William John Sempolinski
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William John Sempolinski’s Corning GLW Stock Holding History

William John Sempolinski’s Portfolio GLW Stock Details GLW Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$217K Sell
1,410
-3,100
-69% -$493K 0.08% 100
2026
Q2 		$1.15M Hold
4,510
– – 0.47% 45
2026
Q1 		$613K Buy
+4,510
New +$544K 0.31% 55

Other funds holding GLW

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $704B AUM 26.74% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return
State Farm Mutual Automobile Insurance
State Farm Mutual Automobile Insurance Bloomington, Illinois $142B AUM 43.93% 1-Year Est. Return

William John Sempolinski's GLW Position: Q3 2026 in Review

William John Sempolinski reduced its Corning (GLW) stake by 69% in Q3 2026, selling an estimated $493K and leaving 1,410 shares worth $217K. The position accounts for 0.08% of the portfolio, ranked #100.

William John Sempolinski first reported a position in GLW in Q1 2026 and has held it in 3 quarters since. The position peaked at $1.15M in Q2 2026. 2,066 funds tracked by Wall St. Rank hold GLW as of Q3 2026.

  • William John Sempolinski held 1,410 shares of Corning worth $217K as of Q3 2026.
  • William John Sempolinski sold 3,100 Corning shares in Q3 2026, an estimated $493K.
  • Corning made up 0.08% of William John Sempolinski's portfolio in Q3 2026, its #100 holding.
  • William John Sempolinski first reported a position in Corning in Q1 2026 and has held it in 3 quarters since.
  • William John Sempolinski's Corning position peaked at $1.15M in Q2 2026.
  • 2,066 funds tracked by Wall St. Rank held Corning as of Q3 2026.

Based on William John Sempolinski's 13F filing for Q3 2026, filed 20 Oct 2026.