EM
NI icon

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
2026
Q2 		$214M Hold
4,493,353
– – 0.45% 20
2026
Q1 		$210M Sell
4,493,353
-894,427
-17% -$40.3M 0.4% 20
2025
Q4 		$233M Buy
5,387,780
+238,613
+5% +$10.2M 1.63% 20
2025
Q3 		$223M Buy
5,149,167
+714,922
+16% +$29.6M 1.68% 18
2025
Q2 		$179M Buy
4,434,245
+1,516,296
+52% +$59.5M 1.74% 19
2025
Q1 		$117M Sell
2,917,949
-70,700
-2% -$2.72M 1.65% 17
2024
Q4 		$110M Hold
2,988,649
– – 1.47% 17
2024
Q3 		$104M Sell
2,988,649
-290,000
-9% -$9.25M 1.43% 18
2024
Q2 		$94.5M Buy
3,278,649
+1,374,568
+72% +$38.8M 1.39% 18
2024
Q1 		$52.7M Buy
1,904,081
+788,170
+71% +$20.7M 0.8% 19
2023
Q4 		$29.6M Buy
+1,115,911
New +$28.7M 0.37% 26

Other funds holding NI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return
Invesco
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.