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Meet my vibe-coded, market-crushing AI hedge fund manager

Reported by Afr
Jun 26, 2026· 2 min read
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Key Takeaways
  • • Grace Capital's Long-Short Australian Equities Fund delivered 7.6% returns over a one-month period, substantially outperforming the S&P/ASX 200 which rose 1.8% in the same timeframe, according to the fund's monthly investment update.
  • • The fund employs an AI-driven investment approach with a distinctive "vibe-coded" methodology, reportedly taking contrarian positions including betting against major Australian equities such as BHP.
  • • Marcus Vance, Chief Investment Officer at Grace Capital, oversees the fund's investment strategy and communicates performance through monthly newsletters that emphasize significant market movements and shifts.
  • • The fund's performance demonstrates the potential for algorithmic and sentiment-based investment strategies to generate alpha relative to benchmark indices in the Australian equities market.
Summary
Grace Capital's Long-Short Australian Equities Fund has delivered notable outperformance during a recent month-long evaluation period, posting a 7.6% return compared to the S&P/ASX 200's 1.8% gain. The significant performance spread highlights the fund's differentiated investment approach in the competitive Australian equities market.

The fund's investment strategy is characterized by Marcus Vance, its Chief Investment Officer, as employing "vibe-coded" AI methodologies—an unconventional approach that appears to incorporate sentiment analysis and alternative data signals alongside traditional quantitative models. The fund operates a long-short structure, meaning it simultaneously holds long positions in favored securities while shorting those it views as overvalued or vulnerable. Notable among recent short positions is BHP, one of Australia's largest diversified mining companies, reflecting the fund's willingness to take contrarian stances against established market heavyweights.

Vance's monthly investment communications employ distinctive rhetoric, opening his latest update with the observation that "there are decades where nothing happens, and there are weeks where decades happen"—a framing intended to emphasize the significance of recent market movements. While such literary flourishes may appear unorthodox for institutional fund management, they accompany substantive performance metrics that have attracted attention from the investment community.

The fund's composition and culture reportedly emphasize unconventional thinking and risk-taking, characteristics Vance's communications suggest are essential to generating market-beating returns. The one-month performance period, while limited in duration, demonstrates that alternative methodologies leveraging AI and sentiment-based signals can deliver meaningful alpha when applied strategically to concentrated market opportunities.

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Sources

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Afr Meet my vibe-coded, market-crushing AI hedge fund manager