William Blair Investment Management
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William Blair Investment Management’s Lumentum LITE Stock Holding History

William Blair Investment Management’s Portfolio LITE Stock Details LITE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-26,579
Closed -$18.7M – 427
2026
Q1 		$18.7M Sell
26,579
-113,124
-81% -$62.1M 0.06% 262
2025
Q4 		$51.5M Sell
139,703
-134,421
-49% -$34.5M 0.14% 136
2025
Q3 		$44.6M Sell
274,124
-85,574
-24% -$10.7M 0.12% 149
2025
Q2 		$34.2M Buy
+359,698
New +$25.5M 0.09% 176
2020
Q2 		– Sell
-64,370
Closed -$4.74M – 353
2020
Q1 		$4.74M Buy
+64,370
New +$5.07M 0.02% 293

Other funds holding LITE

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
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 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
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

William Blair Investment Management's LITE Position: Q2 2026 in Review

William Blair Investment Management sold out of Lumentum (LITE) in Q2 2026, closing a stake of 26,579 shares — an estimated $18.7M sold.

William Blair Investment Management first reported a position in LITE in Q1 2020 and held it in 5 quarters. The position peaked at $51.5M in Q4 2025. 1,317 funds tracked by Wall St. Rank hold LITE as of Q2 2026.

  • William Blair Investment Management reported no remaining Lumentum position as of Q2 2026 after selling out during the quarter.
  • William Blair Investment Management sold 26,579 Lumentum shares in Q2 2026, an estimated $18.7M.
  • William Blair Investment Management first reported a position in Lumentum in Q1 2020 and held it in 5 quarters.
  • William Blair Investment Management's Lumentum position peaked at $51.5M in Q4 2025.
  • 1,317 funds tracked by Wall St. Rank held Lumentum as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.