Eric Mandelblatt’s NiSource NI Stock Holding History

Eric Mandelblatt’s Portfolio NI Stock Details NI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2015 Q3	–	Sell	-2,545,000	Closed	-$17.9M	–	46
2015 Q2	$17.9M	Buy	+2,545,000	New	+$45.3M	0.12%	48

Other funds holding NI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Eric Mandelblatt's NI Position: Q2 2026 in Review

Eric Mandelblatt held its NiSource (NI) position steady in Q2 2026 at 4,493,353 shares worth $214M. The position accounts for 0.45% of the portfolio, ranked #20.

Eric Mandelblatt first reported a position in NI in Q4 2023 and has held it in 11 quarters since. The position peaked at $233M in Q4 2025. 910 funds tracked by Wall St. Rank hold NI as of Q2 2026.

Eric Mandelblatt held 4,493,353 shares of NiSource worth $214M as of Q2 2026.
Eric Mandelblatt left its NiSource share count unchanged in Q2 2026.
NiSource made up 0.45% of Eric Mandelblatt's portfolio in Q2 2026, its #20 holding.
Eric Mandelblatt first reported a position in NiSource in Q4 2023 and has held it in 11 quarters since.
Eric Mandelblatt's NiSource position peaked at $233M in Q4 2025.
910 funds tracked by Wall St. Rank held NiSource as of Q2 2026.

Based on Soroban Capital Partners's 13F filing for Q2 2026, filed 14 Aug 2026.