William Blair Investment Management
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William Blair Investment Management’s Kirby Corp KEX Stock Holding History

William Blair Investment Management’s Portfolio KEX Stock Details KEX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$20.2M Sell
148,613
-39,279
-21% -$5.62M 0.06% 247
2026
Q1 		$25M Sell
187,892
-116,319
-38% -$14.7M 0.08% 226
2025
Q4 		$33.5M Sell
304,211
-31,446
-9% -$3.2M 0.09% 184
2025
Q3 		$28M Buy
335,657
+46,287
+16% +$4.65M 0.07% 229
2025
Q2 		$32.8M Buy
+289,370
New +$30.4M 0.09% 185

Other funds holding KEX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
Luther King Capital Management (LKCM)
Luther King Capital Management (LKCM) Fort Worth, Texas $24.4B AUM 22.19% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

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

William Blair Investment Management reduced its Kirby Corp (KEX) stake by 21% in Q2 2026, selling an estimated $5.62M and leaving 148,613 shares worth $20.2M. The position accounts for 0.06% of the portfolio, ranked #247.

William Blair Investment Management first reported a position in KEX in Q2 2025 and has held it in 5 quarters since. The position peaked at $33.5M in Q4 2025. 467 funds tracked by Wall St. Rank hold KEX as of Q2 2026.

  • William Blair Investment Management held 148,613 shares of Kirby Corp worth $20.2M as of Q2 2026.
  • William Blair Investment Management sold 39,279 Kirby Corp shares in Q2 2026, an estimated $5.62M.
  • Kirby Corp made up 0.06% of William Blair Investment Management's portfolio in Q2 2026, its #247 holding.
  • William Blair Investment Management first reported a position in Kirby Corp in Q2 2025 and has held it in 5 quarters since.
  • William Blair Investment Management's Kirby Corp position peaked at $33.5M in Q4 2025.
  • 467 funds tracked by Wall St. Rank held Kirby Corp as of Q2 2026.

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