NISOURCE INC (NI) Institutional Ownership and Insiders Activity

NISOURCE INC (NI) is widely held by institutional investors, with 876 firms reporting positions valued at approximately $21.12B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $2.61B in NI holdings in its latest filing.

Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.