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Innospec
IOSP

Fund managers haven’t disclosed any holdings of IOSP yet.

IOSP Hedge Fund Activity: Q1 2026 in Review

266 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Innospec (IOSP) for Q1 2026, worth a combined $1.82B — down 2% from $1.86B a quarter earlier.

Buyers outnumbered sellers: 41 funds opened new IOSP positions and 29 closed out — a net gain of 12 holders — while 114 added to existing stakes and 79 trimmed.

The largest buyer was Two Sigma Investments, adding an estimated $33.8M. The largest seller was Westwood Holdings Group, exiting entirely with an estimated $37.6M sold.

  • 266 institutional investors held Innospec (IOSP) as of Q1 2026, up from 260 in Q4 2025.
  • Funds reported $1.82B of Innospec stock for Q1 2026, down 2% quarter-over-quarter.
  • 41 funds opened new Innospec positions in Q1 2026 and 29 closed out, a net change of +12 holders.
  • The largest Innospec buyer in Q1 2026 was Two Sigma Investments, an estimated $33.8M added.
  • The largest Innospec seller in Q1 2026 was Westwood Holdings Group, an estimated $37.6M sold.

Based on aggregated 13F filings for Q1 2026.