SJR.B:CC - Millennium trading pod said to be shuttered after bets on Twitter Citrix Systems

A Millennium Management trading pod is said to be shutting down after some bets on mergers and acquisitions such as Twitter ( NYSE: TWTR ) performed badly.

East53 Capital, one of hedge fund Millennium's more than 270 pods, is closing down and its senior portfolio manager Maulin Shah is leaving, according to a Bloomberg report , which cited people familiar.

The East53 Capital pod is closing its doors after breaching some risk limits, Bloomberg reported. The unit of famed hedge funder Izzy Englander's Millennium was hurt by poor performance trading in M&A names including Twitter, Citrix Systems ( NASDAQ: CTXS ) and the planned Rogers Communications ( RCI ) purchase of Shaw Communications ( SJR ).

The deal spreads in many transaction have widened in recent months due to stock market volatility and concerns about financing for deals, especially leverage buyouts, as interest rates rise, as well as regulatory worries. In addition some risk arb investors were concerned after private equity firm Thoma Bravo suddenly reduced the price for its purchase of Anaplan last month and a Zendesk sale was announced for a fraction of what a PE firm offered in February.

Also see from Tuesday, Citrix, Cornerstone Building ticked higher on reports about loan financing.

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