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William Harnisch’s First Solar FSLR Stock Holding History

William Harnisch’s Portfolio FSLR Stock Details FSLR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-395,000
Closed -$77.9M – 10
2026
Q1 		$77.9M Buy
395,000
+100,000
+34% +$22.1M 1.35% 6
2025
Q4 		$77.1M Buy
295,000
+195,000
+195% +$49.2M 1.83% 5
2025
Q3 		$22.1M Sell
100,000
-200,000
-67% -$38.4M 0.61% 7
2025
Q2 		$49.7M Buy
+300,000
New +$44.3M 1.59% 4
2017
Q3 		– Sell
-50,000
Closed -$1.99M – 48
2017
Q2 		$1.99M Buy
+50,000
New +$1.7M 0.32% 24

Other funds holding FSLR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HCC
Hill City Capital Boston, Massachusetts $4.28B AUM 80.76% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

William Harnisch's FSLR Position: Q2 2026 in Review

William Harnisch sold out of First Solar (FSLR) in Q2 2026, closing a stake of 395,000 shares — an estimated $77.9M sold.

William Harnisch first reported a position in FSLR in Q2 2017 and held it in 5 quarters. The position peaked at $77.9M in Q1 2026. 1,003 funds tracked by Wall St. Rank hold FSLR as of Q2 2026.

  • William Harnisch reported no remaining First Solar position as of Q2 2026 after selling out during the quarter.
  • William Harnisch sold 395,000 First Solar shares in Q2 2026, an estimated $77.9M.
  • William Harnisch first reported a position in First Solar in Q2 2017 and held it in 5 quarters.
  • William Harnisch's First Solar position peaked at $77.9M in Q1 2026.
  • 1,003 funds tracked by Wall St. Rank held First Solar as of Q2 2026.

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