OCI shares rallied approximately 6% after the company disclosed it received an unsolicited takeover offer from NNS. Unsolicited bids typically represent a premium to the pre-announcement trading price, and the 6% move suggests the market is partially pricing in a deal but leaving room for uncertainty on whether the bid will be accepted, raised, or rejected.

OCI is a global producer of nitrogen fertilizers and methanol, and any acquirer would be buying into a business with exposure to energy input costs and agricultural commodity cycles. NNS's strategic rationale is not yet fully disclosed, which leaves the market guessing on synergies and the likelihood of a competing bid emerging.

The M&A arb setup here hinges on two variables: whether OCI's board engages or rejects the unsolicited approach, and whether NNS raises its offer or a white knight emerges. The 6% move implies the market assigns meaningful but incomplete probability to a deal closing at or above the current bid.

Key risks include a rejection by OCI's board, a deterioration in fertilizer market fundamentals that would undercut the bid's rationale, or regulatory hurdles depending on the jurisdiction. Without enrichment data on the exact bid price, consensus estimates, or NNS's financial capacity, confidence in sizing a precise arb spread remains limited.