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William Harnisch’s Nextpower Inc NXT Stock Holding History

William Harnisch’s Portfolio NXT Stock Details NXT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-10,000
Closed -$544K – 13
2025
Q2 		$544K Buy
+10,000
New +$502K 0.02% 11
2025
Q1 		– Sell
-380,000
Closed -$13.9M – 11
2024
Q4 		$13.9M Buy
+380,000
New +$13.9M 0.56% 9

Other funds holding NXT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

William Harnisch's NXT Position: Q3 2025 in Review

William Harnisch sold out of Nextpower Inc (NXT) in Q3 2025, closing a stake of 10,000 shares — an estimated $544K sold.

William Harnisch first reported a position in NXT in Q4 2024 and held it in 2 quarters. The position peaked at $13.9M in Q4 2024. 544 funds tracked by Wall St. Rank hold NXT as of Q3 2025.

  • William Harnisch reported no remaining Nextpower Inc position as of Q3 2025 after selling out during the quarter.
  • William Harnisch sold 10,000 Nextpower Inc shares in Q3 2025, an estimated $544K.
  • William Harnisch first reported a position in Nextpower Inc in Q4 2024 and held it in 2 quarters.
  • William Harnisch's Nextpower Inc position peaked at $13.9M in Q4 2024.
  • 544 funds tracked by Wall St. Rank held Nextpower Inc as of Q3 2025.

Based on Peconic Partners's 13F filing for Q3 2025, filed 14 Nov 2025.