager sees continued secular growth in semiconductors, cloud infrastructure, and related hardware — a bet that has paid off dramatically since 2023 but creates vulnerability if the AI investment thesis encounters obstacles.

Six peer funds reveal a consistent pattern: Blue Whale delivers strong absolute returns over longer horizons but shows vulnerability to short-term underperformance. The fund’s 12-month return of +2.28% trails four of five peers, yet its three-year figure of +12.30% annualized beats every competitor shown. Over five years, the fund’s +10.66% sits between Baillie Gifford’s +9.58% and Rathbones’ +11.34%.

Blue Whale growth fund price

Tracking the fund’s price across share classes shows the NAV appreciation over time. The R Sterling Accumulation share class (GB00BD6PG787) stood at 283.72p as of 14 July 2025, while the I Sterling Accumulation class (GB00BD6PG563) reached 327.49p by 21 October 2025. By 20 March 2026, the Class I Accumulation price on Hargreaves Lansdown showed 367.12p, representing significant appreciation over those periods.

Three data points spanning eight months show steady price appreciation: the I class gained roughly 39.63p (approximately 12.1%) from October 2025 to March 2026. However, these snapshots don’t capture intraday volatility or the sharp drawdowns that characterize the fund’s performance history. Investors should check current pricing directly on Hargreaves Lansdown or the Financial Times Markets page (GB00BD6PG787:GBP) before making investment decisions.

Blue Whale growth fund 13F holdings

US regulations require institutional investment managers with over $100 million in assets under management to file 13F reports with the Securities and Exchange Commission, disclosing quarterly equity positions. Blue Whale Capital, as a manager of a fund exceeding that threshold, would file such reports — making the fund’s US equity positions publicly traceable through the SEC’s EDGAR database.

These filings provide valuable transparency for investors wanting to understand exactly what stocks drive Blue Whale’s performance. The March 2026 portfolio data showing NVIDIA at 9.87% aligns with what 13F filings would likely disclose. Investors concerned about concentrated positions or sector concentration can cross-reference the fund’s published top holdings with its SEC filings for independent verification.

“Committed to maximising your investment.”

— Blue Whale Capital, Official Factsheet

“Past performance is not a guide to the future.”

— Blue Whale Capital, Official Factsheet

Related reading: Sunda Energy Share Price · How Many ISAs Can I Have

Since its 2017 launch, the Blue Whale Growth Fund has excelled in global equities, with its strategy and key facts offering deeper insights into its concentrated holdings and returns.

Frequently asked questions