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Goldman Sachs rehires senior trader Simon Costello after Balyasny stint

Reported by Opalesque ·Financial News
Aug 27, 2026· 2 min read
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Key Takeaways
  • • Goldman Sachs rehired Simon Costello as an executive director and senior FX options trader in London, bringing him back after a brief stint at Balyasny Asset Management as an associate portfolio manager.
  • • Costello brings over eight years of prior Goldman Sachs experience and specialized expertise in G10 FX options trading, a strategically important capability in foreign exchange markets.
  • • The rehire reflects competitive talent dynamics in alternative asset management, with established banks recapturing senior traders from hedge fund platforms.
Summary
Goldman Sachs has brought back Simon Costello to its London office as an executive director and senior FX options trader, following his recent departure from Balyasny Asset Management where he held the role of associate portfolio manager. Costello's return to Goldman marks a reversal typical of the fluid senior talent market in financial services, where experienced traders move between institutional platforms based on market conditions and strategic opportunity.

Costello's background positions him as a valuable addition to Goldman's fixed income and FX division. His track record spans more than eight years at Goldman Sachs, during which he developed specialist expertise in G10 foreign exchange options—a niche but strategically important segment of derivatives trading. G10 FX options involve currency pairs from developed economies (including USD, EUR, GBP, JPY, CHF, CAD, AUD, NZD, NOK, and SEK), which remain core hedging instruments for multinational corporations and asset managers navigating global capital flows.

The rehire signals continued investment by Goldman Sachs in its FX derivatives capabilities during a period of heightened currency volatility and cross-border capital reallocation. Senior traders with deep expertise in options pricing, volatility modeling, and structured hedging strategies remain in high demand across the industry. Costello's decision to return to Goldman from an alternative asset manager suggests that established investment banks continue to offer competitive compensation and operational infrastructure that can rival hedge funds for senior talent, particularly in specialized trading domains.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Opalesque Goldman Sachs rehires senior trader Simon Costello after Balyasny stint Financial News Goldman Sachs rehires senior trader Simon Costello after Balyasny stint