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Castleark Management’s Diodes DIOD Stock Holding History

Castleark Management’s Portfolio DIOD Stock Details DIOD Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$289K Buy
+2,640
New +$268K 0.01% 284
2020
Q1 		– Sell
-86,675
Closed -$4.89M – 346
2019
Q4 		$4.89M Buy
+86,675
New +$4.01M 0.2% 154

Other funds holding DIOD

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Castleark Management's DIOD Position: Q2 2026 in Review

Castleark Management opened a new position in Diodes (DIOD) in Q2 2026: 2,640 shares worth $289K. The stake represents 0.01% of the portfolio and ranks #284 among its holdings. This is a return to the name: Castleark Management previously reported a position in DIOD as recently as Q4 2019.

Castleark Management first reported a position in DIOD in Q4 2019 and has held it in 2 quarters since. The position peaked at $4.89M in Q4 2019. 398 funds tracked by Wall St. Rank hold DIOD as of Q2 2026.

  • Castleark Management held 2,640 shares of Diodes worth $289K as of Q2 2026.
  • Diodes was a new Castleark Management position in Q2 2026.
  • Diodes made up 0.01% of Castleark Management's portfolio in Q2 2026, its #284 holding.
  • Castleark Management first reported a position in Diodes in Q4 2019 and has held it in 2 quarters since.
  • Castleark Management's Diodes position peaked at $4.89M in Q4 2019.
  • 398 funds tracked by Wall St. Rank held Diodes as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.