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OmniAb
OABI

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

OABI Hedge Fund Activity: Q1 2026 in Review

128 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in OmniAb (OABI) for Q1 2026, worth a combined $87.7M — down 17% from $106M a quarter earlier.

Buyers outnumbered sellers: 24 funds opened new OABI positions and 22 closed out — a net gain of 2 holders — while 42 added to existing stakes and 38 trimmed.

The largest buyer was Nomura Holdings, adding an estimated $993K. The largest seller was Stonepine Capital Management, cutting an estimated $969K.

  • 128 institutional investors held OmniAb (OABI) as of Q1 2026, down from 129 in Q4 2025.
  • Funds reported $87.7M of OmniAb stock for Q1 2026, down 17% quarter-over-quarter.
  • 24 funds opened new OmniAb positions in Q1 2026 and 22 closed out, a net change of +2 holders.
  • The largest OmniAb buyer in Q1 2026 was Nomura Holdings, an estimated $993K added.
  • The largest OmniAb seller in Q1 2026 was Stonepine Capital Management, an estimated $969K sold.

Based on aggregated 13F filings for Q1 2026.